document: iso/tc 58/sc 3 n 1435 - home - ngv italy

Document: ISO/TC 58/SC 3 N 1435

Date: 10th November 2011 Secretariat of ISO/TC 58/SC 3 Gas cylinders – Cylinder design Direct tel: +44 (0)20 8996 7146 Direct fax: +44 (0)20 8996 7799 E-mail: [email protected] Web: www.bsigroup.com

Draft report of the meeting of ISO/TC 58/SC 3 held from 18th to 20th October 2011 in Lisbon, Portugal

1. Opening of the meeting The Secretary opened the meeting by welcoming all those present. He informed the meeting that unfortunately the Chairman Dr Hepples could not attend. The Secretary then proposed that for the 2011 meeting Dr Jubb should chair the meeting. The proposal was unanimously approved.

Resolution No.001/2011 A roll call of delegates was taken. Delegations from the following countries were present: Austria Canada China Czech Republic France Germany Italy Japan Norway Portugal South Africa UK USA The following liaisons were present: European Industrial Gasses Association (EIGA) European Cylinder Manufactures' Association (ECMA) A list of attendees is attached as Annex A. 2 Adoption of the draft agenda (N 1415) The Secretary displayed an up-dated agenda showing the document numbers (in blue) that had been circulated since the draft agenda.

1

http://www.bsigroup.com/

3 Notification of any other business The following items were raised and agreed to be taken under item 13.

13.1 Result of the systematic review of ISO 4706 (N 1425) 13.2 WG 18 13.3 Role of pressure relief devices 13.4 Future work of WG 24

The up-dated agenda is attached as annex B. 4 Appointment of a resolution drafting committee Mr J Loumeto (France) and Mr S Davies (UK) and the Secretary agreed to form the drafting committee for the meeting. The resolutions agreed during the meeting are attached as annex C. 5 Approval of the draft report of the last meeting (N 1390) 5.1 Technical accuracy The report of the last meeting was reviewed page by page. The following corrections were noted:

Page 1 item 4 'Dr Pascal Verville' should read 'Mr Pascal Verville' Page 4 item 11 Title of standard,' ….steel and aluminium gas cylinders' Should read '……steel and aluminium alloy gas cylinders' Page 6 item 14 Penultimate paragraph 'November 2009' should read 'November 2010' Page 6 item 15 first paragraph …'pressure about 60 bar'… should read …'pressure

above 60 bar'… Annex A List of delegates Robert Smith should read Roger Smith Gopala Vinjamum should read Gopala Vinjamuri

5.2 Matters arising that are not included elsewhere on the agenda Item 5 – Action Mr Oliveira Mr Oliveira reported that he anticipated in the next couple of months to be able to sent the Secretary a new work proposal dealing with Transportable refillable welded steel cylinders. Item 9 – Liaisons Mr Oliveira reported that Mr Vicoso was no longer the liaison contact with WLPGA; he had met his successor and could confirm that WLPGA wished to continue their liaison with ISO/TC 58/SC 3. 6 Secretary's report & Work Programme (N 1422) The Secretary introduced document N 1422 and said that it was intended to provide a 'snap-shot' of the committee structure and the current status of each work item. The Secretary advised the meeting of the following up-dates since circulation:

• The Chairman of SC 4 is now Mr Richard Craig • WG 24 – ISO TR 13086-1 had now been published

2

• WG 31 – ISO 11513 had now been published • ISO 4706:2008 – The result of the periodic review had been circulated as N 1425

7 Report of UN and ISO/TC 58 activities relevant to SC 3 (N 1426) Dr Jubb gave an over view of the report.

Section 1 gave a list of ISO/TC 58 standards that are referenced in the 17th edition of the UN Model Regulations – changes from the 16th edition were underlined. Section 2 gave a list of ISO/TC 58 draft standards that would be considered for referencing in the 18th edition of the UN model regulations Section 3 covered UN activities concerning MEGCs and the ISO 9809 series of standards. As a result of a brief discussion about the availability of superseded standards during the transitional period (6 years in the ISO proposal) Dr Jubb under took to contact Mr Dryden at ISO/CS to enquire about availability.

Action: Dr Jubb 8 Working group progress reports 8.1 WG 17 – Compressed natural gas cylinders for road vehicles

Convenor Mr Webster

ISO 11439, Gas cylinders - High pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles

A full report from the working group Convenor is attached as annex D. In the absence of Mr Webster the meeting reviewed this report. The meeting asked that the Chairman & Secretary contact the convenor to clarify his understanding of some of the ISO drafting rules.

Action: Chairman and Secretary The meeting agreed that the current target dates were unobtainable due in part for a 2nd DIS ballot to be conducted. The meeting asked the Secretary to contact ISO/CS and request that ISO/TMB grant an extension of 12 months to the FDIS target date.

Resolution No.002/2011 The meeting also asked the convenor to circulate the comments from ISO/CS together with how he proposed to resolve them to the members of WG 17.

Action: Mr Webster 8.2 WG 19 – Test methods on fracture performance for high strength aluminium

Convenor Mr Birch

ISO 7866, Gas cylinders -- Refillable seamless aluminium alloy gas cylinders – Design, construction and testing

The Chairman said that he had been advised that Mr Birch was unable to attend due to a health problem. The text of the first ISO/FDIS 7866 had contained fundamental errors. These had been corrected and the text re-submitted to ISO/CS for a second FDIS ballot in June. It is anticipated that the 2nd FDIS ballot will be launched in November 2011. The Secretary reported that after much chasing he had received the following explanation from ISO/CS for the apparent delay in launching the 2nd FDIS ballot.

'-- the large bulk of the delay has less to do with internal editing than having to wait the two-month period for a French/German translation and also the fact that this

3

document as a Vienna Agreement document is also subject to a 28 day review by the CEN Consultant...'

8.3 WG 23 – Welded steel pressure drums

Convenor Mr Brillaud

ISO 21172-1, Gas cylinders - Welded steel pressure drums up to 3 000 litre capacity for the transport of gases - Design and construction - Part 1: Capacities up to 1 000 litres

In the absence of the convenor Dr Barthélémy gave the following up-date. On 26th September a draft had been circulated to working group members asking for comments by the end of November. If the WG members approve the draft it will be sent to the Secretary to conduct the CD ballot. 8.4 WG 24 – Factors of safety for composite cylinders (N 1427)

Convenor Mr Newhouse

ISO/TR 13086-1 Gas cylinders – Guidance for design of composite cylinders – Part 1: Stress rupture of fibres and burst ratios related to test pressure

Mr Newhouse reported that ISO/TR 13086-1 had been published by ISO/CS in September 2011. There were a number of additional topics that the working group was considering for a future edition of the technical report. These included:

• cyclic fatigue of composite and liners, and how to determine the stress ratio in vessels of different construction,

• loads induced by mounting provisions and in cylinder bundles, • evaluation of sidewall impact, • the extent to which resin selection affects stress rupture.

The working group was also considering whether any new work item should be initially registered at the preliminary stage rather than directly onto the active work programme. 8.5 WG 27 – Composite cylinders (N 1428)

Convenor Mr Trudgeon

ISO 11119, Gas cylinders of composite construction - Specification and test methods Part 1: Hoop wrapped composite gas cylinders and tubes Part 2: Fully wrapped fibre reinforced composite gas cylinders and tubes with load-sharing metal liners Part 3: Fully wrapped fibre reinforced composite gas cylinders and tubes with non-metallic and non-load-sharing metallic liners Part 4: Fully wrapped fibre reinforced composite gas cylinders with load-sharing welded metal liners

The convenor stated that the priority of the working group was parts 1 to 3 of the ISO 11119 series, part 4 would be dealt with when time permitted. Parts 1 to 3 were interconnected. This was of concern as part 3 had been disapproved at the DIS stage and would require a second DIS ballot potentially causing a delay for parts 1 & 2.

4

The convenor then went on to describe the problems the working group had experienced is reaching an agreement on the purpose of the Bonfire Test.

One view is that the Bonfire Test is to test a particular cylinder and PRD combination. In this case the cylinder has to be tested with all combinations of Valve/PRD that can be used with the cylinder. A second view is that the Bonfire Test is to test the resistance of a particular cylinder design to failure in a fire. The cylinder should be fitted with a valve/PRD or some other method to venting the cylinder safely but the intention is to show that the cylinder won't burst in a given time frame in a fire.

The convenor asked for guidance from the meeting with particular regard to what the Bonfire Test is supposed to prove. There followed a wide ranging discussion. In Summary

• It was generally agreed that cylinders should remain reliable in a fire • Different countries had different attitudes to the use of PRDs • Potentially a PDR could create a larger than necessary fire if it released a flammable

gas when the cylinder was only involved in a small fire. Also the speed of release of a gas was critical.

The USA said that they viewed a system test to include a PDR while a cylinder test did not include a PDR UK – the issue of the behaviour of cylinders in fires and the use of PRDs was of concern to more experts than those in SC3. A working group under ISO/TC 58 should be set up for a wide ranging study. Chairman – SC 3 has a current need for a decision on how to test composite cylinders. We cannot wait for such comprehensive study and there is no proposal for SC3 to consider. UK – Willing to provide scope – post meeting. ECMA – Assumes that the UK proposal will include a wide variety of sizes and types of cylinder Italy – asks that WG 27 reviews the current Bonfire Test and produces some clarification as the existing test does not have clear acceptance criteria Proposal - Instruct WG 27 to proceed with the ISO 11119 series with the Bonfire Test provision as written in the current 2002 editions of ISO 11119 and ask WG 24 to develop principles for a more effective Bonfire Test. Norway – asks that WG 27 include in the current Bonfire Test the option of conducting the test on a cylinder without a PDR fitted Germany – ISO 11439 (WG 17) currently requires a 2 minute in fire-test; the cylinder may bend but must remain safe. SC 3 has a number of variables in the Bonfire Test in its published standards. What is required is a comprehensive test covering all cylinders. Germany agrees with the views expressed by the UK. Norway – There is a need for different test criteria for different applications.

5

France – How cylinders behave in a fire in important, in some circumstances it is necessary to release the gas under control. The use of PRDs in the Bonfire Test should be an option. Final instruction – WG 27 are to proceed with the revisions of the ISO 11119 series of standards with the Bonfire Test as it appears in the current (2002) versions of the standards – taking account of the foregoing proposal. WG 27 convenor withdrew his request for direction from SC 3. ISO 11119 parts 1 to 3 Mr Trudgeon said that he had re-considered the target dates for parts 1 to 3 and he was confident that for parts 1 & 2 he would be able to meet the current target dates. However for part 3 this would not be possible owing to the need for a 2nd DIS ballot. The meeting agreed with Mr Trudgeon's assessment and asked the Secretary to contact ISO/CS and request that ISO/TMB grant an extension of 12 months to the FDIS target date.

Resolution No.003/2011 ISO 11119 part 4 The meeting considered that the workload of Mr Trudgeon as convenor of WG 27 and project leader for all four parts of the ISO 11119 series was considerable and should be reduced. The meeting agreed to appoint Mr Oliveira as the project leader for ISO 11119-4. Mr Trudgeon however would still call working group meetings.

Resolution No.004/2011 8.6 WG 28 – Seamless steel tubes

Convenor Mr Bassanini

ISO 11120, Gas cylinders - Refillable seamless steel tubes for compressed gas transport, of water capacity between 150 l and 3000 l - Design construction and testing

A full report from the working group Convenor is attached as annex E. The Bassanini summarized his report to the meeting. He particularly raised the issue of the ratio between hydraulic test pressure and working pressure. Sweden had proposed that the ratio was transferred from a note (informative) to the text of the standard and made normative. WG 28 had decided not to adopt this suggestion for the following reasons:

• The current draft was in line with ISO 9809 and other standards • The tube could be charged to different levels in different countries following different

regulations • The draft was in all other ways ready for FDIS submission

He asked for confirmation from SC 3 that this approach was appropriate. The meeting agreed that the ratio should remain as a note and not be made a normative requirement. The meeting recognised that the work of the revision was in advance of the work on the amendment. It was decided to delete the amendment project upon the publication of the revision.

Resolution No.005/2011 Secretary's post meeting note: The DIS ballot result of the amendment has been circulated as N 1433.

6

8.7 WG 29 – Revision of ISO 11118:1999 Convenor Mr Gentry

ISO 11118, Gas cylinders - Non-refillable metallic gas cylinders - Specification and test methods

Mr Gentry was unable to attend the meeting, in his absence the Chairman read out a letter from DIN raising concerns as to how the FDIS draft had been developed by the convenor. The letter said that resolutions 56/10 (scope) and 56/13 (bursting pressure to test pressure ratio) taken at the last meeting have not been satisfied. In particular neither working group meetings nor any consultations with working group members had taken place since the last meeting of ISO/TC 58/SC 3. Finally it asked for the FDIS draft to be withdrawn. The resulting discussion revealed that;

• A number of member countries had not been involved with the development of the bursting pressure to test pressure ratio nor the rationale for it.

• Acetylene had not been excluded from the scope The meeting went on to reviewed resolutions 56/14 & 56/15 (ref N 1390) taken at the 2010 meeting and concluded that resolution 56/15 had not been satisfied. The meeting decided that:

• the Secretary should contact ISO/CS and ask that the FDIS draft is withdrawn • the convenor with the evident consensus of the working group should fulfil the

provisions of resolutions 56/10 & 56/13. The meeting then considered the following resolutions recently taken by ISO/TC 58/SC 2

Resolution 26 – To amend ISO 13340 to harmonize with ISO/FDIS 11118 concerning pressure ratio ISO/TC 58/SC 2 agreed to launch the ballot on NWIP for an amendment to ISO 13340 to harmonize the pressure for the cylinder and the valve (Valve to cylinder interface test) In favour: unanimous Against: none Abstain: none Resolution 27 – To propose the merging of ISO 13340 with ISO 11118 ISO/TC 58/SC 2 agreed to propose to ISO/TC 58/SC 3 to integrate ISO 13340 in the current revision of ISO 11118 (if possible) or to open a NWI in order to merge both ISO 11118 and ISO 13340 to make one document covering the valve and cylinder In favour: unanimous Against: none Abstain: none

As a result the meeting further asked the convenor to incorporate the requirements of ISO 13340 into the draft of ISO 11118. The resultant draft is to be sent to a 2nd DIS ballot.

Resolution No.006/2011

7

8.8 WG 31 – Refillable welded steel cylinders for sub-atmospheric gas

storage (excluding acetylene) (N 1429) Convenor Mr Sameth

ISO 11513, Gas cylinders – Refillable welded steel cylinders containing adsorbent materials for sub-atmospheric gas packaging -- Design, construction and testing

The Secretary confirmed that ISO 11513 had been published by ISO/CS in the last few weeks. Mr Sameth wished to thank the working group members for their work and co-operation and said that it had been a positive experience being convenor of WG 31. Recognising that the work of WG 31 was at an end the meeting agreed that it should be disbanded.

Resolution No.007/2011 8.9 WG 32 – Refillable composite reinforced tubes of water capacity between

150 L and 3 000 L – Design, construction and testing (N 1430) Convenor Mr Trudgeon

ISO 11515, Gas cylinders – Refillable composite reinforced tubes of water capacity between 150 L and 3 000 L – Design, construction and testing

Mr Trudgeon up dated the meeting by saying that the working group had resolved over half of the comments submitted during the failed DIS ballot. He anticipated being able to send the Secretary a draft for a 2nd DIS ballot by the end of 2011. The working group had the same unresolved issues concerning the Bonfire Test as WG 27 and should handle them in the same way. 8.9 WG 33 – Development of ISO 9809-4 (N 1431)

Convenor Dr Barthélémy

ISO 9809-4, Refillable seamless steel gas cylinders – Design, construction and testing – Part 4: Stainless steel cylinders with tensile strength less than 1 100MPa

The CD ballot had closed a few days before the meeting. Dr Barthélémy anticipated being able to resolve the comments by correspondence with the working group members thereby saving everybody considerable time and money.

Secretary's post meeting note: The CD voting result and comments have been circulated as N 1434.

8.10 WG 34 – Manufacturing imperfections on seamless steel and aluminium gas

cylinders Convenor Mr König

ISO/TR 16115, Development of provisions for manufacturing defects and manufacturing imperfections for seamless steel and aluminium alloy gas cylinders

A full report from the working group Convenor is attached as annex F. Mr König reported that earlier in the week WG 34 had met and resolved the comments from the draft technical report.

8

However the meeting had concluded that the title of TR 16115 was amended to more accurately reflect the content;

from “Gas Cylinders – Provisions for manufacturing imperfections for seamless steel and aluminium alloy gas cylinders” to “Gas Cylinders - Classification of imperfections arising during the manufacture of seamless steel and aluminium alloy gas cylinders”.

Improved photographs would also be needed. Usually Technical Reports are not balloted for a second time before being submitted to ISO/CS for publication. The meeting however acknowledged that this was a particularly important document and so asked the Secretary to conduct a special additional ballot of members when the final version is available.

Resolution No.008/2011 9 Joint working groups with ISO/TC 197, Hydrogen technologies 9.1 WG 6 – Gaseous hydrogen and hydrogen blends - Land vehicle fuel tanks

Liaison officer Mr Webster

A full report from Mr Webster is attached as annex G. In the absence of Mr Webster the meeting reviewed the report. The most significant matter was the launch of a further DIS ballot of ISO 15869, Gaseous hydrogen and hydrogen blends -- Land vehicle fuel tanks even though 2 significant issues remain outstanding namely Stress ratios and Gunfire penetration test The DIS ballot closes on 7th December 2011. 9.2 WG 10 – Transportable gas storage devices - Hydrogen absorbed in

reversible metal hydride Liaison officer Mr Stetson

The Secretary reported that he had not received a liaison report. It was understood that WG 10 currently had not active work items. 9.3 WG 15 – Gaseous hydrogen - Cylinders and tubes for stationary storage

Liaison officer Dr Barthélémy

Dr Barthélémy reported that the development of ISO/NP 15399, Gaseous hydrogen - Cylinders and tubes for stationary storage was proceeding well. The next meeting was scheduled for November. He anticipated that this would result in a draft for CD ballot. 10 New work item ballot result

ISO/NP 17519: Gas Cylinders – Refillable permanently mounted composite tubes for transportation (N 1423)

The Secretary asked the meeting to which working group this new approved work item should be allocated or should a new working group be established.

9

Italy raised the concern that there is a conflict between ISO/DIS 11515 (cylinders between 150 litres and 3 000 litres) and ISO/NP 17519 (cylinders between 450 litres and 10 000 litres). The UK said that SC 3 should ensure that ISO 11515 is published before ISO 17519. Also in their view cylinders over 3 000 litres were tanks and therefore outside the scope of ISO/TC 58. Germany supported the UK view stating that cylinders end at 3 000 litres, above this containers are classified as portable tanks. Also in their opinion the technology is not yet mature enough for standardization. The Chairman reminded the meeting that ISO/NP 17519 was an approved work item. The USA suggested that to remove the potential overlap of the standards the scope of ISO/NP 17519 should be amended to cylinders over 3 000 litres capacity. The Chairman responded that it was too early to force a change of scope; to do so would require a re-ballot of the work item. The meeting decided to establish a new working group and appoint Mr Heggem as convenor.

Resolution No.009/2011 11 Liaison reports 11.1 ISO/TC 17/SC 10, Steel for pressure purposes No information had been received by the Secretary. The meeting decided to formally appoint Mr Tiago Oliveira as their liaison officer. 11.2 ISO/TC 21/SC 2, Manually transportable fire extinguishers – and

ISO/TC 21/SC 5, Fixed fire fighting systems using water No information had been received by the Secretary. The Chairman and Secretary were asked to establish the value of these liaisons.

Action Chairman & secretary 11.3 ISO/TC 22, Road vehicles and

ISO/TC 22/SC 25, Vehicles using gaseous fuels Dr Cola was confirmed as the official liaison officer for these two committees. Dr Cola reported that several of the ISO 15500, Road vehicles -- Compressed natural gas (CNG) fuel system components series of standards were being prepared for FDIS ballots. 11.4 EIGA, European Industrial Gases Association (N 1432)

Liaison officer Mr Webb

In addition to his report Mr Webb confirmed that EIGA continued to support the work of ISO/TC 58/SC 3. 11.5 AEGPL, European LPG Association A liaison report from Mr Xydas is attached as annex H. It was understood that AEGPL had recently under gone some re-organisation. Nevertheless the organisation confirmed its strong support for the work of ISO/TC 58/SC 3.

10

11.6 ECMA, European Cylinder Manufactures' Association

Liaison officer Mr Gerhard König

Mr König confirmed that ECMA would continue to take an active role in the work of ISO/TC 58/SC 3. 11.7 IANGV, International Association for Natural Gas Vehicles No information received 12 Anticipated new work items Mr Oliveira advised the meeting that Portugal were preparing a new work proposal for Welded cylinders designed by experimental means. This will be sent to the Secretary in a couple of months. 13 Any other business 13.1 Result of the systematic review of ISO 4706 (N 1425) The result of the systematic review of ISO 4706:2008, Gas cylinders -- Refillable welded steel cylinders -- Test pressure 60 bar and below showed a majority of members had voted for confirmation however some technical comments had been submitted by Sweden and France. The meeting confirmed that there had been no reported problems in the use of the standard. It was agreed to confirm the standard. However Sweden and France were invited to develop a new work proposal based on their comments.

Resolution No.010/2011 13.2 WG 18 – Cancelled work item ISO 26444-2 Dr Barthélémy questioned the cancellation of this work item. The Chairman responded that this was in response to the disapproval of the 2nd DIS text and the ratification of resolution 54/10 by the meeting in 2010 (Ref N 1390). Dr Barthélémy said that the negative votes were not really on technical grounds. The Chairman responded by referring to the voting result (N 1339) the draft had been disapproved by both the criteria laid down by ISO/CS and votes on grounds such as market need, state of the art and global relevance were equally valid to those on technical grounds. He had also seen correspondence with the Secretary giving full advice on how to re-launch the project. 13.3 Role of pressure relief devices The UK said that this matter had been sufficiently discussed under item WG 27 earlier in the meeting. The UK gave notice that they were preparing a new work proposal. 13.4 Future work of WG 24 Mr Newman's (convenor of WG 24) discussion paper is attached as Annex I The presentation was in two parts

• Proposal for addressing Bonfire Test issues in ISO/TC 58/SC 3/WG 24 • New work proposal for WG 24 to consider

11

Responses The UK said that in their view this was a subject for ISO/TC 58 not SC 3 or WG 24 The Chairman suggested starting by addressing a specific area that is presenting a problem and then later broadening the scope. Italy said that using or not using Pressure Relief Devices (PRD) is not the question it should be should the Bonfire Test be conducted at all? USA said that if someone wants to conduct the Bonfire Test they should be permitted to do so with or with out PRDs being involved. UK said that type 1 cylinders should not be included in any work being carried out by WG 24 as they are not in the scope of WG 24. WG 24 is restricted to composite cylinders Mr Newhouse confirmed that any new work proposal would be within the scope of WG 24. 14 Requirements concerning subsequent meetings The meeting accepted an offer made on behalf of the national standards body of the USA (ANSI) to host the 2012 meeting of ISO/TC 58/SC 3. It is anticipated that the meeting will run from 23rd to 25th October 2012 and would be followed by the plenary meeting of TC58. The opportunity for working group meetings would therefore be very limited. Confirmation will follow in due course from the secretary.

Resolution No.011/2011 The Chairman thanked IPQ, ISA and Amtrol Alfa for hosting the 2011 meeting in Lisbon and for their generous and enjoyable hospitality.

Resolution No.012/2011 15 Approval of resolutions Resolutions 001/2011 to 012/2011 were agreed, some unanimously some by majority; they are listed in English and French in annex C. Closing of the meeting The Chairman said that in his opinion the meeting had been very constructive and thanked the delegates for their individual contributions. He then wished everybody a safe journey home and closed the meeting. Meeting closed

12

Annex A List of Attendees

Lisbon – Portugal 18th to 20th October 2011

Chris Jubb Chairman (Acting) Stephen Read Secretary Walter Fischer Austria Pascal Verville Canada Sun Dongsheng China Zhang Baoguo China Aleš Musial Czech Republic Gerhard König ECMA A P Webb EIGA Per Sigurd Heggem Norway Wolfgang Dörner Germany Hans Weinberger Germany Jocelyn Loumeto France Hervé Barthélémy France Albert Spencer South Africa Luigi Cola Italy Gianluca Bassanini Italy Alexis Guadarrama Italy Matteo Illesi Italy Satoshi Kobayashi Japan Tiago Oliveira Portugal Roy Irani UK Simon Davies UK Jack B Wert USA Norman Newhouse USA Mark Toughiry USA John H Smith USA Mark Trudgeon USA Jerrold D Sameth USA

13

Annex B

ISO/TC58/SC 3 N 1415

Draft agenda – Up-dated

1 Opening of the meeting / apologies for absence

2 Adoption of the agenda N 1415

3 Notification of any other business

4 Appointment of a resolution drafting committee

5 Approval of the draft report of the last meeting for: N 1384 N 1390

5.1 Technical accuracy 5.2 Matters arising that are not included elsewhere on the agenda

6 Secretary's report & Work Programme N 1422

7 Report of UN and ISO/TC 58 activities relevant to SC 3 Dr Jubb N 1426

8 Working group progress reports (Convenors are requested to send the secretary written reports by 10th October)

WG 17 Compressed natural gas cylinders for road vehicles Mr Webster

WG 19 Test methods on fracture performance for high strength aluminium Mr Birch

WG 23 Welded steel pressure drums Mr Brillaud

WG 24 Factors of safety for composite cylinders Mr Newhouse N 1427

WG 27 Composite cylinders Mr Trudgeon N 1428

WG 28 Seamless steel tubes Mr Bassanini

WG 29 Non-refillable metallic gas cylinders – Specification and test methods Mr Gentry

WG 31 Refillable welded steel cylinders for sub-atmospheric gas storage (excluding acetylene) Compressed natural gas cylinders for road vehicles Mr Sameth N 1429

WG 32 Refillable composite reinforced tubes of water capacity between 150l and 3 000l – Design, construction and testing Compressed natural gas cylinders for road vehicles Mr Trudgeon N 1430

WG 33 Refillable seamless steel gas cylinders – Design, construction and testing – Part 4: Stainless steel cylinders with tensile strength less than 1 100MPa Dr Barthélémy N 1431

WG 34 Manufacturing imperfections on seamless steel and aluminium gas cylinders Mr König

14

9 Joint working groups with ISO/TC 197, Hydrogen technologies

WG 6 Gaseous hydrogen and hydrogen blends - Land vehicle fuel tanks Mr Webster

WG 10 Transportable gas storage devices - Hydrogen absorbed in reversible metal hydride Mr Stetson

WG 15 Gaseous hydrogen - Cylinders and tubes for stationary storage Dr Barthélémy

10 New work item ballot result:

ISO/NP 17519: Gas Cylinders – Refillable permanently mounted composite tubes N 1423 for transportation

11 Liaison reports

ISO/TC 17/SC 10, Steel for pressure purposes

ISO/TC 21/SC 2, Manually transportable fire extinguishers

ISO/TC 21/SC 5, Fixed fire fighting systems using water

ISO/TC 22, Road vehicles

ISO/TC 22/SC 25, Vehicles using gaseous fuels

AEGPL, European LPG Association

ECMA, European Cylinder Manufactures' Association

EIGA, European Industrial Gases Association N 1432

IANGV, International Association for Natural Gas Vehicles

12 Anticipated new work items

13 Any other business

13.1 Result of the systematic review of ISO 4706 N 1425

13.2 WG 18

13.3 Role of pressure relief devices

13.4 Future work of WG 24

14 Requirements concerning subsequent meetings

15 Minutes Break (for the drafting of resolutions)

15 Approval of resolutions

Closing of meeting

15

Annex C

Resolutions passed by the meeting of ISO/TC 58/SC 3 held from 18th to 20th October 2011 in Lisbon, Portugal

Resolution No.001/2011 – Chairman for the meeting ISO/TC 58/SC 3; Noting with disappointment the absence of the Chairman, Dr Hepples Agrees,

• to a proposal made by the Secretary that Dr Jubb should take the chair for the 2011 meeting of ISO/TC 58/SC 3.

Resolution passed unanimously

Resolution No.002/2011 – ISO 11439 (WG 17) ISO/TC 58/SC 3;

• asks the secretary to contact ISO/CS and request that the target dates for ISO 11439 are amended as follows;

Limit dates: Current Proposed

DIS --- ---

FDIS 30-03-2012 30-03-2013

IS 30-09-2012 30-09-2013 Justification

• 1st DIS draft was disapproved, • Over 30 pages of comments were submitted by member bodies during the DIS ballot

requiring resolution before submission to ISO/CS for a 2nd DIS ballot, • Conformance issues raised by ISO/CS.

Voting For: Austria, Canada, China, Czech Republic, Germany, Italy, Japan, Norway, Portugal, South Africa, UK & USA Against: Nil Abstain: France

Resolution passed by majority

16

Resolution No.003/2011 – ISO 11119-3 (WG 27) ISO/TC 58/SC 3;

• asks the secretary to contact ISO/CS and request that the target dates for ISO 11119-3 are amended as follows;


DIS --- ---

FDIS 21-07-2012 21-07-2013


• 1st DIS draft was disapproved, • Over 30 pages of comments were submitted that require resolution by the working

group before a revised draft can be completed and submitted to ISO/CS for a 2nd DIS ballot.


Resolution No.004/2011 – WG 27

ISO/TC 58/SC 3; Recognises,

• that the current work load of Mr Trudgeon as both the convenor of WG 27 and project leader to the revision of the ISO 11119 series of standards is considerable.

Decides, • to mitigate this by re-allocating the role of project leader for the development of ISO

11119-4 to Mr Oliveira within WG 27

Voting For: Canada, China, Czech Republic, France, Germany, Japan, Norway, Portugal, South Africa, UK & USA Against: Italy Abstain: Austria

Resolution passed by majority Resolution No.005/2011 – ISO 11120 & ISO 11120/Amd 1 (WG 28) ISO/TC 58/SC 3; Recognises,

• that the revision of ISO 11120 is now more advanced than the development of ISO 11120/Amd 1,

• that the amendment is included in the revision of ISO 11120. Decides,

• that when the revision of ISO 11120 is published the work item of the amendment should be cancelled.

The secretary is asked to circulate the result of the DIS ballot of the amendment in the usual way.


17

Resolution No.006/2011 – ISO/FDIS 11118 (WG 29) ISO/TC 58/SC 3; Acknowledges,

• that a draft has been submitted to ISO/CS for the FDIS ballot. Considers,

• that resolutions 56/10 (scope) and 56/13 (bursting pressure to test pressure ratio) taken at the last meeting have not been satisfied.

Request,

• that the secretary contact ISO/CS and asks that the draft is withdrawn. Instructs the convenor,

• to fulfil resolutions 56/10 and 56/13, convening meetings of the working group as necessary to ensure its broad agreement,

• to additionally incorporate the requirements and provisions of ISO 13340 in accordance with resolutions 26 & 27/2011 of ISO/TC 58/SC 2 .

Recognising,

• that these instructions will involve significant technical changes to the current draft directs the resulting draft to be submitted to a 2nd DIS ballot.

Further,

• asks the secretary to contact ISO/CS and request that the target dates for ISO 11118 are amended as follows;


DIS --- ---

FDIS 20-05-2012 20-11-2013

IS 20-11-2012 20-05-2014

Voting For: Austria, China, Czech Republic, Germany, Japan, Norway, Portugal, South Africa & UK Against: Nil Abstain: Canada, France, Italy & USA

Resolution passed by majority Resolution No.007/2011 – WG 31

ISO/TC 58/SC 3; Accepting,

• that with the publication of ISO 11513 the work assigned to WG 31 has been completed.

Decides, • to disband WG 31.


18

Resolution No.008/2011 – ISO/TR 16115 (WG 34) ISO/TC 58/SC 3 Accepts,

• a recommendation from WG 34 to change the title of ISO/TR 16115 from “Gas Cylinders – Provisions for manufacturing imperfections for seamless steel and aluminium alloy gas cylinders” to “Gas Cylinders - Classification of imperfections arising during the manufacture of seamless steel and aluminium alloy gas cylinders”.

Further,

• to ensure wide acceptance of ISO/TR 16115 the secretary is requested to carry out a committee ballot of the final draft before submitting to ISO/CS for publication.


Resolution No.009/2011 – ISO/NP 17519

ISO/TC 58/SC 3; Decides,

• to establish a new working group for the development of ISO 17519, • Mr Heggem is confirmed as convenor and project leader.

Voting For: Canada, China, France, Norway, Portugal, South Africa & USA Against: Italy Abstain: Austria, Czech Republic, Germany, Japan & UK

Resolution passed by majority Resolution No.010/2011 – ISO 4706:2008

ISO/TC 58/SC 3; Having considered the result of the periodic review of ISO 4706:2008 (N 1425)

Decides, • to confirm ISO 4706:2008 for a further 5 years.

Voting For: Austria, Canada, China, Czech Republic, Germany, Italy, Japan, Norway, Portugal, South Africa, UK & USA Against: Nil Abstain: France

Resolution passed by majority 19

Resolution No.011/2011 – Host for a subsequent meeting

ISO/TC 58/SC 3; • accepts an offer from the standards body of the USA, ANSI to host the 2012 meeting

of ISO/TC 58/SC 3 It is anticipated that the meeting will run from 23rd to 25th October 2012. Confirmation will follow in due course from the secretariat.

Resolution passed unanimously Resolution No.012/2011 – Appreciation of the host ISO/TC 58/SC 3 wishes to thank IPQ, ISQ and Amtrol Alfa for hosting the meeting in Lisbon and for providing most generous and enjoyable hospitality.


20

Résolutions acceptées au cours de la réunion de L’ISO/TC 58/SC 3 tenue du 18

au 20 octobre 2011 à Lisbonne, Portugal Résolution N°001/2011 – Président de la réunion ISO/TC 58/SC 3; Notant avec regret l'absence du président, le Dr Hepples Accepte:

• La proposition faite par le secrétaire d'accorder la présidence de la séance de réunion de 2011 de l'ISO/TC 58/SC 3 au Dr Jubb

Résolution prise à l'unanimité Résolution N°002/2011 – ISO 11439 (GT 17) ISO/TC 58/SC 3;

• demande au secrétaire de contacter l'ISO/CS et de demander que les dates cibles du projet ISO 11439 soient amendées telle que ci-dessous:

Dates limites: Actuelle Proposée

DIS --- ---

FDIS 30-03-2012 30-03-2013


• Le 1er DIS a été rejeté, • Plus de 30 pages de commentaires ont été soumis par les pays membres pendant le

vote DIS, commentaires demandant à être traités avant que le document ne soit envoyé à l'ISO/CS pour un 2nd vote DIS,

• L'ISO/CS a soulevé des problèmes de non conformité Vote Pour: Autriche, Canada, Chine, République Tchèque, Allemagne, Italie, Japon, Norvège, Portugal, Afrique du Sud, Royaume-Uni et États-Unis Ont voté contre: Néant Abstention: France

Résolution prise à la majorité

21

Résolution No.003/2011 – ISO 11119-3 (GT 27) ISO/TC 58/SC 3;

• demande au secrétaire de contacter l'ISO/CS et de demander que les dates cibles du projet ISO 11119-3 soient amendées telle que ci-dessous:

• asks the secretary to contact ISO/CS and request that the target dates for ISO 11119-3 are amended as follows;

Dates limites: Actuelle Proposée

DIS --- ---

FDIS 21-07-2012 21-07-2013


• Le 1er DIS a été rejeté, • Plus de 30 pages de commentaires ont été soumis par les pays membres pendant le

vote DIS, commentaires demandant à être traités avant que le document ne soit envoyé à l'ISO/CS pour un 2nd vote DIS,

Résolution prise à l'unanimité

Résolution No.004/2011 – GT 27

ISO/TC 58/SC 3; Reconnait,

• Que l'actuelle charge de travail de l'animateur et chef de projet du GT 27, pour la révision de la série ISO 11119, est considérable

Décide, • de compenser ce fait en réallouant le rôle de porteur de projet, pour le

développement à l'intérieur du GT 27 de l'ISO 11119-4, à Mr Oliveira Vote Pour: Canada, Chine, République Tchèque, France, Allemagne, Japon, Norvège, Portugal, Afrique du Sud, Royaume-Uni et États-Unis Contre: l'Italie Abstention: l'Autriche

Résolution prise à la majorité Résolution No.005/2011 – ISO 11120 & ISO 11120/Amd 1 (GT 28) ISO/TC 58/SC 3; Reconnait,

• que le projet de révision de l'ISO 11120 est à un stade plus avancé que le développement de l'ISO 11120/Amd 1

• que l'amendement est inclus dans le projet de révision de l'ISO 11120. Décide,

• quand la révision de l'ISO 11120 sera publiée, le projet de travail sur l'amendement soit supprimé

Le secrétaire est prié de diffuse les résultats du vote DIS sur l'amendement par la voie usuelle.

Résolution prise à l'unanimité 22

Résolution No.006/2011 – ISO/FDIS 11118 (GT 29) ISO/TC 58/SC 3; Reconnait,

• que le document de travail a été soumis à l'ISO/CS pour lancer le vote FDIS. Considère,

• que la résolution 56/10 (domaine d'application) et 56/13 (pression d'éclatement testé en fonction du rapport de pression) prises lors de la dernière réunion n'ont pas été satisfaites.

Demande,

• que le secrétaire contacte l'ISO/CS et demande que le document de travail soit retiré. Charge l'animateur,

• de remplir la résolution 56/10 et 56/13 en convoquant une réunion du groupe de travail nécessaire pour s'assurer la plus large acceptation.

• D'intégrer les exigences et les dispositions de la norme ISO 13340, conformément aux résolutions 26 et 27/2011 de l'ISO / TC 58/SC 2.

Reconnaissant,

• que ces instructions entraîneront d'importantes modifications techniques au projet actuel demande que le projet résultant soit soumis à un 2ème DIS.

En outre,

• demande au secrétaire de prendre contact avec l'ISO/CS et de demande que les dates cibles pour l'ISO 11118 sont modifiées comme suit;

Dates limites:

actuelle Proposée

DIS --- ---

FDIS 20-05-2012 20-11-2013

IS 20-11-2012 20-05-2014 Vote Pour: Autriche, Chine, République Tchèque, Allemagne, Japon, Norvège, Portugal, Afrique du Sud et au Royaume-Uni Ont voté contre: Néant Abstention: Canada, France, Italie et États-Unis

Résolution prise à la majorité Résolution No.007/2011 – GT 31

ISO/TC 58/SC 3; acceptant,

• que, avec la publication de la norme ISO 11513, le travail confié au GT 31 est terminé.

décide, de dissoudre le GT 31.


23

Résolution No.008/2011 – ISO/TR 16115 (GT 34) ISO/TC 58/SC 3 Accepte, la recommandation du GT 34 de changer le titre de l'ISO/TR 16115 de

“Bouteilles de gaz -- Provisions pour les imperfections de fabrication des bouteilles de gaz en alliage d'acier et d'aluminium sans soudures” à “Bouteilles de gaz – Classification des imperfections survenant durant la fabrication des bouteilles de gaz en alliage d'acier et d'aluminium sans soudures”.

En outre,

• Pour veiller à une large acceptation de l'ISO/TR 16115 le secrétaire est prié de procéder à un vote du comité (CD) de la version finale avant de soumettre à l'ISO/CS pour publication.

Résolution prise à l'unanimité Résolution No.009/2011 – ISO/NP 17519

ISO/TC 58/SC 3; Décide,

• d'établir un nouveau groupe de travail pour l'élaboration de l'ISO 1751 • M. Heggem est confirmé comme animateur et responsable du projet.

Vote Pour: Canada, Chine, France, Norvège, Portugal, Afrique du Sud et États-Unis Contre: l'Italie Abstention: Autriche, République Tchèque, Allemagne, Japon et Royaume-Uni

Résolution prise à la majorité Résolution No.010/2011 – ISO 4706:2008

ISO/TC 58/SC 3; Ayant examiné le résultat de l'examen périodique de la norme ISO 4706:2008 (N 1425) décide,

• de confirmer ISO 4706:2008 pour encore 5 ans. Vote Pour: Autriche, Canada, Chine, République Tchèque, Allemagne, Italie, Japon, Norvège, Portugal, Afrique du Sud, Royaume-Uni et États-Unis Ont voté contre: Néant Abstention: France

Résolution prise à la majorité

24

Resolution No.011/2011 – Host for a subsequent meeting

L'ISO / TC 58/SC 3; • accepte une offre de l'organisme de normalisation des Etats-Unis, l'ANSI pour

accueillir la réunion 2012 de l'ISO / TC 58/SC 3 Il est prévu que la réunion se déroulera à partir du xxx à yyy Octobre 2012. Le secrétariat enverra les confirmations en temps et en heure.

Résolution prise à l'unanimité Résolution No.012/2011 – Appréciation à l'hôte

L'ISO / TC 58/SC 3 tient à remercier IPQ, ISQ et Amtrol Alfa pour avoir accueilli la réunion de Lisbonne et d'avoir fourni la plus généreuse et agréable des hospitalités.


25

Report of the Convener of ISO TC 58/SC 3/WG 17 to ISO TC 58/SC 3 – Lisbon meeting

October 12, 2011

ISO/DIS 11439 – Natural Gas Vehicle Fuel Cylinders

At the last meeting of TC 58/SC 3, resolution 56/1 directed WG 17 to produce a draft for a 2nd DIS

ballot. Accordingly, a Working Group 17 meeting was held in December 2010, during which all

comments received from the positive DIS ballot were reviewed.

In January 2011 the SC 3 Secretary asked ISO/CS for 1 year extension as the new deadline will be for the

submission of a draft for FDIS.

The DIS version was revised by the Convener and submitted to the Secretary in April 2011 for

circulation, along with responses to all comments received.

An email discussion ensued between the Convener and the Secretary, with advice from the BSI editing

department, regarding certain editorial issues that were raised in comments on the previous DIS

version.

The revised DIS version was again submitted to the Secretary of SC 3 and then forwarded to ISO/CS for a

2nd

DIS ballot in June 2011.

Comments were received from ISO/CS in August 2011 wherein they highlighted a series of conformance

issues that require addressing and some re-drafting before the document can proceed to the 2nd DIS

ballot. Approaches for resolving the non-conformance issues were discussed by email throughout

August 2011 with the Chair and the Secretary of SC 3. Primary issues were as follows:

• It appears that the simple change of one word in a “Note” affected the referencing of certain

standards. For example, ISO C/S stated that;

“The verbs "may" and "should" are not permitted in the Introduction, Scope, definitions or

notes as they suggest permission and recommendations, respectively.”

ISO C/S also stated that;

“ISO 9809-2 and ISO 9809-3 are not cited normatively in the document.”

While these comments are apparently unrelated, it was found that under the Scope, the NOTE

“Cylinders designed in accordance with ISO 9809-1, ISO 9809-2 and ISO 9809-3 and ISO 7866 can

be used for this service provided these designs meet additional requirements as specified in this

standard.”, was changed by the Working Group at its December 2010 meeting to read “….may

be used for this service. It appears this change also triggered the second comment from ISO

C/S.

• ISO C/S also commented as follows:

“…Clause 5 refers to “Approval and certification”. This is not permitted by the ISO/IEC

Directives Part 2, subclause 6.7,…”

It was decided to adopt the wording used, for example, in ISO 9809-1. Thus Clause 5 became “5

Inspection and testing”, and subclause 5.2 became the new Clause 6 “Type approval procedure”.

The addition of a new Clause 6 caused a renumbering of subsequent clauses, and changing of

cross-referenced clauses in the text.

The re-edited DIS text was re-submitted in September 2011 to the SC 3 secretary.

Craig Webster, P.Eng.

Convener of ISO TC 58/SC 3/WG 17

ISO TC 58/SC3/WG28 N502011 10 11

-Page 1 of 2-

ISO TC 58/SC 3/WG 28 – “Seamless steel tubes”Convenor’s report to ISO TC 58/SC3 October 11 – Lisbon meeting

1. Summary of the work

ISO DIS 11120.2 vote was successful in January 2011. 17 P-Members bodies out of 20 were in favor. Three negative votes were submitted by Canada, Sweden and USA.

WG28 meeting (6th meeting) was held on 3rd and 4th May, 2011 in London for the discussion of the open comments to ISO DIS 11120.2. This meeting was held jointly with CEN/TC23/SC1/WG1 to consider specific European requirements and develop the EU Annex.In the two intensive days of the meeting, WG28 considered all the comments from the Member Bodies. Pr EN ISO 11120 was developed in the second day with the contribution also of Mr. K. Wieser (CEN Consultant Transport of Dangerous Goods).

Considering the opinion of the experts attending the meeting in London, WG28decided to apply to SC3 for a FDIS BALLOT. The text for the ballot was submitted to SC3 secretariat in September, 2011 and the ballot circulation is foreseen in December, 2011.

The most relevant actions taken to the standard are:− Burst and pressure cycling tests in prototype approval: the comments from

Canada were considered. WG28 confirmed, considering also the status of development of the standard, the decision taken in the past meeting in Vienna i.e. not to introduce these tests in type approval.

− Material behavior at low temperature (clause 10.2.3): WG28 covered again the comments from Sweden dealing the impact testing and consisting of a) proposal to change the orientation of the impact test pieces from longitudinal to transverse, the most critical direction, b) to lower the impact temperature from -20°C to -50°C.

The discussion, as in the previous meeting in Vienna, took in consideration also the outcome of the work in WG26 (for the revision of ISO 9809 series of standards) and the experience of the manufacturers present. WG28 confirmed the decisions taken in 5th meeting, in particular the following:− tube manufacturers (e.g. CSC, Fiba, Tenaris, etc.) to develop a testing

protocol to explore the possibility of including, for the next revision, transverse direction and to lower temperature for impact test .This activity aims to collect a significant amount of data before revising the standard.

It was pointed out again that a successful impact test carried out at -20°C provides absence of risk of in-service brittle failure of a tube down to lower temperatures. For this revision the impact test conditions remain unchanged.

2. ISO 11120:1999 Amendment of the current version (Design of tubes for embrittling gases) – Status of the process

ISO 11120:1999/DAM1 has been submitted to ballot for approval as a DIS and the deadline date is 2011-10-19.

BalB

Cross-Out

ISO TC 58/SC3/WG28 N502011 10 11

-Page 2 of 2-

3. Matters to be reported to ISO TC 58/SC 3

• Ratio between hydraulic test pressure and working pressure.Note 1 in clause 7.1 “It is generally assumed that ph = 1,5 times working pressure, pw, for compressed gases for tubes designed and manufactured to conform with this International Standard”. Sweden proposed to make a normative statement of the ratio between hydraulic test pressure and working pressure for compressed gases and not to leave this important point in an informative way.

In last meeting in London, WG28 decided not to revise the text at this stage of development for the following reasons:1. the text of the draft document is in line with other ISO standards (e.g. ISO

9809 series of standards),2. the tube could be charged to different levels in different countries following

different regulations,3. status of standard development is at FDIS ballot.

As this topic has impact to different gas cylinders standards, WG28 asks confirmation of this approach at SC3 level.

Gianluca BassaniniConvenor of ISO /TC58/SC3/WG28

Annex F

Report of the convenor of ISO TC58/SC3/WG34 to ISO TC58/SC3 – Lisbon meeting

After distribution of the first draft of the manufacturing imperfections technical report, ISO/PDTR 16115 in March 2011 (document ISO/TC58/SC3 N1400) a series of comments from UK and Italy were received which were distributed as document ISO/TC58/SC3 N1410. Many of the comments were of editorial nature which could be handled by the convenor but the technical comments were necessary to be discussed in a separate working group meeting which took place this week in Lisbon. WG34 was attended by experts from 8 member countries (AT, CAN, CZ, DE, FR, IT, UK, and USA) and 2 liaison organizations (EIGA and ECMA). The working group managed to resolve the comments and a revised version of ISO/PDTR 16115 will be submitted by me within a short time to the secretary for further processing. There was one request within the comments to change the title of the TR from “Gas Cylinders – Provisions for manufacturing imperfections for seamless steel and aluminium alloy gas cylinders” to “Gas Cylinders - Classification of imperfections arising during the manufacture of seamless steel and aluminium alloy gas cylinders”. This change needs ratification by ISO/TC58/SC3 and I kindly ask the Sub Committee to pass a resolution accordingly. One further outstanding issue is the request for improvement of several photographs contained in the TR. As the relevant WG34-expert, Mr. Lee Birch was unable to attend the working group meeting this week; I will contact him after the SC3 meeting to provide these figures. It is my intention to circulate the final version of the Draft TR within WG34 experts for a period of one month to ensure accuracy from this weeks meeting prior to the submission to the secretary. Gerhard König Convenor of ISO/TC58/SC3/WG34

28

JOINT ISO TC 58/SC3 & ISO TC 197 & ISO TC 22/SC 25 WORKING GROUP

Gaseous hydrogen and hydrogen blends – Land vehicle fuel tanks

Report of the Convener – Lisbon meeting

October 12, 2011

Overview

ISO 15869 for Land Vehicle Fuel Tanks is a joint working group between the following:

• TC 58/SC 3 on Gas Cylinders – Design

• TC 197 on Hydrogen Technologies

• TC 22/SC 25 on Vehicles Using Gaseous Fuels.

Background

The hydrogen vehicle fuel tank standard is a highly controversial subject due to the intense

interest of the automotive industry in the development of hydrogen fuel cell electric vehicles.

The automotive industry has jointly announced that this vehicle technology will be

commercialized by 2015. To date there have been 3 failed DIS ballots involving ISO 15869,

largely driven by the automotive industry arguing that it would be premature to publish a

standard when there are technical issues still to be resolved. This argument is not supported by

the fact that the automotive industry is promoting the development of a Global Technical

Regulation for hydrogen fuel cell electric vehicles that will encompass the requirements for a

high pressure hydrogen fuel system (timeline for acceptance is June 2012). In addition, the

automotive OEM passenger vehicle market covered by the GTR represents only one segment of

the total market for high pressure hydrogen fuel cylinders, thus there is a need for a standard that

covers multiple applications.

Following the 3rd

DIS ballot in September 2008, the document was published as a technical

specification in February 2009. In order to ensure that this ISO work continued, the work item

was registered as a new project on 29 June 2009. The TC 197 secretariat initiated the process of

refreshing the composition of the working group. During the ISO/TC 58/SC 3 meeting in

Beijing in October 2009, it was resolved (Resolution 55/1 per ISO TC 58/SC 3 N 1307) to re-

confirm my position as convener of TC 197/JWG6. In October 2010 I was re-confirmed as

convener by the TC 197 secretariat.

Joint Working Group meetings were held in December 2010 (Vancouver), and March 2011

(Tokyo) to review all comments received during the 3rd

DIS ballot.

…/2

Details of Joint Working Group Meetings

All comments were reviewed and resolved, except for 2 major issues that were stalemated: the

need for stress ratios for composite fibres, and the need for the gunfire penetration (or impact

damage) test.

Stress ratios

The issue involves the necessity to specify the stress values that may be applied to fibres to

prevent failure by stress rupture during their service life, compared to using a performance test

involving tanks to determine the service life of the fibres. The automotive OEM concern is that

the prescriptive approach involving the specification of allowable stress ratios prevents or limits

the use of new fibre types, while the tank manufacturers do not believe the performance test

approach has been validated.

In the absence of a validated performance test method alternative, and the fact that there is no

technical reason to delete the table of stress ratios, the Convener concluded that the stress ratios

must remain in the Standard at this time.

Gunfire Penetration Test

It has been argued by the automotive OEMs that the gunfire test is a performance requirement,

since the potential exists for exposure to gunfire during vehicle service. The automotive OEMs

were concerned about requiring a test that could not demonstrate the benefits. In other words, if

a tank design failed a gunfire penetration test, was it really unsuitable for service?

The tank manufacturers consider the gunfire penetration as a necessary test to demonstrate

desirable robustness of a design, since composite structures are susceptible to events involving

high strain rate impacts. They point to the fact that tanks that pass this design have not ruptured

due to collision impacts in vehicle service.

However, it may be that tank designs that do not pass the gunfire penetration test may also not

rupture in the types of collision impacts experienced to date in vehicle service. Thus the issue is,

while tank designs that pass the gunfire test requirements are more robust than tank designs that

do not pass the gunfire penetration, is this increased robustness necessary?

In the absence of any conclusive data about whether the increased safety provided by the gunfire

penetration test is necessary, the Convener concluded that the test must remain in the Standard at

this time as all field service experience to date has involved tank designs that have successfully

completed this test.

…/3

Current Situation

The revised draft standard was submitted to the TC 197 Secretariat in May 2011. The DIS ballot

will complete on December 7, 2011.

Craig Webster, P. Eng.

Convener

Joint Working Group of ISO/TC 197/WG 6 & ISO/TC 58/SC 3 & ISO TC 22/SC 25

Annex H

ISO/TC 58 plays an important role for AEGPL, for the World LP Gas Association (WLPGA) and all their memberships that represent a major part of the worldwide LPG business. In particular, the associations continue to strongly support the work of ISO/TC 58 SC3 and the standards produced. AEGPL and the WLPGA company memberships recognize the increasing role that the adaptation of ISO standards as European Standards and as reference for other regions in the world they are assuming the need to add resources to work closely to the ISO/TC 58 working groups. AEGPL and WLPGA are committed to the ISO process and the promotion of ISO standards, as the standards of choice as appropriate. Nikos Xydas Paris, 14th Oct. 2011

30

Annex I

Discussion paper by Mr Newhouse

Proposal for addressing bonfire issues in TC58/SC3/WG24 Scope: Assessing the behavior of composite pressure receptacles in fires. The initial effort of this group will be to gather information:

• Gather data on “typical” fires, related to transportable pressure receptacles, stationary pressure receptacles/tanks, and vehicle tanks

• Gather incident data where cylinders have been in fires, including rupture, PRD release, or no event

• General capabilities to withstand fire vs. cylinder construction • Summarize testing in current standards

The group will evaluate data that has been gathered • Are the fire test conditions representative of intended service • What are issues with localized vs. engulfing fires • What is the reliability of different cylinder types in different conditions with different

PRDs (or none), and with different time exposure • What issues are involved with unintended release of gases due to malfunctioning

PRDs • What issues are involved with partial vs. full pressure • Use of insulating material

Recommend options for testing • Fire conditions in test (fuel, temperature, et al) • Test with PRD or without PRD • Minimum time in a fire if with PRD or no PRD • Reliability requirements for PRDs (may involve liaison with TC58/SC2) • Localized vs. engulfing fires • Test specific combinations of cylinders and PRDs • Establish general capabilities of cylinder to withstand fire, and choose PRDs that

ensure safe venting in a fire

Results to be published in an ISO Technical Report

31

New Work Item Proposals for WG24:

Cyclic fatigue of fibers and metal liners Evaluate fatigue cycles required by application

• Transportable • Stationary • Vehicle

Collect test data on cyclic fatigue of fibers • Carbon, aramid, glass • Influence of laminate construction • Influence of resin • Pressure range and mean pressure

Create Goodman diagram or equivalent for fiber fatigue if required • Evaluate ability to accurately represent fatigue limits

Evaluate models for accurately combining fatigue cycles • Summation of cubes of stress ratio • Miners Rule, and with what factor on the sum • Other methods

Recommend qualification test requirements to demonstrate capability Determine stress ratios Review issues with calculating and measuring stresses in Type 2, Type 3, and Type 4 cylinders Review available means for analyzing cylinders and related accuracy Review available means for measuring strains and related accuracy Recommend standard approaches for analysis and measurement, and means to verify and validate Demonstrate recommended methods for calculating and measuring, and demonstrate verification and validation

32

document: iso/tc 58/sc 3 n 1435 - home - ngv italy

Documents