ML20101H251
| ML20101H251 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 03/21/1996 |
| From: | Bowling M VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 96-114, NUDOCS 9603290184 | |
| Download: ML20101H251 (5) | |
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March 21, 1996 United States Nuclear Regulatory Commission Serial No.96-114 Attention: Document Control Desk NL/RPC Washington, D.C. 20555 Docket Nos. 50-338 l
License Nos. NPF-4 Gentlemen:
l VIRGINIA ELECTRIC AND POWER COMPAN1 NORTH ANNA POWER STATION UNIT 1 EMERGENCY RESPONSE DATA SYSTEM DATA BASE UPDATES As a result of a North Anna design change that replaced the Unit 1 letdown radiation monitor, modifications to a related single Emergency Response Data System (ERDS) point were necessary. The instrument range and engineering units for the Unit 1 letdown radiation monitor point were modified. The corresponding change for Unit 2 was reported to you in our letter (Serial No.95-259) dated May 25,1995. The change is detailed in the Data Point Library (DPL) reference file form for North Anna Unit 1 in. Attachment 2 provides the revision summary (change report) for the I
affected North Anna Unit 1 point. The updated data base files, documented in Attachments 1 and 2, are also provided in the dBase IV format as Attachment 3.
Should you require additional information, please contact us.
Very truly yours, Nk M. L. Bowling, anager l
Nuclear Licensing and Operations Support Attachments
- 1. Updated Data Point Library Reference File Sheet for North Anna Unit 1
- 2. Revision Summary for North Anna Unit 1
- 3. Updated DPL Data Base Files in dBase Format (NUS copy only) l cc:
U. S. Nuclear Regulatory Commission (Attachments 1 and 2)
Region 11 101 Marietta Street, N.W.
l Suite 2900 Atlanta, Georgia 30323
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Mr. R. D. McWhorter (Attachments 1 and 2)
NRC Senior Resident Inspector North Anna Power Station NUS Corporation / El Division (Attachments 1,2, and 3)
P. O. Box 59736 I
Attention: Mr. Tony LaRosa 290032
$GhI Idaho Falls, Idaho 83405 f
9603290184 960321 PDR ADOCK 05000338 F
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i ATTACHMENT 1 UPDATED DATA POINT LIBRARY REFERENCE FILE SHEET l
NORTH ANNA UNIT 1 1
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STATION: North Ama PRINTED UNIT: 1 03/07/96 PWR DATA POINT LIBRARY REFERENCE FILE DATE:
03/07/96 REACTOR UNIT:
NA1 DATA FEEDER:
N/A NRC ERDS PARAMETER:
RCS LTDN RAD POINT ID:
R1RM214C PLANT SPEC POINT DESC:
RCS LETDOWN HIGH RAD MON GENERIC /COND DESC:
RAD LEVEL OF RCS LETDOWN LINE ANALOG / DIGITAL:
A ENGR UNITS /CIG STATES:
MR/HR ENGR UNITS CONVERSION:
N/A MINIMUM INSTR RANGE:
0.0 MAXIMUM INSTR RANGE:
1.0E+4 ZERO POINT
REFERENCE:
N/A REFERENCE PolNT NOTES:
N/A PROC OR SENS:
P NUMBER OF SENSORS:
1 HOW PROCESSED:
EXPONENTIATED VALUE OF LOGARITHMIC INPUT SENSOR LOCATIONS:
RCS LETDOWN LINE ALARM / TRIP SETPOINTS:
VARIABLE NI DETECTOR POWER SUPPLY CUT-OFF POWER LEVEL:
N/A NI DETECTOR POWER SUPPLY TURN-ON POWER LEVEL:
N/A INSTRUMENT FAILURE MODE:
N/A TEMPERATURE COMPENSATION FOR DP TRANSMITTERS:
LEVEL REFERENCE LEG:
N/A UNIQUE SYSTEM DESC:
Continuously monitors radiation level in the reactor coolant by means of a strap-on monitor on the letdcwn line.
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ATTACHMENT 2 REVISION
SUMMARY
NORTH ANNA UNIT 1 1
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1 STATION: North Anna PRINTED UNIT: 1 02/27/96 PWR DATA POINT LIBRARY REFERENCE FILE CHANGE REPORT CHANGED POINT R1RM214C AT 13:28 ON 02/27/96. CHANGES WERE AS FOLLOWS:
DATE:
WAS: 03/21/91 IS: 02/27/96 ENGR UNIT / DIG STATES:
WAS: CPM IS: MR/HR MINIMUM INSTR RANGE:
WAS: 3.162 IS: 0.0 MAXIMUM INSTR RANGE:
WAS: 1.OE+6 IS: 1.0E+4
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