Safety Valve Body Repair Procedure

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ssmv123 Member Join Date: Jun 2009 Posts: 5	Safety Valve Body Repair Procedure 07/07/2009 1:29 PM
	Safety valve body repair procedure needed: Observation: The steam safety valve body - nozzle fixing threaded area found to have eroded This erosion (observation) had been seen in superheater safety valve as well as in saturated steam safety valve. The depth of erosion is 10 mm MAX. around the nozzle for a height of 3 inches. The top portion of the thread got eroded. The material of the saturated steam safety valve is A217 Gr WCB and the material for the superheated steam safety valve is A217 Gr WC9.
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Anonymous Poster	#1 Re: Safety Valve Body Repair Procedure 07/07/2009 9:03 PM
	Do you require a VR stamp from the National Board? http://www.nationalboard.org/Index.aspx?pageID=115&ID=161 Should you really just send the valve to a qualified repair shop? For example: http://www.thorcoinc.com/relief-valve-repair.html
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#2 Re: Safety Valve Body Repair Procedure 07/08/2009 3:44 AM
	Change it for a new one, with original material and compliance certification. Repairs may not be worth the risk. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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betomachine Power-User Join Date: Apr 2007 Location: Austin, TX Posts: 367 Good Answers: 10	#3 In reply to #2 Re: Safety Valve Body Repair Procedure 07/08/2009 8:30 AM
	Agreed replace and dispose. Some plants I have worked at kept an inventory of spare PSVs for just such an occasion. __________________ Money doesn't talk, it screams in your face.
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