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ANSI/ISA 12.27.01-2011

Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids

This document provides specific requirements for process sealing between electrical systems and flammable or combustible process fluids where a failure could allow the migration of process fluids directly into the electrical system. This document contains requirements for construction and testing of single seal equipment, dual seal equipment, and add-on secondary seals.

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The International Society of Automation [isa]

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