ML20058F056
| ML20058F056 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 10/25/1990 |
| From: | Sieber J DUQUESNE LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20058F058 | List: |
| References | |
| TAC-77830, NUDOCS 9011080070 | |
| Download: ML20058F056 (2) | |
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A Qq r Wttey Ptwer Staten Stwnaport, PA E07M004 n we,w %p M121393 5755 October 25, 1990 U. S.' Nuclear Regula?-'f Commission Attn:
Document Cont.. Desk Washington,.DC 20555 1
Reference:
Beaver Valley Power Station, Unit No. 1 1
Docket No. 50-334, License No. DPR-66 Proposed Operating License Change Request No. 183 (TAC No. 77830)
Gentlemen:
Enclosed are:
1.
An Application for Amendment.tx) the above operating License to reduce the
' required river water flow rate through the Recirculation Spray heat-exchangers from 8,000 gpm to 6,000 gpm for the remainder of cycle eightL(8) operation.
2.-
Documents -designated' Attachments; A, B and C which set forth the change in' the. Technical Specifications, the safety analysis, including.the no' significant hazards evaluation, and the typed l
~ rap) ement Technical Specification pages.
l On Octsber. 18,~1990, we submitted a roquest for a temporary waiver of compliance
-in. meeting. the Beaver. Valley Unit No.
1 Technical Specifications.-
Specifically, theLLimiting condition for Operation-(LCO)- 'for the containment recirculation spray system (RSS) required a Lminimum.-flow of 8,000 gallons per Iinute through RSS subsystems which L
includes-two heac exchangers 'in each : subsystem.
This value had not-s beeni met and. it had been determined that the flow through the "C"
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. heat ' exchanger of the""A" Train subsystem was experiencing unexpected
. increases 4 in flow: resistance.
This is a result of tube-plugging due l'
to'1 Asiatic-; clams and-other river water debris. -The request was to L
permit:1 redefining the,.mi.nimum required river. water flow thrcugh the 4 RSSt heat' exchangers. -while-still satisfying the safety analysis with
-re'spect=
to containment-depressurization and
-offsite
-dose q.
- consequancos.
L The. temporary-waiver was granted to the Duquesne-Light' Ccimpany (DLC)
- 1. a -
cn ' October; 19,-
.1990 and permits continued plant operation with a.
reduced -flow of -at least 6,000 gpm through the recirculation spray
-heati exchangers -until a change lto-the1 Technical Specification can be:
procesued.
Attached is our proposed change which incorporates.the i.
revised ' operating restrictions specified in the temporary waiver.
We
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will : increase-:our ' monitoring ^ of ;the river water flow to a monthly
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Lbasis and continue 'this test frequency,-on any recirculation spray heat. exchanger train which exhibits a flow offless than 8,000 gpm,
.until~fthe ' eighth-(8th) refueling outage.
In the event-that a rapid i
degradation.fof river ~ water flow. is occurring, we will take the
}g appropriate actions to place the plant-in a safe condition.
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9011080073 901025
-PDR ADOCK 05000334 s @\\
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PropoOOd Operating Lic3n03 Chang 3 Rzqu22t No. 183 (Tac No. 77830)
Page 2 This change was reviewea by the OSC and ORC and was determined to be q
safe and does not involve on unreviewed safety question.
J
' We request that this proposed change be handled as an. emergency Technical Specification Change in accordance with 10 CFR 50.91(a) (5).
Based on BVPS Unit 1 presently operating under the temporary waiver l
of compliance which allows a
reduction in river water flow to the Recirculation Spray System heat exchangers, it is necessary that the j
change be handled as an emergency change.
Sincerely, cs
/jJ.
D.
Sieber l;,
'VVice President Nuclear Group cc:
Mr.
J.- Beall, Sr. Resident-Inspector Mr. T. T. Martin, NRC Region I Administrator 4
Mr. A. W.
DeAgazio, Project Manager Mr.
R.
Saunders (VEPCO)
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