UL 122701-2011 UL Standard for Safety Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids (Second Edition; Reprint with revisions through and including June 6@ 2016)
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. The requirements of this document apply to process seals as described in the process sealing sections of ANSI/NFPA 70 in the United States or CSA C22.1 in Canada and not to electrical conduit and cable seals. Requirements for basic electrical safety and explosion protection are not addressed by this document@ but may apply to equipment under investigation. The secondary effects of leakage to the environment are not addressed by this document.
UL 122701-2011 history
1970UL 122701-2021 UL Standard for Safety Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids
2017UL 122701 BULLETIN-2017 UL Standard for Safety Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids (COMMENTS DUE: MARCH 6@ 2017)
2017UL 122701-2017 Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids
2016UL 122701 BULLETIN-2016 UL Standard for Safety Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids (COMMENTS DUE: OCTOBER 17@ 2016)
2011UL 122701-2011 UL Standard for Safety Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluids (Second Edition; Reprint with revisions through and including June 6@ 2016)