Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 15713 (2006): Road vehicles - Compressed natural gas(CNG) fuel system components - Pressure regulator [TED 26:Automotive vehicles on NCES]

IS 15713:2006

Wi’i+hm

“~ -q – f;q&f ~,n

. . * * (-)

@wFJllaihem-m AT@rm

Indian Standard

ROAD VEHICLES — COMPRESSED NATURAL GAS(CNG) FUEL SYSTEM COMPONENTS — PRESSURE

REGULATOR

ICS 43.060.040

0 BIS 2006

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

December 2006 Price Group 3

Reaffirmed - 2011

Automotive Vehicles Running on Non-conventional Energy Sources Sectional Committee, TED 26

FOREWORD

This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the AutomotiveVehicles Running on Non-conventional Energy Sources Sectional Committee had been approved by the TransportEngineering Division Council.

In the formulation of this standard considerable assistance has been derived from the following standards issuedby the Automotive Research Association of India and the International Organization for Standardization respectively:

AIS 024 (Amd 4 to version 3) — Safety and procedural requirements for type approval of CNG operatedvehicles

AIS-028 ( Version 3) — Code of practice for use of CNG fuel in internal combustion engine vehicles

1S0 15500-9:2001 — Road vehicles –- Compressed natural gas (CNG) fuel system components — Part 9:Pressure regulator

This standard is one of the series of Indian Standards published on CNG onboard fuel system components. Otherstandards in this series are:

1SNo.

15710:2006

15711:2006

15712:2006

15714:2006

15715:2006

15716:2006

15717:2006

15718:2006

15719:2006

15720:2006

15721:2006

15722:2006

15723:2006

Title

Road vehicles — Compressed natural gas (CNG) fuel system components — Generalrequirements and definitions

Road vehicles — Compressed natural gas (CNG) fuel system components — Performanceand general test methods

Road vehicles — Compressed natural gas (CNG) fuel system components — Automaticvalve (solenoid valve)

Road vehicles — Compressed natural gas (CNG) fuel system components — Gas/air mixer

Road vehicles — Compressed natural gas (CNG) fuel system components — Conduit(ventilation hose)

Road vehicles — Colnpressed natural gas (CNG) fuel system components — CNG highpressure fuel line (rigid) with end connections [having pressure exceeding 2.15 MPa(21.5 bar)]

Road vehicles — Compressed natural gas (CNG) fiel system components — Petrol solenoidvalve (automatic/manual)

Road vehicles — Compressed natural gas (CNG) fuel system components — CNG highpressure fuel line (flexible hose) with end connections [having service pressure exceeding2.15 MPa (21.5 bar)]

Road vehicles — Compressed natural gas (CNG) fuel system components — Electricalwiring kit

Road vehicles — Compressed natural gas (CNG) fhel system components — Compartments/sub-compartments

Road vehicles — Compressed natural gas (CNG) — Fire retardant material for seat,upholstery, roof and side lining

Road vehicles –- Compressed natural gas (CNG) fuel system components — CNG lowpressure flexible fuel line with end connections [CNG fhel line having pressure not exceeding2.15 MPa (21.5 bar)]

Road vehicles — Compressed natural gas (CNG) fuel system components’ — Currentlimiting devices

(Continued on third cover)

AMENDMENT NO. 1 JUNE 2012 TO

IS 15713 : 2006 ROAD VEHICLES — COMPRESSED NATURAL GAS (CNG) FUEL SYSTEM COMPONENTS —

PRESSURE REGULATOR

Page clause 4.2 first line after ( 1, , ) — Insert the words ‘if provided’ ‘relief valve’.

Page Table ( 2, 1) — Add the following Note at the end of the Table 1: ‘NOTE — The tests electrical over voltages, insulation resistance, and minimum opening voltage are applicable only, if the regulator has integrated solenoid valve.’

Page Table ( 3, 2) — Substitute the following for the existing table:

Table 2 Test Temperatures and Pressures Clause ( 5.3)

Temperature Stage (Factor × Working Pressure) oC

Test Pressure

First Test Second Test

(1) (2) (3) (4)

– 40 or –20 Inlet to 1 0.75 0.025 20 Inlet to 1 0.025 120 Inlet to 1 0.05

1.5

– 40 or – 20 0.75 0.025 20 0.025 120 0.05

Chambers downstream of Inlet

to 1 1.5

Page clause ( 3, 6.1) — Substitute the following for the existing:

‘6.1 Each Pressure regulator shall be legibly and indelibly marked with the following:

a) Manufacturer’s name, trade-mark or symbol; b) Part No. or unique identification mark;

1

(TED 26)

Amend No. 1 IS 15713 : 2006

c) Working pressure and temperature range or service pressure; and d) Date of manufacture or batch number.’

[Page 3, clause 7(j)] — Substitute the following for the existing:

‘Drawings with relevant dimensions and material.’

Reprography Unit, BIS, New Delhi, India

2

IS 15713:2006

Indian Standard

ROAD VEHICLES — COMPRESSED NATURAL GAS(CNG) FUEL SYSTEM COMPONENTS — PRESSURE

REGULATOR

1 SCOPE

1.1 This standard specifies definitions, test methodsand requirements of pressure regulator of CNG onboardfuel system component intended for use on motorvehicles defined in IS 14272 (Part 1), two wheelersand construction equipment vehicles (CEV).

1.1.1 This standard is applicable to CNG fiel systemcomponents intended to use on vehicles usingcompressed natural gas in accordance with IS 15320(mono-fiel or bi-fiel applications).

1,1.2 It is not applicable to the following:

a)

b)

c)

d)

Liquefied natural gas (LNG) fuel systemcomponents located upstream of, andincluding, the vaporizer;

Fuel containers;

Stationary gas engines; and

CNG fuel systems components for thepropulsion of marine craft

1.1.3 This standard is based upon a service pressure forcompressed natural gas as a fiel at 20 MPa (200 bar)settled at 15“C. Other service pressures could beaccommodated by adjusting the pressure by theappropriate factor (ratio). For example, a 25 MPa(250 bar) service pressure system will require pressuresto be multiplied by 1.25.All references to pressure are tobe considered gauge pressures unless otherwise specified.

2 REFERENCES

The following standards contain provisions, whichthrough reference in this text, constitute provisions ofthis standard. At the time of publication the editionsindicated were valid. All standards are subject torevision and parties to agreements based on thisstandard are encouraged to investigate the possibilityof applying the most recent editions of the standardsindicated below:

1S No. Title

14272 Automotive vehicles — Types —(Part 1): 1995 Terminology: Part 1 Three and four

wheelers

15320: 2003/ Natural gas — Designation of theISO 15403: quality of natural gas for use as a~ooo compressed fuel for vehicles

1

IS No.

15710:2006

15711:2006

l’itle

Road vehicles — Compressed naturalgas (CNG) fuel system components— General requirements anddefinitions

Road vehicles — Compressed naturalgas (CNG) tlel system components— Performance and general testmethods

3 DEFINITIONS

For the purpose of this standard the following definitionin addition to those given in IS 15710 shall apply.

3.1 Lock-up Pressure — Stabilized outlet pressureof the regulator at zero flow.

4 CONSTRUCTION AND ASSEMBLY

4.1 The pressure regulator shall comply with theapplicable provisions of IS 15710 and IS 15711, andwith the tests specified in 5.

4.2 A pressure relief valve shall be of a type that resetsafter relieving it is intended that downstream componentsbe protected from exposure to cylinder pressure.

4.3 A pressure relief valve may be integral to thepressure regulator, or not.

4.4 The pressure regulator shall have a factory-setmaximum outlet pressure. The maximum outletpressure rating and the inlet pressure rating shall bemarked on the regulator.

5 TESTS

5.1 Applicability

The tests required to be carried out are indicated inTable 1.

5.2 Hydrostatic Strength

5.2.1 Test the pressure regulator according to theprocedure for testing hydrostatic strength specified inIs 15711.

5.2.2 Test the inlet of the first stage of the pressureregulator using a pressure of four times the workingpressure.

1S 15713:2006

Table 1 Tests Applicable

(Clause 5.1 )

Test Applicable Test Procedure as Required Specific Test Requirementsby IS 15711 of This Standard

(1) (2) (3) (4)

Hydrostatic strengthLeakageExcess torque resistanceBending momentContinued operationCorrosion resistanceOxygen ageingElectrical over-voltagesNon-metallic synthetic immersionVibration resistanceBrass material compatibilityInsulation resistanceMinimum opening voltagePressure impulseWater jacket freezing

xxxxxxxxxxxxxxx

xxxxxxxxxxl)

x——.—

X (see 5.2)X (see 5.3)

——

X (see 5.4)——

—X (see 5.5)X (see 5.6)X (see 5.7)X (see 5.8)

lJThevibration resistance test inlS 15711 is not applicable ifthe pressure regulatorisenginemounted.

5.2.3 Test the inlet or inlets of the downstream stage orstages at four times the working pressure.

5.2.4 Test the outlet chamber, port and all outlet fittingsat four times the working pressure, or 0.4 MPa (4 bar),whichever is the greater.

5.3 Leakage

Test the pressure regulator at the temperatures andpressures given in Table 2.

5.4 Continued Operation

The regulator shall be able to withstand 50000 cycleswithout any failure when tested according to thefollowing procedure. Where the stages of pressureregulation are separate, the service pressure in (a) to (f)is considered to be the working pressure of the upstreamstage:

a) Recycle the regulator for 95 percent of thetotal number of cycles at room temperatureand at the service pressure. Each cycle shallconsist of flow until stable outlet pressure hasbeen obtained, after which the gas flow shallbe shut-off by a downstream valve within 1 s,until the downstream lock-up pressure hasstabilized. Stabilized outlet pressures aredefined as set pressure+ 15 percent for at least5 s. The regulator shall comply with 5.3 atroom temperature at intervals of 20 percent,40 percent, 60 percent, 80 percent and100 percent of room temperature cycles.

b) Cycle the inlet pressure of the regulator for1 percent of the totai number of cycles at roomtemperature from 100 percent to 50 percent

c)

d)

e)

o

!3)

of the service pressure, The duration of eachcycle shall be not less than 10s. The regulatorshall comply with 5.3 at room temperature atthe completion of this test.

Repeat the cycling procedure of(a) at 120°Cat the service pressure for 1percent of the totalnumber of cycles.

Repeat the cycling procedure of(b) at 120 “Cat the service pressure for 1percent of the totalnumber of cycles. The regulator shall complywith 5.3 at 120°C at the completion of thistest.

Repeat the cycling procedure of(a) at –20°Cand 50 percent of service pressure for1 percent of the total number of cycles.

Repeat the cycling procedure of(b) at –20°Cand 50 percent of service pressure for1 percent of the total number of cycles. Theregulator shall comply with 5.3 at –20”C atthe completion of this test.

At the completion of the cycles, the lock-uppressure downstream of the regulator shall notexceed the lock-up pressure.

5.5 Insulation Resistance

This test is designed to check for a potential failure ofthe insulation between the two-pin coil assembly andthe pressure regulator casing.

Apply 1000 V dc between one of the connector pinsand the housing of the pressure regulator for at least2s. The minimum allowable resistance shall be240 k!il

2

IS 15713:2006

Table2 Test Temperatures and Pressures

(Clause 5.3)

s} Temperature Percentage Inlet Test PressureNo. “c MPa [bar]

&f %

First Test Second Test

(1) (2) (3) (4) (5)

i) -20 1 15 [150] 0.5 [5]

ii) 27

iii) 12011

0.5 [5]0.5[5]

30 [300]

iv) –20 2,3,... 0.75X working pressure 1

@ 27 2,3,... 1 1.5 X working pressure

vi) 120 2,3,... 1 1.5 X working pressure

5.6 Minimum Opening Voltage

The minimum opening voltage at room temperatureshall be<6Vfora 12 Vsystemand< 16 Vfora24Vsystem.

5.7 Pressure Impulse

a)

b)

Subject the pressure regulator with its firststage valve rendered filly open to a suddenapplication of its service pressure at its inlet.The pressure regulator shall retain or release thepressure without any permanent deformation.

Record the lock-up pressure of the regulator.

5.8 Water Jacket Freezing

a)

b)

Fill the regulator or water jacket, whichnormally contains an anti-tleeze solution, withwater to normal capacity and expose it at–20”C for 24 h. Attach 1m sections of coolanthose to the coolant inlet and outlet of theregulator or water jacket.

Following the ti-eezing conditioning, conductan external leakage test at room temperatureaccording to 5.3. .

A separate sample maybe used for this test.

6 MARKING

6.1 Each pressure regulator shall be permanentlymarked with:

a)

b)

c)

d)

e)

Manufactures name, trade-mark or symbol,

Part No. or unique identification mark,

Service pressure and temperature range,

Date of manufacture or batch number, and

IS number of this standard.

6.2 BIS Certification Marking

Each pressure regulator may also be marked with the131SStandard Mark.

6.2.1 The use of the Standard Mark is governed by theprovisions of the Bureau ofZndian Standards Act, 1986and the Rules and Regulations made thereunder. Thedetails of conditions under which the licence for theuse of the Standard Mark may be granted tomanufacturers or producers may be obtained from theBureau of Indian Standards.

7 TECHNICAL INFORMATION TO BE

SUBMITTED BY THE COMPONENTMANUFACTURER

Technical information to be submitted by thecomponent manufacturer for component type test (typeapproval) shall contain at least following information:

a)

b)

c)

d)

e)

f)

g)h)

j)

Name of the manufacturer,

Manufacturing plant address,

Part number,

Type No./Model No.,

Number of pressure reduction stages in theregulator,

Working pressure of each stage,

Rated voltage of the solenoid coil (if any),

Operating temperatures, and

Drawings: Detailed dimensional assemblydrawing in A3 size in duplicate shall containinformation like drawing No., Rev. No., partNos., bill of material (comprising part Nos.of individual items, grade for metallic parts,generic name and compound number for non-metallic parts used in the pressure regulator),rated torque of inlet and other threaded fittingsdetails of the marking on the component withproper authentication.

8 NUMBER OF SAMPLES FOR TESTING

Minimum 7 numbers of the CNG pressure regulatorassemblies shall be submitted to the test agency forcomplete type testing along with minimum 10 numbers

3

IS 15713:2006

each of the non-metallic parts used in the CNG pressureregulator assembly. Each non-metallic part shall besubmitted separately in the packets mentioning detai ISlike part name, part numbers and quantity.

9 TYPE TEST (TYPE APPROVAL)

For type approval CNG pressure regulator shall meetthe requirements as specified in this standard.

10 ACCEPTANCE TEST (CONFORMITY OFPRODUCTION)

For the purpose of acceptance test, CNG pressureregulators manufactured shall conform to following testrequirements as specified in relevant clauses of thisstandard (see Table 1):

a) Hydrostatic strength test,

b)

c)

d)

e)

0

g)

Leakage test,

Corrosion resistance test,

Non-metallic synthetic immersion test,

Oxygen ageing,

Brass material compatibility, and

Over voltage test.

11 CHANGES IN TECHNICAL SPECIFICATIONSOF A TYPE APPROVED COMPONENT ANDEXTENSION OF APPROVAL

Any modification in technical specification of alreadytype approved component shall require re-type test/extension of approval at the discretion of test agency,based on the justification provided by the componentmanufacturer and reviewed by the test agency, whichhas granted type approval.

ANNEX A

(F’orewor@

COMMITTEE COMPOSITION

Automotive Vehicles Running on Non-conventional Energy Sources Sectional Committee, TED 26

Organization Representative(s)

[n personal capacity (D-35, Hauz Khas, New Delhi 110016) SHIUB. BHANOT(Chairman)

Automotive Research Association of India, Pune SHIUM. K. CHOUDIIARISHRSA. B. KOMAWAR(Alternate)

Ashok Leyland Ltd, Chennai

Bajaj Auto Ltd, Pune

Batra Associates Limited, Faridabad

Bharat Heavy Electicals Ltd, Bangalore

Bharat Petroleum Corporation Ltd, Mumbai

Bombay Environmental Action Group, Mumbai

Central Institute of Road Transport, Pune

Central Pollution Control Board, Delhi

Centre for Science and Environment, New Delhi

Force Motors Ltd, Pune

GAIL (India) I.imited, New Delhi

SHIUNIRMALKUMARSHruG. VIsw.mAW (Alternate)

SHRITAPANBASUSHRIT. M. BALARAMAN(Alternate)

SW N. K. SAWHNEY

SHRIJ. B. D’SOUZASHWP. S. CHoPm (Alternate)

SHRIR. N. DASSHsuN. DAScWrA(~f~ernate)

SHSUDEBIGomw

SHRIG. K. SHARMASHRID. P. SASTE(Alternate)

SHRIT. VENUCOPALSHRIRAtESHDEBROY(Akemate)

SHRIMATIANUMITAROYSssmCsawG SHN (Alternate)

SHRIS. B. PETHESHRIS. V. VIDHWANS(Alternate)

SHRIS. P. SHARMASHRIRANVEERSINGH(Alternate)

IS 15713:2006

Organization

Gujarat Gas Company Limited, Surat

Representative(s)

SHIUM. I. VAKHARWALASHRJB. D. JOSHI(Akerrrute)

SHRiS. Y. RAORTV-ENGG(GENERAL)(Ahernale)

Hindustan Motors Ltd, Sagore

DR MUKESHSAXENASHRJA. K. Arms, (Ahernate)

SHPJP. S. BHARGAVASJSRJB. K. NAX+(Ahernate)

Indian Institute of Petroleum, Dehradun

Indraprastha Gss Ltd, New Delhi

SHRJR. S, PRABHUSHRJA. UDEYKMAN(Alternate)

Mahanagar Gas Ltd, Mumbai

Mahindra & Mahindra Ltd, Nasik SHRIZ. A. MUJAWARSHRJK. V. N. PRASAD(Alternate)

SHRISHBHIRAORAWALSHJUGAGANAGRAWAL(Afternate)

Minda Impco Ltd, New Delhi

Ministry of Non-conventional Energy Sources, New Delhi

Petroleum & Explosives Safety Organization, Nagpur

DMECTOR

SHIUA. N. BWWASSHJUC. R. SURENDRANATHAN(Alternate)

SHRIN. S. MURTHYSHJURAWV. DESAi(Alternate)

Reliance Industries Limited, Navi Mumbai

Reva Electric Car Co (Pvt) Ltd, Bangalore

Rutu Auto Gas Pvt Ltd, Ahmedabad

Sagas Autotech Pvt Ltd, Mysore

SHRICHETANMAJNI

SHRJRAJESHKOTHARI

SHRISANDEEPS. P.SJJRJSANJAYSHYAMANURP. (Alternate)

SHRIN. K. TiUVED[SHRJB. K. MAMN(Alternate)

Scooters India Ltd, Lucknow

Shri Shakti LPG Ltd, Hyderabad SHRIJAYAPRAKASHRAMAPPASHRJCHALAPATHYRAO(Alternate)

Society for Alternate Fuels Aftermarket Conversion, New Delhi SHPJSANIAYGAMBHIRSHJUR. P. KHURANA(Alternate)

Society of Indian Automobile Manufacturers, New Delhi SHRJK. K. GANDHIMs PAMELATncxu (Alternate)

Tata Motors Ltd, Pune DR KRJSHNAIYENGARSHRJP. K. BANERJEE(Alternate)

Transenergy Ltd, Chennai DR K. SRJDHARASHRJA. GOPALAKRJSHNAN(Alternate)

CAPTN. S. MOHANRAMTVS Suzuki Ltd, Hosur

Vanaz Engineers Ltd, Pune SHRIS. R. SARVATESHJUS. J. VBPUrE(Afternate)

Vehicle Research & Development Establishment, Ahmednagar SHRIK. KAMRAJSHRJK. S. JAIN(Alternate)

In personal capacity (D-606, Vashi Plaza, Sector 17, Vashi,Navi Muntbai 400705)

BIS Directorate General

SHRJALOKCHANDRAGUPTA

SHJUP. C. JOSHL,Scientist ‘E’ and Head (TED)[Representing Director General (Ex-o~cio)]

Member SecretarySNRI P. S. MUJRAL

Scientist ‘E’ (TED), BIS

5

This standard deviates from 1S0 15500-9:2001 with respect to following:

a) The hydrostatic strength test pressure is changed from 100 MPa to four times the working pressure

b) Considering Indian climate conditions the low temperature test of pressure regulator is changed to--20°C instead of-40°C

c) Testing atroomt emperature shall bedoneat27+5°C instead of20°C

The composition of the Committee responsible for the formulation of this standard is given in Annex A.

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,observed or calculated, expressing the result of test or analysis, shall be rounded off in accordance with IS 2:1960‘Rules for rounding off numerical values (revised’. The number of significant places retained in the rounded offvalue should be the same as that of the specified value in this standard.

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goodsand attending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edhion by referring to the latest issue of‘BIS Catalogue’ and ‘Standards : Monthly Additions’.

This Indian Standard has been developed from Doc: No. TED26(570).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDS

Headquarters :

Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002 Telegrams : ManaksansthaTelephones :2323013 I, 23233375,23239402 (Common to all offices)

Regional Offices : Telephone

Central :

Eastern :

Northern :

Southern :

Western :

Manak Bhavan, 9 Bahadur Shah Zafar Marg

{

23237617NEW DELHI 110002 23233841

1/14 C.I.T. Scheme VII M, V. I. P. Road, Kankurgachi

{

23378499,23378561KOLKATA 700054 23378626,23379120

SCO 335-336, Sector 34-A, CHANDIGARH 160022

{

26038432609285

C.I.T. Campus, IV Cross Road, CHENNAI 600113

{

22541216,2254144222542519,22542315

Manakalaya, E9 MIDC, Marol, Andheri (East) ~283292 95,28327858MUMBAI 400093 128327891,28327892

Branches : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD.GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR.NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPAT?4AM.

F’nntedat Pcabhat Offset Press, New Delhi-2