NR 665.1054(1)(1) Except during pressure releases, operate each pressure relief device in gas or vapor service with no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, measured by the method specified in s. NR 665.1063 (3). NR 665.1054(2)(a)(a) After each pressure release, return the pressure relief device to a condition of no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, as soon as practicable, but no later than 5 calendar days after each pressure release, except as provided in s. NR 665.1059. NR 665.1054(2)(b)(b) No later than 5 calendar days after the pressure release, monitor the pressure relief device to confirm the condition of no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, measured by the method specified in s. NR 665.1063 (3). NR 665.1054(3)(3) Any pressure relief device that is equipped with a closed-vent system capable of capturing and transporting leakage from the pressure relief device to a control device described in s. NR 665.1060 is exempt from subs. (1) and (2). NR 665.1054 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 665.1055NR 665.1055 Standards: sampling connection systems. NR 665.1055(1)(1) Equip each sampling connection system with a closed-purge, closed-loop or closed-vent system. The system shall collect the sample purge for return to the process or for routing to the appropriate treatment system. Gases displaced during filling of the sample container are not required to be collected or captured. NR 665.1055(2)(2) Each closed-purge, closed-loop or closed-vent system required in sub. (1) shall meet one of the following requirements: NR 665.1055(2)(a)(a) It returns the purged process fluid directly to the process line. NR 665.1055(2)(c)(c) It is designed and operated to capture and transport all the purged process fluid to a waste management unit that complies with the applicable requirements of ss. NR 665.1085 to 665.1087 or a control device that complies with s. NR 665.1060. NR 665.1055(3)(3) In-situ sampling systems and sampling systems without purges are exempt from subs. (1) and (2). NR 665.1055 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 665.1056NR 665.1056 Standards: open-ended valves or lines. NR 665.1056(1)(a)(a) Equip each open-ended valve or line with a cap, blind flange, plug or a second valve. NR 665.1056(1)(b)(b) The cap, blind flange, plug or second valve shall seal the open end at all times except during operations requiring hazardous waste stream flow through the open-ended valve or line. NR 665.1056(2)(2) Operate each open-ended valve or line equipped with a second valve in a manner such that the valve on the hazardous waste stream end is closed before the second valve is closed. NR 665.1056(3)(3) 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 sub. (1) at all other times. NR 665.1056 HistoryHistory: CR 05-032: cr. Register July 2006 No. 607, eff. 8-1-06. NR 665.1057NR 665.1057 Standards: valves in gas or vapor service or in light liquid service. NR 665.1057(2)(2) If an instrument reading of 10,000 ppm or greater is measured, a leak is detected. NR 665.1057(3)(a)(a) Any valve for which a leak is not detected for 2 successive months may be monitored the first month of every succeeding quarter, beginning with the next quarter, until a leak is detected. NR 665.1057(3)(b)(b) If a leak is detected, monitor the valve monthly until a leak is not detected for 2 successive months. NR 665.1057(4)(a)(a) When a leak is detected, repair it as soon as practicable, but no later than 15 calendar days after the leak is detected, except as provided in s. NR 665.1059.