163629-70-001

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1 J:\163629-Tnuva Alon Tavor LP\80-Piping\89-Piping specs \ ר י ט ר פ מ -ומ חץ נ גז ל קו נרת צ \163629-70-

001. docx

Design of Low Pressure

Natural Gas Piping

TECHNICAL SPECIFICATION FORVALVES

Project No. 163629

Document No.

163629-70-0001

Prepared by Ludan Engineering Israel Ltd.

0 21.07.13 For approval Y.M A.N A.K

Rev. Date Description Prep. By Checked By App. By App. By

LUDAN CLIENT

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2 J:\163629-Tnuva Alon Tavor LP\80-Piping\89-Piping specs \ ר י ט ר פ מ -ומ חץ נ גז ל קו נרת צ \163629-70-001. docx

Revisions Description Sheet

Rev. Para. Revision description

HoldNo. Para. Description of Hold

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TABLE OF CONTENTS

SECTION TITLE

1. INTRODUCTION

1.1 UNITS OF MEASUREMENT

2. CODES, STANDARDS, REGULATIONS AND REFERENCES2.1 APPLICABLE SPECIFICATIONS AND STANDARDS

2.2 DATA SHEETS

2.3 ORDER OF PRECEDENCE

3. HEALTH, SAFETY AND ENVIRONMENTAL REQUIREMENTS

3.1 ENVIRONMENTAL CONDITIONS

3.2 HEALTH, SAFETY AND ENVIRONMENTAL REGULATIONS

4. GENERAL DESIGN REQUIREMENTS

4.1 OPERATING REQUIREMENTS 4.2 DESIGN LIFE

4.3 DESIGN REQUIREMENTS

5 TESTING AND INSPECTION

5.1 TESTING

6. REQUIREMNTS FOR VALVE STEM EXTENSION SSEMBLIES

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1. INTRODUCTION

This Specification defines the technical requirements for VALVES to be installed on

the low pressure Natural Gas for factories.

1.1 UNITS OF MEASUREMENT

In general, the International System (SI) units shall be used. However, exceptions

will be stated on datasheet.

2. CODES, STANDARDS, REGULATIONS AND REFERENCES

2.1 APPLICABLE SPECIFICATIONS AND STANDARDS

In conjunction with this Specification, the Codes, Standards, Regulations and

References listed below shall be applicable.

2.1.1 Industry Codes and Standards

Reference to any standard or code shall mean the latest edition of that standard or

code including addenda, supplements or revisions thereto, unless specified otherwise.

2

2

.

2

2.2 DATA SHEETS

See Doc. 13888-PR-DS-9999-0015 data sheet for 10” c.s valves

See Doc. 13888-PR-DS-9999-0016 data sheet for 2” c.s valves

SI 5664 PART 3 Natural Gas Distribution System

ASME B16.33 Small manually operated metallic gas valves, in gas distribution systems

ASME B16.34 Steel valves

ASME B16.38 Large manually operated metallic gas valves, in gas distribution systems

API 6D Pipeline valves

ISO 9001 Quality management system requirements

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2.3 ORDER OF PRECEDENCE

The order of precedence should be as follows:

1) Request for Quotation

2) Data sheets and drawings (if any)

3) This Specification

4) Project specifications

5) International and National codes and standards

6) Industry codes and standards referenced.

3. HEALTH, SAFETY AND ENVIRONMENTAL REQUIREMENTS

3.1 ENVIRONMENTAL CONDITIONS

The valves and accessories shall be capable of operation in industrial, humid and

corrosive atmosphere, in ambient temperature up to 33 °C as well as the solar radiation

temperature of +60 °C and down to -10° C (maximum extremes).

Relative humidity conditions range from 25% up to 100%

For above ground valve installations are painted according to manufacture.

For underground valve installations the coating shall be 2.9 mm minimum According to

manufacture.

• The valves are for natural gas services.

• The design pressure is 60 barg for H.P valve as mentioned in B.O.Q

• The design pressure is 16 barg for low pressure valve as mentioned in B.O.Q

• The valves are for above and underground installations.

Materials will be installed in various types of soil.Depth of installation is 1.20m underground as a minimum up to 2.5m with appropriate

stem extension and will be coated (for underground only)

3.2 HEALTH, SAFETY AND ENVIRONMENTAL REGULATIONS

The valves and/or accessories shall be designed to operate safely and satisfactorily at all

expected combinations of process, utilities, climates and environmental conditions

including those at start-up, shutdown, part load operation and emergency cases while

retaining the overall system security, reliability and availability.

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4. GENERAL DESIGN REQUIREMENTS

4.1 OPERATING REQUIREMENTS

All items and/or materials shall be suitable to operate at temperatures specified in

section 3.1.

4.2 DESIGN LIFE

The valves and/or accessories shall have a minimum service life of >25 years, under

the stated service conditions

4.3 DESIGN REQUIREMENTS

Strategic steel valves intended for isolation purposes on main pipe should be welded

full bore, ball, double block and bleed type equipped with vent pipe and also with 2

(two) sealant injection pipes. The sealing system shall be PMSS and double pistonaffect for 6" and above.

Valve above 4" shall be triunion valve.

Valves should be equipped with 250 mm pups on each edge of the valve. Pup to be

integral part of valve and to be assembled to valve before testing. Pup to be included

in testing certification. The pups shall be match to the valve body and be tested

with the valve. The wel of this joint shall be tested and recored and delivered with all

documents that relevant. Purge steel valves should be gate or plug valve type and to

be one edge butt welded and the second edge flanged. Purge valves to be 70% boreand equipped with 150 mm (6") pup on weld end edge of the valve. Pup to be

integral part of valve and to be assembled to valve before testing. Pup to be included

in testing certificates. Pup for all types of valves mentioned above should be made of

pipe segment which is compatible to the main pipe material at the valve location as

described in the specific data sheet which is attached to relevant MTO for the system

under review .the design shall guarantee that there will be no continuous gas

bleeding to the atmosphere. The valves shall be provided with static and dynamic

load from each unit, to supporting structure, for design purposes. The valves shall be

designed to facilitate ease inspection, cleaning, maintenance and operation.

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All valves shall be seat leakage in accordance with API 6D.

Steel valves shall be painted according to manufacturer's standard. This approved by

the company first.

For underground installation the coating shall be with 2.9 mm PUR according to

manufacturer's standards.

High pressure:

D.P 80 barg

Safety factors 2.5 (s.a=4)

Low pressure:

D.P 16 barg

Safety factors 2.5 (s.a=4)

5. TESTING AND INSPECTION

5.1 TESTING

Valves up to 4" shall be delivered with certificate EN 10204 3.1.

Valves 6" and above shall certified EN 10204 3.2 (on manufacture's expanse).

All tests shall be performed in accordance with written test procedures that shall be

submitted for approval prior to testing (acc. API 6d)

All tests shall be performed in accordance with written test procedures that shall be

submitted for approval prior to testing.

All items and materials shall be tested in accordance with the applicable

Specifications, Inspection Data Sheets and code requirements as appropriate.

The equipment shall be inspected and witnessed tested at the manufacturer’s

workshop.

All parts of the valves shall be inspected, tested and certified, fully in accordance

with the referenced codes and standards.

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No witnessed testing shall take place until all the latest relevant drawings, certificates

and specifications have been issued and approved.

All instruments shall be calibrated in accordance with the manufacturer’s

recommendation. Copies of the calibration certificates shall be provided with the test

results. Only competent personnel shall operate test equipment.

All test results shall be written at the time of test in blue ink and signed by the tester

and the witness.

Alterations or corrections shall be made by crossing out not by over-writing the

previous data. No test results shall be corrected with correction fluids or similar

correction media.

The inspection and test documentation shall indicate all of the test instrument details

including the Manufacturer, type, date of calibration, scale used and the recorded

results/tolerances.

6. REQUIREMNTS FOR VALVE STEM EXTENSION ASSEMBLIES

6.1 STEM EXTENTION 6.1.1 Where provision is made for mounting a stem extension assembly, the design

shall be such that the complete assembly will form a rigid unit giving a

positive drive under all conditions with no possibility of free movement

between the valve body, stem extension or its operator. 6.1.2 The inner drive stem extension shall be so designed as to ensure that full

engagement

with the valve stem is maintained in all attitudes of the valve and stem

extension

assembly. 6.1.3 Where a hollow valve stem extension (i.e. inner drive stem extension) is used,

provision shall be made to equalize the pressure between the bore of the stem

extension and the annulus. To prevent ingress of water, the necessary vent hole

shall be drilled above the level of any vent in the outer tube.

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6.1.4 The outer housing shall be fitted with a vent to atmosphere incorporating a

relief valve set at 0.5 bar, to prevent pressure build up.

6.1.5 The length of the stem extension (i.e. the dimensions, either A or B as shown

in Figure 1 below) shall be specified in the data sheet.

Figure 1

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7. REQUIREMENTS FOR VALVE ACTUATOR

7.1 ACTUATOR

7.2 Where mentioned in B.O.Q a requirement for actuator this specification cover

the design, fabrication, assembly, testing and shipment of electric actuator

with integrated reversing starter and local control for all ball valves in use.

• The electric actuator with reversing starter shall be integrated part of the ballvalve

7.3 Compatibility with Valve

The manufacture shall be responsible for the correct dimensioning and sizing

of the actuator and compliance with requirement of this specification and shall

come to an agreement with the valve contractor, for fitness of the actuator and

the gearing of the valve.

7.4 Manufacturer shall supply design drawings to the manufacturer of the valve

and submit to the client for approval.

8. THECNICAL REQUIREMENT

8.1 All electric actuator supplied shall be designed for long life and reliability.

8.2 Shall have sufficient torque to open the closed valve ar a pressure across the

valve equal to 125% of maximum allowable working pressure for the valve.

8.3 Each actuator shall be self-retaining type and have to specify the shortest

period or the time required for opening or closing valve.

8.4 Shall be designed for local control and connection to the remote control

system, all supplied actuators to be in accordance with all explosion proofing

requirements.

8.5 Suitable for use on nominal 380 volt, 3 phase 50 HZ power supply

8.6 Supplied with a removable hand while for manual operation and disconnect

automatically if actuator is operated electrically.

8.7 Motor shall be class "F" insulated with time rating of at least 15 minutes or

twice the valve stroking time, single phasing protection.

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8.8 Actuator gearing shall be totally enclosed in an oil filled gearbox metal

construction, local indicator to show value position (closed/open)

8.9 shall be fed from two of the incoming three phases, 220 V AC, local control

supply and 24V DC for remote, supplied with start-up kit.

8.10 Test certification

Each one to have performance testing and test certificates free of charge Testedon site including valve under operating condition.

8.11 The manufacturer shall furnish five copies of each test report to client at time

of shipment.

163629-70-001

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