36B/249/RM For IEC use only 2005-01-07

INTERNATIONAL ELECTROTECHNICAL COMMISSION TECHNICAL COMMITTEE 36: INSULATORS SUB-COMMITTEE 36B: INSULATORS FOR OVERHEAD LINES Unconfirmed Minutes of the meeting held in WASHINGTON on 8th December 2004. Present: Chairman : Secretary :

Ray Houlgate (UK) Clive Lumb (FR)

COUNTRY AUSTRALIA (P)

DELEGATES Stephen Hodgkinson Brian Lester

CANADA (P)

Richard Martin Claude De Tourreil

FRANCE (P)

Robert Jeanjean Laurent Pargamin

GERMANY (P)

Jens Seifert Josef Kindersberger

IRELAND (P)

Timothy Condon

JAPAN (P)

Yoshihiro Suzuki

RUSSIAN Fed. (P)

Michail Yarmarkin

SWEDEN (P)

Willy Lord Robert Axelsson Lars Johansson

SWITZERLAND (P)

Bernhard Staub

UNITED KINGDOM (P)

John Graham

USA (P)

Allen Bernstorf Robert Hill

OBSERVERS

Anthony Baker Tom Pinkham Geoff Powell

11 Countries, all « P »

2 Officers, 18 Delegates, 3 Observers

Absent: The following 16 P member countries did not attend: Austria, China, Czech Rep., Finland, India, Italy, Korea (Rep. of), Netherlands, Poland, Portugal, Romania, Saudi Arabia, Serbia & Montenegro, South Africa, Spain, Ukraine.

2

36B/249/RM

CONTENTS 1.

Opening of the meeting........................................................................................................................ 3

2.

Approval of the Agenda........................................................................................................................ 3

3.

To note the approval of the minutes of the last meeting held in Beijing (China) on Friday 25th October 2002 (36B/221/RM). ............................................................................................................... 4

4.

News from Central Office ..................................................................................................................... 4

5.

Report on the activity of the Committee and WG/MT since the last meeting ...................................... 4 5.1 5.2

6.

Secretary's report............................................................................................................................ 4 Reports on current Projects ............................................................................................................ 6 Result of voting on the FDIS on IEC 61211 Ed1 : Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1 000 V - Impulse puncture testing in air ........... 7

7.

Discussion of the comments on the CD of IEC 61467, Ed.1: Insulators for overhead lines with a nominal voltage above 1000V - AC power arc tests in insulator sets.................................................. 7

8.

Discussion of the comments on CD of IEC 61109, Ed2: Composite suspension and tension insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V. definitions, test methods and acceptance criteria. ........................................................................................................ 8

9.

Discussion of the comments on CD of IEC 61952, Ed.2: Composite line post insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V definitions, test methods and acceptance criteria ............................................................................................................................... 8

10.

Summary of the status and progress of other projects ........................................................................ 8

11.

Review of the points of the TC 36 SPG and SPS relevant to SC 36B................................................. 9

11.1 Planned current and future work..................................................................................................... 9 11.2 New subjects................................................................................................................................... 9 11.3 Other points..................................................................................................................................... 9 12. Revision of the programme of work, approval of the maintenance plan to be submitted to TC 36... 10 13.

Any other business............................................................................................................................. 10

14.

Date and place of the next meeting ................................................................................................... 10

15.

Close of the meeting .......................................................................................................................... 10

3

36B/249/RM

DECISIONS N°

Project/ Publication

Decisions (all unanimous)

1

61467 Ed. 1

Approved for circulation as a CDV with agreed changes as shown in 36B/234A/CC. CDV – 2005-06

2

61109 Ed. 2

Approved for circulation as a CDV with agreed changes as shown in 36B/241A/CC. CDV – 2005-06

3

61952 Ed. 2

Approved for circulation as a CDV with agreed changes as shown in 36B/238A/CC. CDV – 2005-06

4

60120 Ed. 3

The Italian proposal for revision in 36B/237/INF was not accepted.

5

60305 Ed. 4.0

New review date 2008, MRD 2011

6

60372 Amd.2 Ed. 3.0

It was decided to disband MT11

7

60383-1 Ed. 4.0 New review date 2010, MRD 2015 60383-2 Ed. 1.0 Issue combined MCR for both parts proposing confirmation of standard and amendment for dye test

8

60575 TR3 Ed. 2.0

It was decided to suspend any work on 60575 until the CIGRE B2 report is published

9

61466-1 Ed.1 61466-2 am 1

MT10 instructed to bring these projects to full priority and to issue MCR in 1st Quarter of 2005

10

Next meeting

Hold in conjunction with TC 36 in approximately 2 years time OTHER RESULTS

1.

N°

Subject

Result

1

Maintenance cycles

All maintenance review and result dates were inspected and confirmed or revised

2

IEC 61109 and IEC 61952

Maintenance dates of these projects will be aligned with those of IEC 62217 (currently AFDIS by TC 36)

3

TC 36 SPS

Modifications and additions are proposed to TC 36

4

Programme of work

SC 36B Programme of work was updated

Opening of the meeting

The Chairman welcomed the delegates to the 29th meeting of SC 36B and thanked the USA National Committee and NEMA for their kind invitation, excellent meeting facilities and warm hospitality. He expressed special thanks to Scott Choinski and Allen Bernstorf for their hard work organising the meetings for SC 36B and the other Committees and Working Groups. The chief delegates were asked to identify themselves and fill in the attendance list. The chief delegates are underlined. Finally the Chairman announced the sad and untimely death of Danilo Perin who had been an active delegate to SC 36B and a valued member of various working groups over the years. The meeting was also informed of the death of the Vladimir Pogostin who had been planning to attend as a Russian delegate. A short period of silence was observed.

2.

Approval of the Agenda

The draft Agenda 36/236A/DA was approved. The Secretary pointed out an error in numbering for Item 13 and onwards which was corrected

4

3.

36B/249/RM

To note the approval of the minutes of the last meeting held in Beijing (China) on Friday 25th October 2002 (36B/221/RM).

The Secretary announced that no written comments had been received within two months of circulation of the minutes of the previous meeting held in Beijing on Friday 25th October 2002 (36B/221/RM) and that they were therefore approved with no changes. No comments were forthcoming from the delegates.

4.

News from Central Office

The Chairman announced that he had received an e-mail from Pierre Amiguet announcing that he was retiring in December 2004. On behalf of SC 36B he expressed best wishes to Pierre and thanks for his valuable support over the past two years. The Sub-Committee looks forward to working with Peter Lanctot who has taken over from Pierre Amiguet. The Secretary underlined some recent changes in working procedure:

5. 5.1

•

Secretaries and WG group convenors are no longer responsible for membership lists, each National Committee now manages its participation via the IEC experts database. Similarly, delegates to meetings are designated by the same system. All delegates and WG/MT/PT members are urged to make sure that their National Committee keeps the database up to date.

•

Meeting documents are theoretically no longer allowed; this explains the “INF” reference of the SC 36B meeting documents, which was the only way to make them available in electronic form via the meeting document pack. The situation will no doubt be clarified before the next meeting.

Report on the activity of the Committee and WG/MT since the last meeting Secretary's report

The Secretary briefly presented his report as follows: 5.1.1 Publications Issued IEC 60372-am2 Ed. 3.0

REFERENCE

TITLE Amendment 2 - Locking devices for ball and socket couplings of string insulator units - Dimensions and tests

IEC 61211 Ed. 2.0

Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1 000 V - Impulse puncture testing in air

Date 2003-05-23 2004-11-17

5.1.2 Documents circulated since the last meeting REFERENCE

36B/218/DC 36B/220/INF 36B/221/RM 36B/222/MT 36B/224/MT 36B/228/MT 36B/228A/MT 36B/236/DA 36B/240/MT 36B/243/PW

TITLE Administrative documents IEC 60797: Residual strength tests - Call for renewal of membership of Maintenance Team 12 Publication/Project Status Report (PSR) resulting from the SC 36B meeting held in Beijing on 25th October 2002 Unconfirmed Minutes of the meeting of SC 36B held in BEIJING on 25th October 2002 SC 36B/MT 12: Maintenance of IEC 60797 - Residual Strength tests: Membership list Membership of Maintenance Team 10: Maintenance of standards for composite insulators for overhead lines MT 14: Maintenance of IEC 61467 - A.C. Power arc tests - Membership list REVISED MT 14: Maintenance of IEC 61467 - A.C. Power arc tests Revised membership list Draft agenda for the SC 36B meeting to be held in Washington (USA) on xx December 2004 SC 36B: Revised membership of Maintenance Team 10: Standards for composite insulators for overhead lines Programme of work of the subcommittee as recorded by the IEC Central Office in its database

Date

2002-11-15 2002-11-15 2002-11-15 2003-02-21 2003-03-21 2003-07-25 2004-01-23 2004-07-23 2004-09-17 2004-11-05

5 REFERENCE 36B/236A/DA

36B/249/RM TITLE

Date

36B/244-247/INF

Revised Draft agenda for the SC 36B meeting to be held in Washington th (USA) on 8 December 2004 Washington Meeting documents

2004-11-26

36B/237/INF

Maintenance of Publication 60120 Italian proposal on standard IEC 60120 Ed. 3.0 (1984-01)

2004-07-23

36B/217/RVC 36B/223/FDIS 36B/226/RVD

36B/225/MCR 36B/233/CD 36B/241/CC

36B/229/CDV 36B/229A/CDV 36B/235/RVC 36B/239/FDIS 36B/242/RVD

36B/219/MCR

36B/227/CC 36B/227A/CC 36B/230/CD 36B/234/CC

36B/231/MCR

Maintenance of Publication 60372 Result of voting on 36B/197/CDV: Amendment 2 to IEC 60372 Ed.3 Locking devices for ball and socket couplings of string insulators units Dimensions and tests Amendment 2 to IEC 60372 Ed.3: Locking devices for ball and socket couplings of string insulator units - Dimensions and tests Report of Voting on 36B/223/FDIS: Amendment 2 to IEC 60372, Ed.3: Locking devices for ball and socket couplings of string insulator units Dimensions and tests Maintenance of Publication 61109 Maintenance cycle report on IEC 61109: Composite insulators for a.c. overhead lines with a nominal voltage greater than 1000 V - Definitions, test methods and acceptance criteria IEC 61109, Ed2: Composite suspension and tension insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V. definitions, test methods and acceptance criteria Compilation of comments on 36B/233/CD: IEC 61109, Ed 2: Composite suspension and tension insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V. Definitions, test methods and acceptance criteria Maintenance of Publication 61211 IEC 61211, Ed.1: Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1 000 V - Impulse puncture testing in air IEC 61211, Ed.1: Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1 000 V - Impulse puncture testing in air Result of voting on 36B/229A/CDV: IEC 61211, Ed.1: Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1 000 V - Impulse puncture testing in air IEC 61211, Ed.1: Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1000 V - Impulse puncture testing in air Result of Voting on 36B/239/FDIS: IEC 61211, Ed.1: Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1000 V - Impulse puncture testing in air Maintenance of Publication 61325 Maintenance cycle report on IEC 61325: Insulators for overhead lines with a nominal voltage above 1 000 V - Ceramic MCR or glass insulator units for d.c. systems - definitions, test methods and acceptance criteria Maintenance of Publication 61467 Compilation of comments on 36B/215/CD: IEC 61467, Ed.1: Insulators for overhead lines with a nominal voltage above 1000V - AC power arc tests in insulator sets REVISED Compilation of comments on 36B/215/CD: IEC 61467, Ed.1: Insulators for overhead lines with a nominal voltage above 1000 V - AC power arc tests in insulator sets IEC 61467, Ed 2: Insulators for overhead lines with a nominal voltage above 1 000 V - AC power arc tests Compilation of comments on 36B/230/CD: IEC 61467, Ed 1: Insulators for overhead lines with a nominal voltage above 1 000 V - AC power arc tests Maintenance of Publication 61952 Maintenance cycle report on 61952, Ed1: Composite line post insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V : definitions, test methods and acceptance criteria (REVISION)

2004-11-25

2002-11-01 2003-02-21 2003-05-02

2003-03-21 2004-04-16 2004-09-17

2004-01-23 2004-02-13 2004-07-16 2004-08-20 2004-10-29

2002-11-12

2003-05-09 2004-02-06 2004-02-06 2004-06-11

2004-03-19

6 REFERENCE 36B/232/CD 36B/238/CC

36B/249/RM TITLE

Date

IEC 61952, Ed.2: Composite line post insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V definitions, test methods and acceptance criteria Compilation of comments on 36B/232/CD: IEC 61952, Ed 2: Composite line post insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria

2004-03-19 2004-07-30

5.1.3 List of P and O Members of SC 36B As of November 2004, the status of the member countries of SC 36B is as follows: P Members (Participating) - 27 (∆=0, +2 Korea (Rep), Serbia; – 2 Denmark, Yugoslavia) Australia Austria Finland France Italy Japan Portugal Romania Serbia & Montenegro Switzerland Ukraine

Canada Germany Korea (Rep of) Russian Fed. South Africa United Kingdom

China India Netherlands Saudi Arabia Spain USA

Czech Rep. Ireland Poland Sweden

O Members (Observers) - 13 - (∆=0 + Denmark; – Korea (Rep)) Belgium Indonesia Norway

Bulgaria Israel Slovakia

Denmark Malaysia Thailand

Greece Mexico

Hungary N. Zealand

No comments were arising from the Secretary’s report which was approved. 5.2

Reports on current projects

The Secretary presented the reports and status of the Maintenance Teams and projects of SC 36B. 5.2.1 MT10 – Projects 61466, 61109, 61952 – C. Lumb (Interim Convenor) MT 10 has met four times since its reactivation in Beijing. Meetings were held in Nuremberg in February and October 2003, in Stellenbosch in March 2004 and in Mannheim in September 2004. In order to optimise attendance and economy, meetings were held “back to back” with 36WG11 which has many members in common. Clive Lumb is still the interim Convenor, but the work load is efficiently distributed between the three project leaders.

5.2.1.1 MT10 Project 61109 (Jens Seifert) MT10 was able to prepare a draft revision of IEC 61109 which was circulated, along with the appropriate MCR, as 36B/233/CD. At the last meeting the compiled comments on this draft were studied and observations were prepared to help the discussion of the document at the SC 36B meeting in Washington.

5.2.1.2 MT10 Project 61952 (Claude DeTourreil) At the October 2003 meeting of MT 36B-10 in Nürnberg, C. LUMB and C. de TOURREIL accepted to prepare the revised version of IEC 61952. This was accomplished during private meetings that took place in early 2004. This revision was necessary to harmonize the document with the new IEC 62217 (Common Clauses). All the tests now listed in 62217 have been removed from 61952. The revised version was discussed during the MT 36B-10 meeting that took place in Stellenbosch, ZA in March 2004. The document was then issued by SC 36B as 36B/232/CD for comments by National Committees. The compiled comments prepared by C. LUMB were reviewed by MT 36B-10 during the Mannheim meeting that took place in September 2004 and observations were prepared to help the discussion of the document at the SC 36B meeting in Washington.

5.2.1.3 MT10 Project 61466 (Stephen Hodgkinson and Jens Seifert) This part of the MT10 task is currently on hold, having been designated as low priority until the revisions of IEC 61109 and 61952 were well advanced. The subject is being monitored by S. Hodgkinson (AU) and J. Seifert (DE). It was decided to prepare a questionnaire for members to distribute in their countries on the section length of some representative insulators with different fittings (145kV, 16 & 31 mm/kV, 120 & 210 kN). This will be

7

36B/249/RM

circulated by the end of 2004. All users and manufacturers present at the SC 36B meeting in Washington were requested to send contact details of local manufacturers to the Secretary [email protected].

5.2.2 MT11 – Project 60372 – Locking devices – C. Lumb (On behalf of PL) Project 60372 was prepared under the leadership of Mr. Billac (France) and was published in May 2003. Since Mr Billac has since changed functions and no further revision seems necessary in the near future, it is proposed to disband MT11 (See item 10). The Chairman expressed his thanks to Mr Billac.

5.2.3 MT12 – Project 60797 Residual strength (being reactivated, Convenor C. Lumb) This project is currently at the O stage, however resources have become available and a meeting of MT12 was held in Paris in September 2004. At this meeting a compromise was reached where the “normal” criteria of 65% for residual strength could be extended to 70% for cases where compliance with IEC 60826 (Design criteria of overhead transmission lines) was required. Currently the experts are studying the influence of the temperature cycle test on the severity of the residual strength test in order to determine if this pre-stress is necessary. An MCR and CD are expected during the first quarter of 2005.

5.2.4 Project 61211 Puncture tests (Convenor M. Aro) MT13 has not needed a meeting since 2002. The minor modifications resulting from the vote on 36B/229/CDV were all dealt with by e-mail between the members. It is to be noted that the MT has been very efficient; the first meeting for the revision was held in February 2002 and the Publication issued in November 2004.

5.2.5 Project 61211 Project 61467 Power Arc tests (Convenor C. Lumb) A meeting of MT14 was held in Vichy in January 2004 to study the compiled comments and the comments from the members on the draft 36B/215/CD in order to prepare a 2CD. This 2CD was circulated in February 2004 as 36B/230/CD. The compiled comments were studied by e-mail and the Secretary’s observations were approved by the MT for discussion at the Washington meeting.

5.2.6 Project 60575 (0 Stage) – C. Lumb (PL) This project is still at the 0 stage due to problems converting old figures for the electronic version. Since the last meeting, the information behind the figures has been included in a draft CIGRE publication on the mechanical strength of “old” insulators being prepared by WG B2.03. It is proposed to wait until this work has been published so that the IEC report can refer to it, hence avoiding the need to convert the figures. (This proposal was accepted under Item 10).

No other subjects arose from these reports. The Chairman thanked the Secretary for his presentation and extended special thanks to the Project Leaders for their valuable contribution to the work of SC 36B, their function becoming increasingly important as MTs deal with several projects at once.

6.

Result of voting on the FDIS on IEC 61211 Ed1 : Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1 000 V - Impulse puncture testing in air

The Secretary presented the results in 36B/242/RVD: 24 voting, 18 “P” members in favour, 1 against. Comments were received from Italy (editorial, adopted) and USA (explaining their negative vote due to their satisfaction with the current test in oil). Publication issued 2004-11.

7.

Discussion of the comments on the CD of IEC 61467, Ed.1: Insulators for overhead lines with a nominal voltage above 1000V - AC power arc tests in insulator sets

The comments in document 36B/234/CC were discussed. The complete discussion is shown in the revised CC 36B/234A/CC which was circulated on 2004-12-10. The following major decisions were made. Subject

Discussion

Table 4

MT14 asked to split the acceptance criteria

Table 4

Residual strength requirement to be the same for sets and short strings, aligned with the SFL multiplier used in IEC 60797 (i.e. 65% or 70% if required for IEC 60826).

Annexe A

Dimension Ls reduced to 1,25m for tests on sets for networks at 90 kV and below

DECISION 1

Approved for circulation as a CDV with agreed changes as shown in 36B/234A/CC.

8 Unanimous

8.

36B/249/RM

CDV – 2005-06

Discussion of the comments on CD of IEC 61109, Ed2: Composite suspension and tension insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V. definitions, test methods and acceptance criteria.

The comments in document 36B/245/INF (36B/241/CC with comments from MT10) were discussed. The discussion is shown in the revised CC 36B/241A/CC which was circulated on 2004-12-10. The following major decisions were made. Subject

Discussion

Introduction

Include statement in the introduction saying that IEC Guide 111 has been followed wherever possible.

MT10

MT 10 asked to study: •

updating the information on brittle fracture in the introduction,

•

Table 1 to be revised to include assembled core load tests on lines 1, 7, 8 and 11 – with note about temperatures,

•

how to make a short sample with fully representative joints/spacers

Hybrid insulators

DE commented that details should be given about which tests are applicable. After discussion it was decided to add a note “under consideration”.

DECISION 2 Unanimous

Approved for circulation as a CDV with agreed changes as shown in 36B/241A/CC. CDV – 2005-06

9.

Discussion of the comments on CD of IEC 61952, Ed.2: Composite line post insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V definitions, test methods and acceptance criteria

The comments in document 36B/246/INF (36B/238/CC with comments from MT10) were discussed. The discussion is shown in the revised CC 36B/238A/CC which was circulated on 2004-12-10. The following major decisions were made. Subject

Discussion

Introduction

NL comment on the need for artificial pollution tests to be passed on to TC 36

MT10

MT 10 asked to study: •

Table 1 to be revised to include assembled core load tests on lines 1, 7, 8 and 12 – with note about temperatures,

•

Rewrite 9.3.1 to specify that it is the initial load direction which shall be perpendicular,

11.4.1

Allowance added for “slow” cantilever test equipment

DECISION 3 Unanimous

Approved for circulation as a CDV with agreed changes as shown in 36B/238A/CC. CDV – 2005-06

10. Summary of the status and progress of other projects The Chairman and Secretary had prepared an updated version of the status document (Project Status Report) 36B/247/INF. The Chairman proposed that each Publication be studied and the entries be revised as necessary. Special attention was paid to those Publications whose review date was due. An Italian proposal for revision of IEC 60120 had been received (36B/237/INF) which was also discussed The main results and decisions arising from this discussion are as follows: Subject

60120 DECISION 4 Unanimous

Result The proposal in 36B/237/INF was not accepted. The reasons are: • Changing the height of the gauge to admit the zinc sleeve could then pass insulators onto which maximum tolerance caps might not fit, • Adapting the gauge by making a cut-out for the zinc sleeve could lead to caps not fitting because of the sleeve, • If the sleeve is necessary for pollution or d.c. reasons, then it is inadvisable to use very

9

36B/249/RM

Subject 60305 DECISION 5 Unanimous 60372 DECISION 6 Unanimous 60383-1 60383-2 DECISION 7 Unanimous

Result short spacing insulators anyway. New review date 2008, MRD 2011 It was decided to disband MT11 New review date 2010, MRD 2015 Issue combined MCR proposing confirmation of standard and amendment for dye test

60575 DECISION 8 Unanimous

It was decided to suspend any work on 60575 until the CIGRE B2 report is published

61109

Align review date and MRD with 62217 when published

61466-1 61466-2 DECISION 9 Unanimous

Brought to full priority MT10 to issue MCR in 1Q 2005

61467

Recommended review date 2015, MRD 2019

61952

Align review date and MRD with 62217 when published

The revised PSR taking into account this discussion and decisions has been communicated to TC 36 who will include it in their revised SPS, it will also be circulated as an INF document.

11. Review of the points of the TC 36 SPG and SPS relevant to SC 36B The documents 36/214/INF, 36/216/DC and 36/224/INF were studied and the relevant points updated as follows: 11.1 Planned current and future work The following modifications were approved: Current: REMOVE

Future: ADD

•

•

Revision of 61466-1 & 2 to include section length, longer insulators and to define preferred fittings (SC 36B high priority)

•

Study of d.c. tracking and erosion tests for composite insulators (TC 36 high priority)

•

Study of artificial pollution tests for composite insulators (TC 36 high priority)

•

Minimum requirements for hybrid polymer insulators (medium priority)

61211 (Published)

Current: MODIFY •

60575 Adapt revision to take into account CIGRE data to be published by B2.

Maintenance cycles See revised PSR to be circulated 11.2 New subjects See “Future ADD” in 11.1 above. 11.3 Other points It was noted by the Secretary that the suggestion of the USA delegate for an incentive to group MT/WG meetings, which was proposed for section B of the TC 36 SPS during the Stockholm meeting, had been successfully adopted by 36B-MT10 and 36-WG11.

10

36B/249/RM

12. Revision of the programme of work, approval of the maintenance plan to be submitted to TC 36 The maintenance cycles were modified as shown the INF document to be circulated and the work programme updated and then approved unanimously. The modified items of the work programme were as follows: Project

Previous Stage

Latest document reference

New Stage

Limit Date

IEC 61109 Ed.2.0

CDM

36B/233/CD

ACDV

05-06

IEC 61467 Ed.1.0

CDM

36B/230/CD

ACDV

05-06

IEC 61952 Ed 2.0

CDM

36B/232/CD

ACDV

05-06

13. Any other business Nothing was tabled.

14. Date and place of the next meeting It was agreed unanimously that SC 36B wished to continue to meet in conjunction with TC 36 and that a time scale of about two years was desirable

DECISION 10

General SC 36B to meet in conjunction with TC 36. (A time scale of about 24 months is desired)

FOR Unanimous 15. Close of the meeting The Chairman repeated his thanks to the USA committee and thanked the delegates for their positive contributions and the Secretary for all his hard work. The Chairman then declared the meeting closed. ______