ML20214P940

Application for Amend to License DPR-57,changing Tech Specs to Modify Surveillance Requirements for Functional Testing of Certain Refueling Interlocks to Achieve Consistency W/Unit 2 Specs.Fee Paid

ML20214P940
Person / Time
Site:	Hatch
Issue date:	09/09/1986
From:	Beckham J GEORGIA POWER CO.
To:	Muller D Office of Nuclear Reactor Regulation
Shared Package
ML20214P944	List: ML20214P940 ML20214P949
References
SL-1089, TAC-63572, NUDOCS 8609240111
Download: ML20214P940 (6)

Text

.- . .

.-. , 1 Georga Power Cornpany 333 P:edmont Avenue ,

Atlanta Georgia 30308 ,

Telephono 404 526-7020 l I

.Maing Adoress' Post 0+tco Box 4545 i Atlanta. Georg a 30302 Georgia Power

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the southern electoc system ,

J. T. Beckham, Jr.

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%ce Presedent and General Manager nucicar Generat,cn SL-1089 0656C 4

September 9,1986 Director of Nuclear Reactor Regulation-4 Attention: Mr. D. Muller, Project Director i BWR Project Directorate No. 2 Division of Boiling Water Reactor Licensing 4

U. S. Nuclear Regulatory Comission Washington, D. C. 20555 -

h NRC DOCKET 50-321 OPERATING LICENSE DPR-57 EDWIN.I. HATCH NUCLEAR PLANT UNIT 1 REQUEST TO REVISE TECHNICAL SPECIFICATIONS REFUELING INTERLOCK SURVEILLANCE REQUIREMENTS

. Gent 1emen:

i In accordance with the provisions ~ of 10 CFR 50.90, as required by 10 CFR 50.59(c)(1), Georgia Power Company (GPC) hereby proposes a change to the Edwin I. Hatch Unit 1 Technical Specifications, Appendix A to Operating License DPR-57. The proposed change would modify the surveillance requirements for the functional testing of certain refueling interlocks to achieve consistency with the corresponding Unit 1 Limiting l

Conditions for Operation (LCO) statements and the Unit 2 Technical l Specifications. _The Plant Review Board, and Safety Review Board subcomittee have reviewed the proposed change.

l- Enclosure 1 provides a detailed description and basis for the proposed change.

l Enclosure 2 details the bases for our determination that the proposed change does not involve significant hazards considerations.

Enclosure 3 provides the page change instruction for incorporation of the Technical Specifications revision. The proposed changed pages follow Enclosure 3.

!. Payment of the filing fee in the amount of one hundred and fifty dollars is enclosed.

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Georgia Power A Director of Nuclear Reactor Regulation Attention: Mr. D. Muller, Project Director BWR Project Directorate No. 2 September 9, 1986 Page Two To allow sufficient time for procedure revision and orderly incorporation into~ copies of the Technical Specifications, we request that the proposed amendment, once approved by the NRC, be issued with an effective date to be no later than 60 days from the date of issuance of the amendment.

Pursuant to the requirements of 10 CFR 50.91, a copy of this letter and all applicable enclosures will be forwarded to Mr. J. L. Ledbetter of the Environmental Protection Division of the Georgia Department of Natural Resources.

Mr. J. T. Beckham, Jr. states that he is Vice President of Georgia Power Company and is authorized to execute this oath on behalf of Georgia Power Company, and that to the best of his knowledge and belief, the facts set forth in this letter are true.

GEORGIA POWER COMPANY By: hh I

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y. T. Beckham, Jrt Sworn to and subscribed before me this 9th day of September 1986.

$ $c "'"""""

War &M,;g; GKM/1c t

Enclosures c: Georria Power Company U. S. Nuclear Regulatory Commission Mr. t . P. O'Reilly Dr. J. N. Grace, Regional Administrator Mr. H. C. Nix, Jr. Mr. Pete Holmes-Ray, Senior Resident GO-NORMS Inspector-Hatch State of Georgia Mr. J. L. Ledbetter 0656C mm I

Georgia Power d ENCLOSURE 1 NRC DOCKET 50-321 OPERATING LICENSE DPR-57 EDWIN I. HATCH NUCLEAR PLANT UNIT 1 REQUEST TO REVISE TECHNICAL SPECIFICATIONS REFUELING INTERLOCK SURVEILLANCE REQUIREMENTS BASIS FOR CHANGE REQUEST The proposed change will clarify the surveillance requirements for performing functional tests on certain refueling interlocks.

Specifically, the current Unit 1 Technical Specifications require testing of the refuel mode switch interlocks, the fuel grapple hoist setting interlock, and the auxiliary hoist load setting interlocks " prior to any fuel handling with the head off the reactor vessel," and at weekly intervals thereafter. The Technical Specification bases for the refueling interlocks are to prevent an inadvertent criticality during refueling operations when the reactivity potential of the core is being al tered. The Limiting Conditions for Operation of the Unit 1 Technical Specifications (Specifications 3.10. A.1, 3.10. A.2, and 3.10. A.3) reflect this fact. Certain refueling operations such as fuel sipping and inspection, or transferring fuel between the spent fuel pools, however, can be performed while the head is off the reactor vessel and do not have the potential to cause inadvertent criticality.

This change would require testing of the refuel mode switch interlocks " prior to core al terations", which is consistent with the design bases. The change would al so require testing of the hoist interlock settings " prior to any movement of fuel assemblies or control rods within the reactor pressure vessel." This is consistent with the design intent to ensure that the core internals and pressure vessel are protected from excessive lif ting force in the event they are inadvertently engaged during lifting operations.

The requirement, as proposed, is in agreement with the Unit 2 a Standard Technical Specifications and more accurately reflects the intent of the Unit 1 Limiting Conditions for Operation for the refueling interlocks. This revision will also allow for consistency between the Unit 1 and Unit 2 plant procedures, thus simplifying operator training and enhancing plant safety.

0656C 9/09/86 700775

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GeorgiaPower d ENCLOSURE 2 NRC DOCKET 50-321 OPERATING LICENSE DPR-57 EDWIN I. HATCH NUCLEAR PLANT UNIT 1 REQUEST TO REVISE TECHNICAL SPECIFICATIONS REFUELING INTERLOCK SURVEILLANCE REQUIREMENTS 10 CFR 50.92 EVALUATION Pursuant to 10 CFR 50.92, Georgia Power Company (GPC) has evaluated the proposed amendment to the Plant Hatch Unit 1 Technical Specifications and has determined that its adoption would not involve a significant hazards consideration. The basis for this determination is as follows:

Proposed Change:

The proposed change will clarify the surveillance requirements for performing functional tests on certain refueling interlocks.

Specifically, this change would require testing of the refuel mode interlocks " prior to core alterations" and also would require testing of the hoist interlock setting " prior to any movement of fuel assemblies or control rods within the reactor pressure vessel . " The surveillance intervals associated with these tests would not be changed.

Basis for Proposed Change:

The revision to the Unit 1 surveillance requirements will more accurately reflect the intent of the corresponding Limiting Conditions for Operation (LCO) for the refueling interlocks. Al so , this revision to the Unit 1 Technical Specifications will be consistent with the Unit 2 Standard Technical Specifications, thus establishing consistency between the Unit 1 and Unit 2 plant procedures.

This change does not involve a significant increase in the probability or consequences of an accident. The refueling interlocks will still be .

tested in a manner which allows them to fulfill their safety function.

The proposed change will affect no other accident scenario.

The possibility of a different kind of accident from any previously analyzed is not created, because the change to surveillance requirements reflects the intent of the LC0 and the bases of the Technical Specifications for the refueling interlocks.

0656C E2-1 9/09/86 700775 1

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Georgia Power b ENCLOSURE 2 (Continued)

REQUEST TO REVISE TECHNICAL SPECIFICATIONS REFUELING INTERLOCK SURVEILLANCE REQUIREMENTS 10 CFR 50.92 EVALUATION Basis (continued):

The change does not involve a significant reduction in a margin of safety because the refueling interlocks will still be tested in a manner which allows them to perform their safety function. The margin of safety defined in the Technical Specifications is not significantly reduced by this change, because the plant safety analyses are not affected.

0656C E2-2 9/09/86 700775

Georgia Power 1 ENCLOSURE 3 NRC DOCKET ' 50-321 OPERATING LICENSE DPR-57 REQUEST TO REVISE TECHNICAL SPECIFICATIONS REFUELING INTERLOCK SURVEILLANCE REQUIREMENTS PAGE CHANGE INSTRUCTIONS The proposed revision to the Unit 1 Technical Specifications (Appendix A to Operating License DPR-57) would be incorporated as follows:

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