Section 296-32-23534 - Tent heater, torches and open flamesWhen open flames must be used in manholes, the following precautions must be taken to protect against the accumulation of combustible gas:
(1) A test for combustible gas must be made immediately before using any open flame device.(2) A fuel tank (e.g., acetylene) may not be in the manhole unless in actual use.(3) Open flames must not be used within ground tents or on platforms within aerial tents unless: (a) The tent covers are constructed of fire resistant materials; and(b) Ventilation is provided to maintain safe oxygen levels and avoid harmful buildup of combustion products and combustible gases.Wash. Admin. Code § 296-32-23534
Adopted by WSR 17-20-069, Filed 10/2/2017, effective 1/1/2018Amended by WSR 20-20-109, Filed 10/6/2020, effective 11/6/2020