ISA12.04, Instrument Purging for Reduction of Hazardous Area Classification

Scope

The committee shall survey both domestic and international practices of purging and pressurizing apparatus and related matters (such as the effects of corrosion on purged and pressurized enclosures); monitor the development of NFPA 496 and IEC 60079-2 to accomplish the Committee's stated objectives; and promote the use of purging and pressurization disciplines.

Purpose

To summarize current practices for purging and pressurizing electrical enclosures intended for use in hazardous (classified) locations and electrical enclosures containing an internal source of flammable gases or vapors.
To publish standards and practices for the construction, marking, and performance of purged and pressurized enclosures.
To submit proposals, as needed, for revisions to standards and practices outlining the various methods of purging and pressurizing enclosures to prevent ignition of flammable atmospheres (e.g., NFPA 496, IEC 60079).

A Word from the Chairman

Regarding continued work on ISA-12.04.02, the pressurized enclosure standard for Division certification based upon IEC 60079-2, the subcommittee has agreed that equipment built to IEC 60079-2 will meet the requirements of NFPA 496 with the exception of marking, and there does not seem to be a significant reason for continuing work on this document. The subcommittee has begun updating ISA-61241-2 to include IIIA, IIIB and IIIC and on the adoption of IEC 60079-2 Ed. 5.

Rich Masek, ISA12.04 Chairman

ISA Meetings

For information about all upcoming ISA12 meetings, please visit www.ISA12.org.

Related Files

Fall 2006 SP12 Meeting Schedule (Adobe PDF File)
Spring 2006 SP12 Meeting Schedule (Adobe PDF File)
SP12 September 2005 Meeting Schedule (Adobe PDF File)

List of Standards for Committee

Contacts:

Nicholas Abbatiello Information Member Optimation Technology	Richard Allen Alternate Member Honeywell Inc Phone: (215) 641-3189 Fax: (215) 641-3850
Donald Ankele Alternate Member	Michael Baucom Voting Member Bebco Industries Inc Phone: (409) 935-5743 Fax: (409) 938-4189
Eliana Beattie Staff Contact ISA Phone: (919) 990-9228 Fax: (919) 549-8288	David Bishop Voting Member David N Bishop Consultant Phone: (985) 764-9902 Fax: (985) 764-4042
Steve Blais Information Member EGS Electrical Group Phone: (847) 268-6205 Fax: (847) 268-6009	Edward Briesch Voting Member Underwriters Laboratories Inc Phone: (847) 664-3174 Fax: (847) 313-3174
William Brown Information Member Maverick Engineering Phone: (281) 578-1898 Fax: (713) 469-4567	Mark Buettner Information Member Nestle Purina Petcare Phone: (314) 982-4107 Fax: (314) 982-4137
Raymond Cardinal Voting Member Bently Nevada LLC Phone: (775) 215-1988 Fax: (775) 215-2870	Mark Coppler Voting Member Managing Director Ametek Inc Phone: (412) 826-2431 Fax: (412) 826-0686
Paul Dobrowsky Information Member Innovative Technology Services Phone: (585) 797-4462	Matt Dudones Alternate Member Expo Technologies Phone: (440) 247-5314 Fax: (440) 247-5409
Russell Ellis Information Member Phone: (800) 862-0200	William Fiske Voting Member Intertek Phone: (607) 758-6286 Fax: (607) 756-6274
Richard Fontaine Voting Member FM Approvals Phone: (401) 567-5007 Fax: (401) 568-6241	Gurinder Garcha Voting Member GE Energy Phone: (678) 844-6371
Frederick Kent Voting Member Honeywell Inc Phone: (215) 641-3533 Fax: (215) 641-3786	William Lawrence Alternate Member FM Approvals LLC Phone: (781) 255-4822 Fax: (781) 762-9375
Sheryl Leverington Information Member	Victor Maggioli Information Member Feltronics Corp Phone: (302) 547-6870 Fax: (302) 737-5472
Richard Masek Voting Member Chair CSA International Phone: (216) 524-4990 x8228 Fax: (216) 328-8101	Evans Massey Voting Member Baldor Electric Co Phone: (864) 281-2399 Fax: (864) 382-2718
Jon McCormick Information Member Bently Nevada LLC Phone: (775) 215-1462 Fax: (775) 215-2870	Paul McGuire Information Member
Andy Mobley Voting Member	William Mostia Information Member SIS-Tech Solutions Phone: (281) 334-3169
Jeremy Neagle Alternate Member Intertek ETL SEMKO Phone: (607) 758-6297 Fax: (607) 753-6761	Chris Romano Alternate Member Pepperl+fuchs Phone: (330) 425-3555 Fax: (330) 425-4607
Arthur Shvartsman Voting Member Pepperl+Fuchs Phone: (330) 425-3555 Fax: (330) 963-5827	Rodolfo Sierra Information Member USCG Phone: (202) 372-1381
Dalia Tawy Voting Member Solar Turbines Incorporated Phone: (858) 694-6774	Ian Verhappen Information Member Industrial Automation Networks Inc Phone: (780) 842-4722 Fax: (780) 628-7352
David Wechsler Voting Member Dow Chemical Co Phone: (979) 238-3535 Fax: (979) 238-0597	Jerome West Voting Member Expo Technologies Inc Phone: (631) 476-2320 Fax: (253) 736-1828