L-07-090, Emergency Response Data System
| ML071970038 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/10/2007 |
| From: | Lash J FirstEnergy Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-07-090 | |
| Download: ML071970038 (3) | |
Text
ýFENOC FirstEnergy Nuclear Operating Company James H. Lash 724-682-5234 Site Vice President Fax.: 724-643-8069 July 10, 2007 L-07-090 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Emergency Response Data System In accordance with 10 CFR 50, Appendix E, Section VI, changes to the Beaver Valley Power Station (BVPS) Unit No. 1 Data Point Library (DPL) for the Emergency Response Data System (ERDS) are provided in the Attachments. Attachment 1 provides the DPL page for the data point that has been changed. The DPL changes are associated with subcooling margin alarm limit changes made to the BVPS Unit No. 1 In Plant Computer (IPC). Attachment 2 provides a summary of the changes made for this data point.
There are no regulatory commitments contained in this letter. If there are any questions or if additional information is required, please contact Mr. Thomas A. Lentz, Manager -
FENOC Fleet Licensing, at (330) 761-6071.
Sincerely, Attachments:
- 1. ERDS Data Point Library Changes
- 2. Summary Of Changes To Data Point Library c:
Ms. N. S. Morgan, NRR Project Manager (w/o enclosure)
Mr. D. L. Werkheiser, NRC Senior Resident Inspector Mr. S. J. Collins, NRC Region I Administrator Mr. D. J. Allard, Director BRP/DEP Mr. L. E. Ryan (BRP/DEP)
AD2
ý'4 ((Z-tz
L-07-090 Page 1 of 1 BEAVER VALLEY POWER STATION ERDS DATA POINT LIBRARY 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 Location:
Alarm/Trip Set Points:
NI Detector Power Supply Cut-Off Power Level:
NI Detector Power Supply Turn-ON Power Level:
Instrument Failure Mode:
Temperature Compensation for DP Transmitters:
Level Reference Leg:
Unique System Desc.:
6/13/2007 BV1 IPC SUB-MARGINI U0094 SUBCOOL (AVG 5 HI T/C) ICCM AVG SATURATION TEMP - HIGHEST CET A
DEGF N/A
-35 200 N/A N/A P
53 FROM TRAIN A & TRAIN B ICCM SEE UNIQUE SYSTEM DESCRIPTION FIELD SEE UNIQUE SYSTEM DESCRIPTION FIELD N/A N/A LOW N
N/A The average of Train A and Train B ICCM subcooling (AVG 5 HI T/C) points.
The ICCM computes subcooling based on the average of the 5 hottest Incore T/Cs and sends these calculated values to the "IPC" as 1 to 5 volt outputs from the ICCM Demultiplexer. The two "IPC" points are then averaged together to produce U0094.
LOW ALARM = 15 DEGF (Mode 1)
LO-LO ALARM = 10 DEGF (Mode 1)
LOW ALARM = -35 DEGF (Modes 2 thru 4)
HIGH ALARM = 200 DEGF (Modes 1 thru 4)
No alarms in Modes 5 and 6
L-07-090 Page 1 of 1
SUMMARY
OF CHANGES TO DATA POINT LIBRARY (DPL)
Reactor DPL Description of Change(s)
Unit Point BV1 U0094 DATE changed to 06/13/2007 UNIQUE SYSTEM DESC.: Added the following lines:
LOW ALARM = 15 DEGF (Mode 1)
LO-LO ALARM = 10 DEGF (Mode 1)
UNIQUE SYSTEM DESC.: Replaced the following line:
LOW ALARM = -35 DEGF (Modes 1 thru 4)
With:
LOW ALARM = -35 DEGF (Modes 2 thru 4)