ML20196E532
| ML20196E532 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/17/1999 |
| From: | Campbell G CENTERIOR ENERGY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 2602, NUDOCS 9906280289 | |
| Download: ML20196E532 (3) | |
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E" Davis-Besse Nuclear Power Station 5501 North State Poute 2 M
Oak Harbor, Ohio 43449-9760 Quy C. Campbell 41%321 8568 Vwe Preskient-Nuclear Fax:419-3214337 Docket Number 50-346 License Numbe:NPF-3 Serial Number 2602 June 17, 1999 United States Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555-000)
Subject:
Additional Information Related to Inservice inspection Relief Request A16 Ladies and Gentlemen:
The FirstEnergy Nuclear Operating Company (FENOC) submitted a request to the NRC for relief from certain requirements of the American Society of Mechanical Engineers (ASME)
Boiler and Pressure Vessel (B&PV) Code,Section XI for the Davis-Besse Nuclear Power Station, Unit 1 (DBNPS) on January 4,1999 (FENOC letter Serial Number 2564). On June 8, 1999, discussions were held between the NRC and DBNPS staffs concerning Relief Request
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(RR) A16. During these discussions and by a subsequent facsimile, information was provided to the NRC staff that resolved questions related to RR-A16. The attached formally transmits that information to support NRC approval of RR-A16.
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Should you have any questions or require additional information, please contact Mr. James L.
Freels, Manager-Regulatory Affairs at (419) 321-8466.
Very truly yours, M
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RMC/dle I
9906280289 990617 PDR ADOCK 05000346 Attachment P
PDR cc:
J. E. Dyer, Regional Administrator, Region III S. N. Bailey, NRC Project Manager K. S. Zellers, DB-1 Senior Resident Inspector l
Utility Radiological Safety Board
f Docket Number 50-346 Ljc'ense Number NPF-3 Serial Number 2602 Attachment Page1of1 l
l ADDITIONAL INFORMATION FOR RELIEF REQUEST RR-A16 l
Background:
Relief Request RR-A16 requests relief from Section XI of the ASME B&PV Ccde 1986 Edition, No Addenda, Code Item B15.51 that requires a system hydrostatic test of Class 1 piping. Relief from performing the system hydrostatic test of the piping between valves DH 11 and DH 12 is requested. The FENOC proposes to perform VT-2 visual examination of this piping while the l
Decay Heat Removal (DHR) System is in service and also perform ultrasonic and liquid penetrant examinations of the welds attaching valves DH 11 and DH 12 to the piping.
I AdditionalInformation:
The following additional information is in response to NRC questions and is consistent with the information previously provided via telephone and facsimile communication.
The DHR System piping, specifically that between valves DH 11 and DH 12, will be maintained.
at a pressure above 200 psig for at least four (4) hours after valves DH 11 and DH 12 have been opened to satisfy the proposed alternative ISI requirements of RR-A16. The valves are normally opened and power is removed to the valve operators before reaching 260 psig during Reactor Coolant System (RCS) cooldown in order to meet Technical Specification 3.4.2 requirements for Low Temperature Overpressurization Protection. Cooling down the RCS to a temperature corresponding to less than 200 psig following opening of valves DH 11 and DH 12 is normally performed in conjunction with two Reactor Coolant Pumps in one loop running. The time required for the RCS to cool down to this temperature from when valves DH I1 and DH 12 are opened is normally in excess of six (6) hours.
The insulation on the piping between valves DH I1 and DH 12 will be removed for the VT-2 visual examination of the piping to satisfy the proposed alternative ISI requirements of RR-A16.
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Docket Nurnber 50-346 License Number NPF-3
. Serial Number 2602 COMMITMENT LIST The following list identifies those actions committed to by the Davis-Besse Nuclear Power Station in this document. Any other actions discussed in the submittal represent intended or planned actions by Davis-Besse. They are described only as information and are not regulatory commitments. Please notify the Manager - Regulatory Affairs (419-321-8466) at Davis-Besse of any questions regarding this document or associated regulatory commitments.
l COMMITMENTS DUE DATE The DHR System piping, specifically that between valves Dli On implementation of RR-A16 11 and DH 12, will be maintained at a pressure above 200 psig for at least four (4) hours after valves DH I1 and DH 12 have been opened to satisfy the proposed ISI requirements of RR-A16.
The insulation on the piping between valves DH I1 and DH 12 On emplementation of RR-A16 j
will be removed for the VT-2 visual examination of the piping to l
satisfy the proposed ISI requirements of RR-A16.
Commitment List, page 1 of I