ML20236A349

Clarifies Intent of Tech Spec 4.8.1.2 Re Offsite Power Supplies During Refueling.Tech Spec Should Be Interpreted to Mean That One Circuit Required by Tech Spec 3.8.1.2 Shall Be Considered Operable Consistent W/Steps in Ref Tech Specs

ML20236A349
Person / Time
Site:	Crystal River
Issue date:	10/16/1987
From:	Lainas G Office of Nuclear Reactor Regulation
To:	Reyes L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8710220206
Download: ML20236A349 (2)

Text

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October '16,1987 4

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50 b*A i

-MEMORANDUM FOR: Luis A. Reyes, Director ,

Division of Projects, Region II L FROM: Gus C. Lainas, Assistant Director l

for Region II Reactors.

Division of Reactor Projects-I/II

SUBJECT:

TECH SPEC INTERPRETATION -- 0FFSITE POWER SUPPLIES DURING REFUELING - CRYSTAL RIVER 3 In connection with the scheduled battery replacement at Unit 1, considerable j discussion has recently taken place between the licensee. RII personnel,'and NRR l I

staff regarding requirements for operability of independent circuits between the l offsite transmission network and the onsite Class 1E distribution systems while l in Modes 5 and 6.- Although TS 3.8.1.2 requires on1v one such circuit, the I

. wording of' the surveillance requirement -4.8.1.2, which references TSs 4.8.1.1.1 ,

and 4.8.1.1.2, has been interpreted to mean that each (this is, both) circuit (s) i shall be demonstrated operable in accordance with the various requirements of l TS 4.8.1.1.1 and 4.8.1.1.2. This is not the intended meaning of TS 4.8.1.?.

TS 4.8.1.2 should be interpreted to mean that the one circuit (and one diesel generator) required by TS 3.8.1.2 shall be determined or demonstrated operable in accordance with the steps described in TS 4.8.1.1.1 and TS 4.8.1.1.?. The

. phrases "each battery" in 4.8.1.1.1.c and "each diesel generator" in 4.8.1.1.?

! are intended to mean "each required battery" and "each required diesel generator". For two circuit operation, both batteries are required since one i

battery provides primary DC power to both 230 KV breakers while the other provides backup power, thus assuring independence and redunance. For one circuit operation, only one battery is required.

We are working with the licensee to clarify the technical specifications in this area. If there are further questions regarding these technical specifica-tions, please contact the Project Manager, Harley Silver.  !

2 Gus C. Lainas, Assistant Director ,

87102g0M a for Region II Reactors PDR Division of Reactor Projects-I/II ]

P l DISTRIBUTION Docket ~Fue# DMiller AThadani NRC & Local PDRs HSilver EButcher i PD22 Reading Glainas CRossi HBerkow FRosa TStetka BWilson

• See previous concurr ce LA:PDII-2 4H . I-2 *D: PDII AD 2A *ESB )

DMiller HSilver:bd HRerkow GL - s FRosa 10/ /87 10//b/87 10/ /87 10/ 87 10/ /87

• AD/S *TSR *D:0EA AThadani EButcher CRossi 10/ /87 10/ /87 10/ /87

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1. %o UNITED STATES NUCLEAR REGULATORY COMMISSION y WASHINGTON, D. C. 20555 October 16, 1987 l ......o l MEMORANDUM F00.: Luis A. Reyes, Director Division of Projects, Region II l FROM: Gus C. Lainas, Assistant Directnr for Region II Reactors j Division of Reactor Pro.iects-I/II

SUBJECT:

TECH SPEC INTERPRETATION -- 0FFSITE POWER SUFPLIES DURING

, REFUELING - CRYSTAL RIVER 3 .

l l In connection with the scheduled battery replacement at Unit 1, considerable t discussion has recently taken place between the licensee, RII personnel, and NRR

, staff regarding requirements for operability of independent circuits between the j l offsite transmission network and the onsite Class 1E distribution systems while l

'- in Modes 5 and 6. Although TS 3.8.1.? requires only one such circuit, the '

L wording of the surveillance _ requirement 4.8.1.2, which references TSs 4.8.1.1.1 and 4.8.1.1., has been interpreted to mean that each (this is, both) circuit (s) '

shall be demonstrated operable in accordance with the various requirements of TS 4.8.1.1.1 and 4.8.1.1.?. This is not the intended meaning of TS 4.8.1.2.

TS 4.8.1.2 should be interpreted to mean that the one circuit (and one diesel generator) required by TS 3.8.1.2 shall be determined or demonstrated operable in accordance with the steps described in TS 4.8.1.1.1 and TS 4.8.1.1.2. The i phrases "each battery" in 4.8.1.1.1.c and "each diesel generator" in 4.8.1.1.?

[+- are intended to mean "each required battery" and "each required diesel generator". For two circuit operation, both batteries are required, since one f battery provides primary DC power to both 230 KV breakers while the other provides backup power, thus assuring. independence and redundance. For one I circuit operation, only one battery is required.

I We are working with the licensee to clarify the technical specifications in this area. If there are further questions regarding these technical specifica-tions, please contact the Project Manager, Harley Silver.

f. _

~

us C. Lainas, Assistant Director for Region II Reactors Division of Reactor Projects-I/II

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