ML19345E839
| ML19345E839 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 12/29/1980 |
| From: | Dunn C DUQUESNE LIGHT CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-21, NUDOCS 8102060248 | |
| Download: ML19345E839 (3) | |
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December 29, 1980 sm N
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g' United States Nuclear Regulatory Commission Office of Inspection and Enforcement
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Reference:
Beaver Valley Power Station, Unit No. 1 N*
Docket No. 50-334, License No. DPR-66 IE Bulletin 80-21 Gentlemeu:
Since our last correspondence, dated December 9, 1980, additional research has been completed to determine if valve parts cast by h icolm Foundry Company, Inc. were supolied in valves classified as safety related cnd installed in Beaver Valley Unit 1.
We have contacted all valve suppliers identified to date as having furnished valves for use in Beaver Valley Unit 1 and no supplier has indicated purchasing any items from hicolm Foundry.
We have identified 2714 safety-related valves in Beaver Valley. Of that number 2425 have been identified to 44 manufacturers and the manufacturers have indicated that components manufactured by Malcolm Foundry have not been used in these valves.
We have identified all valves which are used in ESF systen.s and all valves which form a part of the reactor coolant pressure boundary which, upon failure, could cause a LOCA. hnufacturers of these valves report that no components manufactured by hlcolm Foundry have been used in this application.
The remaining 289 valves have proven more difficult to identify.
In order to fully carry out the requirements of the Bulletin, a careful and detailed search of plant records must continue and, if necessary, a physical examination of each individual valve might prove necessary.
The in-plant physical examination is made difficult since 'nany of the valves involved are lagged and some may not be accessible while the plant is at power. We plan to continue to pursue examination of plant records and supplement this examination with in-plant inspection wht.re possible. We will also evaluate the application of each valve to determine if it can be recategorized as non-safety related. We expect that the inspec'. ion program, if required, will be completed during the outage presently scheduled for the spring of 1981.
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Betvar Vallsy Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 IE Bulletin 80-21 Page 2 The attached table lists the systems in which valves which remain to be identified are installed.
We will provide an additional response which summarizes the results of all work required to be performed on this bulletin within 30 days following the return to power from the spring shutdown, now scheduled to begin in mid-May 1981.
There have been 335 manhours expended thus far in researching this Bulletin.
Should you have any questions regarding this response, please contact my office.
Very truly yours, C. N. Dunn Vice President, Operations Attachment i
cc:
Mr. D. A. Beckman, Resident Inspector U.S. Nuclear Regulatory Commission Beaver Valley Power Station Shippingport, PA 15077 U.S. Nuclear Regulatory Commission c/o Document Management Branch Washington, DC 20555 1
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O Valves Requiring Further Investigation Chapter Title Valves Chapter 7 Chemical and Volume Control System 5
Chapter 9 Reactor Plant Vents and Drains 26 Chapter 10 Residual Heat Removal System 1
Chapter 12 Containment Vacuum and Leakage Monitoring System 5
Chapter 13 Containment Depressurization System 2
Chapter 15 Reactor Plant Component and Neutron Tank Cooling Water 9
Chapter 19 Gaseous Wasta Disposal System 38 Chapter 20 Fuel Pool Cooling and Purification System 9
Chapter 24 Steam Generator Feedwater System 6
Chapter 29 Chilled Water System 2'
Chapter 30 River Water System 64 Chapter 34 Compressed Air System 1
Chapter 36 4 KV Station Service System 24 Chapter 44 Area Ventilation Systems - Control Area 84 Chapter 47 Containment 13 y
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