gl iv 7 3 e standard
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Rules for the Certification and Construction
IV Industrial Services
7 Offshore Substations
3 General Safety
Edition 2013
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The following Rules come into force on 1 October 2013.
Germanischer Lloyd SE
Head OfficeBrooktorkai 18, 20457 Hamburg, Germany
Phone: +49 40 36149-0
Fax: +49 40 36149-200
www.gl-group.com
"General Terms and Conditions" of the respective latest edition will be applicable
(see Rules for Classification and Construction, I - Ship Technology, Part 0 - Classification and Surveys).
Reproduction by printing or photostatic means is only permissible with the consent of
Germanischer Lloyd SE.
Published by: Germanischer Lloyd SE, Hamburg
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Table of Contents
Section 1
Risk Assessment / Hazard Identification
A General ....................................................................................................................... 1-1
B Hazard Identification and Risk Assessment Process ................................................. 1-1
Section 2 Marking Platform
A General ....................................................................................................................... 2-1
B Substation Marking Equipment ................................................................................... 2-1
Section 3 Means of Escape and Evacuation
A
General ....................................................................................................................... 3-1B Design Principles ........................................................................................................ 3-2
C Muster Area ................................................................................................................ 3-4
D Electrical Requirements .............................................................................................. 3-4
E Documentation............................................................................................................ 3-5
Section 4 Live-Saving Appliances
A
General ....................................................................................................................... 4-1
B Survival Crafts............................................................................................................. 4-2
C Rescue Boats.............................................................................................................. 4-3
D
Lifejackets ................................................................................................................... 4-4
E Immersion Suits and Anti-Exposure Suits .................................................................. 4-4
F Lifebuoys..................................................................................................................... 4-4
G Radio Life-Saving Appliances..................................................................................... 4-5
H Distress Flares ............................................................................................................ 4-5
I Line-Throwing Appliances .......................................................................................... 4-5
J Emergency Warnings and Instructions ....................................................................... 4-5
Section 5 Access and Transfer
A General ....................................................................................................................... 5-1
B
Boatlanding ................................................................................................................. 5-1
C Personal Transfer by Crane........................................................................................ 5-2
D Helicopter Landing Facilities....................................................................................... 5-5
E Safety Provisions for Helicopter Facilities................................................................... 5-7
F Helicopter Winching Facilities..................................................................................... 5-9
Section 6 Fire Safety - General
A General ....................................................................................................................... 6-1
B Fire Control Stations ................................................................................................... 6-2
C Fire Control Plans ....................................................................................................... 6-2
D Definitions ................................................................................................................... 6-3
E Submission of Documents .......................................................................................... 6-4
Rules IV Industrial Services
Part 7 Offshore Substations
Chapter 3 General Safety
Table of Contents
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Section 7 Passive Fire Protection
A Materials and Definition of Spaces ............................................................................. 7-1
B Ventilation and Fire Dampers .....................................................................................7-6
Section 8 Active Fire Protection
A General ....................................................................................................................... 8-1
B Arrangements in Machinery Spaces and Spaces Containing Fired Processes ......... 8-2
C Arrangements in Spaces Containing Large Oil Filled Electrical Equipment ............... 8-2
D Additional Requirements for Specific Lockers and Galley Facilities ........................... 8-3
E Water Fire Extinguishing Systems.............................................................................. 8-3
F Foam Fire Extinguishing Systems ..............................................................................8-6
G Fixed Gas Fire Extinguishing Systems ....................................................................... 8-8
H Portable Fire Extinguishers and Fireman's Outfit .....................................................8-13
Section 9 Fire and Gas Detection Alarm Systems
A General ....................................................................................................................... 9-1
B Manual Alarm .............................................................................................................. 9-2
C Arrangement of Fire Detectors and Alarm Loops .......................................................9-2
D Public Address and General Alarm System................................................................9-3
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Part 7 Offshore Substations
Chapter 3 General Safety
Table of Contents
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Section 1 Risk Assessment / Hazard Identification
A General ....................................................................................................................... 1-1
B
Hazard Identification and Risk Assessment Process ................................................. 1-1
A General
A.1 Scope
This section provides general requirements for safety assessments, aiming for identifying and evaluatinghazard and managing the risks.
A.2 Definitions
HAZARD [ISO 17776:2000] A Hazard is a potential Source of harm, which may be related to
human injury,
damage to the environment,
damage to property or
a combination of these
A HAZARDOUS EVENT [ISO 17776:2000] is an incident which occurs, when a hazard is realized.
RISK [ISO 17776:2000] Risk is the combination of probability of an event and the consequence of theevent.
A.3 Application
For new installations or activities it is important to identify potential hazards as early as possible, in orderthat sufficient time can be given to the study and evaluation of the hazard before determining the mostappropriate solutions to manage it. It is always easier to make modifications early in the design stage of aproject, when changes can be made with minimal effect on cost and schedule. [ISO 17776:2000]
Safety assessment comprised the application of recognized design standards. National and internationalstandards will provide the basis for detailed engineering design by the application of, and findings from,the assessment.
The basic principles of the assessment shall be applied to all aspects of the installation design including
arrangement,
structural and electrical design,
fire and explosion protection,
access and transfer as well as
emergency response.
B Hazard Identification and Risk Assessment Process
Hazard Identification and risk assessment involves a series of steps as described below:
Step 1 Identification of the hazard
This should be done based upon consideration of factors such as:
External hazards (e. g. ship collision, extreme environmental conditions, helicopter crash)
Arrangement of equipment
Rules IV Industrial Services
Part 7 Offshore Substations
Chapter 3 General Safety
Section 1 Risk Assessment / Hazard Identification
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Substances handled on the substation
Operating and maintenance procedures and conditions
Step 2 Assessment of the Risk
This should be done based on the hazards identified and by consideration of the tolerability to personnel,the facility and the environment. This normally involves the identification of
initiating events,
identification of possible accident escalation
estimation of the probability
assessment of consequences
The acceptability of the estimated risk must then be judged based upon criteria appropriate to the particu-lar situation. Such risk acceptance criteria, which are the limits above which the operator will not toleraterisk on the installation, shall be defined for each type of risk assessed.
Step 3 Risk mitigation
Where the risk level is deemed to be not acceptable, the definition of measures for mitigation of risk isrequired. This involves identifying opportunities to reduce the probability and/or consequence of a haz-ardous event.
Different risk levels may require different strategies to manage them. For instance, major risks may re-quire quantitative assessment with detailed mitigation recommendations developed while negligible risksmay be controlled by simple compliance with codes or standards.
Codes & Standards:
[1] GL Rules for Fixed Offshore Installations (IV-6-3), Section 1, C.4
[2] ISO 17776, 2000
[3] BSH 7005, page 28 Risk assessment for the significant working phases
[4] MODU 2009 / SOLAS
Other codes and Standards may be accepted in case by case
Rules IV Industrial Services
Part 7 Offshore Substations
Chapter 3 General Safety
Section 1 Risk Assessment / Hazard Identification
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Section 2 Marking Platform
A General ....................................................................................................................... 2-1
B
Substation Marking Equipment ................................................................................... 2-1
A General
A.1 Visual marking
A.1.1 The parts of substructure above the water level as well as the topsides of the installation shallbe painted according to local authority requirements to facilitate best visibility for the ship traffic (e.g. yel-
low, see e.g. IALA O-139).
A.1.2 The installation shall be also marked with nameplates for close-up range identification, visiblefrom all sides of the platform. The identification marking shall be visible during day and night time andshall be illuminated during darkness. Identification shall be generally provided with black letters/numbersof 1m height on yellow background.
Detailed font type, location and illumination of identification marking shall be agreed with the local author-ity. For the installation in German waters for example please refer to the requirements (WSD Richtlinie)for an approved Kennzeichnungskonzept and Umsetzungsplan.
B Substation Marking Equipment
B.1 Offshore units and installations fixed at the operation site are to be equipped with nauticalfacilities conforming to the IALA Recommendations for the Marking of Man-made Offshore Structures(IALA O-139) and the requirements for safety of navigation of the coastal state in whose waters the site islocated. These may include signal lights and sound signaling devices for fog as well as other systemssuch as Radar beacons, Sonar or Automatic Identification System (AIS, see IALA A-126).
B.2 AIS, signal lights and sound signalling devices for fog which transmit a coded signal for theidentification of the offshore structure are to be provided with their own emergency battery. The capacityof this battery, assuming simultaneous operation of all consumers, is to be rated to provide a supply for atleast 96 hours, unless some other period is specified by national regulations.
B.3 The coding and range of the radio, visual and sound signalling equipment are governed by thenational regulations relating to the site.
B.4 The switchboard for the signalling equipment is preferably to be sited in a permanentlymanned room, e.g. the control station or an equivalent location. The switchboard IP rating shall be in linewith its installation location according to the requirements as set out in GL Rules for Electrical Equipment(IV-7-5).
B.5 Each signalling device is to be supplied from the switchboard by its own feeder which is to beprotected by a fuse or automatic circuit breaker.
B.6 The failure of a signalling device is to be indicated visually and audibly and shall be also indi-cated in the station control system.
B.7 The switchboards are to be supplied from the emergency switchboard and a suitable emer-gency battery fulfilling the requirements as mentioned in GL Rules for Electrical Equipment (IV-7-5).
Rules IV Industrial Services
Part 7 Offshore Technology
Chapter 3 General Safety
Section 2 Marking Platform
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In the event of a mains failure, the supply shall switch automatically to the emergency battery.
B.8 A charger is to be assigned exclusively to meet the needs of the battery. Failure of the chargerand switch-over to the battery shall be indicated at the switchboard and in the station control system.
B.9 Where the signalling devices are switched on and off automatically, e.g. by photo-electricswitches, remote control, radio signals or visibility sensors, the switchboard is to be provided with a man-ual/automatic selector switch. The operating mode at any time shall be indicated and controlled by thestation control system.
B.10 Additionally to the above requirements concerning marine navigational aids, also the installa-tion of aviation obstruction lights shall be considered in case of elevated structures above a helicopterlanding deck on the substation. Applicable rules and standards (e.g. ICAO, CAP437, etc.) as well as ap-plicable national regulations shall be observed. For details refer also to GL Rules for Electrical Equipment(IV-7-5).
B.11 Requirements for tests and type approvals of such marking equipment may be considered.
Please note, that the local authorities may have the requirements for type approval of the Substation andWind Farm marking equipment as well as for initial and/or periodical inspections of these items.
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Part 7 Offshore Technology
Chapter 3 General Safety
Section 2 Marking Platform
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Section 3 Means of Escape and Evacuation
A General ....................................................................................................................... 3-1
B
Design Principles ........................................................................................................ 3-2
C Muster Area ................................................................................................................ 3-4
D Electrical Requirements .............................................................................................. 3-4
E Documentation............................................................................................................ 3-5
A General
A.1 Scope
In case of emergency both matters, escape and evacuation are subject to this Section which describesprinciples, requirements and guidance for the design of adequate and effective facilities for safe and con-trolled disembarkation of the personnel on the installation/unit.
All matters respecting survivability shall be combined in an evacuation, an escape and a rescue strategy.
A.2 Codes and Standards
Following codes and standards shall apply:
IMO SOLAS Chapter II-2, as amended
ISO 14122 Safety machinery Permanent means of access to machinery Part 1 to 4
ISO 17631 Ships and marine technology Ship-board plans for fire protection, life-saving appli-ances and means of escape
see also codes and standards in Section 5Access and Transfer
National requirements are subject to the location of the installation/unit and to be observed
A.3 Definitions
A.3.1 Emergency lighting
Lighting which will ensure adequate light conditions on the installation in the event of failure of the mainpower supply.
A.3.2 Escape
The act of persons moving away from a hazardous event to a safer place.
A.3.3 Evacuation
The planned and controlled method of leaving the installation without directly entering the sea.
A.3.4 Hazardous area
Three-dimensional space in which a explosive gas atmosphere may be expected to be present at suchfrequencies as to require special precautions for the control of potential ignition sources.
A.3.5 Non-hazardous area
Area in which an explosive gas atmosphere is not expected to be present in quantities such as to requirespecial precautions for the construction, installation and use of electrical apparatus and equipment.
A.3.6 Muster area
Area where mustering shall take place in the event of general and/or evacuation alarm.
Rules IV Industrial Services
Part 7 Offshore Substations
Chapter 3 General Safety
Section 3 Means of Escape and Evacuation
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A.4 Abbreviations
IMO International Maritime Organization
PA Public address system
SOLAS Safety of Life at Sea (IMO)
UPS Uninterruptible power supply
B Design Principles
B.1 Escape Routing
B.1.1 General
B.1.1.1 In every area which is likely to be regularly or temporarily manned or in which personnel are
accommodated at least two separate escape routes shall be provided, situated as far apart as practica-ble, to allow ready means of escape to the open decks and embarkation stations. Primary and secondaryescape routes shall be foreseen.
Exceptionally, GL may permit only one route of escape, due regard paid to the nature and location ofspaces and to the number of persons who might normally be accommodated or employed there.
B.1.1.2 Two routes of escape shall be provided from every machinery space such as those containingmajor electrical equipment.
B.1.1.3 Every escape route shall be readily accessible and unobstructed and all exit doors along theroute shall be readily operable. Dead-end corridors exceeding 7 m in length are not permitted. Switch-boards more than 7 m long shall not form dead end corridors.
B.1.1.4 Primary escape routes and stairways shall not be less than 1000 mm in clear width and 2.1 min height (2050 mm for doors). It has to be ensured that access ways are sufficiently sized to allow forstretcher operation from all accessible parts of the platform.
B.1.1.5 Escape routes shall be well marked, including signs. Marking shall show the preferred direc-tion of escape.
B.1.1.6 Personnel shall be able to use the escape routes without being exposed to excessive toxicfumes, smoke or unacceptable heat loads, hot liquids or falling objects. Special consideration is to begiven to routing of medium and high voltage cables in escape routes.
B.1.1.7 Escape routes should not be routed over hatches or lay-down areas.
B.1.1.8 Escape routes on deck shall be provided with non-skid coating or equivalent means.
B.1.1.9 In addition to these requirements of this chapter, national requirements, if applicable, for emer-gency escape and arrangement of stairs and ladders are to be observed.
B.1.2 Door arrangement
B.1.2.1 Doors in escape routes shall, in general, open in-way of the direction of escape, except thatindividual cabin doors may open into the cabins in order to avoid injury to persons in the corridor whenthe door is opened.
B.1.2.2 All doors shall be constructed so that one person can easily open them from either side. Theyshall open in the direction of escape, without blocking the outside escape route.
B.1.3 Stairs, ladders
B.1.3.1 Stairways shall normally be used for means of vertical escape, however, a vertical ladder maybe used for secondary means of escape when the installation of a stairway is shown to be impracticable.
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 3 Means of Escape and Evacuation
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B.1.3.2 Stairs and ladders are to be designed according to ISO 14122. Landings shall have the samesize as the stairways.
B.1.3.3 Ladders, stairs and walkways shall be of steel or other equivalent material.
B.1.4 Lifts
B.1.4.1 Lifts shall not be considered as forming one of the required means of escape. However, it shallbe possible to escape from the lift and the hoist way with the lift at any elevation. Upon loss of mainpower supply, lifts shall automatically go to next floor level and stop.
B.1.4.2 Any lift shall meet requirements of local regulations and shall be inspected, tested and main-tained by qualified persons.
B.2 Rescue and Recovery
B.2.1 General
It shall be possible to rescue and recover persons from sea back to platform or to a safe place.
B.2.1.1 Opportunities to rescue and to recover persons shall be available in acc. to location, environ-mental conditions and number of persons.
B.2.1.2 A rescue and recovery philosophy and plan shall be prepared.
Following items to be observed:
number of persons who may need to be rescued or recovered
capacity, remoteness and response time of the emergency services
potential limitations on availability, e.g. daytime, weather conditions and sea states
all stages of the operation to be covered
additional work activities are required, e.g. over side, under deck additional tools for emergency situations
B.3 Evacuation
B.3.1 The purpose of the evacuation system is to ensure means of safe abandonment of the instal-lation/unit for the maximum personnel on board, following a hazardous incident and a decision to aban-don the installation/unit.
B.3.2 The preferred methods of evacuation for installations/units have to be defined and may includethe following:
helicopter
lifeboats, conventional or free-fall
escape chute with life rafts
life rafts, over board or davit launched
boat landing
B.3.3 Number, size and location of evacuation means shall be established based on manning, riskanalyses (e.g. risk exposure of muster area and escape routes towards this area) and the evacuation,escape and rescue strategy. Primary and secondary means to be named.
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 3 Means of Escape and Evacuation
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C Muster Area
C.1 General
C.1.1 At least one safe route of two from any position on the installation/unit to the muster area shallbe available.
C.1.2 The muster areas and the access to the evacuation station shall be arranged and protected inorder to evacuate the actual number of personnel in an organized and efficient way. Special considerationis to be made to movement of persons on stretchers.
C.1.3 The muster area shall be located at lifeboat embarkation point or in a protected area with di-rect access to lifeboats or other primary way of escape.
C.1.4 Muster and embarkation stations should be adequately illuminated by emergency lighting.
C.2 Communication and Control
C.2.1 The PA, alarm and communication system shall warn and guide personnel as quickly as pos-sible in the event of a hazardous or emergency situation.
C.2.2 Minimum following communication facilities are to be provided at primary muster station:
Two hand portable radios
Technical facilities to make PA announcements
C.2.3 Facilities to initiate emergency shutdown, if provided, are to be arranged in the vicinity of themuster station.
C.2.4 The PA, alarm and emergency communication systems depend on emergency power sys-
tems, consisting of emergency generators and UPS.
D Electrical Requirements
D.1 Emergency lighting and power supply
Details see Chapter 5.
D.2 Escape route lighting
D.2.1 In addition to the emergency lighting the means of escape in accommodation areas, includingstairways and exits, should be marked by lighting or photo luminescent strip indicators placed not morethan 300 mm above the deck at all points of the escape route, including angles and intersections. Themarking should enable personnel to identify the routes of escape and readily identify the escape exits.
If electric illumination is used, it should be supplied by the emergency source of power and it should be soarranged that the failure of any single light or cut in a lighting strip will not result in the marking being inef-fective. Additionally, escape route signs and fire equipment location markings should be of photo lumi-nescent material or marked by lighting.
D.2.2 Such lighting or photo luminescent equipment has been evaluated, tested and applied in ac-cordance with the SOLAS.
D.3 Public address, alarm and emergency communication
Details see GL Rules for Electrical Equipment (IV-7-5).
Rules IV Industrial Services
Part 7 Offshore Substations
Chapter 3 General Safety
Section 3 Means of Escape and Evacuation
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E Documentation
E.1 General
All documents submitted for approval and/or review shall include all required details.
E.2 List of documents
Following drawings are subject for review and approval:
safety plans showing escape and embarkation at each level of the installation/unit with routes andmeans for personnel protection with following details:
primary and secondary means of escape to be mentioned
width of stairways, doors, corridors and landing areas
muster areas
means of life-saving appliances
location of personal protective equipment
arrangements drawings of stairs and ladders
lighting layouts including marked emergency lighting arrangement
lighting calculation
E.3 Evacuation analysis
Escape routes shall be evaluated by an evacuation analysis early in the design process. The analysisshall be used to identify and eliminate, as far as practicable, congestion which may develop during aban-donment, due to normal movement of personnel and crew along escape routes, including the possibilitythat a rescue team may need to move along these routes in a direction opposite the movement of per-sonnel.
In addition, the analysis shall be used to demonstrate that escape arrangements are sufficiently flexible toprovide for the possibility that certain escape routes, assembly stations, embarkation stations or survivalcraft may not be available as a result of a casualty.
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 3 Means of Escape and Evacuation
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Section 4 Live-Saving Appliances
A General ....................................................................................................................... 4-1
B
Survival Crafts............................................................................................................. 4-2
C Rescue Boats.............................................................................................................. 4-3
D Lifejackets ................................................................................................................... 4-4
E Immersion Suits and Anti-Exposure Suits .................................................................. 4-4
F Lifebuoys..................................................................................................................... 4-4
G Radio Life-Saving Appliances..................................................................................... 4-5
H Distress Flares ............................................................................................................ 4-5
I Line-Throwing Appliances........................................................................................... 4-5
J Emergency Warnings and Instructions ....................................................................... 4-5
A General
A.1 Definitions
For the purpose of this chapter, unless expressly provided otherwise, the terms used, relating to lifesav-ing appliances, are as defined in SOLAS regulation III/3.
A.2 Rules and Guidelines
A.2.1 Life-saving appliances should be evaluated, tested and approved, as provided in SOLAS regu-lations III/4 and III/5.
A.2.2 New and novel life-saving appliances should meet the applicable provisions of SOLAS chapterIII, including those for servicing and maintenance.
A.2.3 Life-saving appliances and equipment shall comply with the relevant applicable Internationaland/or National Regulations and GL Rules.
All such equipment shall be type approved and tested in acc. to SOLAS and national requirements.
Stricter requirements may be necessary to fulfill survivability requirements.
A.2.3.1 International regulations
The following international regulations are relevant at the time of issue of these Guidelines:
International Maritime Organization (IMO): International Convention for the Safety of Life at Sea(SOLAS), Chapter III - Life-Saving Appliances and Arrangements, as far as practicable
International Life-Saving Appliances Code (LSA), IMO Resolution MSC.320(89) adopted 2011 enter-ing into force on the 1st January 2013
A.2.3.2 European regulations
The following regulations of the European Communities are relevant at the time of issue of these Guide-lines:
Maritime Equipment Directive 96/98/EC (MED) Amended by 2008/67/EC of 30 June 2008
Rules IV Industrial Services
Part 7 Offshore Substations
Chapter 3 General Safety
Section 4 Live-Saving Appliances
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B Survival Crafts
B.1 Manned installations
B.1.1 On each manned installation at least one lifeboat complying with the requirements of the LSACode shall be provided. Depending on outcome of evacuation assessment more than one may be re-quired based on actual size of the installation, overall number of persons onboard and general platformarrangement. The lifeboat capacity has to be sufficient to accommodate the total number of persons onboard.
B.1.2 Special consideration is to be given to retrieval of persons from sea. For this purpose a life-boat with MOB capabilities or a fast rescue boat shall be provided. A lifeboat may be accepted as a res-cue boat, provided that it and its launching and recovery arrangements also comply with the requirementsfor a rescue boat.
B.2 Manned and unmanned installations:
B.2.1 On each installation a launchable liferaft or liferafts, complying with the requirements of theLSA Code shall be provided. The liferafts shall be approved to the actual operating height, capable ofbeing launched on either side of the unit. The total capacity available on each side shall be sufficient toaccommodate the total number of persons on board, unless an analysis is presented and approved by GLto show that a smaller capacity can be accepted.
B.3 Unmanned installations
B.3.1 Special consideration is to be given to retrieval of persons from sea. This can be achieved
by installation of rescue boat on the platform; or
by having a vessel with MOB capabilities in the immediate vicinity of the installation when people areon board.
B.4 Survival craft launching stations
B.4.1 Survival craft launching stations should be in such positions as to ensure safe launching hav-ing particular regard to clearance from steeply overhanging portions of the platform. As far as possible,launching stations should be located so that survival craft can be launched down a straight side of theplatform, except for:
survival craft specially designed for free-fall launching; and
survival craft mounted on structures intended to provide clearance from lower structures.
B.4.2 Operating instructions and illustrations should be provided on or in the vicinity of survival craft
and their launching controls and should: illustrate the purpose of controls and the procedures for operating the appliance and give relevant
instructions or warnings;
be easily seen under emergency lighting conditions; and
use symbols in accordance with the recommendations of SOLAS, MODU Code, National Regula-tions, etc. as far as applicable
B.5 Stowage of survival craft
B.5.1 Each survival craft should be stowed:
so that neither the survival craft nor its stowage arrangements will interfere with the operation of any
other survival craft or rescue boat at any other launching station; as near the water surface as is safe and practicable;
in a state of continuous readiness so that two crew members can carry out preparations for embar-kation and launching in less than 5 min;
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 4 Live-Saving Appliances
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fully equipped as required by the LSA Code; however, in the case of platforms installed in areassuch that, in the opinion of GL, certain items of equipment are unnecessary, GL may allow theseitems to be dispensed with;
as far as practicable, in a secure and sheltered position and protected from damage by fire, explo-sion ore crane operation.
B.5.2 Lifeboats should be stowed attached to launching appliances.
B.5.3 Liferafts should be so stowed as to permit manual release of one raft or container at a timefrom their securing arrangements.
B.5.4 Davit-launched liferafts should be stowed within reach of the lifting hooks.
B.6 Survival craft launching and recovery arrangements
B.6.1 Launching appliances complying with the requirements of the LSA Code should be providedfor all lifeboats and davit-launched liferafts.
B.6.2 Only one type of release mechanism should be used for similar survival craft carried on boardthe unit.
B.6.3 Preparation and handling of survival craft at any one launching station should not interfere withthe prompt preparation and handling of any other survival craft or rescue boat at any other station.
B.6.4 During preparation and launching, the survival craft, its launching appliance and the area ofwater into which it is to be launched should be adequately illuminated by emergency lighting.
B.6.5 Prevent any discharge of fluids on to survival craft during abandonment.
B.6.6 All lifeboats required for abandonment by the total number of persons permitted on board,
should be capable of being launched with their full complement of persons and equipment within 10 minfrom the time the signal to abandon the unit is given.
B.6.7 Manual brakes should be so arranged that the brake is always applied unless the operator, ora mechanism activated by the operator, holds the brake control in the off position.
B.6.8 Consideration should be given to the location and orientation of the survival craft with refer-ence to platform design and environmental orientation, such that clearance of the unit is achieved in anefficient and safe manner having due regard to the capabilities of the survival craft.
C Rescue Boats
C.1 Rescue boats should be stowed:
in a state of continuous readiness for launching in not more than 5 min;
if of an inflatable type, in a fully inflated condition at all times;
in a position suitable for launching and recovery;
so that neither the rescue boats nor their stowage arrangements will interfere with the operation ofany survival craft at any other launching station;
in compliance with section B.5,if they are also lifeboats.
C.2 Launching arrangements should comply with B.6
C.3 Rapid recovery of the rescue boat should be possible when loaded with its full complement ofpersons and equipment. If the rescue boat is also a lifeboat, rapid recovery should be possible whenloaded with its lifeboat equipment and the approved rescue boat complement of at least six persons.
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C.4 Rescue boat embarkation and recovery arrangements should allow for safe and efficient han-dling of a stretcher case. Foul weather recovery strops should be provided for safety if heavy fall blocksconstitute a danger.
D Lifejackets
D.1 A lifejacket complying with the requirements of the LSA Code should be provided for everyperson on board of the platform. In addition, a sufficient number of lifejackets should be stowed in suitablelocations for those persons who may be on duty in locations where their lifejackets are not readily acces-sible. In addition, sufficient lifejackets should be available for use at remotely located survival craft.
D.2 Each lifejacket should be fitted with a lifejacket light complying with the requirements of theLSA Code.
E Immersion Suits and Anti-Exposure Suits
E.1 On each installation immersion suits complying with the requirements of the LSA Code, and ofan appropriate size, for each person on board shall be provided. In addition:
a sufficient number of immersion suits should be stowed in suitable locations for those persons whomay be on duty in locations where their immersion suits are not readily accessible; and
sufficient immersion suits should be available for use at remotely located survival craft positions tothe satisfaction of the Administration.
E.2 In lieu of immersion suits as required by paragraph E.1,an anti-exposure suit complying with
the LSA Code, of an appropriate size, should be provided for every person assigned to crew the rescueboat or assigned to a marine evacuation system party.
F Lifebuoys
F.1 At least eight lifebuoys of a type complying with the LSA Code should be provided on eachunit. The number and placement of lifebuoys should be such that a lifebuoy is accessible from exposedlocations.
F.2 Not less than one-half of the total number of lifebuoys should be provided with self-ignitinglights of an approved electric battery type complying with the LSA Code. Not less than two of theseshould also be provided with self-activating smoke signals Lifebuoys with lights and those with lights andsmoke signals should be equally distributed and should not be the lifebuoys provided with lifelines incompliance with the provisions of paragraph F.3.
Lifebuoys fitted with self-igniting lights or self-activating smoke signals should be located outside hazard-ous areas.
F.3 At least two lifebuoys in widely separated locations should each be fitted with a buoyant life-line, the length of which should be at least one-and-a-half times the distance from the deck of stowage tothe waterline or 30 m, whichever is greater. The lifeline should be so stowed that it can easily run out.
F.4 Each lifebuoy should be marked in block capitals of the Roman alphabet with the name of theinstallation.
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 4 Live-Saving Appliances
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G Radio Life-Saving Appliances
G.1 Two-way VHF radiotelephone apparatus
G.1.1 All lifeboats should carry a two-way VHF radiotelephone apparatus. In addition, at least twosuch apparatuses should be available on the installation, so stowed that they can be rapidly placed in anyliferaft.
G.1.2 All two-way VHF radiotelephone apparatus should conform to applicable performance stan-dards as adopted by IMO.
G.2 Search and rescue locating device
G.2.1 All lifeboats should carry a search and rescue locating device. In addition, at least two suchapparatuses should be available on the installation, so stowed that they can be rapidly placed in any lif-eraft.
G.2.2 All search and rescue locating devices should conform to applicable performance standardsas adopted by IMO.
H Distress Flares
H.1 Not less than 12 rocket parachute flares complying with the LSA Code should be carried andstowed on or near a permanently manned location. If the installation is not permanently manned, theflares should be stowed in a location acceptable to the Administration.
I Line-Throwing Appliances
I.1 A line-throwing appliance complying with the requirements of the LSA Code should be pro-vided.
J Emergency Warnings and Instructions
For alarm and public address system see GL Rules for Instrumentation (IV-7-6).
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 4 Live-Saving Appliances
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Section 5 Access and Transfer
A General ....................................................................................................................... 5-1
B
Boatlanding ................................................................................................................. 5-1
C Personal Transfer by Crane........................................................................................ 5-2
D Helicopter Landing Facilities ....................................................................................... 5-5
E Safety Provisions for Helicopter Facilities................................................................... 5-7
F Helicopter Winching Facilities ..................................................................................... 5-9
A General
The transfer of personnel is one of the hazardous activities for offshore operations. Purpose, scope andresponsibilities shall be clearly defined, to avoid any damage and loss of life. Such transfers require riskassessment, training and competence, responsibility, equipment and communications.
A.1 Risk asessment citeria
Any transfer of persons or cargo between vessel/installation and installation shall be observed under thefollowing premises:
Review of transfer options and selection of most safety practice
Risk of weather and sea conditions, vessel stability and crew experience
Vessels outfitting with position control and holding capacities
Position and orientation of vessel relating to the installation
Communication facilities
Visibility of activities
A.2 Type of transfer
Ship to offshore structures and vice versa
via boat landing
via cranes
via permanent structures
via temporary automatic devices like robot arm or equivalent
via helicopter
A.3 Life sving apliances rquirements
During all personnel transfer operations LSA incl. fast rescue boat shall be available and in state of readi-ness onboard the platform and/or onboard the vessel as required.
B Boatlanding
B.1 Boatlanding by vssel
Boatlandings shall be built for fendering operations when a vessel docks or pushes against an installationstructure.
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 5 Access and Transfer
Edition 2013 Germanischer Lloyd Page 51
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B.1.1 Design
The boat landings shall be designed to the expected loads from the largest expected size of servicevessel. The maximum vessel size and approach speed shall be clearly marked on the boatlanding.
Two boatlandings should be considered, appropriately positioned to accommodate for prevailing
wind, wave and tidal conditions.
B.1.2 Operation
As a minimum, all personnel shall be provided with appropriate personal protection equipment in-cluding safety harness, head protection and a high visibility life jacket. A survival suit shall always beavailable for use.
Cargo, tools and baggage shall not be carried by persons.
B.2 Boatlanding with gangway docking systems
When a vessel mounted gangway which is connected directly or indirectly to the installation will be used,the following criteria should be applied:
B.2.1 Design
All parts (structure of the installation, the landing platform, the gangway and the docking arrange-ment) shall be designed to withstand loads and impacts from the largest expected size of servicevessel.
The vessel shall have a dynamic positioning system.
The maximum vessel size and approach speed shall be clearly marked on the structure. Maximumsafe working load and maximum number of people allowed on the gangway at any one time shall beclearly marked.
The docking system shall be certified by an independent certification body.
B.2.2 Operation
As a minimum, all personnel shall be provided with head protection and a high visibility life jacket. Asurvival suit shall always be available for use.
Cargo, tools and baggage shall not be carried by persons.
C Personal Transfer by Crane
C.1 Crane
The crane shall be equipped with a special mode for personnel transfer. Range and operational loads aresubject to the service requirements, mentioned in the specification and operations manual.
C.2 Type of personnel transfer system
The selection of transfer system depends on Companys knowledge and experiences. Various transfersystem are available in the offshore market.
C.3 Location of boarding
Several restrictions and requirements on board of the installation and on board the vessel shall apply foran easy boarding of personnel:
Size of area for both boarding and inspection for riggers as well as a free hoisting and lowering hasto be safe and adequate.
Service range of lifting appliance during operation has to be considered.
Location of embarkation is to be marked.
Barriers to be installed to limit access only for authorized personal.
Area to be free of obstacles, e.g. each kind of piping, air vents, clamps, bollards etc.
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Chapter 3 General Safety
Section 5 Access and Transfer
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Adequate illumination is to be provided.
Area to be wind-sheltered and spray protected.
Good visibility for both the crane operator and banksman.
Non-skid surface to be provided.
During transfer operation the required staff has to attend the operation permanently and withoutother duties.
In case of emergency safe exits for attending personnel is required.
C.4 Approval, tests and surveys
All equipment required for personal transfer, such as cranes, personal transfer systems, wire and loosegear etc. shall be approved, surveyed and tested. Type approval of sophisticated transfer carriers is pref-erable.
Generally it is not part of the Certificate or Classification procedure for ships or offshore structures, butlifting appliances and personnel transfer systems may be included in the general survey scheme uponOwners request.
C.5 Marking and identification
C.5.1 Lifting appliances
The following items shall be permanently marked on the appliance:
manufacturer
year of construction
type
order or manufacturing number
characteristics like rated load etc.
certificate number of Certifying Body
testing date: Month/year
any other necessary details
C.5.2 Lifting equipment (personnel transfer system)
The following items shall be permanently marked on the equipment:
manufacturer/ supplier
type
serial number
year of construction weight of equipment in kilograms/tons
SWL/WLL in tons/kilograms
capacity of persons
minimum SWL for lifting appliance in tons
Certficate number of Certifying Body
C.5.3 Interchangeable components
The following items shall be permanently marked on the equipment:
certificate number
stamp of Certifying Body
testing date : Month/year
WLL in tons
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Chapter 3 General Safety
Section 5 Access and Transfer
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C.6 Design requirements for lifting appliance
Generally the crane shall be designed in compliance to DIN EN 13852-1 for loading and discharginggoods in the applied range of service and applicable environmental conditions.
The crane incl. ropes shall be approved for man-riding by recognized society.
Due to higher safety aspects for personnel transfers additional requirements shall apply:
separate mode for personnel transfer started by a key-operated switch
this specific mode shall be able to guarantee both soft acceleration and retardation
normal lifting and lowering speed during personnel transfers shall be limited to 0.5 m/s maximum
secondary break circuit with an independent and separate control
range of service shall be limited to wind maximum 10 m/s sea and state maximum significant waveheight of 2 m
connection to emergency power system in case of blackout or other defects
under all circumstances it shall be possible to lowering the load to a safe place
the activation switches or levers shall be of hold-to-run type and shall be marked clearly and perma-nently
the control station for emergency lowering shall be positioned in a place that gives the operator aclear view of the load and the lifting zone
communication system for the crane driver with the responsible person
specific transport appliance for personnel transfer
the automatic overload protection system (AOPS) shall not activated
a direct drive from the lifting equipment is not allowed
C.7 Design requirement for loose gear and interchangeable components
For the purpose of these Regulations loose gear and interchangeable components includes followingitems:
Hooks, swivels, rings, master links, shackles, pennants.
The following shall be observed:
For personnel transfer services all loose gear tube calculated with a minimum static load of 10 timesof the total load of the personnel transfer carrier, i.e. deadweight of equipment including loose gearplus weight of permissible load.
All loose gear shall be compatible with to both the lifting appliance and lifting equipment.
The crane hook has to be equipped with a safety latch or an additional secured safety device be-tween Crane hook and lifting equipment.
The pennant has to be manufactured with ferrules and thimbles. Wire grips are not allowed. Foreach appliance a separate pennant is required, minimum length 1000 mm. Multi-sling pennants(maximum 4) have to be combined in a ring or master link. All shackles shall be C-type.
C.8 Design requirements for personal transfer systems
Several such carrier systems are available on the market with appropriated certification.
The following design requirements are to be observed:
adequate fendering and shock absorbing system
to be equipped with suitable tag line
to be equipped with adequate rails and protective roof
to be equipped with adequate buoyancy devices to ensure self-righting in a stable condition whenafloat
to be painted in bright color and marked with SWL and max. capacity of persons
to be equipped with fast click-buckle system and safe locking devices on access gates
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Chapter 3 General Safety
Section 5 Access and Transfer
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to allow transport of stretchers in horizontal position for medevac purposes
C.9 Loads and load conditions
C.9.1 Loads
Following loads to be considered:
a) Accidental loads
Are loads not normally occurring during installation and operating phases e.g. failing crane operations orfalling dropped objects
b) Dead load
This is the self-weight of any component of the lifting appliance which is not included in any other load
c) Design loads
Load or load condition which forms basis for design and design verification
d) Functional loads
Loads due to normal operations including dynamic amplification
e) Environmental loads
Following influences and load effects have to be taken into consideration: Wind, waves (sea state, mainlysignificant wave height), temperature influences
f) Permanent loads
To be clearly documented and accounted for the design documents and calculations
g) Static load
For design of transfer units a calculation of all relevant forces shall apply including of load distribution ofthe equipment
h) Test loads
Required load for testing the lifting appliance and/or loose gear and/or lifting equipment. Safety factor isgenerally 2.2 SWL.
C.9.2 Load conditions
C.9.2.1 Operating loads
Operating loads include all loads occurring during normal operations, i.e.
permanent loads
defined limited environmental loads
functional loads, here especially crane loads
C.9.2.2 Limitation of operations
Especially for cranes the change over to personnel lifting mode shall apply and extreme environmentalloads, i.e. wind and sea state have to take into account.
Furthermore any range limitation to be observed, if applicable.
D Helicopter Landing Facilities
D.1 Scope
D.1.1 This Section summarizes main design considerations relating to helicopter landing facilities.Details of facilities and aspects which are mostly aeronautically determined, like size and marking of thehelicopter deck, clearances around the platform, sectors for approach and take-off have to be treatedaccording to the relevant international and national regulations or codes.
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D.1.2 In this Section it is assumed that the structure of the helicopter deck is made of steel.
If a structure made of aluminum alloys shall be provided, the design should follow international rules.
D.1.3 For electrical installations on helicopter facilities, e.g. obstruction, perimeter, windsock, floodand status lights see international standards.
National requirements to be observed.
D.2 Standards and regulations
Depending on the location of the offshore installation or the flag state of the offshore unit relevant nationaland international standards and regulations have to be fulfilled besides of these GL Rules.
The following examples can be defined:
ISO 19901-3 Standard: Petroleum and Gas, Industries Specific Requirements for Offshore Struc-tures Topside Structure, 8.5
IMO: Code for the Construction and Equipment of Mobile Offshore Drilling Units (MODU Code),Chapters 9 and 13
IMO Res. A.855(20): Standards for on board Helicopter Facilities
ICS (International Chamber of Shipping): Guide to Helicopter/Ship Operations
CAP 437: Offshore Helicopter Landing Areas
D.3 Helicopter data
For providing relevant helicopter facilities the Owner/Operator has to define the following information:
types of helicopters to be operated
geometrical main dimensions, especially length of fuselage, number and diameters of rotors, etc.
total overall length of the helicopter when the rotors are turning (D-value)
weight, weight distribution and wheel or skid configuration
highest vertical rate of descent on the helicopter deck, e.g. because of a single engine failure, etc.
data for winching operations, if applicable
lashing systems to be provided
possibility of an unserviceable helicopter stowed on the side of the deck while a relief helicopter isrequired to land, if applicable
fuel used and type and capacity of refueling equipment to be provided
starting equipment, if applicable
D.4 Arrangement of the helicopter deck
D.4.1 For the arrangement of the helicopter deck the following aspects have to be considered:
location on the installation/unit with respect to prevailing wind conditions, air turbulence and qualityof the air flow due to adjacent structures
hot gas thermal effects due to flare plumes or exhaust emissions, which may degrade helicopter per-formance by increasing the ambient temperature
clear approach and take-off sector as recommended in international or national standards,
helidecks should be at or above the highest point of the main structure
the obstacle-free sector should be positioned facing into the prevailing wind so that the helicoptercan approach into wind with the deck in the right-hand quadrant as viewed from the helicopter andfacilitating an into wind overshoot in the clear sector
ready and protected access to and from the accommodation area without the need to pass throughworking areas
effect of adjacent structures of one installation or vessel affecting the air quality and obstacle pro-tected surfaces of another installation or vessel
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D.4.2 In addition regarding the arrangement of the helicopter facilities within the whole installation orunit arrangement, applicable national regulations shall be observed.
D.5 Documentation to be submitted
D.5.1 Plans showing the arrangement, scantlings and details of the helicopter deck are to be submit-ted. The arrangement plan is to show the overall size of the helicopter deck and the designated landingarea. If the arrangement provides for the securing of a helicopter or helicopters to the deck, the predeter-mined position(s) selected to accommodate the secured helicopter, in addition to location of deck fittingsfor securing the helicopter is to be shown.
D.5.2 The helicopter for which the deck is designed is to be specified and calculations for the rele-vant loading conditions are to be submitted.
D.5.3 Technical documentation for equipment, aviation fuel system and fire protection/fighting is tobe provided.
E Safety Provisions for Helicopter Facilities
E.1 General
This Section provides additional measures in order to address the fire safety objectives for units fitted withfacilities for helicopters and meets the following functional provisions:
helideck structure should be adequate to protect the unit from the fire hazards associated with heli-copter operations;
fire-fighting appliances should be provided to adequately protect the unit from the fire hazards asso-ciated with helicopter operations;
refueling facilities and operations should provide the necessary measures to protect the unit from thefire hazards associated with helicopter operations. Helicopter facility operation manuals, have to beincluded in the operation manual. Appropriate training should be provided.
E.2 Construction
The construction of the helidecks should be of steel or other equivalent materials. If the helideck formsthe deck head of a deckhouse or superstructure, it should be insulated to A-60 class standard. If alumi-num or other low melting point metal construction that is not made equivalent to steel is used, the follow-ing provisions should be satisfied:
after each fire on the helideck or supporting structure the helideck should undergo a structural analy-sis to determine its suitability for further use.
if the helideck is located above the units deckhouse or similar structure, the following conditionsshould be satisfied:
the deckhouse top and bulkheads under the helideck should have no openings;
windows under the helideck should be provided with steel shutters;
E.3 Escape
A helideck should be provided with both a main and an emergency means of escape and access for fire-fighting and rescue personnel. These should be located as far apart from each other as is practicable andpreferably on opposite sides of the helideck.
E.4 Fire fighting appliances
In close proximity to the helideck, the following fire-fighting appliances should be provided and storednear the means of access to that helideck:
at least two dry powder extinguishers having a total capacity of not less than 45 kg;
carbon dioxide extinguishers of a total capacity of not less than 18 kg or equivalent;
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a foam application system consisting of monitors or foam-making branch pipes capable of deliveringfoam to all parts of the helideck in all weather conditions in which the helideck is intended to beavailable for helicopter operations. The minimum capacity of the foam production system will dependupon the size of the area to be protected, the foam application rate, the discharge rates of installedequipment and the expected duration of application:
a minimum application rate of 6 l/m2 within a circle having a diameter equal to the D-value;
a minimum of 5 min discharge capability should be provided;
foam delivery at the minimum application rate should start within 30 s of system activation;
at least two nozzles of an approved dual-purpose type (jet/spray) and hoses sufficient to reach anypart of the helideck;
in addition to the provisions in Section 8, H.2, two fire-fighters outfits; and other equipment shouldbe stored in a manner that provides for immediate use and protection from the elements, see re-quirements of helideck regulations.
E.5 Drainage
Drainage facilities in way of helidecks should be: constructed of steel or other arrangements providing equivalent fire safety;
lead directly overboard independent of any other system; and
designed so that drainage does not fall onto any part of the unit.
E.6 Helicopter refueling
Where the unit has helicopter refueling, national regulations and the following provisions should be com-plied with:
A designated area should be provided for the storage of fuel tanks which should be as remote as ispracticable from accommodation spaces, escape routes and embarkation stations; and isolated fromareas containing a source of vapor ignition;
E.6.1 The fuel storage area should be provided with arrangements whereby fuel spillage may becollected and drained to a safe location; tanks and associated equipment should be protected againstphysical damage and from a fire in an adjacent space or area;
E.6.2 Where portable fuel storage tanks are used, special attention should be given to:
design of the tank for its intended purpose;
mounting and securing arrangements;
electric bonding; and
inspection procedures;
E.6.3 Storage tank fuel pumps should be provided with means which permit shutdown from a saferemote location in the event of a fire. Where a gravity-fuelling system is installed, equivalent closing ar-rangements should be provided to isolate the fuel source;
E.6.4 The fuel pumping unit should be connected to one tank at a time. The piping between the tankand the pumping unit should be of steel or equivalent material, as short as possible, and protectedagainst damage;
E.6.5 Electrical fuel pumping units and associated control equipment should be of a type suitable forthe location and potential hazards;
E.6.6 Fuel pumping units should incorporate a device which will prevent over-pressurization of thedelivery or filling hose;
E.6.7 Equipment used in refueling operations should be electrically bonded;
E.6.8 NO SMOKING signs should be displayed at appropriate locations.
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F Helicopter Winching Facilities
F.1 Winching operations
F.1.1 For any fixed offshore installation or any mobile offshore unit, for which helicopters are a nor-mal mode of transport of personnel, a helicopter landing area should be provided.
Winching should not be adopted as a normal method of personnel transfer.
F.1.2 If a regular delivery of supplies by winching, like provisions, spare parts, etc., is planned,measures for a convenient material flow from the winching area has to be provided.
F.1.3 If winching operations are required, they shall be conducted in accordance with proceduresagreed between the helicopter Operator, the Owner/ Operator of the offshore installation/unit and GL andshall be contained in the Operating Manual.
F.2 Winching areas
F.2.1 A winching area should, for operational effectiveness and safety, be located at the side or oneend of an offshore installation/unit so that a large part of the maneuvering zone of the helicopter can ex-tend outside the installation/ unit. The position of the operating area shall enable the pilot of the helicopterhovering over the winching area to have an unobstructed view of the installation/unit and be in positionwhich will minimize the effect of air turbulence and flue gases. The area shall, as far as possible, be posi-tioned clear of accommodation spaces, provide an adequate deck area for material and provide for safeaccess to the area from different directions.
F.2.2 In selecting a winching area the desirability of keeping the winching height to a minimum shallalso be borne in mind. In routine operations a winching height greater than 12 m shall be avoided.
F.2.3 A winching area shall provide a maneuvering zone in which a clear zone shall be centered.
The sizes of these areas are to be defined by the responsible national authority or flag state of the off-shore installation/ unit.
F.3 Winching above accommodation areas
Some installation/units may only be able to provide winching areas which are situated above accommo-dation spaces. Due to the constraints of operating above such an area only twin-engine helicopters shallbe used for such operations and the following procedures adhered to:
personnel shall be cleared from all spaces immediately below the helicopter operating area and fromthose spaces where the only means of escape is through the area immediately below the operatingarea
safe means of access to and escape from the operating area shall be provided by at least two inde-
pendent routes all doors, ports, skylights, etc. in the vicinity of the helicopter operating area shall be closed. This
also applies to deck levels below the operating area.
fire and rescue parties shall be deployed in a ready state but sheltered from the helicopter operatingare
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Section 6 Fire Safety - General
A General ....................................................................................................................... 6-1
B
Fire Control Stations ................................................................................................... 6-2
C Fire Control Plans ....................................................................................................... 6-2
D Definitions ................................................................................................................... 6-3
E Submission of Documents .......................................................................................... 6-4
A General
A.1 Safety Philosophy and Design Principles
This Section provides principles for the design, construction and installation of fire protection for offshoresubstations. Minimum requirements will be described.
Requirements for definition of fire scenarios and determination of safety criteria have to be defined inproject specific documents, e.g. safety philosophy ore similar.
For paint stores and battery rooms references to hazardous area classification and applicable codes andstandards for protective measures (especially ventilation and gas detection) will be made.
A.2 Governmental Authority
Attention is directed to the appropriate governmental Authority of the country in which the unit or installa-tion is to be registered, operated or installed, as there may be additional requirements depending on the
size, type and intended service of the unit or installation as well as other particulars and details.
A.3 Application
A.3.1 The requirements in this Section apply to fire safety on fixed offshore installations; they areintended to make reference to the International Convention for the Safety of Life at Sea 2012 (SOLAS),as amended and to the MODU Code for the Construction and Equipment of Mobile Offshore DrillingUnits, 2009 or other applicable guidelines.
A.3.2 The term Approved relates to a material or construction, for which GL or other recognizedauthority has issued an Approval Certificate. A Type Approval Certificate can be issued on the basis of asuccessful standard fire test, which has been carried out by an independent and recognized fire testinginstitute.
A.4 Fire safety objectives
The fire safety objectives of this chapter are to:
prevent the occurrence of fire and explosion;
reduce the risk to personnel caused by fire;
reduce the risk of damage caused by fire to the unit, its equipment and the environment;
contain, control and suppress fire and explosion in the compartment of origin; and
provide adequate and readily accessible means of escape for personnel.
A.5 Functional requirements
In order to achieve the fire safety objectives, the following functional requirements are embodied in theregulations of this chapter as appropriate:
1. division of the unit into main vertical and horizontal zones by thermal and structural boundaries;
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 6 Fire Safety - General
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2. separation of accommodation spaces from the remainder of the unit by thermal and structuralboundaries;
3. restricted use of combustible materials;
4. detection of any fire in the zone of origin;
5. containment and extinction of any fire in the zone of origin;6. protection of means of escape and access for fire-fighting;
7. ready availability of fire-extinguishing appliances;
B Fire Control Stations
B.1 Arrangement
At least one control station, which is to be permanently manned or remote controlled, shall be provided inthe safe area.
Depending on the design of the offshore installation or unit, a second control station may be required. Thearrangement of the control station(s) is to be determined from case to case.
B.2 Equipment
In the control station with the central fire alarm consoles the following items shall be provided:
a) Means of communication between the stations essential to the safety of the installation/unit;
b) arrangements for starting the fire pumps;
c) manual means to set off the general and fire alarms;
d) means of indicating whether fire doors are closed;
e) the fire alarm central consoles, lists and location plans/tables of fire detectors and the control plans;
f) the electric and electronic equipment as defined in GL Rules for Instrumentation (IV-7-6), Section 9, C
C Fire Control Plans
A fire control plan to be submitted with following details:
control systems and stations
fire sections for A and B class divisions boundaries of fire areas
fire detectors and manual call points
fire detection system
fire alarm sounders, e.g. bells, loud speakers, etc.
fixed fire systems including release stations for accommodation, boiler and/or engine rooms, lockers,work shop, etc.
portable fire extinguishing appliances
ventilation systems with dampers, control stations for fans, stopping of forced ventilation and closingappliances for inlets and outlets
emergency escape breathing devices (EEBD)
fire pumps (main and emergency), fire main, hydrants, hoses and nozzles
remote stop of fuel pumps and quick closing valves for fuel tanks
locations of fire control plans remote closures of fire doors, if required
Additionally following drawings required:
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Part 7 Offshore Substations
Chapter 3 General Safety
Section 6 Fire Safety - General
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general arrangement with all levels of the installation/unit indicating the purpose of each area orroom and the arrangements of machinery and equipment
categories of fire sections horizontally and vertically including typical details of each category
D Definitions
D.1 Non-combustible material
Non-combustible material means a material which neither burns nor gives off flammable vapours insuffi-cient quantity for self-ignition when heated to approximately 750 C, this being determined to the satisfac-tion of GL by an established test procedure. Reference is made to the Fire Test Procedure Code, Annex1, Part 1 adopted by IMO by Resolution MSC.307(88). Any other material is a combustible material.
D.2 Standard fire test
A standard fire test is a test in which specimens of the relevant bulkheads or decks are exposed, in a testfurnace, to temperatures corresponding approximately to the standard time-temperature curve.
Reference is made to the 2010 Fire Test Procedure Code (FTP Code).
D.3 "A" class divisions
"A" class divisions are divisions formed by bulkheads and decks which comply with the following require-ments.
D.3.1 "A" class divisions shall be constructed of steel or other equivalent material.
D.3.2 "A" class divisions shall be suitably stiffened.
D.3.3 "A" class divisions shall be so constructed as to be capable of preventing the passage ofsmoke and flames to the end of the one-hour standard fire test.
D.3.4 "A" class divisions shall be insulated with approved non-combustible materials such that theaverage temperature of the unexposed side will not rise more than 140 C as per FTP Code above theoriginal temperature, nor will the temperature, at any one point, including any joint, rise more than 180 Cabove the original temperature within the time listed below:
Class "A-60" 60 minutes
Class "A-30" 30 minutes
Class "A-15" 15 minutes
Class "A-0" 0 minutes
D.4 "B" class divisions
"B" class divisions are divisions formed by bulkheads, decks, ceilings or linings which comply with thefollowing requirements.
D.4.1 "B" class divisions shall be so constructed as to be capable of preventing the passage offlames until the end of the first half of the standard fire test. Reference is made to the 2010 Fire Test Pro-cedure Code.
D.4.2 "B" class divisions shall have an insulation value such that the average temperature of theunexposed side will not rise more than 140 C above the original temperature, nor will the temperature atany one point, including any joint, rise more than 225 C above the original temperature, within the timelisted below:
Class "B-15" 15 minutes
Class "B-0" 0 minutes
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Chapter 3 General Safety
Section 6 Fire Safety - General
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D.4.3 "B" class divisions shall be constructed of approved non-combustible materials, and all mate-rials entering into the construction and erection of "B" class divisions shall be non-combustible, with theexception that combustible veneers may be permitted, provided they meet other requirements of this Sec-tion.
D.5 "C" class divisions
"C class divisions" are divisions constructed of approved non-combustible materials. They need meetneither requirements relative to the passage of smoke and flame nor limitations relative to the tempera-ture rise. Combustible veneers are permitted, provided they meet other requirements of this Section.
D.6 Low flame spread
Low flame spread means that the surface thus described will adequately restrict the spread of flame, thisbeing determined to the satisfaction of GL by an established test procedure.
D.7 Steel or other equivalent material
Where the words "steel or other equivalent material" are used, "equivalent material" means any noncom-bustible material which, by itself or due to insulation provided, has structural and integrity propertiesequivalent to steel at the end of the applicable exposure to the standard fire test (e.g. aluminium alloy withappropriate insulation).
E Submission of Documents
The following documents shall be submitted for approval:
General arrangement plans, indicating the intended purpose of the installation or unit, the purpose ofeach area or room and the arrangements of machinery and equipment.
Plans and documents detailing the arrangements of structural fire protection measures.
Plans and documents detailing fire extinguishing as well as fire detection and alarm systems.
Plans and documents detailing the relevant control system for the remote closure of fire doors andrelevant valves.
Ventilation system plans showing the ducts and fire dampers and the positions of the controls forstopping the system.
Fire control plans.
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Chapter 3 General Safety
Section 6 Fire Safety - General
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Section 7 Passive Fire Protection
A Materials and Definition of Spaces ............................................................................. 7-1
B
Ventilation and Fire Dampers ..................................................................................... 7-6
A Materials and Definition of Spaces
A.1 Scope
Passive fire protection shall ensure that relevant structures, piping and equipment components have ade-quate fire resistance with regard to load bearing properties, integrity and insulation properties during adimensioning fire, and contribute in reducing the consequences in general.
Fire divisions shall ensure that a dimensioning fire and explosion does not escalate into surrounding ar-eas.
Passive fire protection shall prevent or mitigate serious consequences from fire also to protect personnel(heat and smoke) and make escape or evacuation possible.
A.2 Definitions of spaces
A.2.1 Control stations
Spaces which contain the following equipment are considered as Control Stations:
operational control systems
radio and telephone systems including emergency communication fire detection and fire control systems
emergency source of power
fire extinguishing systems serving various locations
A.2.2 Corridors
Corridors are spaces which serve the purpose of connecting other areas in order to provide carriage ofpersonnel.
A.2.3 Accommodation spaces
Accommodation spaces are those used as public spaces, corridors, lavatories, cabins, offices, hospitals,
cinemas, recreational rooms, pantries containing no cooking appliances and similar spaces.
Public spaces are those portions of the accommodation which are used for halls, dining rooms, loungesand similar permanently enclosed spaces.
A.2.4 Stairways
Stairways are internal stairways, lifts and escalators (other than those wholly contained within the ma-chinery spaces) and enclosures thereto.
In this connection a stairway, which is enclosed only at one level, shall be regarded as part of the spacefrom which it is not separated by a fire door.
A.2.5 Service spaces (low risk)
Service spaces (low risk) are lockers, laundries, store rooms and working spaces, in which no flammablematerials are stored.
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Chapter 3 General Safety
Section 7 Passive Fire Protection
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A.2.6 Machinery spaces of category A
Machinery spaces of Category A are all spaces which contain internal combustion type machinery wheresuch machinery has in the aggregate a total power of not less than 375 kW or machinery spaces whichcontain any fuel-fired boiler or heated oil fuel units; and trunks to such spaces.
A.2.7 Other machinery spaces
Other machinery spaces are all machinery spaces except those of Category A containing boilers andother electrical process equipment, oil fuel units, internal combustion engines, generators and major elec-trical machinery, filling stations, refrigerating, ventilation and air-conditioning machinery and similarspaces and trunks to such spaces.
A.2.8 Hazardous areas
Hazardous areas are all those areas where, due to the possible presence of a flammable atmospherearising from the process operations, for example batteries ore stored and handled substances, the use ofmachinery or electrical equipment without proper consideration may lead to fire hazard or explosion.
A.2.9 Service spaces (high risk)Service spaces (high risk) are lockers, store rooms and working spaces in which flammable materials arestored, galleys, pantries containing cooking appliances, paint rooms and workshops other than thoseforming part of the machinery space.
A.2.10 Open decks
Open decks are spaces which are not enclosed and which are fully subject to natural ventilation.
A.2.11 Sanitary and similar spaces
Sanitary and similar spaces are communal sanitary facilities such as showers, baths, lavatories, etc. andisolated pantries containing no cooking appliances.
Sanitary facilities which serve a space and which have an access only from that space, shall be consid-ered as a portion of the space i