Section 341.64. Safety and safety relief valve repairs.

 

(1)   Definitions. In this section:

(a) "Repair of a safety valve or safety relief valve" means the replacement, re-machining or cleaning of any critical part; lapping of seat and disc or any other operation that may affect the flow passage, capacity, function or pressure-retaining integrity; and disassembly, re-assembly and adjustments which affect the safety valve or safety relief valve function.

(b) "Repair of a safety valve or safety relief valve" does not include the initial adjustments of a new safety valve or safety relief valve on a boiler or pressure vessel if made by the manufacturer or assembler of the valve.

(2)   Broken seals. Safety valves and safety relief valves on which the seals have been broken shall be subject to the requirements for repairs.

(3)   Authorized repairs. Repair of a safety valve or safety relief valve shall be performed by an organization in possession of one or more of the following:

(a) ASME V, HV or UV code symbol stamp.

(b) National Board VR stamp covering the work to be performed.

(4)   Nameplates.

(a) When repair of a safety valve or safety relief valve occurs, a metal repair nameplate stamped with the information required by par. (b) shall be welded or otherwise permanently attached to the valve either above, adjacent to or below the original stamping. On small valves, a metal tag showing the repair nameplate information may be securely attached to the repaired valve.

(b) The information on the valve nameplate shall include the name of the repair organization, the symbol stamp and symbol stamp number, and the date of repair. If the set pressure has been changed, the new set pressure and capacity shall be indicated and the original nameplate or stamping shall be modified by marking out, although leaving legible, the prior set pressure and capacity. The new capacity shall be based on that for which the valve was originally certified. Only the current repair nameplate need be attached to the valve with the original or duplicate nameplate.

Cr. Register, February, 2000, No. 530 , eff. 3-1-00; CR 11-047 : am. (1) (a), (3) (intro.), (4) (a) Register May 2012 No. 677 , eff. 6-1-12.