M EM O RA N D UM. NFPA 652 First Draft Correlating Committee FINAL Ballot Results (A2018)

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M EM O RA N D UM TO: FROM: DATE: SUBJECT: Correlating Committee on Combustible Dusts Yiu Lee, Project Administrator January 27, 2017 NFPA 652 First Draft Correlating Committee FINAL Ballot Results

1 M EM O RA N D UM TO: FROM: DATE: SUBJECT: Correlating Committee on Combustible Dusts Yiu Lee, Project Administrator January 27, 2017 NFPA 652 First Draft Correlating Committee FINAL Ballot Results (A2018) According to the final ballot results, all of the First Draft Correlating Committee Notes received the necessary affirmative votes to pass ballot. 14 Members Eligible to Vote 1 Members Not Returned (LeBlanc) The attached report shows the number of affirmative, negative, and abstaining votes as well as the explanation of the vote for each correlating committee note. To pass ballot, each correlating note requires (1) a simple majority of those eligible to vote and (2) affirmative vote of ¾ of ballots returned. See Sections (c) and of the Regulations Governing the Development of NFPA Standards. Page 1 of 35

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8 National Fire Protection Association Report 1 of 3 12/15/ :14 AM First Revision No. 9-NFPA [ Section No. 8.8 ] 10.8 Electrical Area Classification * In local areas of a plant where combustible or flammable liquids are present, or where combustible metal dust accumulates or is present in suspension in the air, the area shall be classified, and all electrical equipment and installations in those local areas shall comply with Article 500 of NFPA 70, National Electrical Code. The classification criteria in NFPA 70 shall be applied whenever combustible metal particulate meets the definition of combustible metal dust in this standard, not withstanding the definition of combustible dust in NFPA The identification of the possible presence and extent of Class II locations shall be made based on the criteria in NFPA 70, Article (C) All areas designated as hazardous (classified) locations shall be documented, and such documentation shall be maintained and preserved for access at the facility Electrical equipment and wiring within Class II locations shall comply with Article 500.5(C) of NFPA * Electrical equipment and components installed in unclassified locations, where combustible metal dusts are processed or handled, shall be inspected both internally and externally and cleaned at least annually, or more frequently if warranted. Preventive maintenance programs for electrical equipment and wiring in Class II locations shall include provisions to verify that dusttight electrical enclosures are not experiencing significant dust ingress * Zone classification for dusts in accordance with Article 506 of NFPA 70 shall not be permitted Flashlights and other portable electrical equipment shall be identified for the locations where they are used All hazardous (classified) areas identified in accordance with shall be documented, and such documentation shall be maintained on file for the life of the facility. Supplemental Information File Name Annex_Material_for_FR_-_9.docx Description Submitter Information Verification Submitter Full Name: Susan Bershad Organization: [ Not Specified ] Street Address: City: State: Zip: Submittal Date: Mon Aug 10 12:31:09 EDT 2015 Page 8 of 35

9 National Fire Protection Association Report 2 of 3 12/15/ :14 AM Correlating Committee Actions The correlating committee may override this FR with a First Correlating Revision or with a Committee Note Committee Statement and Meeting Notes Committee Statement: Response Message: Clarifies electrical classification requirements for metal dusts - points to NFPA 70, but does not endorse the definition of combustible dust in NFPA 70. Makes clear that zone classification is not to be used for metal dusts. Ballot Results This item has passed ballot 28 Eligible Voters 3 Not Returned 25 Affirmative All 0 Affirmative with Comments 0 Negative with Comments 0 Abstention Not Returned Davis, Scott G. Rosenberger, Mark S. Young, David K. Affirmative All Belfanti, John Bruce, Donna R. Buc, Elizabeth C. Burridge, Brad D. Christman, Tom Creswell, Gregory F. Dillon, Scott E. Downing, Peter F. Drake, Mark W. Evans, Steven C. Hart, Paul F. Horden, Eli Hubert, Daniel J. Kong, Dehong Kreitman, Kevin Levitt, Peter Page 9 of 35

10 National Fire Protection Association Report 3 of 3 12/15/ :14 AM Myers, Timothy J. Rodgers, Samuel A. Seidel, Richard Super, Gregory M. Thornton, Patrick A. Ural, Erdem A. Varga, Richard S. Zalosh, Robert G. Zimmerman, Stephen Editorial Comment Click here Page 10 of 35

11 Annex Material for FR-9 A The NFPA , Article 500, definition of combustible dust limits particle size and conflicts with the definition of combustible metal dust in this standard. Combustible metal dust should be considered Class II, Group E regardless of particle size. See NFPA 497, Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas; and NFPA 499, Recommended Practice for the Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas, for information on electrical area classification. Housekeeping can be used to reduce or eliminate the electrical area classification for a location where combustible metal dust is present. The upgrading of electrical equipment to meet Article 500 of NFPA 70 can be costly and users might better focus on preventing fugitive dust escaping from equipment and accumulations to minimize the extent of the hazardous (classified) locations. A Finding combustible metal dust or powder within electrical equipment and components should warrant more frequent inspection and cleaning. A NFPA has recently provided guidance for Zone classification which clarifies that combustible metal dust is Group IIIC, regardless of particle size. However, this clarification has not yet progressed through the NFPA 70 revision cycle, Page 11 of 35

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MEMORANDUM. Technical Committee on Fundamentals of Combustible Dusts. NFPA 652 First Draft Technical Committee FINAL Ballot Results (A2018)

MEMORANDUM. Technical Committee on Fundamentals of Combustible Dusts. NFPA 652 First Draft Technical Committee FINAL Ballot Results (A2018) National Fire Protection Association 1 Batterymarch Park, Quincy, MA 02169-7471 Phone: 617-770-3000 Fax: 617-770-0700 www.nfpa.org MEMORANDUM TO: FROM: Technical Committee on Fundamentals of Combustible