ML20084C970
| ML20084C970 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 05/25/1995 |
| From: | Kansler M VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 95-259, NUDOCS 9505310643 | |
| Download: ML20084C970 (6) | |
Text
.
J.
VinointA ELECTHIC AND POWEM COMI'ANY R scunown, V HOINIA 20061 May 25, 1995 United States Nuclear Regulatory Commission Serial No.95-259 Attention: Document Control Desk NL&P/CGL R0 Washington, D. C. 20555 Docket Nos.
50-339 License Nos. NPF-7 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNIT 2 EMERGENCY RESPONSE DATA SYSTEM DATA BASE UPDATES As a result of a North Anna design change that replaced the Unit 2 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 2 letdown radiation monitor point were modified. Unit 1 was not affected by this change.
The change is detailed in the Data Point Library (DPL) reference file form for North Anna Unit 2 in Attachment 1. Attachment 2 provides the revision summary (change report) for the affected North Anna Unit 2 point. The updated data base files, documented in Attachments 1 and 2, are also provided in the dBase IV format on.
If you have questions, please ontact us.
Very truly yours,
/h W
M. R a
r, Vice Pr ide t N
e ervices Attachments:
- 1. Updated Data Point Library Reference File Sheet for North Anna Unit 2
- 2. Revision Summary for North Anna Unit 2
- 3. Updated DPL Data Base Files in dBase Format
%$[3kDockoSosoS39 p
PDR c(
t s
cc:
U. S. Nuclear Regulatory Commission (Attachments 1 and 2)
Region 11 101 Marietta Street, N. W.
Suite 2900 Atlanta, Georgia 30323 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 Idaho Falls, Idaho 83405 Attention: Mr. Tony LaRosa l
.a
v.
4 ATTACHMENT 1 UPDATED DATA POINT LIBRARY REFERENCE FILE SHEET FOR NORTH ANNA UNIT 2 i
i l
4 i
- .o UNIT: 2 05/I6/95 PWR DATA POINT LIBRARY REFERENCE FILE DATE:
05/16/95 REACTOR UNIT:
NA2 DATA FEEDER:
N/A NRC ERDS PARAMETER:
RCS LTDN RAD POINT ID:
R2RM214C PLANT SPEC POINT DESC:
RCS LETDOWN HIGH RAD MON GENEPIC/COND DESC:
RAD LEVEL OF RCS LETDOWN LINE ANALOG / DIGITAL:
A ENGR UNITS / DIG STATES:
MR/HR ENGR UNITS CONVERSION:
N/A MINIMUM INSTR RANGE:
0.0 MAXIMUM INSTR RANGE:
1.0E4 ZERO POINT
REFERENCE:
N/A REFERENCE POINT NOTES:
N/A PROC CR SENS:
P NUMBER OF SENSCRS:
1 HOW PROCESSED:
EXPONENTIATED VALUE OF LOGARITHMIC INPUT SENSOR LOCATIONS-RCS LETDOWN LINE ALARM / TRIP SETPOINTS:
VARIABLE NI DETECTOR POWER SUPPLY Ct.TT-OFF POWER LEVEL:
N/A NI DETECTOR POWER SUPPLY TURN-ON FOWER LEVEL:
N/A INSTRUMENT FAILURE MODE:
N/A TEMPERATURE COMPENSATION FOR DP TRANSMITTERS:
LEVEL REFERENCE LEG:
N/A y
UNIQUE SYSTEM DESC:
Continuously monitors radiation level in the reactor coolant by means of a sample from the letdown line.
ATTACHMENT 2 REVISION
SUMMARY
FOR NORTH ANNA UNIT 2 i
.._m.
+
STATION: North Anna PRINTED UNIT: 2 05/I6/95 PWR DATA POINT LIBRARY REFERENCE FILE CHANGE REPORT CHANGED POINT R2RM214C AT 08:22 CN 05/16/95. CHANGES hTRE AS FCLLOWS:
DATE:
WAS: 03/21/91 IS: 05/16/95 ENGR UNIT / DIG STATES:
WAS: CPM IS: MR/HR MINIMUM INSTR RANGE:
WAS: 3.162 IS: 0.0 MAXIMUM INSTR RANGE:
WAS: 1.0E6 IS: 1.CE4 N
Ie*
I r