Section 665.1057. Standards: valves in gas or vapor service or in light liquid service.

 

(1)  Monitor each valve in gas or vapor or light liquid service monthly to detect leaks by the methods specified in s. NR 665.1063 (2) and comply with subs. (2) to (5) , except as provided in subs. (6) to (8) and ss. NR 665.1061 and 665.1062 .

(2)  If an instrument reading of 10,000 ppm or greater is measured, a leak is detected.

(3)  

(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.

(b) If a leak is detected, monitor the valve monthly until a leak is not detected for 2 successive months.

(4)  

(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 .

(b) Make a first attempt at repair no later than 5 calendar days after each leak is detected.

(5)  First attempts at repair include, but are not limited to, the following best practices where practicable:

(a) Tightening of bonnet bolts.

(b) Replacement of bonnet bolts.

(c) Tightening of packing gland nuts.

(d) Injection of lubricant into lubricated packing.

(6)  Any valve that is designated, as described in s. NR 665.1064 (7) (b) , for no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, is exempt from sub. (1) if the valve meets all of the following requirements:

(a) It has no external actuating mechanism in contact with the hazardous waste stream.

(b) It is operated with emissions less than 500 ppm above background determined by the method specified in s. NR 665.1063 (3) .

(c) It is tested for compliance with par. (b) initially upon designation, annually and at other times requested by the department.

(7)  Any valve that is designated, as described in s. NR 665.1064 (8) (a) , as an unsafe-to-monitor valve is exempt from sub. (1) if the owner or operator does all of the following:

(a) Determines that the valve is unsafe to monitor because monitoring personnel would be exposed to an immediate danger as a consequence of complying with sub. (1) .

(b) Adheres to a written plan that requires monitoring of the valve as frequently as practicable during safe-to-monitor times.

(8)  Any valve that is designated, as described in s. NR 665.1064 (8) (b) , as a difficult-to-monitor valve is exempt from sub. (1) if all of the following requirements are met:

(a) The owner or operator of the valve determines that the valve cannot be monitored without elevating the monitoring personnel more than 2 meters above a support surface.

(b) The hazardous waste management unit within which the valve is located was in operation before June 1, 1995.

(c) The owner or operator of the valve follows a written plan that requires monitoring of the valve at least once per calendar year.

History: CR 05-032 : cr. Register July 2006 No. 607 , eff. 8-1-06.