ML17305B281
| ML17305B281 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 12/14/1990 |
| From: | Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 102-01928-TRB-D, 102-1928-TRB-D, NUDOCS 9101030303 | |
| Download: ML17305B281 (8) | |
Text
ACCELERATED DIS~
BUTION DEMONST ION SYSTEM jI~
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS) gc -ED ACCESSION NB:9101030303 DOC. DATE: 90/12/14 NOTARIZED: NO DOCKE FACIL:50-1 Peach Bottom Atomic Power Station, Unit 1, Philadelph 050 171 50- 77 Peach Bottom Atomic Power Station, Unit 2, Philadelph 0
00277 5
278 Peach Bottom Atomic Power Station, Unit 3, Philadelph 5000278 AUTH.NAME AUTHOR AFFILIATION CONWAY,W.F.
Arizona Public Service Co.
(formerly Arizona Nuclear Power RECIP.NAME RECIPIENT AFFILIATION MARTIN,J.B.
Region 5 (Post 820201)
SUBJECT:
Provides addi info re current status of Post Restart Item 725 I 51 1
& 497
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DISTRIBUTION CODE:
IE26D COPIES RECEIVED:LTR I ENCL 0 SIZE:
TITLE: Startup Report/Refueling Report (per Tech Specs)
NOTES:License Exp date in accordance with 10CFR2,2.109(12/24/75).
D
/
05000171 A
RECIPIENT ID CODE/NAME SNPD LA NMSS/LLRB BYKOSKI,L INTERNAL: IRM TECH ADV NUDOCS-ABSTRACT RGN1 FILE 01 EXTERNAL: NRC PDR COPIES LTTR ENCL 11' RECIPIENT ID CODE/NAME PD1-2 LA PD1-2 PD SUH,GENE NRR CHATTERTON EG TE 02 NSIC COPIES LTTR ENCL D
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D NOTE TO ALL"RIDS" RECIPIENTS:
PLEASE HELP.US TO REDUCE WASTE!. CONTACT THE DOCUMENT CONTROL DESK,
'ROOM Pl-37 (EXT. 20079) TO EL'IMINATEYOUR NA'ME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T'NEED!
TOTAL NUMBER OF COPIES REQUIRED:
LTTR 15 ENCL D
D S
igt iS lg 4
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WILLIAMF. CONWAY EXECUTIVEVICEPRESIDENT
'NUCLEAR Arizona Public Service Company P.O. BOX 53999
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PHOENIX,'ARIZONA85072-3999 fiZa l.- ~~, f f;,'I I I ~
102-01928-TRB/DLK December 14, 1990 Mr. John B. Hartin, Regional Administrator U.
S. Nuclear 'Regul'atory Commission, Region V 1450 Mari'a Lane, 'Suite 210 Walnut Creek, CA 94546-5368
Reference:
Letter from W. F.
- Conway, APS, to J.
B. Martin, NRC, Dated June 15, 1990.
Dear Sir:
Subj ect:
Palo Verde 'Nucl'ear'enerating Station Post Restart Item File'0-056-026, On June 15, 1990, I updated'ou on the status of Post Restart Items prior to Unit 1 restart as described in the referenced letter.
The purpose of this letter is to provi'de you with additional information regarding. the current status of Post Restart Item No. 725, 511 and 497.
Record Number 725 "Initiate a.sampling inspection program to determine the effects of moisture and particles in the instrument air subsystem.
This program will also determine the affect of air quality in the instrument air subsystem, piping."
Status
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A. Maintenance Department Guideline which delineates the methods for maintenance personnel to gather and provide Engineering with the data.needed to evaluate the effects of moisture and particles in the instrument air subsystem became effective December 7,
1990.
Engineering will review the data for trends on a quarterly basis and will determine, after one year, whether or not to continue the program.
QioiQ3Q3 Q5QQQ171 Q3 9Q12i+
pDR ADOC pDR p
J' 4i 5
John B. Martin (Cont.)
Page 2
Record Number Descri tion 511 "Evaluate 'the need for a setpoint change on controllers 1'JCDNFIC0026, 0027 6 0028.
Present setpoint is 4000'PM.
Recommended setpoint 'is 4500 GPM.
This new, setpoint would raise the fluctuation band on the controller above the alarm setpoint."
.Status Note:
The reason for this evaluation was due to a concern regarding repeti'tive mini-flow high/lo alarm signals during transient conditions.
~ Sufficient system characteristic data during transient conditions are not available to perform a conclusive evaluation.
A design verification of condensate mini-flow recirculation is in progress.
System testing under transient-conditions will be performed during,the upcoming, Unit 3 refueling outage, 3R2.
The data collected will be used to support any needed system modification..
This evaluation is expected to be completed by May 26, 1991.
Descri tion 497 "Perform a Design Review. for the CEACS to determine vulnerabil'ity to single failure that results in a.reactor trip."
Status
~ Nuclear Engineering has performed a preliminary,review of the CEAC.system.
A review by an independent consultant is in progress.
Completion is anticipated 'by December.
31, 1990'.
'Nuclear Engineering will evaluate the results of the review.
and'omplete the design revi'ew of the 'CEAC system by January 31, 1991.
i/i IS
John B. Martin,(Cone.)
Page 3
Should you have any questions or require additional information, please contact Mr. T. R. Bradish of my staff.
Very truly yours, WFC/TRB/DLK/dmn-cc:
D. H. Coe C.
M. Trammell
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