ML18046A343

Forwards Request for Addl Info to Complete Review Re Adequacy of Station Electric Distribution Sys Voltages at Facility.Rating of Class IE Motor Contactors & Upper & Lower Limits for Continuous Operation Required

ML18046A343
Person / Time
Site:	Palisades
Issue date:	12/12/1980
From:	Crutchfield D Office of Nuclear Reactor Regulation
To:	Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
References
LSO5-80-12-032, LSO5-80-12-32, NUDOCS 8101280472
Download: ML18046A343 (5)

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Locai PDR TERA OELD Dock et No. 50-255 LS05-80-12-032

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JHeltemes GCwalioa Gray F' Xtr DECEMBER. 1 2 1980.

Mr~ David P. Hoffman Nuclear Licensing Administrator Consumers Power Co.rrpany 212 West Michigan Avenue Jackson, Michigan 49201

Dear Mr. Hoffman:

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SUBJECT:

• ADEQUACY. OF STATION -ELECTRIC.DISTRIBUTION SYSTEM VOLTAGES In-the course of' our ~eview of you.r responses to ou~ letter dated August 8, 19.79, regarding the subje~t matter, we ffod that'we. ~quire additional information to co~let~.our review!.. The *additional :

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. information needed is 1dent1fted in. the enclosure.. to this letter. :.c.

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.. Please.respond within 4~ day-s.of your receipt 'of this letter.~-.*.

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Docket No. 50-255 LSOS-80-12-032 Mr. David P. Hoffman Nuclear Licensing Administrator Consumers Power Co!ll>any 212 West Michigan Avenue Jackson, Michigan 49201

SUBJECT:

ADEQUACY OF STATION ELECTRIC DISTRIBUTION SYSTEM VOLTAGES In the course of our review of your responses to our letter dated August 8, 1979, regarding the subject matter, we find that we require additional information to CO!ll>lete our review.

The additional information needed is identified in the enclosure to this letter.

Please respond within 45 days of your receipt of this letter.

Enclosure:

Request for Additional Information cc w/enclosure:

See next page Sincerely,

~71/. *~

Dennis M. Crute field, Operating Reactors Bra Division of Licensing

Mr. David P. Hoffman cc w/enclosure:

Mr. Paul A. Perry, Secretary Consumers Power Coflllany 212 West Michigan Avenue Jackson, Michigan 49201 Judd L. Bacon, Esquire Consumers Power Coflllany 212 West Michigan Avenue Jackson, Michigan 49201 Joseph Gallo, Esquire Isham, Lincoln & Beale 1120 Connecticut Avenue Room 325 Washington, D. C.

20036 Peter W. s*teketee, Esquire 505 Peoples Building Grand Rapids, Michigan 49503 Alan S. Rosenthal, Esq., Chairman Atomic Safety & Licensing Appeal Board

u. s. Nuclear Regulatory Conmission Washington, D. C.

20555 Mr. John O'Neill, II Route 2, Box 44 Maple City, Michigan 49664 Charlevoix Public Library 107 Clinton Street Charlevoix, Michigan Chairman County Board of Supervisors Charlevoi X: County Charlevoix, Michigan 49720 Office of the Governor (2)

Room 1 - Capitol Building Lansing, Michigan 48913 Director, Criteria and Standards Division Office of Radiation Programs (ANR-460)

U. S. Environmental Protection Agency Washington, D. c.

20460 December 12, 1980 U. S. Environmental Protection Agency Federal Activities Branch Region V Office ATTN:

EIS COORDINATOR 230 South Dearborn Street Chicago, Illinois 60604 Herbert Grossman, Esq., Chairman Atomic Safety and Licensing Board

u. S. Nuclear Regulatory Conmission Washington, D. C.

20555 Or. Oscar H. Paris Atomic Safety and Licensing Board U. S. Nuclear Regulatory Coumission Washington, D. c. 20555 Mr. Frederick J. Shon Atomic Safety and Licensing Board

• u. S. Nuclear Regulatory CofT111ission Washington, D. c.

20555 Big Rock Point Nuclear Power Plant ATTN:

Mr. c. J. Hartman Plant Superintendent Charlevoix, Michigan 49720 Christa-Maria Route 2, Box 108C Charlevoix, Michigan 49720 William J. Scanlon, Esquire 2034 Pauline Boulevard Ann Arbor, Michigan 48103 Resident Inspector Bi g Rock Poi nt Plant c/o U.S. NRC RR #3, Box 600 Charlevoix, Michigan 49720 Mr. Jim E. Mills Route 2, Box 108C

• Charlevoix, Michigan 49720 Thomas S. Moore Atomic Safety & Licensing Appeal. Board u *. S. Nuclear Regulatory. Conmission Washington, D. c.

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Mr. David P. Hoffman cc w/enclosure:

. Dr. John H *. Buck 3 -

• Atomic Safety and.Licensing Appeal Bo.a rd U.

S~ Nuclear Regulatory Co111t1ission

• ~ashington~ D. C.

20555 Ms. JoAnn Bier 204 Clinton Street Charlevoix, Michigan 49720

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REQUEST FOR ADDITIONAL INFORMATION

__, _________ c_ _______ CONS_UMERS_POWER _COMPANY_

PALISADES PLANT DOCKET NO. 50-255

1. Supply the ratings of your class lE motor contactors (coil voltage limits).

• supply the upper and lower limits for continuous operation, lower limits for pick-up and drop-out voltages.

Note:

we understand that both 440V arid 460V rated motors are used.

2.

What are the stall and starting rating (transient condition) of your class lE motors and loads (battery charges, etc.)?

3.

What were the bus loads during the test of the accuracy of your analysis?

(In percent of maximum bus load).

What were the instrument accuracies?

4.

Describe the present tap setting of transformers 11 and 12.

The February 29, 1980 annual report states these were changed.

noes your analysis include this tap change? If not new analyses are required.

5.

Did your analysis account for the tie between class lE 4ROV buses 11 and 12?

Supply either the analysis of a tech spec restriction* on_ the use of the bus.

6.

Supply the analysis for 120V instrument AC and 120V preferred AC including back-up *sources.

7.

Supply typical ard maximum cable feeder drop for each equipment voltage (2300V, 460V, 440V and l20V) or supply the terminal voltage for previous and new analyses.

8.

For those voltages presented in per cent or per unit, include the base voltage.

9.

What is the duration of the voltage dip caused by the simultaneous start of all safety injection-loads? If.it is longer than the 612 second time delay of the second level undervoltage relays, e~aluate the need for a new time delay and supply, or justify why it is not changed.

10.

Tech spec basis 3.7 allows ~he generator disconnect links to be removed to allow the station power transformer t~ serve as a reserve source.

Your reserve transformer is also available to power bus le, ld and le but only has the capacity to power buses le and ld.

Per the August 8, 1979 NRC letter, guideline 1, supply the required analysis for these possible sources uf offsite power.

Supply a tech spec restriction on the use of the reserve transforiner to power bus lE.

11.

Supply the GDC 17 review requested in the August 8, 1979 NRC letter. List any descrepencies and describe what Consumers Power Co. (r.Pr.o) will do to correct them.

12.

Describe the loads on the following buses (see your July 18, l980 letter Station Power Diagram).

480V buses 77, 78, 79, 80, 81, 82, 13, 14, 16; 801, 802,.807 and 808.

Does the use of the shown bus ties affect yoi..ranalysis? If so supply the data or a techrical specification restriction.