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TC 31

Equipment for explosive atmospheres
 
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TC 31 Subcommittee(s) and/or Working Group(s)

Label
Title
Subcommittees
SC 31GIntrinsically-safe apparatus
SC 31JClassification of hazardous areas and installation requirements
SC 31MNon-electrical equipment and protective systems for explosive atmospheres
Working Groups
WG 22Responsible for MT 60079-0, maintenance of IEV 60050.426 and other specific tasks assigned by TC 31
WG 27Electric Machines (motors and generators)
WG 28Dusts
WG 30Equipment process sealing
WG 31Gas/dust hybrid mixtures
WG 32Creepage and clearance distances
WG 37Electrochemical cells and batteries and electrochemical capacitors in equipment for explosive atmospheres
WG 39Adverse service conditions
WG 40Luminaires
WG 42Safety Devices Related to Explosion Risk
WG 43High voltage
WG 47Gc equipment
WG 54Reference point for TC 31 standards as a basic safety publication
Project Teams
PT 60079-44Explosive atmospheres – Personal Competence
PT 60079-45Electrical Ignition Systems for Internal Combustion Engines
PT 60079-46Explosive atmospheres - Equipment assemblies
Maintenance Teams
MT 60079-1Maintenance of IEC 60079-1
MT 60079-2Maintenance of IEC 60079-2
MT 60079-7Maintenance of IEC 60079-7
MT 60079-15Maintenance of IEC 60079-15
MT 60079-18Maintenance of IEC 60079-18
MT 60079-26Maintenance of IEC 60079-26
MT 60079-28Risk of ignition by radiation from optical equipment
MT 60079-29Maintenance of IEC 60079-29 series
MT 60079-30Maintenance for IEC 60079-30-1 and IEC 60079-30-2
MT 60079-31Maintenance of IEC 60079-31
MT 60079-33Maintenance of IEC 60079-33
MT 60079-35Maintenance of IEC 60079-35-1 and IEC 60079-35-2
Joint Working Groups
JWG 29with TC 101 - Electrostatics linked to TC 101
JWG 45Toxic gas detection for workplace atmospheres linked to ISO/TC 146/SC 2
JWG 50JWG 50 standards coordination with IECEx
Advisory Groups
AG 36Chair's Advisory Group
AG 49Portable and personal equipment
AG 55Specific Conditions of Use
Joint Maintenance Teams
JMT 62784Particular requirements for vacuum cleaners and dust extractors providing equipment protection level Dc linked to SC 61J
Editing Group
EG 52Editing Group
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TC 31 Membership

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Argentina
AR
O-Member
Full Member
Australia
AU
P-Member
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Austria
AT
P-Member
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Belgium
BE
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Brazil
BR
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Bulgaria
BG
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Canada
CA
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China
CN
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Croatia
HR
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Czech Republic
CZ
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Denmark
DK
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Egypt
EG
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Finland
FI
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France
FR
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Germany
DE
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Greece
GR
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Hungary
HU
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India
IN
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Indonesia
ID
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Iran
IR
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Ireland
IE
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Israel
IL
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Italy
IT
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Japan
JP
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Kazakhstan
KZ
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Korea, Republic of
KR
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Malaysia
MY
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Mexico
MX
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Netherlands
NL
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New Zealand
NZ
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North Macedonia
MK
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Norway
NO
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Pakistan
PK
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Poland
PL
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Portugal
PT
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Romania
RO
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Russian Federation
RU
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Saudi Arabia
SA
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Serbia
RS
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Singapore
SG
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Slovakia
SK
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Slovenia
SI
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South Africa
ZA
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Spain
ES
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Sweden
SE
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Switzerland
CH
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Thailand
TH
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Turkey
TR
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Ukraine
UA
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United Arab Emirates
AE
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United Kingdom
GB
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United States of America
US
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Facts and figures

Secretariat
United Kingdom
Participating countries
41
Observer Countries
11
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TC 31 Officers

Chair
Mr Martin Thedens (DE)
Term of office : 2026-07

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Vice-Chair
Mr Jason Alexander Wigg (AU)
Term of office : 2023-10

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Vice-Chair
Mr Brad J Zimmermann (US)
Term of office : 2023-10

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Secretary
Mr Mick Maghar (GB)

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IEC Central Office Contacts

Technical Officer
Mr Stephen Dutnall

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Standards Project Administrator
Ms Nadine Andrey

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Editor
Ms Katherine Ogden

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TC 31 Liaisons

Committee
Description
Incoming liaison representative
Outgoing liaison representative
Internal IEC Liaison
TC 2Rotating machineryMr Christian Lehrmann
 Mr Frank Lienesch
TC 18Electrical installations of ships and of mobile and fixed offshore unitsMr Roger Jones
 Mr Roger Jones
SC 22GAdjustable speed electric power drive systems (PDS)  Mr Martial Patra
 Mr Evans Massey
TC 27Industrial electroheating and electromagnetic processingMr Rudolf Pommé
 Mr John Turner
TC 34LightingMr Jens Schütte
 Mr Steffen Alt
SC 61CSafety of refrigeration appliances for household and commercial useMr Greg Relue
 Mr Glen Edwards
SC 65ASystem aspectsMr Hassan El-Sayed
 Mr Otto Walch
TC 72Automatic electrical controlsMr David Delaquila
TC 101ElectrostaticsMr Graham P Ackroyd
TC 105Fuel cell technologiesMr Kazuo Koseki
TC 109Insulation co-ordination for low-voltage equipmentMr Mark Coppler
 Mr Mark Coppler
TC 109/MT 1Principles, requirements and tests for clearances, creepage distances and solid insulation Mr Mark Coppler
SC 121ALow-voltage switchgear and controlgearMr Werner Böser
 Mr Otto Walch
Liaison ISO
ISO/TC 45Rubber and rubber products
ISO/TC 45/SC 1Hoses (rubber and plastics)Mr Mike Rose
Mr Felix-Joahnnes Seidel
ISO/TC 67/SC 8Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries - Arctic operations Mr Alexander Zalogin
ISO/TC 197Hydrogen technologies Mr Giacomo Frigo
Liaison A
IECExIECExMr Mark Coppler
Liaison C
IEEE PCIC P1713IEEE PCIC P1713
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TC 31 Working Groups Liaisons

Working Groups
Description
Organization
Incoming liaison representative
Outgoing liaison representative
Liaison C
MT 60079-7
Maintenance of IEC 60079-7
 IEEE PCIC
Mr Paul Hamer
Mr Paul Hamer