ML20235N567
| ML20235N567 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 02/23/1989 |
| From: | Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 89-085, 89-85, NUDOCS 8903010286 | |
| Download: ML20235N567 (4) | |
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VINGINIA ELECTRIC AND Powan COMPANY HICIIMOND.VIHOINIA 202 61 W.H.CARTwuIGHT
"""IlIIIE" February 23, 1989 w
United States Nuclear Regulatory Commission Serial No.89-085 Attention:
Document Control Desk PES /ISI/DJF:jmj R1 Washington, D.C.
20555 Docket Nos.
50-338 50-339 License Nos. NPF-4 NPF-7 l
Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1 AND 2 CHANGE TO THE ASME SECTION XI INSERVICE
. HYDROSTATIC PRESSURE TESTING PROGRAN In your Safety Evaluation Report of our relief requests concerning 10 year hydrostatic testing on North Anna Unit 1 dated July 13, 1987, relief from testing pump discharge piping to a lower pressure was granted (Relief Request 5).
This relief was requested to eliminate subjecting pump suction piping, that cannot be-isolated, from the higher hydrostatic testing pressures associated with the discharge piping.
Relief Request 5 applies to the discharge piping for the feedwater, chemical and volume control, and safety injection pumps.
Further evaluation has revealed that Relief Request 5 should be expanded to include the component
- cooling, spent fuel pit
- cooling, quench and recirculation spray, and casing cooling pump discharge piping.
Relief Request 5 has been revised and is attached for your review.
Also attached for your review is a similar revision to Relief Request SPT-5 for North Anna Unit 2.
This request for relief was originally submitted for your review on October 3, 1988.
Should you require additional information regarding these items, please contact us.
Ver truly o s F
W. R. Cartwr ght l
Attachments i
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8903010286 890223 PDR ADOCK 05000338 i
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U. S. Nuclear Regulatory Comission 101 Marietta Street, N.W.
Suite 2900-Atlanta, GA 30323 Mr. J. L; Caldwell t
NRC Senior Resident Inspector North Anna Power Station g
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NORTH ANNA POWER STATION UNIT 1 RELIEF RE0 VEST 5 SYSTEM - Feedwater, Component Cooling, Spent Fuel Pit Cooling, Quench and Recirculation Spray, Casing Cooling, Chemical and Volume Control, and Safety Injection COMPONENTS - Centrifugal pumps and discharge piping to first isolation valve on drawings 11715-FM-79A, 11715-FM-88A, 11715-FM-91A, 11715-FM-91B, 11715-FM-95B, 11715-FM-96A l
Pumos 1-FW-P-2, 1-FW-P-3A, 1-FW-P-3B 1-CC-P-1A, 1-CC-P-1B 1-FC-P-1A, 1-FC-P-1B 1-QS-P-1A, 1-QS-P-1B 1-RS-P-2A, 1-RS-P-2B 1-RS-P-3A, 1-RS-P-3B 1-CH-P-1A, 1-CH-P-1B, 1-CH-P-1C 1-SI-P-1A, 1-SI-P-1B CODE REQUIREMENTS - System Hydrostatic Tests per IWC-5222 and IWD-5223 PROPOSED ALTERNATIVE EXAMINATION - As an alternative, the test pressure for the pump discharge and associated piping extending to the first shutoff valve on the discharge side of the pump shall be the same as that required for the piping and components on the suction side of the pump.
In support of this alternative, the 1980 Edition, Winter of 1981 Addenda of ASME Section XI (approved by the NRC) paragraph IWA-5224(d) allows the system test boundary interface to be the first shutoff valve on the discharge side of the centrifugal pump when the primary system pressure ratings on the suction and discharge sides differ.
REASON FOR RELIEF - Centrifugal pumps.and the portions of the pump discharge lines up to the first isolation valve cannot be isolated from the pump suction.
If the discharge piping were pressurized to the required test pressure, then the suction piping and/or pump would be subjected to a pressure far in excess of its design with the potential for permanent damage to piping and components.
NORTH ANNA POWER STATION UNIT 2 q
RELIEF REQUEST SPT REQUEST TO TEST AT LOWER PRESSURE SYSTEM - Feedwater, Component Cooling, Spent Fuel Pit Cooling, Quench and Recirculation Spray, Casing Cooling, Chemical and Volume Control, and Safety Injection COMPONENTS - Centrifugal pumps and discharge piping to first isolation valve on drawings 12050-FM-79A, 12050-FM-88A, 12050-FM-91A, 12050-FM-91B, 12050-FM-95B, 12050-FM-96A Pumos 2-FW-P-2, 2-FW-P-3A, 2-FW-P-3B 2-CC-P-1A, 2-CC-P-1B 2-FC-P-1A, 2-FC-P-1B 2-QS-P-1A, 2-QS-P-1B 2-RS-P-2A, 2-RS-P-2B 2-RS-P-3A, 2-RS-P-3B 2-CH-P-1A, 2-CH-P-1B, 2-CH-P-1C 2-SI-P-1A, 2-SI-P-1B CODE REQUIREMENTS - System Hydrostatic Tests per IWC-5222 and IWD-5223 l
PROPOSED ALTERNATIVE EXAMINATION - As an alternative, the test pressure for the pump discharge and associated piping extending to the first shutoff valve on the discharge side of the pump shall be the same as that required for the piping and components on the suction side of the pump.
In support of this alternative, the 1980 Edition, Winter of 1981 Addenda of ASME Section XI (approved by the NRC) paragraph IWA-5224(d) allows the system test boundary interface to be the first shutoff valve on the discharge side of the centrifugal pump when the primary system pressure ratings on the suction and discharge sides differ.
REASON FOR RELIEF - Centrifugal pumps and the portions of the pump discharge lines up to the first isolation valve cannot be isolated from the pump suction.
If the discharge piping were pressurized to the required test pressure, then the suction piping and/or pump would be subjected to a pressure far in excess of its design with the potential for permanent damage to piping and components.
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