Haw. Code R. §§ 11-261.1056 - Standards: Open-ended valves or lines
(a)
(1) Each open-ended valve or line shall be
equipped with a cap, blind flange, plug, or a second valve.
(2) The cap, blind flange, plug, or second
valve shall seal the open end at all times except during operations requiring
hazardous secondary material stream flow through the open-ended valve or
line.
(b) Each
open-ended valve or line equipped with a second valve shall be operated in a
manner such that the valve on the hazardous secondary material stream end is
closed before the second valve is closed.
(c) When a double block and bleed system is
being used, the bleed valve or line may remain open during operations that
require venting the line between the block valves but shall comply with
paragraph (a) of this section at all other times.
Notes
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
No prior version found.