ML20012B817
ML20012B817 | |
Person / Time | |
---|---|
Site: | North Anna ![]() |
Issue date: | 03/09/1990 |
From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
References | |
90-106, NUDOCS 9003160353 | |
Download: ML20012B817 (2) | |
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VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 y4 x:
March 9, 1990 1
U.iS.l Nuclear Regulatory Commission Serial No.90-106 Attention: Document Control Desk NAPS /JHL f
I Washington - D.. C. 20555 Docket Nos. 50-338 50-339 License Nos. NPF-4 NPF Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY MRO 2 CHANGE IN RADI0 ACTIVE EFFLUENT SAMPLING EQUIPMENT The. Virginia Electric' and. Power Company plans to simplify the North Anna
- liquid radioactive' effluent sampling system to increase reliability and reduce exposure._
North Anna Unit ~ 1 license condition 2.D(3)e and North Anna Unit 2 license
' condition.2.G require us to notify' the NRC when plans are made to remove. or make' : significant changes in the normal operation.of equipment that controls the amount 'of radioactivity in effluents. Notification is required regardless.
of. whether the change affects the amount of radioactivity in effluents.
LWe-plann to remove liquid waste pumps 1-LW-P-28 and 1-LW-P-34~ and-associated control. equipment from the liquid waste system. LW-P-28 and 1-LW-P-34 are
_ pumps that'. draw.a sample ^ from the effluent that is going to the discharge _.
canal _and place the' sample in a: holdup drum for sampling analysis.
- These
- pumpsi have required a great deal of maintenance in the past. ' The pumps will be replaced by installing 1) a tee _in the existing grab sample inlet line, 2) a two_-way solenoid operated valve,-3) a 0 to 100 psig pressure indicator and-4)- a 1/4" manual regulating valve, with associated fittings and tubing to allow. sample flow.-. The modified -sample' system will function more. reliably
'than'the currently installed system and-reduce maintenance and personnel;
' exposure.
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' The. modifications to the sampling system are expected to occur by April 1990 and will not affect the' amount of radioactivity in effluents.
If you have further questions, please contact us.
- Very truly yours,
- W. L. Stewart Senior Vice President - Nuclear cc:-
U.'S. Nuclear Regulatory Commission Region II 101 Marietta Street. N. W.
. Suire 2900 Atlanta, Georgia 30323 Nr. : J. L.. Caldwell NRC Senior Resident Inspestor North Anna Power Station I
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