NUREG-0460, Forwards Safety Evaluation & Inel Rept EGG-NTA 8341, Providing Details & Basis for Concluding That Existing Intervals for on-line Functional Testing at Plant Should Result in High Reactor Trip Sys Availability.W/O Inel Rept

Forwards Safety Evaluation & Inel Rept EGG-NTA 8341, Providing Details & Basis for Concluding That Existing Intervals for on-line Functional Testing at Plant Should Result in High Reactor Trip Sys Availability.W/O Inel Rept

ML20248B972
Person / Time
Site:	Rancho Seco
Issue date:	06/06/1989
From:	Kalman G Office of Nuclear Reactor Regulation
To:	Firlit J SACRAMENTO MUNICIPAL UTILITY DISTRICT
References
RTR-NUREG-0460, RTR-NUREG-1000, RTR-NUREG-460 GL-83-28, TAC-54019, NUDOCS 8906090222
Download: ML20248B972 (3)

Text

, - - . .

3y .

y June 6,'1989

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Docket No. 50-312.- J Mr. Joe Firlit=

Chief Executive Office,-Nuclear ,

Rancho Seco Nuclear Generating Station  !

14440 Twin Cities Road

' Herald, California 95638-9799 la 1

Dear Mr. Firlit

SUBJECT:

SAFETY EVALUATION FOR GENERIC LETTER 83-28, ITEM 4.5.3, REACTOR-  !

TRIP RELIABILITY - ON-LINE FUNCTIONAL TESTING OF THE REACTOR i TRIP SYSTEM (TAC N0. 54019)

Gene;ic Letter.83-28, Item 4.5.3, required confirmation from all licensees and applicants that on-line. functional testing of the reactor trip system, including independent testing of the diverse trip feature, was being

~ '

performed.

By letter dated November 4, 1983, you submitted a response'to, Generic Letter

' 83-28, Item 4.5.3. Therein you indicated your endorsement of..the B&W,'0wners'~

. Groups Report.BAW-10167 and supplement 1 as.being applicable.to Rancho'Seco.'

The NRC staff, with the assistance'offour contractor, Idaho National Engineering Laboratory, has reviewed your response and the B & W Owners- Group's report.

.We conclude that.the existing intervals for on-line functional testing at Rancho Seco should result in' high reactor trip system availability.

The enclosed safety evaluation and contractor's report <(EGG-NTA 8341). provide the details and basis'for our conclusion. Therefore, we consider Generic Letter 83-28. Item 4.5.3 to be complete. 1 This completes all staff activities related to TAC No. 54019.

Sincerely, Original signed by T. Chan 'for George Kalman,' Project Manager Project Directorate V Division of Reactor Projects III IV, V and Special Projects Office of Nuclear Reactor Regulation E , . .

Enclosure:

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y . ., g ,/ June 6, 1989 Docket No. 50-312 Mr. Joe Firlit Chief Executive Office,~ Nuclear Rancho Seco Nuclear. Generating Station 14440 Twin Cities Road Herald, California 95638-9799 Dear Mr. Firlit

SUBJECT:

SAFETY EVALUATION FOR GENERIC LETTER 83-28, ITEM.4.5.3, REACTOR-TRIP RELIABILITY - ON-LINE FUNCTIONAL TESTING 0F THE REACTOR TRIP SYSTEM (TAC NO. 54019)

Generic Letter 83-28, Item 4.5.3, required confirmation from all licensees and applicants that on-line functional testing of the reactor trip system, including independent testing of the diverse trip feature, was being performed.

By letter dated November 4,1983, you submitted a response to Generic Letter 83-28, Item 4.5.3. Therein you indicated your endorsement of the B&W, Owners' Groups Report BAW-10167 and supplement I as being applicable to Rancho Seco.

The NRC staff, with the assistance of our contractor, Idaho National Engineering Laboratory, has reviewed your response and the B & W Owners Group's report.

We conclude that the existing intervals for on-line functional testing at Rancho Seco should result in high reactor trip system availability.

l The enclosed safety evaluation ar.d contractor's report (EGG-NTA 8341) provide the details and basis for our conclusion. Therefore, we consider Generic Letter 83-28, Item 4.5.3 to be complete.

This completes all staff activities related to TAC No. 54019.  ;

Sincerely, L George Ka , Project M Project Directorate V Division of Reactor Projects III IV, Y and Special Projects '

p Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/ encl:

See next page i

- __l_____________.______._____. _ __ --- -

. ,7 Mr. Joe Firlit Rancho Seco Nuclear Generating 1.: , '

Station 1

.CCi ..

Mr. , David S.' Kaplan, Secretary Mr. John Bartus and General Counsel Ms. JoAnne Scott Sacramento Municipal Utility District Federal Energy Regulatory Commission 6201 S Street 825 North Capitol Street, N. E.

P.O.. Box 15830 Washington, D.C. 20425 Sacramento,. California 95813 4 . Thomas A. Baxter, Esq. Ms. Helen Hubbard Shaw, Pittman, Potts & Trowbridge P. 0.. Box 63 2300 N Street, N.W. Sunol, California 94586 Washington, D.C. 20037 Mr. Steven Crunk-Manager, Nuc' lear Licensing Sacramento Municipal Utility District Rancho Seco Nu;1 ear Generating Station 14440 Twin Cities Road Herald,' California 95638-9799' Mr. Robert B. Borsum, Licensing Representative Babcock & Wilcox Nuclear Power Division 1700 Rockville Pike - Suite 525 Rockville, Maryland 20852 Resident Inspector / Rancho Seco c/o U. S. N. R. C.

14440 Twin Cities Road-Herald, California 95638 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Mr. Paul Szalinski, Chief Radiological Health Branch State Department of Health Services 714 P Street', Office Building 18 Sacramento, California 95814 Sacramento County Board of Supervisors 700 H Street, Suite 2450 Sacramento, California 95814 (10)

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