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REF. NUMBER AND DATE SHOULD BE QUOTED IN REFERENCE TO THIS LETTER

凡提及本信時請引述編號及㈰期FS 107A (Rev.10/95)

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本處檔號 OUR REF. : (34 ) in FP 314 /07 IV

來函檔號 YOUR REF. :

電報掛號 TELEX: 39607 HKFSD HX

圖文傳真 FAX: 852-2723 2197

電話 TEL NO. : 852-2733 7612

FIRE SERVICES DEPARTMENT L ICENSING & CERTIF ICATION COMMAND F I RE S E RV I C E S H E AD Q U AR T E R S B UI LD I N G ,

5 / F, N o . 1 H on g C h o n g R o ad , Ts i m S h a Tsu i E a s t , K ow l o o n

H o n g K o n g .

1 June 2002

To : Authorized PersonsRegistered F.S.I. ContractorsRegistered Ventilation ContractorsRegistered Lift & Escalator ContractorsFire Insurance Association of H.K.The Association of Registered F.S.I.

Contractors of Hong KongStructural Division, H.K.I.E.Power Companies

The H.K. & China Gas Co.The Lift & Escalator Contractors

AssociationPacific Century CyberWorks LimitedHong Kong Construction AssociationDirector of Architectural ServicesDirector of BuildingsDirector of HousingPetroleum Companies

Dear Sirs,

FSD Circular Letter No. 1/2002Rules for Fire Detection and Alarm Systems for Buildings

This Circular Letter announces the adoption, with local modifications, ofRules of the Loss Prevention Council for automatic fire detection and alarm installationsfor the protection of property (LPC Rules) and British Standard for the installation ofautomatic fire detection and alarm systems for buildings (BS 5839 : Part 1 : 1988) forthe system design, installation and servicing of fire detection system.

Subsequent to the replacement of Rules of the Fire Office’s Committee forautomatic fire alarm installation 12th edition (FOC Rules) by the LPC Rules, theWorking Group on Fire Service Installations Inspection Procedures was given the taskto look into the feasibility and practicability of adopting the LPC Rules and BS 5839 forlocal application. After prolonged discussion and extensive consultation with theindustry and respective interested parties, the Working Group has now completed itsstudy and recommended, subject to modifications as specified in Lists One to Fourannexed to this Letter, to adopt the LPC Rules and BS 5839.

REF. NUMBER AND DATE SHOULD BE QUOTED IN REFERENCE TO THIS LETTER

凡提及本信時請引述編號及㈰期FS 107A (Rev.10/95)

The new standard will take effect from 1 January 2003 and the reference ofFOC Rules in the current Code of Practice for Minimum Fire Service Installations andEquipment will be amended to LPC Rules and BS 5839 in due course.

Yours faithfully,

(LAU Kwai-shan)for Director of Fire Services

Encl.

Recommendations of the Working Groupfor FSI Inspection Procedures

Except those named in the following lists, all clauses stipulated in the following rulesand code of practice including Notes, Commentary and Recommendations are to be followed :-

(a) Loss Prevention Council Rules for Automatic Fire Detection and Alarm Installations forthe Protection of Property (Schedule for the use of BS 5839:Part 1:1988)

(b) BS 5839 : Part 1 : 1988 – Fire Detection and Alarm Systems for Buildings, Part 1. Code ofPractice for System Design, Installation and Servicing

List One : Clauses not to be applied

List Two : Clauses to be replaced by modified conditions

List Three : Clauses to be provided with acceptable alternatives

List Four : Clauses to be taken as reference only

Annex : Table 2: Spacing and siting of detectors onhoneycomb, waffle and similar ceilings(for BS Clause 12.2.3)

Abbreviations :

The following abbreviations shall be used in this document.

BS 5839orBS

- BS 5839 : Part 1 : 1988 – Fire Detection and Alarm Systems for Buildings,Part 1. Code of Practice for System Design, Installation and Servicing

EECoP - Code of Practice for the Electricity (Wiring) Regulations issued by Electricaland Mechanical Services Department

FRC Code - Code of Practice for Fire Resisting Construction, 1996 issued by the BuildingsDepartment

FSCC - Fire Services Communication Centre

FSCoP - Codes of Practice for Minimum Fire Service Installations and Equipment andInspection, Testing and Maintenance of Installations and Equipment issued byHong Kong Fire Services Department

HKFSDorFSD

- Hong Kong Fire Services Department

LPC RulesorLPC

- Loss Prevention Council Rules for Automatic Fire Detection and AlarmInstallations for the Protection of Property (Schedule for the use of BS5839:Part 1:1988)

Definition :

The following definition is to be used in this document.

Fire Compartment - An enclosed space or compartment which shall be in full compliancewith the compartmentation requirements as stipulated in Clause 5 ofthe FRC Code. It is not intended to refer to fire compartments forseparating protected areas, areas of different uses, areas of differentoccupancies, and areas of special hazards.

List One : Clauses not to be applied

List One : Clauses not to be appliedLPC Rules for Automatic Fire Detection and Alarm Installations for the Protection of Property

( Schedule for the use of BS 5839 : Part 1 : 1988 ) and BS 5839 : Part 1 : 1988

Page 1 of 4

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Context Reason

1.1 Definitions(Page 2)

- “together with the following:Listed systemAn automatic fire detection and alarm system included in the Loss PreventionCouncil’s List of approved products and services Part 3, Section 1.…………………………………..Listed transmission systemAn alarm transmission system included in the Loss Prevention Council’s List ofapproved products and services Part 3, Section 1.”

Foreign definitions shall not beapplied.

1.2 Clause 1(Page 2)

- “The insurer shall be consulted at an early stage on any aspects of the installationnot conforming to these Rules.”

Foreign requirements shall not beapplied.

1.3 Clause 4(a)(Page 2)

- “The insurer shall be consulted as appropriate as indicated without thisdocument.”

Foreign requirements shall not beapplied.

1.4 - Clause 7.2Para. 1(g)(Page 12)

“For systems in buildings in multiple occupation (see 4.4) the zoning arrangementshould take account of the fact that premises may not all be occupied at the sametime and no zone should include areas in more than one occupancy.”

It is impractical to implement therequirements of this Clauselocally.

1.5 - Clause 9.3Para. 1

(Page 13)

“in all accessible parts of the building.” It is impractical to implement thisrequirement.

1.6 - Clause 9.12(Page 15)

“Where intercommunication or public address equipment is used in lieu ofconventional sounders, the following should be ensured.(a) …………………………………………Where the transmitted alarm is not a voice message, its audibility should complywith the recommendations of 9.2 for property protection systems or 9.3 for lifeprotection systems.”


1.7 - Clause 9.13(Page 17)

“In some systems much information about both the state of the system and anyfire condition is available. …………… , the amount of information given islimited to that which is both necessary and sufficient.”


1.8 - Clause 9.14(Page 17)

“In general, fire alarm sounds should be used for other purposes only if theresponse required is identical to that which would be ..………… with one of thesounds being reserved for fire alarm use.”




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(Page 20)

“Before a fire detection system is installed for insurance purposes, earlyconsultations should be held with the insurers.”

Fire detection system is classifiedas one of the fire serviceinstallations under the FSCoP andshould be designed in fullaccordance with FSD’srequirements.

1.10 - Clause 12.2.6(Page 21)

“Although an increased ceiling height means that the fire will be larger when it isdetected, …………. , or by point-type smoke detectors if their height does notexceed 18 m.”

The requirements of this Clausehave been incorporated into themodified BS Clause 12.2.5.

1.11 - Clause 12.2.16Para. 1

(Page 22)

“In general, if the room ventilation rate exceeds four changes per hour thenadditional detectors may be required. For applications in computer suites or dataprocessing areas, BS 6266 should be consulted.”

The fire service requirements forventilation/air conditioningcontrol systems shall followFSCoP.


(Page 24)

“In some very small premises simple hand-operated devices such as hand bells orgongs may be sufficient. However, in most other premises a more sophisticatedalarm system will be necessary, able to be heard throughout the premises andperhaps incorporating automatic fire detection.”

In accordance with FSCoP, puremanual systems such as handbells, whistles, rotary gongs, etc.are not within the scope of theFSCoP and the sound level of thealarm signals shall comply withthe requirements as stipulated inthe modified BS Clause 9.4.1.

1.13 - Clause 13.4(Page 24)

“, modified as recommended in 13.5 to 13.7.” As HKFSD has no suchclassification as type L1, L2 andL3 systems, Clause 13.5 to 13.7which are related to type L3, L2and L1 systems shall not beapplied.


(Page 30)

“Any switch that can disconnect the power supplies to all or part of the systemshould be coloured red and labelled ‘FIRE ALARM : DO NOT SWITCH OFF’.”

The requirements of warninglabels have been incorporated inthe modified Para. 3 of BS Clause16.2.



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1.15 - Clause 16.5.2(Page 32)

“Systems installed primarily to protect property (type P)……………… , at which time a further 24 h supply will remain; hence a totalduration of 48 h will be needed. ”

For practical purposes, therequirements on standby supplyfor property protection asstipulated in clauses 16.5.2.1 to16.5.2.3 shall be the same for lifeprotection as stipulated in themodified BS Clauses 16.5.1 and16.5.1.1.

1.16 - Clause 17.2Para. 2(a)(Page 33)

“Cables used within the protected premises for the transmission of the alarm to aremote centre should be included in this class.”

Once this type of cable hastransmitted the signal, its functionfor prolong operation is no longerrequired.

1.17 - Clause 17.11(Page 35)

“and should be considered as needed to give prolonged operation in a fire (see17.4.2).”

Once this type of communicationcable has transmitted the signal tothe FSCC, its function forprolong operation is no longerrequired.

1.18 Clause 21(b)(Page 4)

- “The insurer shall be consulted with regard to any deviations from these Rulesencountered during installation.”

Inappropriate to be adoptedlocally.

1.19 Clause 26(c)(Page 4)

- “The insurer shall be invited to witness these functional / compatibility tests.” Foreign requirements shall not beapplied.

1.20 Clause 26(d)(Page 4)

- “If it is uncertain that detectors have been placed in the best positions, or thatadverse environmental conditions might cause detection problems, …………..The insurer shall be invited to witness such a test.”


1.21 Clause 26(e)(Page 4)

- “After the successful conclusion of the above, the installer or his supervisorylisted installer shall issue the user with a certificate, described in Appendix A.Any deviations (which shall have been previously accepted by the insurer) shallbe stated.”


1.22 - Clause 29.2.2Para. 2

(Page 43)

“If the fire alarm system is connected to a 999 automatic dialing unit, …………. ,but where used the inhibited state should be indicated by the use of a notice onthe control equipment.”




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1.23 - Clause 29.3.2Para. 1(a)(Page 45)

“(See appendix E)” Foreign statutory requirementsshall not be applied.

1.24 - Appendix E(Page 52)

“Ionization chamber smoke detectors contain small amounts of radioactivematerials. ………………….. , from the Health and Safety Executive, or from theNational Radiological Protection Board*.”

Foreign statutory requirementsshall not be applied.

List Two : Clauses to be replaced by modified conditions

List Two : Clauses to be replaced by modified conditionsLPC Rules for Automatic Fire Detection and Alarm Installations for the Protection of Property


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2.1 Scope(Page 1)

- “This document specifies Insurers’requirements for the design, installation,commissioning/testing, use andservicing of fire detection and alarmsystems primarily for the protection ofproperty, that are additional to therequirements of BS 5839: Part 1, Lifesafety requirements are covered in BS5839: Part 1: 1988.”

“This document specifies HKFSD’srequirements for the design, installation,commissioning/testing, use andservicing of fire detection and alarmsystems primarily for the protection ofproperty, that are additional to therequirements of BS 5839: Part 1 and allmodifications to the BS to suit localapplications, Life safety requirementsare covered in BS 5839: Part 1: 1988.”

To suit local requirements.


- “Only fire detection and alarmequipment conforming to one of thefollowing shall be used: ..……….where systems do not meet the abovecriteria, yet are deemed most suitablefor a particular situation, the Insurershall be consulted.”

“Only fire detection and alarmequipment conforming to HKFSD’srequirements shall be used. List of fireservice installations and equipmentrequiring approval from HKFSD shallfollow FSD Circular Letter No. 4/98.”



- “Systems shall be designed, installedand commissioned by either:(i) an LPC listed installer(ii) an installing company not listed

but supervised by an LPC listed installer.”

“All installation, maintenance,inspection, testing and commissioningworks shall be done by a registered fireservice installation contractor. In casethere are electrical works involved, allthe associated electrical works shall bedone by a registered fire serviceinstallation contractor who shall also bea registered electrical contractor.”



- “(Specific reference to BS Clause 6.6).No single detection loop circuit shallcover an area greater than 10 000 m2 orbe used to monitor more than fivedetection zones unless prior agreementhas been given by the insurer.”

“No single detection loop circuit shallcover an aggregate floor area greaterthan 10,000 m2 calculated on thoseportions of the premises installed withfire detectors unless prior agreement hasbeen given by the HKFSD.”

To clarify the calculation methodof 10 000 m2. The limits on thenumber of detectors for onesingle loop circuit should be inaccordance with manufacturer’srecommendation.



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2.5 - Clause 6.6.1Para. 1

(Page 8)

“Care should be taken to ensurecompatibility of all components whichare part of the fire alarm system orconnected with it in any way (see 6.7).”

“Care should be taken to ensurecompatibility of all components whichare part of the fire alarm system orconnected with it in any way (see 6.7).Manufacturer’s confirmation orcertification on the compatibility of allcomponents including the types andbrand of detector used shall be providedfor verification in each HKFSD’s fireservice installation acceptance test orinspection.”

To suit local practice andrequirements.

2.6 - Clause 6.6.1New Para.(Page 8)

- Add the following Para. to the last Para.of this Clause :

“Details of fire service installations andequipment requiring approval fromHKFSD shall follow the list in the FSDCircular Letter No. 4/98.”

To add local practice andrequirements.

2.7 - Clause 6.6.2Para. 1(3)(Page 8)

“if a circuit is used for more than onezone and multiple faults within one firecompartment could remove protectionfrom an area greater than that allowedunder 7.2 (a) to (d) for a zone, then thecircuit within that compartment issuitably protected (see 17.15);”

“if a circuit is used for more than onezone and multiple faults within one firecompartment could remove protectionfrom an area greater than that allowedunder 7.2 (a) to (d) for a zone, then thecircuit within that compartment shall bemechanically protected in accordancewith Clause 17.5.2;”

To clarify the meaning of“suitably protected” for alarmcircuit under this clause.

2.8 - Clause 6.6.2Para. 1(4)(Page 8)

“two simultaneous faults should notremove protection from an area greaterthan 10 000m2.”

“two simultaneous faults should notremove protection from an aggregatearea greater than 10,000 m2 calculatedon those portions of the premisesinstalled with fire detectors.”

To clarify the calculation methodof 10 000 m2.



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2.9 - Clause 6.6.2Para. 4

(Page 8)

“In particular it is desirable thatprovision should be made so thatindividual detectors can be testedwithout either sounding an alarm orrequiring the complete system to bedisabled to prevent such an alarm.”

“In particular it is required thatprovision should be made so thatindividual detectors can be testedwithout either sounding an alarm orrequiring the complete system to bedisabled to prevent such an alarm.”

To confirm the mandatoryrequirements of this Para.

2.10 - Clause 6.6.3Para. 1

(Page 8)

“Any sounder that is necessary in orderto reach the audibility levelsrecommended in clause 9 should becapable of electrical disconnection fromthe alarm sounder circuit only by theused of a special tool”

“Any sounder that is necessary in orderto reach the audibility levelsrecommended in clause 9 should becapable of electrical disconnection fromthe alarm sounder circuit only by the useof a tool recommended by themanufacturer”

To clarify the meaning of “specialtool”.

2.11 - Clause 7.2Para. 1(a)(Page 11)

“The floor area of a single zone shouldnot exceed 2000 m2.”

“The aggregate floor area of a singledetector zone should not exceed 2,000m2 calculated on those portions of thepremises installed with fire detectors.”

To clarify the calculation methodof 2000 m2.

2.12 - Clause 7.2Para. 1(f)(Page 11)

“In systems containing only manual callpoints (type M systems) location of afire will usually ……….. it may bedifficult to locate a call point fromwhich an alarm originated.NOTE 1. This relaxation on the size of thezone does not apply to the recommendationsfor power supplies in type M systems givenin 16.6.”

“The zoning of manual call points(break glass units) shall be at least onezone per floor or storey.”

To suit local practice.


- “The method of connection shall be viaan LPC listed transmission system.”

“The method of connection shall be viaan HKFSD acceptable transmissionsystem.”




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- “A permanently manned on-site privatefire brigade control room may beacceptable as an alternative to thefacilities listed in Clause 8 (c), at thediscretion of the insurer. (Also seeClause 3 (b)).”

“A permanently manned on-site privatefire brigade control room may beacceptable as an alternative to thefacilities listed in Clause 8 (c), at thediscretion of the Director of FireServices.”


2.15 - Clause 8.1 – 8.3(Page 12)

“8.1 GeneralFor a fire detection system to give themaximum benefit, …………… and toany consequential need for fireprotection.”

“A direct line connection shall beprovided to the FSCC or such otherpremises as may be agreed with theDirector of Fire Services.”

To suit requirements asstipulated in FSCoP.


(Page 13)

“and its case should be clearly marked‘FIRE ALARM’.”

“and its case should be painted in redcolour and clearly marked ‘FIREALARM’ ‘㈫警’ in white colour. Theheight of all the English and Chinesewordings shall not be less than 10 mmand 15 mm respectively.”



(Page 13)

“In the areas where an alarm is required,it should meet the audibilityrecommendations of 9.4.”

“In the areas where an alarm is required,it should meet the audibilityrecommendations in 9.4 except allrequired staircases as defined in theFRC Code and the associated protectedlobbies which lead only to suchstaircases.”

To adopt a more practical way forimplementation.



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“The number of fire alarm soundersused should be sufficient to produce thesound level recommended in 9.4 in allaccessible parts of the building.”

“The number of fire alarm soundersused should be sufficient to produce thesound level recommended in 9.4 exceptall required staircases as defined in theFRC Code and the associated protectedlobbies which lead only to suchstaircases.”


(Page 13)

“At least one sounder should beprovided in each fire compartment.”

“All buildings except domesticbuildings shall be provided with at leastone sounder in each fire compartment.”

To adopt a more practical way forimplementation.

2.19 - Clause 9.4.1(Page 13)

“Level of sound. A minimum soundlevel of either 65 dB(A), or 5 dB(A)above any other noise likely to persistfor a period longer than 30 s, …………can reasonably be expected to wake asleeping person in most circumstances.”

“Level of sound. For domestic building,a minimum sound level of either 60dB(A), or 5 dB(A) above any othernoise likely to persist for a period longerthan 30 s, whichever is the greater. Forother types of building, a minimumsound level of either 65 dB(A), or 5dB(A) above any other noise likely topersist for a period longer than 30 s,whichever is the greater.

The location of all sound measurementshall be taken at three (3) metres fromthe inside of the main entrance doorwith all doors shut off at

(a) all flats for domestic buildings,(b) all rooms for institutional / hotel

buildings, and(c) all rooms / premises for other types

of buildings.”

To adopt a more practicalapproach for the requirements onthe audibility of alarms as agreedin the 121th meeting of theWorking Group for FSIInspection Procedures.



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(Page 14)

“If the fire alarm system extends toseveral buildings, or to other parts of abuilding unlikely to be affected by a firein one zone, ……………. perhapsbecause of flammable contents ordifficult egress.”

“The zoning on the sounder operation ofthe manual and automatic fire detectionsystem shall comply with thoserequirements as stipulated in FSDCircular Letter No. 4/96, Part VIII, Item4.”

To suit requirements as stipulatedin FSD Circular Letter No. 4/96.


(Page 14)

“but not so high as to cause difficulty invision due to glare.”

“but not so high as to cause difficulty invision due to glare.In addition, the provisions, flashing lightintensity, and colour, labeling, powersupply requirement shall comply withthe requirements as stipulated in FSDCircular Letter No. 4/2001. Otheracceptable standard and requirementsfor the design of the visual fire alarmsignals and system can also be found inFSD Circular Letter No. 4/2001.”

Add local requirements for visualfire alarm system.


(Page 15)

“In addition to the silencing switch atthe control equipment, provision may bemade for silencing switches inindividual zones remote from thecontrol equipment.Operation of a remote silencing switchshould :(1) …………………….(2) ……………………..(3) be automatically reset on operation

of the main silencing switch orcessation of the alarm condition.”

“No silencing switch device can beinstalled as a single component. Thesedevices have to be incorporated in eitherthe main fire services control panel or arepeater panel.”

To confirm that the installation ofremote silencing switches are notallowed locally.



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()

“Manual call points should be locatedon exit routes and in particular on thefloor landings of stairways and at exitsto open air.”

“Manual call points should be located ateach hose reel point and, in particular,adjacent to all storey exits (or theentrance lobby in lieu if such lobbyleads only to the storey exits) andadjacent to all exits to open air (whetheror not the exits are specificallydesignated as fire exits).”

To clarify that manual call pointsshould not be located in the floorlandings of staircases and shouldbe installed at all storey exits andat locations as stipulated inFSCoP i.e. at each hose reelpoint.


(Page 17)

“In general, call points should be fixedat a height of 1.4 m above the floor, ateasily accessible, well illuminated andconspicuous positions free fromobstruction.”

“In general, call points should be fixedat a height of 1.2 m above the finishedfloor level, at easily accessible, wellilluminated and conspicuous positionsfree from obstruction.”

To comply with the requirementsas stipulated in FSCoP.


- “With reference to Table 1 (Limits ofceiling heights), the “Rapid attendance”limits are only applicable for Class Ainstallations (see Clause 3(b), otherwisethe “General limits” shall be used.”

“The maximum ceiling height designand installation limits for detector shallfollow the “Rapid attendance” limits ofTable 1 (Limits of ceiling heights).”

In order to suit current localpractice, the data shown in thecolumn of “Rapid attendance” inTable 1 shall be used as generaldesign and installation limits.

2.26 - Clause 12.2.3New Para.(Page 20)

- Add the following Para. to the last Para.of this Clause :

“Where a ceiling comprises a series ofsmall cells (a honeycomb or waffleceiling), detector spacing and sitingshould be in accordance with Table 2 ofthe Annex.”

To add the spacing and sitingrequirements of detectors onhoneycomb, waffle and similarceilings.



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2.27 - Clause 12.2.5(Page 21)

“detectors should not normally bemounted on ceilings higher than thegeneral limits of table 1. If smallsections of a ceiling (not exceeding intotal 10 % of the ceiling area) exceed inheight the general limits of table 1,those higher sections may be protectedby point-type heat detectors providedthat the ceiling height in the highersections does not exceed 10.5 m, or bypoint-type smoke detectors providedthat the ceiling height in the highersections does not exceed 12.5 m.”

“detectors should not normally bemounted on ceilings higher than therapid attendance limits of table 1. Ifsmall sections of a ceiling (notexceeding in total 10 % of the ceilingarea) exceed in height the rapidattendance limits of table 1, those highersections may be protected by point-typeheat detectors provided that the ceilingheight in the higher sections does notexceed 15 m, or by point-type smokedetectors provided that the ceilingheight in the higher sections does notexceed 18 m.”

In order to suit current localpractice, the data shown in thecolumn of “Rapid attendance” inTable 1 shall be used as generaldesign and installation limits.

2.28 - Clause 12.2.11(Page 21)

“Voids less than 800 mm in height neednot have independent coverage…………….. precautions against thedeposition of dirt or dust may beneeded.”

“Voids or that portion of voids 800 mmor less in height / depth shall not requirethe installation of detectors.”


2.29 - Clause 12.2.17(Page 22)

“If a detector is concealed, for examplein a void, then it may be desirable toprovide a remote indication of itsoperation. If necessary a label should beprovided at the indicator to show thelocation of the detector.”

“If a detector is concealed, for examplein a void, then it is required to provide alocal indication with label to show thelocation of the detector.”

To suit local mandatoryrequirement for detectorsinstalled in concealed space.


- “However, where life safety is also aconsideration, Clause 13 shall beconsulted and any measures regarded asnecessary by the Insurers shall be inaddition to those required in BS Clause12.”

“However, where life safety is also aconsideration, Clause 13 shall beapplied in addition to those required inBS Clause 12.”




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(Page 24)

“A type M system, operated by manualcall points only, may be all that isneeded …………… , or alternativeescape routes will always be available.”

“In addition to the requirements of thisstandard, all manual fire alarm systemsshall be in full compliance with thespecification of fire alarm systems asstipulated in FSCoP.”

To suit additional requirements asstipulated in FSCoP.


- “are not permitted unless prioragreement has been given by theinsurer.”

“are not permitted unless prioragreement has been given by theDirector of Fire Services.”



(Page 27)

“it unlikely that a fire would goundetected by human agency, it may beuseful to consider a time related, dualsensitivity system.”

“it unlikely that a fire would goundetected by human agency, subject tothe approval from the Director of FireServices, the incorporation of timerelated, dual sensitivity system in thefire detection system may beconsidered. The approval criteria forsuch system shall follow FSD CircularLetter No.4/2001.”

To suit requirements as stipulatedunder FSD Circular Letter No.4/2001.


(Page 27)

“Repeated switch operations may beused to extend the delay, but the delayshould not extend more than 45 minafter the last operation of the switch.”

“Repeated switch operations should notextend more than 6 min after the lastoperation of the switch.”



(Page 27)

“it may be desirable to delay theautomatic transmission of an alarm tothe fire brigade for a sufficient time toallow the alarm to be investigated. Forthis purpose the incorporation of atransmission signal delay unit may beconsidered.”

“it may be desirable to delay theautomatic transmission of an alarm tothe fire brigade for a sufficient time toallow the alarm to be investigated. Forthis purpose, subject to the approvalfrom the Director of Fire Services, theincorporation of a transmission delayunit may be considered. The approvalcriteria for such unit shall follow FSDCircular Letter No.4/2001.”




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2.36 - Clause 14.7Para. 3(b)(Page 28)

“The call to the fire brigade or remotemanned centre may be delayed for aninitial period not exceeding 2 min.”

“The call to the fire brigade or remotemanned centre may be delayed for aninitial period not exceeding 1 min.”


2.37 - Clause 14.7Para. 3(c)(Page 28)

“indicating that an investigation is inprogress, then the alarm may be delayedfor a further period, not exceeding 5min from the manual operation, subjectto agreement with interested parties.”

“indicating that an investigation is inprogress, subject to the approval by theDirector of Fire Services, then the alarmmay be further delay for a period, notexceeding 5 min from the manualoperation.”



(Page 28)

“The alarm should be automaticallytransmitted to the fire brigade after afixed delay period not greater than 2min, unless a manual override operationhas been carried out.”

“The alarm should be automaticallytransmitted to the fire brigade after afixed delay period not greater than 1min, unless a manual override operationhas been carried out.”


2.39 - Clause 15.2.1(Page 28)

“such that the response of alarmsounders meets the recommendations of10.1.”

“such that the response of alarmsounders meets the recommendations of10.1. All fire alarm control panels,detectors, alarm sounders integratedwith strobe light for use in conjunctionwith automatic fire alarm system shallbe approved by HKFSD.”


2.40 - Clause 15.2.2(Page 28)

“However, if the area covered by amanual system could fall within thelimits of a single zone under therecommendations of 7.2, irrespective ofhow many zones are actually used, thencontrol and indicating equipmentcomplying with all therecommendations of appendix G may beacceptable subject to the approval of theappropriate authority.”

“All fire alarm control panels, manualcall points and alarm bells shall beapproved by HKFSD.”




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2.41 - Clause 15.3.7(Page 29)

“If it is necessary for practical reasonsto mount the control and indicatingequipment outside the building…………. Similar precautions may benecessary if the equipment has to beinstalled in a severe environment withina building.”

“A weather proof protective enclosureswith adequate ventilation should beprovided to protect the control andindicating equipment from beingdamaged by high humidity and water ifthe equipment has to be installed in asevere environment within or outside abuilding.”

To clarify the requirements forprotection of control andindicating equipment from theeffect of severe environment.

2.42 - Clause 15.4.1(Page 29)

“The indications should be such thatthey can be easily, quickly andunambiguously related to the position inthe building from which the alarm hasoriginated.”

“The indications should be displayed inboth Chinese and English such that theycan be easily, quickly andunambiguously related to the position inthe building from which the alarm hasoriginated.”



(Page 30)

“Any cable or apparatus directlyconnected to a public or privatedistribution supply should be inaccordance with the current edition ofthe IEE Wiring Regulations …………..in accordance with the IEE WiringRegulations : TN-C, TN-S, TN-C-S,TT.”

“Any cable or apparatus directlyconnected to the public supply shall bein accordance with the current edition ofthe EECoP.”




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(Page 30)

“Connections to the mains supplyshould be via an isolating protectivedevice (e.g. an isolating switch-fuse)reserved solely for the purpose, its covercoloured red and labelled ‘FIREALARM : DO NOT SWITCH OFF’.The isolating protective device shouldbe secured from unauthorized operation.It may be desirable for the isolatingprotective device to be contained in asecurely closed box with a frangiblecover.”

“Connections to the mains supplyshould be via an isolating protectivedevice (e.g. an isolating switch-fuse)reserved solely for all the fire serviceinstallations.Except fused spur units installedadjacent to fire alarm and repeaterpanels, every isolator, switch andprotective device that is capable ofdisconnecting the mains supply to thefire alarm system should be situated in aposition inaccessible to unauthorizedpersons or be protected againstunauthorized operation.”




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(Page 30)

“An additional warning label should beprovided, ……….. , a label should befixed to the main isolating devicereading ‘Warning : this switch alsocontrols the supply to the fire alarmsystem.’ ”

“Every isolator and protective devicethat can isolate the supply to the firealarm system, other than the mainisolator for the building, should belabelled either :(a) ‘FIRE ALARM’ ‘㈫警警報’, inthe case of a protective device thatserves only the fire alarm circuit, butincorporates no switch;(b) ‘FIRE ALARM. DO NOT SWITCHOFF’ ‘㈫警警報. 切勿切斷電源’,in the case of a switch (whetherincorporating a protective device or not)that serves only the fire alarm circuit.(c) ‘WARNING. THIS SWITCH ALSOCONTROLS THE SUPPLY TO THEFIRE ALARM SYSTEM’ ‘警告. 此電掣乃供應㈫警警報系統電源’,in the case of any switch thatdisconnects the mains supply to both thefire alarm system and to other circuits.All labels shall be engraved in whiteletter/character with red colourbackground. The height of all theEnglish and Chinese wordings shall notbe less than 10 mm and 15 mmrespectively.”

To clarify the requirements andprovision of warning labels.



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(Page 30)

“The design of the system should ensurethat residual current devices are notnecessary as a preventive measureagainst electric shock. ……….. inresponse to a fault on the general wiringdoes not result in interruption of the firealarm supply.”

“The circuit supplying the fire alarmsystem should not be protected by aresidual current device unless this isnecessary to comply with therequirements of the EECoP. Where aresidual current device is necessary forelectrical safety, a fault on any othercircuit or equipment in the buildingshould not be capable of resulting inisolation of the supply to the fire alarm.”


2.47 - Clause 16.3.1Para. 2

(Page 30)

“Where no public supply system isavailable, privately generated powermay be used.”

“Where no public supply system isavailable, subject to the approval of theDirector of Fire Services, privatelygenerated power may be used.”

This should be considered caseby case on each individualproject.

2.48 - Clause 16.5.1(Page 31)

“Systems installed primarily for lifesafety (type L)”

“Systems installed primarily for lifesafety and / or Property Protection (typeL and P)”

For practical purposes,requirements on duration ofstandby supply for both lifesafety and property protectionshall be the same.

2.49 - Clause 16.5.1.1(Page 31)

“In a system installed to protect life, thefire alarm system should be in anoperation condition at all times thatpeople are present on the premises.”

“In a system installed to protect life andproperty, the fire alarm system shouldbe in an operation condition at alltimes.”

This clause shall apply to bothsystems on life safety andproperty protection.

2.50 - Clause 16.6(Page 32)

“Power supplies for manual systemsshould generally comply with therecommendations of 16.1 to 16.5.However, if the area covered by amanual system could fall within thelimits ………….. if public or privateelectricity mains are not available.”

“Power supplies for manual systemsshould generally comply with therecommendations of 16.1 to 16.5.”

Requirements for power supplyof manual system shall be thesame as that for automaticsystem.



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- “One of the cable types indicated in BSClause 17.4.2 or a cable determined byLPC to be equivalent* shall be used.However, should the cable types beunsuitable for a certain application (egtransmission of high baud rate digitalinformation), then another cable typemay be used subject to the agreement ofthe insurer.”

“One of the cable types indicated in BSClause 17.4.2 or a cable comply withother international standardsrecommended by the manufacturer andacceptable to HKFSD shall be used.However, should the cable types beunsuitable for a certain application (egtransmission of high baud rate digitalinformation), then another cable typemay be used subject to the assessmentand acceptance of the Director of FireServices.”



- “The insurer shall be consulted withregard to the operation of ancillaryservices by the fire detection and alarmsystem.”

“HKFSD shall be consulted with regardto the operation of ancillary services bythe fire detection and alarm system.”


2.53 - Clause 24.4.1Para. 1

(Page 39)

“The installation should be undertakengenerally in accordance with the latestedition of the IEE Wiring Regulations.NOTE 1. Although those parts of the firealarm system connected to a safety sourceare specifically excluded from coverage bythe IEE Wiring Regulations, the generalprinciples of good practice in wiringinstallations outlined in the regulationsshould be followed throughout the fire alarmsystem.”

“The installation shall be done inaccordance with the latest edition of theEECoP.”




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2.54 - Clause 24.4.3(Page 39)

“it should be enclosed in a suitable andaccessible junction box labelled ‘FIREALARM’ to avoid confusion with otherservices.”

“it should be enclosed in a suitable andaccessible junction box labelled ‘FIREALARM’ ‘㈫警警報’ engraved inwhite letter/character with red colourbackground. The height of all theEnglish and Chinese wordings shall notbe less than 10 mm and 15 mmrespectively to avoid confusion withother services.”


2.55 - Clause 25.4(Page 40)

“If detectors contain radioactivematerial, then the installer may haveresponsibilities under legislation (seeappendix E).”

“If detectors contain radioactivematerial, then the installer may haveresponsibilities under radiationOrdinance Cap 303. License will berequired if the total radioactivity of thedetectors exceeds a certain limit asdetermined by the Hong Kong RadiationBoard.”

To suit local statutoryrequirements.


- “An inspection of the installation shallbe carried out in accordance with BSClause 26.2, 26.3 and 26.4.”

“An inspection and HKFSD’sacceptance test of the installation shallbe carried out in accordance with BSClause 26.2, 26.3, 26.4 and 26.6.”

To incorporate the statutoryrequirements in the modified BSClause 26.6 for HKFSD’sacceptance test.

2.57 - Clause 26.3(Page 40)

“should be in accordance with the IEEWiring Regulations.”

“should be in accordance with theEECoP.”


2.58 - Clause 26.4(Page 40)

“should be tested to ensure compliancewith the IEE Wiring Regulations.”

“should be tested to ensure compliancewith the EECoP.”




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2.59 - Clause 26.6(Page 40)

“26.6 CertificationThe installer should certify that theinstallation complies with therecommendations of this Part of BS5839 or, if deviations have been agreed(see 4.3), a statement of these deviationsshould be given by the installer (seeappendix B).”

“26.6 Acceptance Test and CertificationThe installer should certify that theinstallation complies with therecommendations of this Part of BS5839 using HKFSD’s prescribed forms.Upon the completion and testing of allthe required fire service installations, theAuthorized Person and the registeredfire service installation contractor shallarrange with HKFSD for inspection andacceptance tests. Details shall be inaccordance with the procedures asstipulated in the FSCoP.”



` “The insurer shall be consulted withregard to extensions and alterations toexisting systems.”

“HKFSD shall be consulted with regardto extensions and alterations to existingsystems.”


2.61 - Clause 27Para. 2

(Page 41)

“Following completion of thealterations, inspection, testing,commissioning and certification shouldbe carried out as recommended inClause 26.”

“Following completion of thealterations, inspection, testing, andcommissioning, Forms FSI/314A, FS251 together with one set as-fitteddrawings should be submitted toHKFSD for comment, spot checkingand record. ”


“fault conditions should only beundertaken by competent personnel.”

“fault conditions should only beundertaken by a registered fire serviceinstallation contractor.”

2.62 - Clause 27Para. 3

(Page 41)“sensor locations to be altered bypersonnel authorized by the responsibleperson.”

“sensor locations to be altered by aregistered fire service installationcontractor.”




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- “A servicing schedule shall beimplemented and shall be agreed by theinsurer.”

“All installations shall be maintained,inspected and certified by a registeredfire service installation contractor inaccordance with the maintenancerequirements as stipulated in FSCoP orBS Clause 29 at least once in every 12months.”

To suit local practice or allowflexibility by adopting therequirements of Clause 29 as analternatives to the maintenancerequirements as stipulated in theFSCoP.

2.64 Clause 29(b)Para. 2

(Page 5)

- “DISCONNECTIONS OR FAILURESOF AN INSTALLATION OR PARTSOF AN INSTALLATION LIKELY TOLEAVE AREAS UNPROTECTEDFOR 12 HOURS OR MORE SHALLBE MADE KNOWN TO THEINSURERS IMMEDIATELY”

“DISCONNECTIONS OR FAILURESOF AN INSTALLATION OR PARTSOF AN INSTALLATION LIKELY TOLEAVE AREAS UNPROTECTEDOVERNIGHT OR OVER 24 HOURSSHALL BE MADE KNOWN TOHKFSD IN ACCORDANCE TO THEREQUIREMENTS AS STIPULATEDIN FSD CIRCULAR LETTER NOS.1/99 AND 4/99.”

To incorporate the requirementsof FSD Circular Letter Nos. 1/99and 4/99.


(Page 43)

“Normally an agreement should bemade with a manufacturer, supplier orother competent contractor for regularservicing.”

“An agreement should be made with aregistered fire service installationcontractor for regular servicing.”


2.66 - Clause 29.2.8Para. 1

(Page 44)

“The responsible person should ensurethat every 5 years (or more frequently ifthe building electrical system is tested atshorter intervals) the installation shouldbe tested in accordance with the testingand inspection requirements of the IEEWiring Regulations.”

“The responsible person should ensurethat the installation should be tested infull accordance with the EECoP.”


List Three : Clauses to be provided with acceptable alternatives

List Three : Clauses to be provided with acceptable alternativesLPC Rules for Automatic Fire Detection and Alarm Installations for the Protection of Property


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3.1 Clause 6(e)(Page 3)

- “If devices are to be used in hazardousenvironments, then their design shall becertified by the British Approval Servicefor Electrical Equipment in Flammableatmospheres (BASEEFA).”

“If devices are to be used in hazardousenvironments, then their design shall becertified by the British Approval Servicefor Electrical Equipment in Flammableatmospheres (BASEEFA) or equivalentand approved by the HKFSD.”

Subject to approval by HKFSD,other equivalent standards couldbe adopted.


(Page 10)

“6.8 Compliance with British StandardsIn general, all components used in thesystem should comply with relevantBritish Standards,”

“6.8 Compliance with British Standardsor Other StandardsIn general, all components used in thesystem should comply with relevantBritish Standards or other standardsacceptable to HKFSD,”

To allow more flexibility byadopting other standards inaddition to the quoted BSstandards.


(Page 10)

“Where there is no relevant BritishStandard, non-standard componentsmay be used,”

“Where there is no relevant BritishStandard or other acceptable standards,subject to the agreement with HKFSD,non-standard components may be used,”


3.4 - Clause 6.9Para. 1(c)(Page 10)

“The decision algorithm used within thecontrol system should be such that thesensitivity of the system cannot falloutside that specified in the relevantPart of BS 5839, BS 5445 or BS 5446,except in time related systems (see14.6).”

“The decision algorithm used within thecontrol system should be such that thesensitivity of the system cannot falloutside that specified in the relevantPart of BS 5839, BS 5445 or BS 5446 orother standards acceptable to HKFSD,except in time related systems (see14.6).”



(Page 13)

“, and hence a minimum of twosounders should be provided even if therecommended sound level could beachieved with a single sounder.”

May not be applied Not mandatory requirement toprovide standby alarm sounders.


(Page 17)

“Manual call points should comply withBS 5839: Part 2.”

“Manual call points should comply withBS 5839: Part 2 or other standardsacceptable to HKFSD.”




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“Point heat detectors should complywith BS 5445: Part 5,”

“Point heat detectors should complywith BS 5445: Part 5 or other standardsacceptable to HKFSD,”


(Page 18)“where heat detectors complying withBS 5445: Part 8 should be used.”

“where heat detectors complying withBS 5445: Part 8 or other standardsacceptable to HKFSD should be used.”


“Point smoke detectors should complywith BS 5445: Part 7”

“Point smoke detectors should complywith BS 5445: Part 7 or other standardsacceptable to HKFSD”


(Page 18)“Optical beam smoke detectors shouldcomply with BS 5839: Part 5.”

“Optical beam smoke detectors shouldcomply with BS 5839: Part 5 or otherstandards acceptable to HKFSD.”


3.9 - Clause 11.5.2Para. 2

(Page 19)

“heat detectors complying with BS5445: Part 8 should be used.”

“heat detectors complying with BS5445: Part 8 or other standardsacceptable to HKFSD should be used.”


“Heat detectorsBS 5445: Part 5”

“Heat detectorsBS 5445: Part 5 or other standardsacceptable to HKFSD”

“High temperature heat detectorsBS 5445: Part 8”

“High temperature heat detectorsBS 5445: Part 8 or other standardsacceptable to HKFSD”

3.10 - Table 1(Page 21)

“Optical beam smoke detectorsBS 5839: Part 5”

“Optical beam smoke detectorsBS 5839: Part 5 or other standardsacceptable to HKFSD”


3.11 - Clause 12.3.2(Page 23)

“In such cases a heat detector complyingwith BS 5445: Part 8 should be used.”

“In such cases a heat detector complyingwith BS 5445: Part 8 or other standardsacceptable to HKFSD should be used.”




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3.12 - Clause 13.3.2(Page 24)

“These should comply with BS 5839:Part 5, BS 5445: Part 7”

“These should comply with BS 5839:Part 5, BS 5445: Part 7 or otherstandards acceptable to HKFSD”


3.13 - Clause 13.3.3(Page 24)

“These should comply with BS 5445:Part 5 or, in special cases, BS 5445: Part8 (see 11.5.2).”

“These should comply with BS 5445:Part 5 or, in special cases, BS 5445: Part8 or other standards acceptable toHKFSD (see 11.5.2).”


3.14 - Clause 15.2.1(Page 28)

“Control and indicating equipment forautomatic fire alarm systems shouldcomply with BS 5839: Part 4*.”

“Control and indicating equipment forautomatic fire alarm systems shouldcomply with BS 5839: Part 4* or otherstandards acceptable to HKFSD.”


3.15 - Clause 15.2.2(Page 28)

“Control and indicating equipment formanual systems should comply with BS5839: Part 4*.”

“Control and indicating equipment formanual systems should comply with BS5839: Part 4* or other standardsacceptable to HKFSD.”


3.16 - Clause 17.3New Para.(Page 33)

- Add the following Para. directly belowPara. 1, item (k) :

“Subject to the assessment andacceptance of the HKFSD, cablescomplying with other internationalstandards recommended by themanufacturer could be used.”

To allow more flexibility byadopting other internationalstandards in addition to thequoted BS standards.

3.17 - Clause 26.2(Page 40)

“that the methods, materials andcomponents used comply with this Partof BS 5839, and that the recorddrawings and operating instructions (see26.1) have been supplied.”

“that the methods, materials andcomponents used comply with this Partof BS 5839 or other standardsacceptable to HKFSD, and that therecord drawings and operatinginstructions (see 26.1) have beensupplied.”




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(Page 43)

“the agreement should preferablyinclude a requirement that an engineershould be on call at all times,”

“the agreement should preferablyinclude a requirement that an appointedperson should be on call at all times,”

To allow more flexibility.

List Four : Clauses to be taken as reference only

List Four : Clauses to be taken as reference onlyLPC Rules for Automatic Fire Detection and Alarm Installations for the Protection of Property


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4.1 ForwardPara. 1, 2, 3 and 4

(Page 1)

- “These Rules enable Insurers to apply their own special requirements along withthose of the British Standard ……………… with the appropriate clause numbertogether with a suffix letter so as not to be confused with the text of the BritishStandard.”

These Paras. are not part of thecontents of the LPC and BSStandards.


- “All parts of premises shall be protected. In general, installed systems shall betype P1 systems (installed throughout the protected building) in accordance withthe standard. However, at the discretion of the insurer, protection may be relaxedin areas fully protected by an automatic sprinkler system installed in accordancewith LPC Rules for automatic sprinkler installations. Such protection would be aType P2 system (installed only in defined parts of the protected building).”

Exact requirements have beenstipulated in the FSCoP.


- “The installation shall also be classified in accordance with the anticipatedattendance time of the fire Brigade*:

Class A – 5 minutes or lessClass B – 10 minutes or lessClass C – 15 minutes or less

…………………………………. , may be acceptable at the discretion of theinsurer.”

The present fire servicesrequirements have no suchclassification.


- “If the Fire Brigade attendance time is much longer than 15 minutes, then, inmany cases, a fire detection installation as a sole automatic fire protectionmeasure may be inappropriate. In such cases, automatic sprinkler, gaseous orother forms of extinguishing systems may be required. Acceptance of sucharrangements would be at the discretion of the insurer.”

The FSCoP has no suchmandatory requirements.


- “In the case of multiple occupancy premises, the responsibility for the buildingand the fire protection system(s) shall be identified (see BS Clause 2.13 and28.1). Any restrictions on coverage shall be pointed out to the insurer at an earlystage.”

The Fire Services Ordinance hasalready identified theresponsibility of the Owner /Incorporated Owner.

4.6 - Clause 3.1(Page 3)

“Fire alarm systems may be installed in buildings in order to satisfy severaldifferent needs. They may be ……………. , the number of sounders used willhave to be sufficient to give warning throughout the building.”

The present fire servicesrequirements have no suchclassification of type P1, P2, L1,L2, L3 and M systems.



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“The longest delay in detection of fire is likely to occur when no person is presentto detect the fire either at ignition or ……… , having continuous supervision andhaving good structural fire separation from the remainder of the building. Such apartial cover system is a type P2 system.”

The present fire servicesrequirements have no suchclassification of type P system.


“In some buildings the hazard to life from fire may be considered so small that nofire alarm is needed. ……………. of a type M system depends critically on thepresence of people to detect the fire, and on the training they are given in theprocedures to be followed if a fire occurs.”

The present fire servicesrequirements have no suchclassification of type L and Msystems.


“In large private dwellings, for example a country mansion, the protection willusually need to be of types L and/or P, ……… , particular where some parts suchas wiring might be concealed once the system is installed.”



“Buildings in multiple occupation may be buildings occupied by more than onecommercial undertaking, ……………… Cooperation and liaison betweenoccupants will then be needed.”



“Because of wide range of systems covered by the recommendations of this Partof BS 5839, it should be ………… , the type or types of protection required ineach part of the building should be identifiable from the specification.”

Each designer shall beresponsible for drafting his ownspecification for meeting therequirements as stipulated in theFSCoP.

4.12 - Clause 4.1 – 4.4(Page 5)

“4.1 GeneralThe system requirements, including those imposed by the configuration andusage of the premises, ………………. , since the interactions with otheroccupancies may significantly affect the design of the system.”

Not mandatory requirements.


- “Planning schedules shall be in accordance with BS Clause No. 5.” Not mandatory requirements.

4.14 - Clause 5(Page 6)

“A typical list of events to be taken into consideration in preparing a planningschedule is as follows, ……………… Such operation is a matter for agreementbetween the interested parties (see 26.7).”



- “In order to determine the most appropriate and effective system for the givenconditions, a risk assessment of the premises to be protected shall be carried out.The insurer and other interested parties shall be consulted at this stage………….• the attendance time of the fire brigade.”




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- “The results of the assessment will determine the most appropriate type of systemand extent of installation. For example: (i)……(ii)……(iii)…… … and thatautomatic supression should also be used.”



(Page 7)

“In some premises the probable rate of spread of fire may be so high that,……………... or packaging are stacked to a height exceeding 5 m.”



(Page 7)

“In premises in which normally active occupants can be expected to react to anemergency in a rational manner, ……………. provide an acceptable level ofprotection, a type L3 system may suffice.”



(Page 7)

“In residential premises, where a greater than normal time is required to evacuatethe building, ……………... A type L1 or L2 system should achieve the requiredlevel of protection.”


4.20 - Clause 6.6.1Para. 5

(Page 8)

“Even where the wiring of a system is monitored, ……….. , but the call pointused should be one remote from the control equipment so that all the wiring of thecircuit is tested.NOTE, In some systems the connections to call points are such that operation of a callpoint will not fully test the cables feeding detectors. ”

This requirement is considered anadditional requirement to thecurrent practice and is not amandatory requirement.

4.21 Clause 6.6.2Para. 3

(Page 8)

“During the design stage, consideration should be given to the possibility ofmalicious removal of detectors. … ….., detectors of a type that can be removedonly by the use of a special tool should be used.NOTE. A special tool in this context is a tool not likely to be carried by a member of thegeneral public. ……… since various articles can be used as ordinary screwdrivers.”

Using a special tool to removedetectors is not common localpractice and it would be difficultto implement this requirement.

4.22 - Clause 7.1(Page 11)

“In most buildings an alarm of fire may initiate a number of different activities,e.g. the provision of assistance, ….., it is thus important that in such systems theconcepts of ‘zones’ and ‘circuits’ be treated separately.”

This Clause dealt only withgeneral design consideration andit should provide flexibility todesigner.


(Page 12)

“Where a special fire risk is present within a larger protected area, and it isconsidered important to obtain rapid identification of a fire in that risk, the riskshould be considered as a separate zone.”



(Page 13)

“Sounders should be suitably distributed throughout the building having regard tothe attenuation of sound caused by walls, ……………… in order to preventexcessive sound levels in some areas.”




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(Page 17)

“It may be necessary to have travel distances to a call point much less than 30 mwhere ………………… may make the provision of additional manual call pointsnecessary.”


4.26 - Clause 12.1Para. 2, 3 and 4

(Page 20)

“Such a system. giving total coverage for property protection, is a type P1 system.…………. In order to prevent such spread, areas protected by a type P2 systemshould therefore be separated from unprotected areas by fire-resistingconstruction.”

The present fire servicesrequirements have no suchclassification of type P1 and P2systems.

4.27 - Clause 12.2.7(Page 21)

“, and the detector manufacturer may be able to supply a cover to prevent directentry of smoke from below without inhibiting normal entry from the side atceiling height.”

The application of this type ofcover is very limited.

4.28 - Clause 12.2.14(Page 22)

“A detector should be sited in any lantern-light used for ventilation or having aheight above the ceiling greater than 800 mm. ………….. , and should beprotected from direct sunlight.”


4.29 - Clause 12.2.15(Page 22)

“As the plume from a fire rises, it draws in air from round about it. ………… ,and even in the presence of stratification smoke detectors are likely to operatebefore heat detectors.”


4.30 - Clause 12.4.2Para. 3

(Page 23)

“Where the air from several extract points is combined into one duct …………..To avoid this further reduction it may be necessary to install a smoke detectornear each of the extract points.”

Installation requirements ofsmoke detector inside ventilationduct is regarded as ventilation/ airconditioning control systemwhich shall follow thoserequirements as stipulated inFSCoP.

4.31 - Clause 13.2(Page 24)

“13.2.1 General. In circumstances where a particularly early warning of fire isnecessary for the safety of life, automatic fire detectors should be installed.………………… 13.2.4 Total coverage. The third level of protection requires firedetection in all parts of the premises. Such a system is a type L1 system, andgives the maximum degree of improvement in safety that can be achieved by afire detection system.”

The provisions and requirementsof automatic fire detection systemhave been stipulated clearly inFSCoP and HKFSD has notclassified the level of protectionas type L1, L2 and L3 systems.

4.32 - Clause 13.5(Page 24)

“13.5.1 General. A type L3 system should be so designed that in any fire analarm is given ……………… , or by an optical beam detector with a verticalbeam.Detectors may be necessary in dormitories (see 13.6.3).”

The present fire servicesrequirements have no suchclassification of type L3 system.



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4.33 - Clause 13.6(Page 25)

“13.6.1 Escape routes. In general, the most vulnerable areas in any building arethe circulation areas, since once …………….. (c) the means of escape for personsin the duct.”


4.34 - Clause 13.7(Page 26)

“Where a total cover system is installed, detectors should be sited in all areas ofthe building ……………. , either heat or smoke detectors may be installed.”


4.35 - Clause 15.3.5(Page 29)

“If the system uses automatic detectors, then the area in which the control unit issited should be covered by the detection system.”


4.36 - Clause 16.3.2.2(Page 31)

“In some premises, in addition to supplies taken from the public mains,…….…….. unless a supply is connected from some other source (such as aportable generator brought in for the purpose).”

Not practical to implement.

4.37 - Clause 16.7.2(Page 32)

“If the system uses automatic detectors then the areas in which the equipment issited should be covered by the detection system.”


4.38 - Clause 18.1 – 18.4(Page 36)

“18.1 General18.1.1 Radio links. Some alarm systems are available in which some or all of theinterconnections between components are made by radio links. ………………….18.4.3 Cabling. Where cables are used in the system, for instance for powersupplies or to take signals to remote aerials, they should comply with therecommendations of clause 17.”

Radio-linked systems are notapplicable locally.


“21.1 VerificationArrangements may be specified in the contract for pre-delivery inspection of theequipment, ……………. other hazardous materials should be clearly labelled toemphasize the risk of damage during transportation or storage on site.”



“The work on site should consist of the following :……………………………..(d) inspection, initial testing, commissioning and certification.”

All the sequences and scope ofworks should be determined bythe designer, consultant orcontractors.


(Page 40)

“The installer should supply the user with a log book and a certificate ofinstallation and commissioning (see 28.2.2 and appendices B and D).”




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4.42 - Clause 26.5Para. 1(d)()

“any radio links have adequate signal strength (see 18.4);” Radio-linked systems are notapplicable locally.

4.43 - Clause 26.7(Page 41)

“26.7.1 Normal handover. When commissioning and certification are complete,the system should be formally handed over to the user. …………….. The systemlog book (see 28.2.2) should be properly kept from the date on which the systemis put into operation.”

All the handover requirements,procedures and arrangements arenot mandatory requirements andshould be separately arrangedamong the designer, installer,owner and occupier.

4.44 - Clause 26.8(Page 41)

“In large or complex systems it may be desirable that an operational audit is made…………….. , the logging of events and the efficiency of maintenance.”



- “The user shall be made aware of his responsibilities, as indicated in BS Clause2.13 and BS Clause 28.”



- “The log book described in BS Clause 28.2.2, shall be available for inspection bythe insurers.”


4.47 - Clause 28.1 – 28.4(Page 42)

“28.1 Supervision28.1.1 Responsible person. The owner or other person having control of thepremises should appoint a responsible person to supervise the system.…………..………. After reinstatement, an operation check of the system shouldbe made by a competent person.”



- “In addition to the above, the installer shall specify any special maintenanceprocedures necessary ……………... The insurer shall be informed of anyproblems found as a result of maintenance.”


4.49 Appendix A - “APPENDIX AEXAMPLE OF A COMPLETION CERTIFICATE FOR AUTOMATIC FIREDETECTION AND ALARM INSTALLATIONS…………………………………………………………………..Note : It is the responsibility of the insured to notify the Insurers immediately of anydisconnections or failure likely to leave the installation or part of the installationunprotected for 12 hours or more.”

This form is not a statutoryprescribed form.



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4.50 - Appendix A(Page 47)

“A.1 GeneralThere are several methods by which alarms of fire can be transmittedautomatically …………….. , since at busy periods there may be considerabledelays in answering it.”


4.51 - Appendix B(Page 48)

“Appendix B. Model certificate of installation and commissioning of a fire alarmsystem ………………………………………………The system documentation is situated ”


4.52 - Appendix C(Page 49)

“Appendix C. Model certificate of testing of a fire alarm system………………………………………………………………For and on behalf of (user or service organization) ”

This form is additional to thestatutory required prescribedform e.g. FSI 251 and its contentcan be agreed between the userand the registered fire serviceinstallation contractor.

4.53 - Appendix D(Page 50)

“Appendix D. Model log book for fire alarm systemsD.1 GeneralThe data to be recorded in the log book falls into the following ……………..D.3 Model log book …………………….Expendable component replacement due (list): ”

The requirements, format, layoutand content of this log book canbe agreed between the user andthe registered fire serviceinstallation contractor.

4.54 - Appendix F(Page 52)

“F.1 GeneralAlthough this Part of BS 5839 does not cover fire alarm systems integrated withsystems for other purposes, …………………………F.16 IsolationThis fire alarm system should not be adversely affected by provisions made forthe isolation of other parts of the system.”


4.55 - Appendix G(Page 53)

“G.1 GeneralThis appendix covers the functional recommendations for single zone controlequipment for small manual systems; ……………… Equipment not meeting allthe recommendations of G.2 to G.10 should not be marked with any reference toBS 5839 : Part 1.”




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4.56 - Appendix H(Page 55)

“This appendix consists of the text of booklet FB2 ‘Smoke Alarms in the Home’,1988, …………………There is also a companion booklet Fire Extinguishers forthe Home available.”


4.57 - Appendix J(Page 61)

“J.1 GeneralMost of the recommendations of this Part of BS 5839 are relevant to all types ofsystem. ………………. ………………………….(2) audible and visual alarms : see 9.1.”


4.58 - Appendix K(Page 61)

“K.1 Staged alarms and phased evacuationIn the past, the terms ‘staged alarms’ and ‘phased evacuation’(particularly ‘two-stage alarm’ and ‘two-phase evacuation’) ……………………….. might beacceptable in return for a reduction in the inconvenience due to an unduly highfrequency of false alarms (see 14.6).”


AnnexTable 2 : Spacing and siting of detectors on honeycomb, waffle and similar ceilings

(for BS Clause 12.2.3)

Ceiling height tostructural slab, H

(to nearest whole metre)

Beam depth, D(to nearest whole metre)

Maximum distance between any point andthe nearest smoke (heat) detector

Detector locationif W ≦ 4D

Detector locationif W > 4D

≦ 6 < 10% H As per flat ceilings Underside of beams On structural slab

> 6 < 10% Hand ≦ 600mm

As per flat ceilings Underside of beams On structural slab

> 6 < 10% Hand > 600mm

As per flat ceilings Underside of beams* On structural slab

3 > 10% H 4.5m (3m) Underside of beams On structural slab4 > 10% H 5.5m (4m) Underside of beams On structural slab5 > 10% H 6m (4.5m) Underside of beams On structural slab

≧ 6 > 10% H 6.5m (5m) Underside of beams On structural slab

W = Width of cellD = Depth of beams that form each cell

* Since mounting detectors at a depth of more than 600mm below the highest point in the protected spaces does not comply with the requirements as stated inPara. 1 of BS Clause 12.2.3, protection in these circumstances may need careful consideration to determine the most suitable location and spacing ofdetectors.

fire services department 牌 照 及 審 批 總 區 · pdf file · 2012-12-28page...

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fire services department 牌照及審批總區 · pdf file · 2012-12-28page...