ML17298B209
| ML17298B209 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 08/21/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17298B210 | List:
|
| References | |
| ANPP-30290-EEVB, NUDOCS 8408240261 | |
| Download: ML17298B209 (7) | |
Text
REGULATORY INFORMATION DISTRIBUTION 'SYSTEM (RIDS)
ACCESSlON NBR:8408240261 DOC ~ DATE'4/08/21 NOTARXZED:
YES DOCKET FACIL:STN",50 S28 Palo Verde Nuclear Statjonr UniIt ii Arjzona Pubjj 05000528 "sTN;50-.,529 Palo verde, Nuclear stationi Uni.t 2'i Ar]zona Publi 05000529 "STN~SO 530 Palo Vei.de Nuclear Stations Unit ~3i, Arizona Publi 05000530 AUTH'@NAME,,
AUTHOR AFFIl.IATION VAN BRUNT'r E".E.
Arizona 'Publ ic,Ser vice.Co ~
REC IP ~ NAME1 RECIPIENT, AFFILIATION KNIGHTONg'G ~
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Arizona Public Service Company ANPP-30290-EEVBJr/KEJ August 21, 1984 Director of Nuclear Reactor Regulation Attention:
Mr. George Knighton, Chief Licensing Branch No.
3 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2, and 3
Categorization of Pressure Isolation Valves.
PVNGS ASME Section XI Pump and Valve Testing Program.
Docket Nos.
STN 50-528/529/530 File:
84-056-026 G.l.01.10
References:
(1) Letter from E. E. Van Brunt, Jr.,
APS, to G.
W. Knighton, NRC, dated February 17,, 1984 (ANPP-28907).
Subject:
Categorization of Pressure Isolation Valves.
(2)
Letter from E. E.
Van Brunt, Jr.,
APS, to T. Novak, NRC, dated October 1, 1982 (ANPP-21932).
Subject:
Rev.
1 to PVNGS ASME Section XI Pump and Valve Testing.
Dear Mr. Knighton:
A telecon was held on July 13, 1984 between the NRC staff and APS to discuss the reference (1) submittal concerning categorization of Reactor Coolant System (RCS) pressure isolation valves.
The staff stated that four (4) additional motor operated valves (MOV) (SIUV-651, SIUV-652, SIUV-653, SIUV-654) of the suction side of the Shutdown Cooling portion of the Safety Injection System (SDCS) were required to be categorized A or AC according to paragraph IVV-2100 of Section XI of the ASME Code since they perform an isolation function from the RCS to the SDCS.
Attachment 1 is Revision 2 to the PVNGS ASME Section XI Pump and Valve Testing Program which updates the reference (2) submittal and provides additional relief requests.
Included in Attachment 2 are proposed changes to Rev.
2 indicating that valves SIUV-651 through 654 are categorized A or AC as requested by the staff.
Also attached, please find one (1) set of drawings indicating appropriate boundary locations for preservice and inservice testing per the commitment made to the staff in reference (2).
Attachment 3 is a proposed revision to FSAR question 3A.15 concerning inter system LOCA, which incorporates these additional valves into the response.
Also discussed in the response are surveillance requirements applied to these valves.
The four (4) valves added to the list of RCS pressure isolation valves are two (2) 16" motor operated gate valves (MOV) located on the two suction lines.of the SDCS.
These valves are provided with keylock switches and positive position indication in the control room.
Also electrical interlocks will prevent the valves from 50
~
opening and will cause the valves to go shut at or above a designated pressure.
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. ~ Tg p 8P08Z40Z61 840821 "PDR ADOCK 05000528 8
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Mr. George Knighton ~
Pressure Isolation Va&es PVNGS ASME Section XI Pump and Valve Testing Program ANPP-30290 Page 2
Also located downstream are pressure relief valves providing overpressure protection.
Downstream of the second MOV away from the RCS on the low pressure side of the SDCS is a relief valve.
Discharge from the relief valve is to the Containment Recirculation
- Sump, which is located inside the Containment Building.
Since the four (4) MOV's added to the list of RCS pressure isolation valves are provided with position indication and interlocks, and are also provided with overpressure protection that discharges inside contain-
- ment, APS has applied limited surveillance requirements that are exceptions to the original staff requirement.
APS proposes the following surveillance requirement for MOV's SIUV-651 through 654:
Leak rates greater than 1 gpm but less than or equal to 5.0 gpm will be acceptable provided, for each subsequent
- test, the latest measured leak rate has not exceeded the rate determined by the previous test by an amount that reduces the margin between the measured leakage rate and the maximum permissible rate of 5.0 gpm by 50K or greater.
Leakage rates greater than 5.0 gpm are unacceptable.
In addition, leak tests shall be performed after the last disturbance at refueling outages and after maintenance or repair.
The requirement to test after each disturbance will not apply for the SDCS MOV suction pressure isolation valves (i.e.,
SIUV-651 through 654).
If accepted by the staff, this surveillance requirement will be included in the PVNGS Technical Specifications.,
The changes to the PVNGS Technical Specifications will be discussed during the Proof and Review period of that document.
If you have any further questions concerning this matter, please contact me.
Very truly yours, ZsV E. E.
Van Brunt, Jr.
APS Vice President Nuclear Production ANPP Project Director EEVBJr/KEJ/mb Attachment CC:
E. A. Licitra (w/a)
A. C. Gehr (w/a)
R.
Zimmerman (w/a)
G.
Hammer (w/a)
C r
ANPP-30290 August 21, 1984 STATE OP ARIZONA
)
) ss.
COUNTY OP MARICOPA)
I, Donald
- Karner, represent that I am Assistant Vice President, Nuclear Production of Arizona Public Service
- Company, that the foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority to do so, that I have read such document and know its
- contents, and that to the best of my knowledge and belief, the statements made therein are true.
Donald Karner Sworn to before me this day of 1984 '
My Commission Expires:
tdy Cc",nralssion Explr<s April6, $ 9S7 Notary Public
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