ML18153C459
| ML18153C459 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 11/30/1990 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 90-546A, NUDOCS 9012100085 | |
| Download: ML18153C459 (6) | |
Text
..
- J e
e VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 November 30, 1990 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 1ST PROGRAM SER ANOMALIES SUPPLEMENTAL RELIEF REQUEST Serial No.
90-546A NO/ETS Docket Nos. 50-280 50-281 License Nos. DPR-32 DPR-37 Our letter dated November 29, 1990, (Serial No.90-546) provided the disposition of the anomalies identified in your Safety Evaluation Report (SER) for the Units 1 and 2 ASME Section XI lnservice Testing (1ST) Program for Pump and Valves. Interim relief requests were included for pump and valve testing to support Unit 1 operation, where the Section XI instrumentation was not installed during the current Unit 1 refueling outage.
We have since identified the need for a permanent pump testing relief request.
Specifically, the Outside Recirculation Spray Pumps inlet pressure instruments have not been installed. Based on system configuration, it_ has been determined that the instruments are unnecessary to perform the required Section XI testing.
The relief requests for the Outside Recirculation Spray Pumps for both Units 1 and 2 are include in the Attachment to this letter. Also included as attachment to this letter is a revised version of Table 1 from Attachment 1 in the November 29, 1990 letter.
Please replace our previously transmitted Table 1 (page 15 of 15) of Attachment 1 with this revised Table 1 and add the attached relief requests P-4 (4) to Attachment 4 of the November 29, 1990 letter.
Your prompt attention to the Unit 1 relief request and any necessary approval is being requested. It remains our intent to implement these revised relief requests with the startup of Unit 1, currently scheduled for December 5, 1990. If you have any additional questions, please contact us.
W. L.
te Senior ce President - Nuclear Attachment
e cc:
U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N. W.
Suite 2900 Atlanta, Georgia 30323 Mr. W. E. Holland NRC Senior Resident Inspector Surry Power Station
ATTACHMENT SURRY POWER STATION UNIT 1 AND 2 RELIEF REQUEST P-4 OUTSIDE RECIRCULATION SPRAY PUMPS
RELIEF REQUEST P-4 I.
IDENTIFICATION OF COMPONENTS System
- Recirculation Spray Pump(s) : 1-RS-P-2A 1-RS-P-2B Class
- 2 II.
IMPRACTICAL CODE REQUIREMENTS Measure inlet and differential pressures.
III. BASIS FOR RELIEF Inlet pressure instrumentation is not installed.
However, the outside recirculation spray pumps obtain flow through a suction bell immersed in the pump casing.
During testing, a casing level is established by filling the casing with PG water to provide NPSH to the pump.
Flow is recirculated through the pump, recirculation line, and back to the casing~
By establishing a casing level and maintaining it constant for all tests, any variation in pump differential pressure would be directly indicated by monitoring pump discharge pressure.
The static inlet pressure will be calculated and subtracted from the discharge pressure to yield a differential pressure.
IV.
ALTERNATE TESTING Maintain a constant pump casing water level from test to test by filling the casing with PG water to yield the same suction pressure for each test, then measure discharge pressure.
The static inlet pressure will be calculated and subtracted from the discharge pressure to yield a differential pressure.
RELIEF REQUEST P-4 I.
IDENTIFICATION OF COMPONENTS System Recirculation Spray Pump(s) 2-RS-P-2A 2-RS-P-2B Class
- 2 II.
IMPRACTICAL CODE REQUIREMENTS Measure inlet and differential pressures.
III. BASIS FOR RELIEF Inlet pressure instrumentation is not installed.
However, the outside recirculation spray pumps obtain flow through a suction bell immersed in the pump casing.
During testing, a casing level is established by filling the casing with PG water to provide NPSH to the pump.
Flow is recirculated through the pump, recirculation line, and back to the casing.
By establishing a casing level and maintaining it constant for all tests, any variation in pump differential pressure would be directly indicated by monitoring pump discharge pressure.
The static inlet pressure will be calculated and subtracted from the discharge pressure to yield~ differential pressure.
IV.
ALTERNATE TESTING Maintain a constant pump casing water level from test to test by filling the casing with PG water to yield the same suction pressure for each test, then measure discharge pressure.
The static inlet pressure will be calculated and subtracted from the discharge pressure to yield a differential pressure.
' ' - ~'
e November 30, 1990 TABLE 1 Status of ASME Section XI Instrumentation Identified in Item 3 of the NRC's SER, for Surry Power Station Unit 1 Expected Outage Pump Instrument Status Completion Related Charging Pumps 1-CH-P-1 A,B,C Inlet Pressure On Schedule Current Outage Yes Flow Rate Delayed Next Outage Yes Safety Injection Pumps 1-SI-P-1 A,B Inlet pressure On Schedule Current Outage Yes Recirculation Spray Pumps 1-RS-P-2A,B Inlet Pressure Do not plan to install this instrument.
See relief request P-4 in attachment 4.
Auxiliary Feedwater Pumps 1-FW-P-2 Flow Rate 1-FW-P-3A,B Boric Acid Transfer Pumps 1-CH-P-2A,B Inlet Pressure Flow Rate Vibration Emergency Service Water Pumps On Schedule Delayed Delayed Completed 1 SW-P-1 A,B,C Discharge Pressure Delayed Flow Rate* (Transmitter) Delayed EOG Fuel Oil Pumps 1-EE-P-1A,D Inlet Pressure 1-EE-P-1 F Discharge Pressure Flow Rate Vibration Inlet Pressure Discharge Pressure Flow Rate Vibration On Schedule On Schedule On Schedule Completed Delayed Delayed Delayed Completed Current Outage First Qtr 1991 Next Outage NA First Qtr 1991 First Qtr 1991 Current Outage Current Outage Current Outage NA First Qtr 1991 First Qtr 1991 First Qtr 1991 NA Yes No Yes No No No No No No No No The Flow elements are installed and the differential pressures are being measured and flow rates manually developed.
The flow transmitters will be installed during the operating cycle.
PAGE 15 OF 15