IEC TR 62271-303:2008

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

IEC/TR 62271-303:2008 addresses the procedures for safe and environmental compatible handling of SF6 during installation, commissioning, normal and abnormal operations, disposal at the end of life of high voltage switchgear and controlgear. Storage and transportation of SF6 are also covered. These procedures should be regarded as minimum requirements to ensure the safety of personnel working with SF6 and to minimize the SF6 emission to the environment. This first edition of IEC/TR 62271-303 cancels and replaces the first edition of IEC 61634 published in 1995. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: IEC/TR 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. 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. SF6 must be kept in a closed cycle and any intentional release must be forbidden. The implementation of the SF6 reuse concept suggested in the CIGRE brochure was updated with the most recent information. Today SF6 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 SF6". Detailed procedures for appropriate SF6 handling are given together with the description of the state-of-the-art equipments and measuring devices.

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

Le CEI/TR 62271-303:2008 a pour objectif de traiter des procédures de manipulation du SF6, en toute sécurité et en toute compatibilité avec l'environnement, au cours de l'installation, de la mise en service, d'un fonctionnement normal et anormal ou de l'élimination en fin de vie des appareillages électriques à haute tension. Le stockage et le transport du SF6 sont également couverts. Il convient de considérer ces procédures comme les exigences minimales nécessaires pour garantir la sécurité du personnel travaillant avec le SF6 et pour réduire au minimum les émissions de SF6 dans l'environnement. Cette première édition de la CEI/TR 62271-303 annule et remplace la première édition de la CEI 61634 publiée en 1995. Cette édition constitue une révision technique. La présente édition inclut les modifications techniques significatives suivantes par rapport à l'édition précédente: La CEI/TR 62271-303 est une révision majeure de la CEI 61634. Les anciennes sections de la CEI 61634 sont supprimées et remplacées par ceux de la brochure technique CIGRE N°276. Dans la CEI 61634, publiée en 1995, l'accent était mis sur l'aspect sécurité. En 2008, l'aspect sécurité est bien connu et établi, l'accent est mis actuellement sur la comptabilité avec l'environnement. Le SF6 doit être conservé dans un cycle fermé et tout rejet intentionnel doit être interdit. Le concept de réutilisation du SF6 suggéré dans la brochure CIGRE a été mis à jour avec les informations les plus récentes. Aujourd'hui le SF6 peut être récupéré et régénéré pour être soit réutilisé sur site ou retransmis au fabricant de gaz pour servir comme élément de base à la production du "SF6 de qualité technique". Les procédures détaillées pour la manipulation du SF6 sont données ainsi que la description de l'état de l'art pour ce qui concerne les équipements et les moyens de mesure.

General Information

• Status: Replaced
• Publication Date: 22-Jul-2008
• ICS: 29.130.10 - High voltage switchgear and controlgear
• Technical Committee: SC 17A - Switching devices
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 26-Aug-2013

Relations

• Replaced By: IEC 62271-4:2013 - High-voltage switchgear and controlgear - Part 4: Handling procedures for sulphur hexafluoride (SF₆) and its mixtures
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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 )
IEC/TR 62271-303:2008
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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
XC
CODE PRIX
ICS 29.130.10 ISBN 2-8318-9915-X
– 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
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
...