ML17306B058
| ML17306B058 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 10/08/1992 |
| From: | Roehler ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Gould C NRC |
| References | |
| REF-PT21-92 NUDOCS 9210210029 | |
| Download: ML17306B058 (2) | |
Text
zCCLr.ERATED DrsTRrsrJTrON DEMONSZ'RATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:9210210029 DOC.DATE: 92/10/08 NOTARIZED: NO DOCKET I FACIL:~TN-5'D-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 STN-50-529 Palo Verde Nuclear Station, Unit,2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH.NAME AUTHOR AFFILIATION ROEHLER
'rizona Public Service Co. (formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION GOULD,C.
NRC -'No Detailed AffiliationGiven NOTES:STANDARDIZED PLANT Standardized plant.
Standardized plant;
SUBJECT:
Part 21 rept advising that preliminary evaluation of
-I Rosemount Part 21 notification determined that change in systematic static pressure span for pressure differential 0
transmitters may result in increase ih indicated power.
DISTRIBUTION CODE:
IE28D COPIES RECEIVED:LTR 0 ENCL
( SIZE:
/
S TITLE: Licensee Event Report (LER) 6 Part 21 Rept Combination (50 Dkt)
/
05000528 05000529 A
05000530 RECIPIENT ID CODE/NAME PD5 LA TRAMMELLFC INTERNAL: ACNW AEOD/DOA AEOD/ROAB/DSP NRR/ADP/DRP14E4 NRR/DET/ECMB 9H NRR/DET/ESGB 8D NRR/DLPQ/LPEB10 NRR/DOEA/OGCBll NRR/DREP/PRPB11 NRR/DRIS/RVIB9D NRR/DST/SELB 8D NRR/DST/SPLB8D1 NSIC SILVERFE RES/DSIR/EIB RGN 1
RGN 3
RGN 5
CO LT PIES TR ENCL 1
1 RECIPIENT ID CODE/NAME PD5 PD ACRS AEOD/DSP/TPAB DEDRO NRR/ADSP DIR NRR/DET/EMEB 7E NRR/DLPQ/LHFB11 NRR/DOEA/OEABll NRR/DREP/PRAB10 NRR/DRIS/RSIB9A NRR/DST 8E2 NRR/DST/SICB8H3 RR/J)5T SRXB 8E EG ILE 02 RES DSR/HFB/HFS RGN 2
RGN 4
RGN5 FILE 01 COPIES LTTR ENCL EXTERNAL'G6tG STUART F V ~ A L ST LOBBY WARD NSIC MAYSFG NUDOCS FULL TXT NOTE TO ALL R]DS RECIPI NTS:
4 INPO RECORD CTR.
1 NRC PDR 1
NS1C MURPHYFG A PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK.
ROOM PI-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRIBUTION.
LISTS FOR DOCUMENTS YOU DON'T NEED!
0 TOTAL NUMBER OF COPIES REQUIRED:
LTTR +
ENCL
POWER REACTS EVENT NUMBER:
24396 FACILITY PALO VERDE UNIT:
fl}
= f2} [3}
RX TYPE: [1} CE~ [2} CE, [3} CE NRC NOTIFZED BY: ROEHLER H{} OPS OFFICER:
CHAUNCEY GOULD REGION 5
STATE: AZ NOTZFICATZON DATE: 10/08/92 NOTIFICATION TIME: 16:57 fET}
EVENT DATE 10/08/92 KANT TIME
= llz45[MST}
LAST UPDATE DATE:
10/08/92 NOTIFICATIONS EMERGENCY CLASS:
NOT APPLICABLE 10 CFR SECTION:
NLTR LICENSEE 24 HR REPORT OLSON UNIT SCRAM CODE RX CRIT INIT PWR INIT RX MODE CURR PWR CURR RX MODE 1
. 2 3
N N
N Y
Y N
100 100 0
POWER OPERATION POWER OPERATION REFUELING 99 POWER OPERATION 99 POWER OPERATION 0
REFUELING EV1WZ TEXT THE LICENSEE REPORTED A POTENTIAL VIOLAT1ON OF A LICENSE CONDITION.
ON 8/31/92 ROSEMOUNT INC SENT THE LICENSEE A PART 21 NOTIFICATION PROVIDING REVISED SYSTEMATIC STATIC PRESSURE SPAN EFFECT NUMBERS FOR THE MODEL 1152 DIFFERENTIAL AND HZGH LINE PRESSURE DIFFERENTIAL TRANSMITTERS.
THE LICENSEE'S ENGINEERING DEPARTMENT HAS COMPLETED A PRELIMINARY EVALUATION OF THIS CHANGE. THE PRELIMINARY EVALUATION DETERMINED THAT THIS CHANGE MAY RESULT IN AN APPROXIMATE 0.24 INCREASE IN INDICATED POWER AND MAY HAVE RESULTED IN ALL THREE UNITS EXCEEDING THE MAXIMUM POWER LEVEL ZN THE FACILITY OPERATING LICENSE.
BASED ON THE PRELIMINARY EVALUATIONS UNITS 1
& 2 HAVE REDUCED POWER TO APPROXIMATELY 99.54.
ZT HAS ALSO BEEN DETERMINED THAT THIS CONDITION IS NOT SAFETY SIGNIFICANT. THE SAFETY ANALYSIS ASSUMES 1024 POWER.
THE 0.24 INCREASE DOES NOT INCREASE THE SENSITIVITY ABOVE 24.
BASED ON THE FINAL EVALUATION OF THE ROSEMOUNT PART 21, THE LICENSEE WILL SUBMIT AN LER FOR THIS EVENT OR RETRACT THE EVENT. THE RI WAS INFORMED.
9210210029