- (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 always seal the open end except during operations requiring hazardous waste 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 so that the valve on the hazardous waste stream end is closed before the second valve is closed.
- (c) If 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 Subsection R315-265-1056(a) at any other time.
KEY: hazardous waste, TSD facilities, interim status
Date of Last Change: November 17, 2025
Notice of Continuation: December 11, 2025
Authorizing, and Implemented or Interpreted Law: 19-6-105; 19-6-106