ML20092C560

Informs NRC of Changes Made to ERDS at SONGS Units 2 & 3. ERDS Changes for SONGS Units 2 & 3 Encl

ML20092C560
Person / Time
Site:	San Onofre
Issue date:	09/08/1995
From:	Marsh W SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9509130044
Download: ML20092C560 (7)

Text

.

4 P

S fE Southem Califomia Edison Company P. O. DOX 128 BAN CLEMENTE. CALWORNIA92674 0128 September 8, 1995 J I f ", a"o^". E.n...

y?LTlo,

-.o U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C.

20555-Gentlemen:

Subject:

Docket Nos. 50-361 and 50-362 Emergency Response Data System San Onofre Nuclear Generating Station Units 2 and 3 This letter is to inform the NRC of changes that have been made to the Emergency Response Data System (ERDS) at San Onofre Nuclear Generating Station Units 2 and 3.

These changes were discussed with John Jolicour of the NRC staff on August 15 and 17, 1995. As required by'10CFR50 Appendix E, Section VI.3.a any hardware and software changes that affect the transmitted data points identified in the ERDS Data Point Library must be submitted to the NRC within 30 days after the changes are completed.

On July 3,1995 the quarterly test of the ERDS for the San Onofre Nuclear Generating Station Unit 2 (SONGS 2) with the NRC failed. On July 6, 1995 it was determined that the SONGS 2 test failure was caused by modifications Monitoring System (pressurizer pressure data point in the Critical Function implemented on the CFMS) during the SONGS 2 Cycle 8 refueling outage. Since the ERDS reads the data points from the CFMS, the modification to the pressurizer pressure data point on CFMS affected the ERDS. During the test ERDS did not recognize the modified data point, and selected an incorrect data point, radiation monitoring, as pressurizer pressure.

Corrective actions have been initiated to ensure this or similar situations do not occur in the -

future. Enclosure 1 provides the change to the ERDS data base for SONGS 2.

Also included as Enclosure 2 is the change to the ERDS database for SONGS 3.

Changes have also been made to the ERDS Hi Log Power Level data point.

Excore linear and log power signals have been added to the CFMS.

This results in a required change to a data point on the ERDS database.

The excore log power signal data point identification will be changed from XJ002C to XJ0001C and the description from Hi Log Power Level to Log Power Level Channel C.

Provided as Enclosures 3 and 4 are the changes for the SONGS 2 and 3 ERDS data base, respectively.

o 13C021 y

~ 9509130044 950908 PDR ADOCK 05000361

{. g(

,L____

PDR.. _.

e

.A f[5 Document Control Desk The above described changes were implemented on the ERDS SONGS 2 data base on August 9, 1995. The changes will be completed on the ERDS SONGS 3 data base prior to SONGS 3 return to power following the Cycle 8 refueling outage. This letter is the formal 10CFR50 Appendix E Section VI.3.a notification of the changes to the ERDS data base for SONGS 2, which have been completed, and for the changes to the EROS data base for SONGS 3 which will be completed before the end of the current refueling outage.

If you have any further questions regarding this matter please let me know.

Very truly yours, Mbh.

Enclosures cc:

L. J. Callan, Regional Administrator, NRC Region IV J. Dyer, Director, Division of Reactor Projects, Region IV K. E. Perkins, Jr., Director, Walnut Creek Field Office, NRC Region IV l

J. A. Sloan, NRC Senior Resident Inspector, San Onofre Units 2 & 3 M. B. Fields,_NRC Project Manager, San Onofre Units 2 and 3

\\

,4-4 h-a

.e D

A

.E d.

.a Je e

j o

ENCLOSURES 1 THROUGH 4 ENERGENCY RESPONSE DATA SYSTEN CHANGES FOR SAN ONOFRE NUCLEAR GENERATING STATION UNITS 2 AND 3 i

i

)

1 6

d ENOMMENE 1 e

DWO M0. 90062 REY. 1 t'

PWR DATA POINT LIBRARY REFERENCE FILE DATE.

July 8, 1995 REACTOR UNIT:

802 DATA FEEDER:

8021 J

NRC EROS PARAMETER:

RCS PRESSURE POINT ID:

NPZRA PLANT $PEC POINT DESC.: PIR PRESSURE WIDE RANGE j

DENERIC/COND DESC.:

RC8 PRESSURE ANALD0/ DIGITAL:

A ENOR UNIT 8/DIQ STATES: PSIA ENOR UNITS CONVER8!DN: N/A MINIMUM INSTR RANGE:

0 i

MAXIMUM INSTR RANGE:

3000 ZERO POINT

REFERENCE:

N/A REFERENCE POINT NOTES: N/A PROC DR SEN8:

8 NDNSER OF SENSOR $

1 HOW PROCESSED:

N/A SENSOR LOCATIONS:

INSIDE CTMNT ON PRESSURIZER ALARM / TRIP 8ET POINTS: N/A 4

NI DETECTOR POWER SUPPLY CUT-OFF POWER LEVEL:

N/A j

NI DETECTOR POWER SUPPLY TURN ON POWER

=

LEVEL:

N/A i

INSTRUMENT FAILURE j

MODE:

READS ZERO OR LESS i

TEMPERATURE COMPENSATION l

FOR DP TRANSMITTER 8:

a LEYZL REFERENCE DESC.:

N/A t

UNIQUE SYSTEM DESC.:

N/A PWR DATA POINT LIBRARY REFERENCE FILE I

DATE:

April 22,1991 i

0 1

i I

EMareUME2 DWO NO 90062 REV. 1 9

PWR DATA POINT LIBRARY REFERENCE FILE DATE:

JULY 6,1995 REACTOR UNIT:

803 DATA FEEDER:

8031 NRC ERDS PARAMETER:

RC8 PRESSURE POINT ID RPZRA PLANT 8PEC POINT DESC.: RCS PRESSURE GENERIC /COND DESC.:

REACTOR COOLANT SYSTEM PRES $URE ANALOG / DIGITAL:

A ENOR UNIT 8/DIO STATES: PSIA ENOR UNITS CONVERSION: N/A MINIMUM INSTR RANGE:

0 MAKIMUM INSTR RANGE:

3000 ZERO POINT RLFERENCE:

N/A REFERENCE POINT NOTES:

N/A PROC DR SENS:

8 NUMBER OF SENSOR $s 1

HOW PROCESSED:

N/A SENSOR LOCATIONS:

INSIDE CTMNT ON PRE 88URIZER ALARM / TRIP SET POINTS:

N/A NI DETECTOR POWER SUPPLY CUT-OFF POWER LEVEL:

N/A NI DETECTOR POWER SUPPLY TURN ON POWER LEVEL:

N/A INSTRUMENT FAILURE MODE:

READS ZERO OR LESS TEMPERATURE COMPENSATION FOR DP TRANSMITTERS:

LEVEL REFERENCE DESC.:

N/A UNIQUE SYSTEM DESC.:

N/A 75

~

1 1

b ENCLOSURE 3 PWR DATA POINT LIBRARY REFERENCE FILE DATE:

July 14,1995 REACTOR UNIT:

302 i

DATA FEEDER:

3021 i

NRC EROS PARAMETER:

NI POWER RNO POINT ID:

XJ0001C PLANT SPEC POINT DESC.: LOG POWER LEVEL CHANNEL C OENERIC/COND DESC.:

NI POWER RNO ANALOO/ DIGITAL:

A ENOR UNITS /DIO STATES: 1 ENOR UNITS CONVERSION:

LOG MINIMUM INSTR RANGE:

2E 3 MAXIMUM INSTR RANGE:

200 ZERO POINT

REFERENCE:

N/A REFERENCE POINT NOTES: N/A PROC OR SENS:

3

(

NUMBER OF SENSORS:

1 HOW PROCESSED:

N/A-SENSOR LOCATIONS:

W SIDE REACTOR VESSEL THIMBLE #3 ALARM / TRIP SET P01NTS: N/A NI DETECTOR POWER SUPPLY CUT-OFF POWER LEVEL:

N/A NI DETECTOR POWER SUPPLY TURN ON POWER LEVEL:

N/A INSTRUMENT FAILURE MODE:

DISPLAYS LAST 0000 READING TEMPERATURE COMPENSATION FOR DP TRANSMITTERS:

LEVEL REFERENCE DESC.:

N/A UNIQUE SYSTEM DESC.:

DETECTOR TYPE: FISSION CHAMBERS 23 j

8 4

e 4

.b

ENCLOSURE 4 PWR DATA POINT LIBRARY REFERENCE FILE i

DATE:

July 14, 1995 REACTOR UNIT 803 5

DATA FEEDER:

8031 NRC ERDS PARAMETER:

NI POWER RNO

+

POINT ID:

XJ00010 l

4 PLANT SPEC POINT DESC.: LOG POWER LEVEL CHANNEL C OENERIC/COND DESC.:

NI POWER RNO 4

ANALOQ/ DIGITAL:

A l

ENOR UNIT 8/ DIG STATES: %

i ENOR UNIT 8 CONVERSION:

LOG t

MINIMUM INSTR RANGE:

2E 8 MA11 MUM INSTR RANGE:

200 ZERO POINT

REFERENCE:

N/A REFERENCE POINT NOTES:

N/A 1

j PROC OR SENS:

8 I

NUMBER OF SENSOR 8:

1 i

HOW PROCESSED:

N/A i

SENSOR LOCATIONS:

EAST SIDE REACTOR VESSEL THIMBLE #3 ALARM / TRIP SET POINT 8:

N/A t

i NI DETECTOR POWER SUPPLY CUT-OFF POWER LEVEL:

N/A l

NI DETECTOR POWER i

j SUPPLY TURN-ON POWER t

LEVEL:

N/A INSTRUMENT FAILURE MODE:

DISPLAYS LAST 000D READING TEMPERATURE COMPENSATION FOR DP TRANSMITTERS:

d LEVEL REFERENCE DESC.:

N/A UNIQUE SYSTEM DESC.:

DETECTOR TYPE: FISSION CHAM 8ERS 94

.