ML061040266
| ML061040266 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 04/10/2006 |
| From: | Schinner E Constellation Energy Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML061040266 (4) | |
Text
Calvert Cliffs Nuclear Power Plant Constellation Generation Group, LLC 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 l Constellation Energy April 10, 2006 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
SUBJECT:
Document Control Desk Calvert Cliffs Nuclear Power Plant Unit No. 1; Docket No. 50-317 Emermency Response Data System The attached revision to the Emergency Response Data System (ERDS) Data Point Library for the Calvert Cliffs Nuclear Power Plant is provided pursuant to 10 CFR Part 50, Appendix E, Section VI.:3.a.
The table below provides a brief summary of the changes:
.Previous Sensor New Sensor Point Identifier Unit Description Pre aion Loator Location Location SP2112 1
Reactor Vessel Level 185 inches 160 inches S P2112 1
Reactor Vessel Level 153 inches 151 inches The "before" and "after" ERDS Data Point Library sheets are attached.
Should you have questions regarding this matter, please contact Mr. L. S. Larragoite at (410) 495-4922.
Very truly yours, Edward N. Schinner Director - Emergency Planning ENS/CAN/bjd
Attachment:
Emergency Response Data System Data Point Library (2 pages) cc:
P. D. Milano, NRC S. J. Collins, NRC Resident Inspector, NRC R. I. McLean, DNR J. R. Jolicoeur, NRC 40D Lc
ATTACHMENT (1)
EMERGENCY RESPONSE DATA SYSTEM DATA POINT LIBRARY Calvert Cliffs Nuclear Power Plant, Inc.
April 10, 2006
PWR Data Point Library Reference File Report Date:
Page:
04-03-2006 2
Date:
Reactor Unit:
Data Feeder:
NRC ERDS Parameter:
Point ID:
Plant Specific Point
Description:
Generic / Condition
Description:
Analog I Digital:
ENGR Units / Digital States:
ENGR Units Conversion:
Minimum Instrument Range:
Maximum Instrument Range:
Zero Point
Reference:
Referonce Point Notes Proc or Sens:
Number of Sensors:
How Processed:
Sensor Locations Alarm / Trip Setpoints:
NI Detector Power Supply Cut-Off Power Level:
NI Detector Power Supply Turn-on Power Level:
Instrument Failure Mode:
Temperature Compensation for DF Transmitters:
Level Reference Leg:
Unique System
Description:
3/10/2006 CC1 CC11 REC VES LEV SP2112 REACTOR VESSEL LEVEL REACTOR VESSEL WATER LEVEL A
INCHES N/A N/A N/A FAP N/A P.
32 RE:USD (REFERENCE UNIQ SYS DESC) 160,151,112,71,50,29,19, & 10" ABOVE FAP VOID DETECTED N/A N/A N/A N
N/A 8 HEATED JUNCTION THERMOCOUPLES (HJTC) ARE SPACED STRATEGICALLY NEAR THE VICINITY OF ONE HOT LEG OUTLET NOZZLE.
AS HJTC IS UNCOVERED THE LVL THAT THE REACTOR HEAD IS UNCOVERED IS INDICATED IN INCREMENTAL STEPS. THE 1 ST HJTC IS 160" FROM TOP OF FUEL ALIGNMENT PLATE(FAP): 8TH HJTC IS 10" FROM FAP; 5TH HJTC IS 50" FROM FAP WHICH IS THE CENTER LINE OF THE F:OT LEGS. HOW PROCESSED: WHEN LVL DECREASES A VOID IN THE HJTC WILL PROVIDE AN OUTPUT SIGNAL FOR THAT SPECIFIC HJTC POSITION.
i.
PWR DATA POINT LIBRARY REFERENCE FILE REV DATE: 11/04/92 PAGE 2
DATE:
REACTOR UNIT:
DATA FEEDER:
NRC ERDS PARAMETER:
POINT ID:
PLANT SPEC POINT DESC.:
GENERIC/COND DESC.:
ANALOG/DIGITAL:
ENGR UNITS/DIG STATES:
ENGR UNITS CONVERSION:
MINIMUM INSTR RANGE:
MAXIMUM INSTR RANGE:
ZERO POINT
REFERENCE:
REFERENCE POINT NOTES:
PROC OR SENS:
NUMBER OF SENSORS:
HOW PROCESSED:
SENSOR LOCATIONS:
ALARM/TRIP SET POINTS:
NI DETECTOR POWER SUPPLY CUT-OFF POWER LEV:
NI DETECTOR POWER SUPPLY TURN-DN POWER LEV:
INSTRUMENT FAILURE MODE:
TEMPERATURE COMPENSATION FOR DP TRANMITTERS:
LEVEL REFERENCE LEG:
UNIQUE SYSTE4 DESC.:
07/
CC1 CCO REC SP2 REA REA 05/91 VES LEV 112 CTOR VES' CTOR VES!
'EL LEVEL 3EL WATER LEVEL A
INCHES N/A N/A N/A FAP N/A P
32 RE:USD (REFERENCE UNIQ SYS DESC) 185,153,112,71,50,29,19, & 10" ABOVE FAP VOID DETECTED N/A N/A N/A N
N/A 8 HEATED JUNCTION THERMOCOUPLES (HJTC)
ARE SPACED STRATEGICALLY IN A VACANT CEA SHROUD ASSEMBLY NEAR THE VICINITY OF ONE HOT LEG OUTLET NOZZLE.
AS HJTC IS UNCOVERED THE LVL THAT THE REACTOR HEAD IS UNCOVERED IS INDICATED IN INCREMENTAL STEPS.
THE 1ST HJTC IS 185" FROM TOP OF FUEL ALIGNMENT PLATE(FAP); 8TH HJTC IS 10" FROM FAP; 5TH HJTC IS 50" FROM FAP WHICH IS THE CENTER LINE OF THE HOT LEGS.
HOW PROCESSED:
WHEN LVL DECREASES A VOID IN THE HJTC WILL PROVIDE AN OUTPUT SIGNAL FOR THAT SPECIFIC HJTC POSITION.