ML17298A444

Forwards Request for Info on Tech Spec Setpoint Methodology. Notification of Planned Response Date Requested

ML17298A444
Person / Time
Site:	Palo Verde
Issue date:	06/20/1983
From:	Knighton G Office of Nuclear Reactor Regulation
To:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
References
NUDOCS 8307070437
Download: ML17298A444 (8)

Text

/e JUN S Ol983 DISTRIBUTION document Control 50-528/529/530J NRC P.DR L PDR NSIC LB¹3 Reading JLee EALicitra

Attorney, OELD

Jordan, IE Taylor, IE ACRS (16)

Docket Nos.:

50-628,60-529 and 60-530 Hr. E. E. Van Brunt, Jr.

Vice President - Nuclear Projects Arizona Public Service Company Post Office Box 21666 Phoenix. Arizona 85036

Subject:

Request for Information on Setpo~int Methodology - Palo Verde To expedite the review of the setpoint methodology used to develope the Palo Verde Technical Specifications, we ask that you provide the information requested in the enclosure.

Sincerely,

~iginal signed by Ge orge rr Knighton George W. Knljghton, Chief Licensing Branch No.

3 Division of Licensing

Enclosure:

As stated cc:

See next page h

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USQPO: 1081-33~050 O FF IClAL R EGO R D CO P Y NRG FORM 318 (10-80) NRCM 0240 Please advise us as to when you plan to respond to this request.

If you have any questions regarding the request, you should contact tlanny Licitra, the Licensing Project Nanager.

1r

Pai Verde Hr.

E.

E.

Van Brunt, Jr.

Vice President

- Nuclear Projects Arizona Public Service Company P. 0.

Box 21666 Phoenix, Arizona 85036 CC:

Arthur C. Gehr, Esq.

Snell 5 Wilmer 3100 Valley Center Phoenix, Arizona 85073 Charles S.

Pierson Assistant Attorney General 200 State Capitol 1700 West Washington Pho'enix, Arizona 85007 Charles R. Kocher, Esq'., Assistant Counsel James A. Boeletto, Esq.

Southern California Edison Company P.

0.

Box 800

Rosemead, California 91770 Vs. tiargaret Walker Deputy Director of Energy Programs Economic Planning and Development Office 1700 West Washington Phoenix, Arizona 85007 Mr.

Rand L. Greenfield Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503 Resident Inspector Palo Verde/NPS U. S. Nuclear Regulatory Commission P.

0.

Box 21324 Phoenix, Arizona 85001 Regional Adminstrator-Region V

U.

S. Nuclear Regulatory Commission 1450 maria Lane Suite 210 Walnut Creek, Cal iforni a 94596 Kenneth Berlin, Esq.

Winston 5 Strawn Suite 500 2550 N Street, N.

W.

Washington, D.

C.

20037 Lynne Bernabei Government Accountability Project of the Institute for Policy Studies 1901 gue Street, N.

W.

Washington, D.

C.

20009 tls. Patricia Lee Hourihan 6413 S. 26th Street Phoenix.. Arizona 85040

RE UEST FOR INFORMATION ON THE TECHNICAL SPECIFICATION To expedite the review of the setpoint methodology used to develop the Palo Verde technical specifications, we request that you provide, in an expeditious

manner, a detailed discussion on the methodology used to establish the technical specification trip setpoints and allowable values for the Reactor Protection System and Engineered Safety Feature channels assumed to operate in the FSAR Chapter 15 analyses.

Include the following information:

(a)

The trip setpoint and allowable value for the technical specifications, (b)

The analytical limit of the monitored process variable prior to which a desired action is to be initiated, (c)

The safety limit necessary to protect the integrity of the physical barriers which guard against the uncontrolled re-1 ease of radi oacti vity, (d)

The margin (i.e., the difference between the safety limit and the setpoint less the combined channel error allowance),

(e)

The values assigned to each component of the combined channel error allowance (e.g., modeling uncertainties, analytical un-certainties, transient overshoot, response time, trip unit C

I I

setting accuracy, test equipment

accuracy, primary element

accuracy, process measurement

accuracy, sensor calibration

accuracy, sensor drift, nominal and harsh environmental allowances, trip unit drift), the basis for these

values, and the methodology used to combine these errors.

(f)

Identify any trip for which the setpoint and allowable value in the currently proposed technical specifications have been assigned best estimate values and for which you do not have an analysis of errors and/or uncertainties to confirm that the trip function will occur before the actual value of the measured parameter exceeds that assumed in the plant safety analysis.

Provide justification for this nonanalytical approach.

/

C~

J%

1

Nr.

E.

E.

Van Brunt, Jr.

Vice President

- Nuclear Projects Arizona Public Service Company P. O..Box 21666.

Phoenix, Arizona 85036 Pal

'erde OCT 2,0 1983 cc:

Arthur C. Gehr, Esq.

Snell 5 h'ilmer 3100 Valley Center Phoenix, Arizona 85073 Charles S. Pierson Assistant Attorney General 200 State Capitol 1700 Hest Washington Phoenix, Arizona 85007 Charles R.

i:o h r, Esq., Assistant.

Counsel James A. Boeletto, Esq.

Southern California Edison Company P.

0.

Box 800

Rosemead, California 91770 t':s. )margaret kal ker Deputy Director of Energy Programs Economic Planning and Development Office 1700 l.'est ';,'ashington Phoenix, Arizona 85007

, Regional Adminstrator-Region V

U. S. Nuclear Regulatory 'Commission 1450 t'aria Lane Sui te 210 Halnut Creek, Cal ifornia 94596 Venneth Berlin, Esq.

winston 5 Strawn Suite 500 2550 th Street, N.

H.

Hashington, D.

C.

20037 Lynne Bernabei Government Accountability Project of the Institute for Policy Studies 1901 gue Street, N.

H.

Hashington, D.

C.

20009 hr.

Rand L. Greenfield Assistant Attorney 6 neral Bataan hemorial Building Santa Fe,'ew mexico 87503 Resident Inspector Palo Verde/NPS U.

S. Nuclear Regulatory Commission P.

0.

Box 21324 Pnoenix, Arizona 85001 l1s. Patricia Lee Hourihan 6413 S. 26th Street Phoeni.x:, Arizona 85040