ML19323C520
| ML19323C520 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 05/09/1980 |
| From: | Utley E CAROLINA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19323C521 | List: |
| References | |
| NO-80-698, NUDOCS 8005160129 | |
| Download: ML19323C520 (3) | |
Text
.
hwin 123 gggg Carolina Power & Light Company May 9, 1980 File: NG-3514(B)
SERIAL NO:
NO-80-698 Office of Nuclear Reactor Regulation Attention:
Mr. Thomas A. Ippolito, Chief Operating Reactors Branch No. 3 United States Nuclear Regulatory Commission Washington, D. C.
20555 BRUNSWICK STEAM ELECTRIC PLANT UNIT NO. 1 i
DOCKET NO. 50-325 LICENSE NO. DPR-71 REQUEST FOR EMERGENCY TECHNICAL SPECIFICATION CHANGE
Dear Mr. Ippolito:
In accordance with the Brunswick Unit 1 technical specifications surveillance requirement 4.7.5.2, Brunswick Unit 1 is required to shut down by May 16, 1980 to inspect the inaccessible hydraulic snubbers in the Unit 1 drywell. Because of a worsening sys*em capacity situation caused by the extended refueling outage which it gresently in progress on Brunswick Unit 2, Carolina Power & Light Company (CP&L) is requesting a temporary, one-time only, emergency technical specification change for Unit 1 to extend the inaccessible snubber inspection period for up to thirty (30) days, i.e.,
no later than June 15, 1980.
The reasons for requesting this change are as follows:
1.
Brunswick Unit 2 was shut down for refueling on March 1,1980.
This outage was scheduled to be completed in mid-May, 1980.
Unit 1 is scheduled to be shut down May 16, 1980 in order to comply with the snubber surveillance requirements of 4.7.5.2, and it was planned to begin the Unit 1 refueling outage at that time.
Due to somewhat slower progress than anticipated, the Unit 2 refueling outage has been extended until June, 1980 in order to comolete Mark I and other modifications. Also, we have reduced the number of construction workers (but not in critical path areas) which has improved health physics control of personnel during the outage. As a result of the Unit 2 outage extension, CP&L desires to defer beginning the Unit 1 refueling 411 Fayettevilla Street e P. O. Box 1551
- Raleigh, N. C. 27602
i i
l outage until the Unit 2 outage is nearing completion. Since the Unit 1 outage will also involve a large number of workers, minimizing outage overlap will maximize the utilization of the improved health physics control associated with the reduced construction force.
In order to reduce the outage overlap, it would be necessary to defer the start of the Unit 1 snubber inspection.
2.
Previous inspections of inaccessible Unit 1 snubbers have shown no increasing trend in inoperable snubbers, and the reinspection period has remained at the 124-day interval since l
September, 1978. We believe that extending the present inspec-tion interval to no later than June 15, 1980, will not compromise the pitblic health or safety. To further ensure that public
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health and safety is not compromised during this extension, we
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will instruct on-shif t operators to pay particular attention to seismic monitors and operating parameters on the recirculation j
and safety systems. Any seismic event or indicated abnormal i-dynamic loads (higher than previously observed or expected) on the recirculation system or any safety system will be analyzed promptly for probable impact on snubbers and primary system integrity. Also, we will continue to monitor drywell temperature, pressure, and leakage for indications of primary system integrity, and will take action required by technical specifications.
3.
With our present load predictions, if be.th Brunswick units were to be shut down simultaneously commencing in mid-May, 1980, CP&L's system reserves for late May and early June would i
be reduced to less than 540 MW (10%), which is less than system design reserves of 20% considered prudent by our regula-l tory agencies.
The 10% reserve figure does not include forced I
outages (actual average approximately 600 MW), necessary j
spinning reserve (305 MW), and regulation capacity (50 MW).
With these considerations, CP&L's system reserve would be negative 415 MW.
1 l
The affected technical specification page, 3/4 7-31, has been i
revised to reflect this change and is attached to this letter. Revisions are marked by a vertical bar in the right hand marg'.n.
In accordance with 10CFR170.12(c), we have determined that l
this technical specification change request is a Class II amendment.
Therefore, our check'in the amount of $1200 is enclosed as payment for the amendment fee..
I i
Your prompt attention to this urgent request will be greatly appreciated.
Yours very truly,
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[#E.E.Utley Executive Vice President Power Supply and Engineering & Construction DB/JB/JM/j c (1157)
Attaclunents Sworn to and subscribed before me this 9th day of May, 1980.
Y N$$s Notary Pu c
My cammission expires:
October 4, 1981
' " " " 4' N..4 cc:
Mr. J. P. O'Reilly
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