NFPA 326: Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or Repair
Current Edition: 2010 Next Edition: 2015

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NFPA 326:
2010 Edition
Item #: 32610
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What is NFPA 326?
NFPA 326: Document Scope
1.1.1* This standard shall apply to the safeguarding of tanks or containers, operating at nominal atmospheric pressure, that contain or have contained flammable and combustible liquids or other hazardous substances and related vapors or residues. 1.1.2* This standard shall not apply to tank vehicles or tank cars; tanks, bunkers, or compartments on ships or barges or in a shipyard; gas plant equipment or gas distribution systems for natural or manufactured gas; or compressed and liquefied gas cylinders. 1.1.3* This standard shall not apply to hot tapping. 1.1.4* This standard shall not apply to the entry of a tank that contains an inert atmosphere.

This standard outlines procedures to safeguard tanks or containers operating at nominal atmospheric pressure that contain or have contained flammable and combustible liquids or other hazardous substances before entry, cleaning, repair, or other activities can be performed.

Official document scope
What does NFPA 326 address?

Described in the logical order in which work is typically conducted, provisions cover basic precautions; preparation for safeguarding such as lockout/tag out, removal of hazardous substances, and isolation; testing procedures, control or removal of vapors, inspection and certification of tanks and containers, procedures for access to and entry of tanks, and cleaning tanks and containers.

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