ML20247L689
| ML20247L689 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/24/1989 |
| From: | Sieber J DUQUESNE LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 8908010328 | |
| Download: ML20247L689 (2) | |
Text
7.
g Be Vaney Power Station
+*
Shrpomgport. PA 150774KLi Es Nudeer Grosp (412) 64M255 Ve n
July 24, 1989
- U.
S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, DC 20555
Reference:
' Beaver Valley Power Station, Unit No. 1 BV-1 Docket No. 50-334, License No. DPR-66 Emergency Operating License Change Request for Maximum River Water Temperature Limit Gentlemen:
'Per our letter dated June 22,
- 1989, Duquesne Light Company submitted proposed license change request No. 157 for Beaver Valley Power Station Unit No.
1 to permit continued plant operation above the current established limit of 86*F river water temperature.
During the evaluation process to support this license change, it was ' determined that the current Unit 1 technical specifications for river water temperature
[3.7.5.1],
RWST temperature [3.1.2.8] and containment air partial pressure
[3.6.1.4]
provided ambiguous information during periods when the river water temperature exceeded 80*F.
With the minimum RWST temperature attainable at this time of approximately 53'F and our current maximum allot.able containment air partial pressure operating curve
[ Figure 3.6-1J of specification 3.6.1.4, a
Unit 1
plant shutdown may be required below the 86*F caximum temperature limit of specification 3.6.5.1.
Due to the s
recent abnormally high ambient temperatures and forecast-for j
additional hot
- weather, our river 1.wter temperature has increased such that a plant shutdown could be required within the next few days
.if the proposed technical specification change is not approved.
We are therefore requesting that the proposed change request t
submitted be processed an an emergency technical specification change i
request per 3 0CFR50.91(a) (5).
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$4 I
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.Beavar Valley Power Station, Unit Nos. 1 Docket No. 50-334,-License No. DPR-66 Emergency Operating License Change Request for Maximum River Water Temperature Limit Page 2 The revised
- analyses, as submitted in our proposed technical specification change request were substantial.
This submittal was not provided in a nore timely manner due to the significant amount of plant re-analysis and reviews required to support this change.
These analyses included multiple LOCTIC input changes for the evaluation of the containment depressurization capability, NPSH evaluation of the containment depressurization
- pumps, River Water System components operation at the increased temperature limit-and plant cooldown duration.
Please
- note, as specified in our original submittal for Unit 1, that the LOCTIC analyses performed in support of the proposed change will also require approval of the proposed change to the RWST level setpoint for transfer to recirculation which was provided to you as part of proposed Technical Specification' Change Request No. 156.
Please contact my office if any further information is required in support of this request.
Very truly yours, t
(7 D
S Vice President Nuclear Group cc:
Mr. J.
Beall, Sr. Resident Inspector Mr. W.
T. Russell, NRC Region I Administrator Mr, P. Tata, Fr. Project Manager Mr. T. M, Garusky, Director BVP/ DER Mr. R Janati, BVP/ DER
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