High-voltage switchgear and controlgear - Part 303: Use and handling of sulphur hexafluoride (SF6)

Superseded by EN 62271-4:2013

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 303: Gebrauch von und Umgang mit Schwefelhexafluorid (SF6)

Appareillage à haute tension - Partie 303: Utilisation et manipulation de l'hexafluorure de soufre (SF6)

Visokonapetostne stikalne in krmilne naprave - 303. del: Uporaba žveplovega heksafluorida (SF6) in ravnanje z njim (IEC/TR 62271-303:2008)

General Information

Status
Withdrawn
Publication Date
02-Sep-2009
Current Stage
6060 - Document made available
Start Date
03-Sep-2009
Due Date
03-Oct-2009
Completion Date
03-Sep-2009

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SLOVENSKI STANDARD
SIST-TP CLC/TR 62271-303:2009
01-november-2009
Visokonapetostne stikalne in krmilne naprave - 303. del: Uporaba žveplovega
heksafluorida (SF6) in ravnanje z njim (IEC/TR 62271-303:2008)
High-voltage switchgear and controlgear - Part 303: Use and handling of sulphur
hexafluoride (SF6) (IEC/TR 62271-303:2008)

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 303: Gebrauch von und Umgang

mit Schwefelhexafluorid (SF6) (IEC/TR 62271-303:2008)

Appareillage à haute tension - Partie 303: Utilisation et manipulation de l'hexafluorure de

soufre (SF6) (CEI/TR 62271-303:2008)
Ta slovenski standard je istoveten z: CLC/TR 62271-303:2009
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST-TP CLC/TR 62271-303:2009 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CLC/TR 62271-303:2009
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SIST-TP CLC/TR 62271-303:2009
TECHNICAL REPORT
CLC/TR 62271-303
RAPPORT TECHNIQUE
September 2009
TECHNISCHER BERICHT
ICS 29.130.10
English version
High-voltage switchgear and controlgear -
Part 303: Use and handling of sulphur hexafluoride (SF )
(IEC/TR 62271-303:2008)
Appareillage à haute tension - Hochspannungs-Schaltgeräte
Partie 303: Utilisation et manipulation und -Schaltanlagen -
de l'hexafluorure de soufre (SF ) Teil 303: Gebrauch von und Umgang
(CEI/TR 62271-303:2008) mit Schwefelhexafluorid (SF )
(IEC/TR 62271-303:2008)
This Technical Report was approved by CENELEC on 2009-07-03.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. CLC/TR 62271-303:2009 E
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SIST-TP CLC/TR 62271-303:2009
CLC/TR 62271-303:2009 - 2 -
Foreword

The text of the Technical Report IEC/TR 62271-303:2008, prepared by SC 17A, High-voltage

switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was circulated for voting in

accordance with the Internal Regulations, Part 2, Subclause 11.4.3.3 (simple majority) and was

approved by CENELEC as CLC/TR 62271-303 on 2009-07-03.
Annex ZA has been added by CENELEC.
__________
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SIST-TP CLC/TR 62271-303:2009
- 3 - CLC/TR 62271-303:2009
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For

dated references, only the edition cited applies. For undated references, the latest edition of the

referenced document (including any amendments) applies.

NOTE Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-441 - -
- International Electrotechnical Vocabu-
lary (IEV) -
Chapter 441: Switchgear, controlgear
and fuses
1) 2)
IEC 60376 - Specification of technical grade sulfur EN 60376 2005
hexafluoride (SF ) for use in electrical
equipment
1) 2)
IEC 60480 - Guidelines for the checking and treat- EN 60480 2004
ment of sulphur hexafluoride (SF )
taken from electrical equipment and
specification for its re-use
1) 2)
IEC 62271-1 - High-voltage switchgear and EN 62271-1 2008
controlgear -
Part 1: Common specifications
1) 2)
IEC 62271-100 - High-voltage switchgear and EN 62271-100 2009
controlgear -
Part 100: Alternating current
circuit-breakers
———————
Undated reference.
Valid edition at time of issue.
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SIST-TP CLC/TR 62271-303:2009
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SIST-TP CLC/TR 62271-303:2009
IEC/TR 62271-303
Edition 1.0 2008-07
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
High-voltage switchgear and controlgear –
Part 303: Use and handling of sulphur hexafluoride (SF )
Appareillage à haute tension –
Partie 303: Utilisation et manipulation de l’hexafluorure de soufre (SF )
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 29.130.10 ISBN 2-8318-9915-X
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST-TP CLC/TR 62271-303:2009
– 2 – TR 62271-303 © IEC:2008
CONTENTS

FOREWORD...........................................................................................................................5

INTRODUCTION.....................................................................................................................7

1 Scope...............................................................................................................................8

2 Normative references .......................................................................................................8

3 Terms and definitions .......................................................................................................8

4 Storage and transportation of SF ..................................................................................11

4.1 Storage of containers filled with SF ......................................................................11

4.2 Transportation of containers filled with SF ...........................................................13

4.3 Storage and transportation of electric power equipment containing SF .................14

4.4 Responsibilities .....................................................................................................14

5 Safety and first aid .........................................................................................................14

5.1 General safety rules ..............................................................................................14

5.1.1 Protection of personnel..............................................................................15

5.1.2 Handling of contaminated safety equipment and tools ...............................16

5.1.3 Pressurised equipment and tools or measuring devices.............................17

5.1.4 Personal safety and protective equipment .................................................17

5.1.5 Facilities and services ...............................................................................18

5.2 Additional safety measures in case of abnormal release of SF due to

external fire or internal arc fault.............................................................................18

5.3 First aid equipment and treatment .........................................................................19

5.3.1 Irritation of the skin....................................................................................19

5.3.2 Irritation of the eyes...................................................................................19

5.3.3 Breathing difficulty.....................................................................................20

6 Training and certification ................................................................................................20

6.1 General .................................................................................................................20

6.2 Training modules...................................................................................................20

6.2.1 Module A – Awareness ..............................................................................21

6.2.2 Module B1 – Maintenance not implying gas recovery.................................21

6.2.3 Module B2 – Installation and commissioning..............................................22

6.2.4 Module C1 – Maintenance implying gas recovery ......................................22

6.2.5 Module C2 – Decommissioning of electric power equipment at the

end-of-life..................................................................................................23

6.3 Certification...........................................................................................................23

7 SF handling during installation and commissioning .......................................................23

7.1 Evacuation, filling and checking the SF quality after filling ...................................23

7.2 Topping-up of SF pre-filled compartments to the rated pressure/density ..............25

7.3 Filling sealed pressure systems.............................................................................27

8 SF handling during normal service life ..........................................................................27

8.1 Re-filling of SF to the nominal pressure/density ...................................................27

8.2 Checking the SF quality .......................................................................................28

8.2.1 Measurement of the SF quality with portable equipment...........................29

8.2.2 Sampling and shipment of SF for off-site analysis ....................................29

9 SF recovering and reclaiming during maintenance........................................................30

9.1 Recovery and reclaiming of SF from any compartment of controlled and/or
............30
closed pressure systems containing non-arced and/or normally arced SF
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TR 62271-303 © IEC:2008 – 3 –
9.2 Recovery and reclaiming from any compartment of controlled and/or closed

pressure systems containing heavily arced SF .....................................................32

10 Dismantling of SF electric power equipment at the end-of-life .......................................34

10.1 End-of-life of controlled and/or closed pressure systems .......................................35

10.2 End-of-life of sealed pressure systems ..................................................................35

10.3 Recovery and reclaiming of SF at the end-of-life of sealed pressure systems ......36

10.4 Dismantling of electric power equipment at the end-of-life .....................................38

10.5 By-products at the end-of-life ................................................................................39

11 Description of SF handling equipment...........................................................................40

11.1 Reclaimer..............................................................................................................40

11.1.1 External and internal pre-filters..................................................................41

11.1.2 Filters ........................................................................................................41

11.1.3 Vacuum pump ...........................................................................................42

11.1.4 Main and auxiliary compressors.................................................................43

11.1.5 External and internal gas storage containers .............................................43

11.1.6 Evaporator and gas storage container heater ............................................43

11.1.7 Gas piping and pipe junctions....................................................................43

11.1.8 Control instruments ...................................................................................43

11.1.9 Safety valves.............................................................................................44

11.2 Flexible hose connections .....................................................................................44

11.3 Portable devices for gas measurement..................................................................44

11.3.1 Dew point meter ........................................................................................44

11.3.2 SF percentage measuring device.............................................................45

11.3.3 Reaction tubes sensitive to SO ................................................................45

11.3.4 Portable SF detectors ..............................................................................45

11.3.5 Alarm system SF detectors ......................................................................46

11.4 Cylinder for gas samples .......................................................................................46

Annex A (informative) Sulphur hexafluoride .........................................................................47

Annex B (informative) Environmental effects of SF .............................................................51

Annex C (informative) SF by-products ................................................................................54

Annex D (informative) Potential effects on health of SF by-products...................................57

Bibliography..........................................................................................................................76

Figure 1 – Commissioning or re-commissioning of SF compartments ..................................24

Figure 2 – Topping-up of SF pre-filled compartments to the rated pressure/density.............26

Figure 3 – SF re-filling to the nominal pressure/density .......................................................28

Figure 4 – Checking the SF quality on-site ..........................................................................29

Figure 5 – SF sampling and shipment .................................................................................30

Figure 6 – Recovering and reclaiming from any compartment of controlled and/or

closed pressure systems containing non-arced and/or normally arced SF ...........................31

Figure 7 – Recovering and reclaiming from any compartment of controlled and/or

closed pressure systems containing heavily arced SF .........................................................33

Figure 8 – End-of-life of controlled and/or closed pressure systems......................................35

Figure 9 – End-of-life of sealed pressure systems.................................................................36

Figure 10 – SF recovery and reclaiming at the end-of-life of sealed pressure systems ........37

Figure 11 – Dismantling of electric power equipment ............................................................39

Figure 12 – General purpose reclaimer .................................................................................41

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Figure A.1 – Pressure/temperature/density characteristics for SF [9]...................................48

Table 1 – Methods for storage of SF ...................................................................................12

Table 2 – Container types and labelling required for storage and transportation of SF .........13

Table 3 – International regulations for shipment of SF .........................................................14

Table 4 – Measures when working with SF electric power equipment ..................................15

Table 5 – Safety measures when opening and/or accessing gas compartments ....................16

Table 6 – Neutralising solutions ............................................................................................17

Table 7 – Additional safety measures ...................................................................................19

Table 8 – Commissioning or re-commissioning of SF compartments....................................25

Table 9 – Topping-up of SF pre-filled compartments to the rated pressure/density ..............27

Table 10 – SF re-filling to the nominal pressure/density ......................................................28

Table 11 – Checking the SF quality on-site .........................................................................29

Table 12 – SF sampling and shipment.................................................................................30

Table 13 – Recovering and reclaiming from any compartment of controlled and/or

closed pressure systems containing non-arced and/or normally arced SF ...........................32

Table 14 – Recovering and reclaiming from any compartment of controlled and/or

closed pressure systems containing heavily arced SF .........................................................34

Table 15 – SF recovery at the end-of-life of sealed pressure systems .................................38

Table 16 – Expected SF characteristics and quantity of by-products ...................................40

Table 17 – Typical filter types used during SF reclaiming ....................................................42

Table 18 – Gas measuring devices .......................................................................................44

Table A.1 – Main chemical characteristics of SF [9].............................................................47

Table A.2 – Main physical characteristics of SF [9]..............................................................49

Table A.3 – Main electrical characteristics of SF [9] ............................................................49

Table D.1 – TLVs for SOF , SO , HF, and S F ..................................................................60

2 2 2 10

Table D.2 – Results of example calculations for leakage situations.......................................63

Table D.3 – Results for leakage situations taking account of SOF hydrolysis ......................64

Table D.4 – Sample calculation of S F concentration for partial discharges .......................65

2 10

Table D.5 – Sample calculation of S F concentration for corona discharges ......................66

2 10

Table D.6 – Sample calculation of S F concentration for disconnector sparking.................67

2 10

Table D.7 – Sample calculation of SOF concentrations for internal fault situations ..............68

Table D.8 – Switchgear volume and filling pressure ..............................................................71

Table D.9 – Arc energies for interruptions.............................................................................72

Table D.10 – Arc energies for internal faults .........................................................................72

Table D.11 – SOF production rates .....................................................................................73

Table D.12 – Quantities of SOF formed ...............................................................................73

Table D.13 – SF leakage rates ............................................................................................73

Table D.14 – SOF leakage rates .........................................................................................74

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SIST-TP CLC/TR 62271-303:2009
TR 62271-303 © IEC:2008 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 303: Use and handling of sulphur hexafluoride (SF )
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and

non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates

closely with the International Organization for Standardization (ISO) in accordance with conditions determined

by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication should be clearly indicated

in the latter.

5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

6) All users should ensure that they have the latest edition of this publication.

7) No liability should attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC should not be held responsible for identifying any or all such patent rights.

The main task of IEC technical committees is to prepare International Standards. However, a

technical committee may propose the publication of a technical report when it has collected

data of a different kind from that which is normally published as an International Standard, for

example "state of the art".

IEC 62271-303, which is a technical report, has been prepared by subcommittee 17A:

High-voltage switchgear and controlgear, of IEC technical committee 17: Switchgear and

controlgear.

This first edition of IEC/TR 62271-303 cancels and replaces the first edition of IEC 61634

published in1995. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition.

IEC 62271-303 is a major revision of the old IEC 61634. The former sections of IEC 61634

are removed and replaced by the chapters of the CIGRE brochure n. 276.
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SIST-TP CLC/TR 62271-303:2009
– 6 – TR 62271-303 © IEC:2008

IEC 61634 was issued in 1995 when the focus was on safety. In 2008, safety is a very well

known and established concept and the focus is nowadays on the environmental compatibility.

SF must be kept in a closed cycle and any intentional release must be forbidden. The

implementation of the SF reuse concept suggested in the CIGRE brochure was updated with

the most recent information. Today SF can be recovered and reclaimed for either being

reused on-site or given back to the gas supplier and reused as raw material for the production

of "technical grade SF ". Detailed procedures for appropriate SF handling are given together

6 6
with the description of the state-of-the-art equipments and measuring devices.
More in detail, clause by clause:
– The former Section 1 was removed and replaced with Clause 1 "Scope", Clause 2
"Normative references" and Clause 3 “ Terms and Definitions”.

– Clause 4 "Storage and transportation of SF ", Clause 5 "Safety and first aid", Clause 6

"Training and certification", and Clause 11 "Description of SF handling equipment" were

taken from the CIGRE brochure and their content was revised.

– Clause 7 " SF handling during installation and commissioning", Clause 8 " SF handling

6 6

during normal service life", Clause 9 " SF recovery and reclaiming during maintenance",

and Clause 10 "Dismantling of SF electric power equipment at the end-of-life" were taken

from the CIGRE brochure, their content was revised and replaces the former sections 2, 3,

4, 5, and 6.
– The former Annexes A, B, C, and D were revised while the Annexes E and F were
dropped. The Bibliography replaces the former Annex G.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
17A/813/DTR 17A/817/RVC

Full information on the voting for the approval of this technical report can be found in the

report on voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of IEC 62271 series, under the general title High-voltage switchgear and

controlgear can be found on the IEC website.

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication. At this date, the publication will be

• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST-TP CLC/TR 62271-303:2009
TR 62271-303 © IEC:2008 – 7 –
INTRODUCTION

SF technology is used in switchgear and controlgear, for more than 30 years. Its application

is mainly in electric power equipment for rated voltages exceeding 1 kV up to the highest

rated voltages for which switchgear and controlgear are manufactured. It is estimated that

several millions of the different types of SF -filled units are currently in service.

Three methods for gas containment are technically available, according to IEC 62271-1:

• controlled pressure system;

NOTE 1 Controlled pressure systems are no longer used for new equipment, because of the unacceptable

leakage rate (see IEC 62271-203).
• closed pressure system: modern high-voltage electric power equipments. The

standardized values for leakage rates are 0,5 % and 1 % per year and per gas-filled

compartment;

• sealed pressure system: modern medium-voltage electric power equipments (commercially

designated as “sealed for life products” or “hermetically sealed systems”). The tightness of

sealed pressure systems is specified by their expected operating life. The expected operating

life with regard to leakage performance is specified by the manufacturer. Preferred values

are 20, 30 and 40 years.

NOTE 2 To fulfil the expected operating life requirement the leakage rate of the SF sealed pressure systems is

considered to be less than 0,1 % per year.

The long experience with the use of SF in switchgear and controlgear evidences that a

certain number of elementary precautions and procedures should be adopted in order to

achieve operational, safety at work and environmental benefits such as:
• safe operation of the equipment;
• optimisation of resources and tools required;
• minimisation of out-of-service time for equipment;
• standard training of personnel handling SF ;

• reduction of the amount of gas released during handling operations down to the functional

physical limit;
• avoidance of any deliberate release, for example flushing to the atmosphere;

• reduction of SF losses and emissions during commissioning, service, operation and

end-of-life treatment to a minimum.

Recently, the latest practical recommendations on the use of SF technology applied to

switchgear and controlgear have been published by WG B3.02 of CIGRE Study Committee B3

[1] . This information is used to revise IEC 61634 into the present technical report.

—————————
Figures in square brackets refer to the Bibliography.
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HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 303: Use and handling of sulphur hexafluoride (SF )
1 Scope

The scope of this technical report is to address the procedures for safe and environmental

compatible handling of SF during installation, commissioning, normal and abnormal

operations, disposal at the end-of-life of high-voltage switchgear and controlgear. Storage and

transp
...

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