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dhinesht
Associate

Join Date: May 2010
Posts: 49

Thermal Power Plant-Doubt

04/02/2012 11:45 PM

Dear all,

Normally in main stop valves and RSV valves there is one capillary line called leak off line, i.e. a quantum of steam is leaked from the valve and enter into the GSC (Gland Steam Condenser).

Can anybody point the reason of it.?

Thanks in advance
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SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33392
Good Answers: 1817
#1

Re: Thermal Power plant-Doubt

04/03/2012 12:07 AM

Reheat steam valves are to protect turbine from overspeed, it is a safety control device....

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otha
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Join Date: Oct 2008
Location: Meherrin Virginia
Posts: 319
Good Answers: 6
#2
In reply to #1

Re: Thermal Power plant-Doubt

04/06/2012 8:50 AM

The line that you refer to is usually a bleed off line for a balanced valve. Look the drawing over and see if the valve evacuates a cylinder shaped area. You may also see piston rings.

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