4 Va. Admin. Code § 25-40-660 – Removing flammable and combustible gases from containers.

1. The pipe or container shall be drained, thoroughly cleaned and ventilated; and
2. The pipe or container shall be filled with an inert gas or material.

Prior to applying heat, cutting, or welding on any pipe or container that has contained a flammable or combustible material:

§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.

Derived from VR480-05-1.2 § 4.18, eff. July 19, 1989; amended, Virginia Register Volume 14, Issue 17, eff. July 1, 1998.