ML19095A647
| ML19095A647 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 03/12/1976 |
| From: | Stallings C Virginia Electric & Power Co (VEPCO) |
| To: | Rusche B Office of Nuclear Reactor Regulation |
| References | |
| Serial No. 933 | |
| Download: ML19095A647 (1) | |
Text
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Dear *:
Mr~ *Rusche:
In *accordance with. Tedui.i.cal, Spe.c;ificatiori *:4.::1-4,c.J,.. for :Surry. Power*
.Station~ this.report.describes.an occurrence dur1;ng which the* difference.be.;_
tween*. the' river' water. a:inbient. temperature :ineasured'. at; the' station ~igh. level intake and.cool1:ngwater.at the* dischll:rge coritrol.structure:excee.ded.'15.degrees*
- F.
..At. the time :of. the occurrence,'. both Unit. Nos~ 1 and 2 were operating
. at :100.percent. power~
On February 28';
- 1!976',; at approximately.0310. hou:rs,
.. during a. routine inspection~. it was noted : that. the** traveling water* screeil.* for*
circulating water.pump 2-CW.;.:,lD was jammed *. -Ari.'0632.hours;* a. load reduction was initiated* ori. Unit ijo *. 2.
Ari ;0726 hours0.0084 days <br />0.202 hours <br />0.0012 weeks <br />2.76243e-4 months <br />, with:Unit No.: 2.le.veled*:out at
- :so percent. power; circulating water*:pump
- 2-CW...;.lD was. secured. tq
- facilitate re-pai.r.of. the screens *.. The. resultant. reduction. in circulat1:ng water: flow* caused a* gradual. increase** in. temperature d::i.f ference * (~T)
- across. the. station~.. At ap-proximately :0910 hours.the station* 6.T :exceeded*:15 degrees :F.
A :further.load reduction was initiated~
Station.LiT decreased to*below 15 degrees:F~ at 1030' hou-i;'s.*.. The*.duration of operationwiththe.station*LiT in*e.xcess of.'15 ~egrees
- F. was approximately 80 minutes., The maximum station LiT.during this period*
was :15. 9 degrees :F. *.There was.no apparent adverse environmental 'impact. re-
. sul ti:ng * £tom*. this *occurrence.
Very truly.yours,