ML20080F152
| ML20080F152 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 10/31/1983 |
| From: | Farmer F, Stoffel J EG&G, INC. |
| To: | NRC |
| Shared Package | |
| ML20080F138 | List: |
| References | |
| CON-FIN-A-6429 EGG-EA-6359, TAC-43020, NUDOCS 8402100352 | |
| Download: ML20080F152 (8) | |
Text
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EGG-EA-6359 OCTOBER 1983 DEFINITION OF OPERABLE MONTICELLO NUCLEAR GENERATING PLANT i
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This is an informal report intended for use as a preliminary or working docurnent ' : ' " ":
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8402100352 340123 PDR ADOCK 05000263 p
PDR Prepared for the U. S. NUCLEAR REGULATORY COMMISSION H
E 6 E b idaho Under DOE Contract No. DE-AC07-76ID01570 FIN No. A6 J V
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EGG-EA-6359 DEFINITION OF OPERABLE MONTICELLO NUCLEAR GENERATING PLANT Published October 1983 l
F. G. Farmer J. W. Stoffel EG&G Idaho, Inc.
., i Responsible NRC Individual and Division:
H. Nicaloras/ Division of Licensing Docket No. 50-263 TAC No. 43020 Prepared for the U.S. auclear Regulatory Commission Under DOE Contract No. DE-AC07-761D01570 FIN No. A6429 l
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ABSTRACT This report reviews the extent of compliance of proposed and existing Monticello Nuclear Generating Plant Technical Specifications with clarifications of the definition and application of the term OPERABLE which have been required by the U.S. Nuclear Regulatory Commission.
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- l FORWARD This report is supplied as part of the " Selected Operating Reactors Issues Program (III)" being conducted for the U.S. Nuclear Regulatory Connission, Office of Nuclear Reactor Regulation, Division of Licensing, by EG&G Idaho, Inc., r2C Licensing Support Section.
The U.S. Nuclear Regulatory C5mmission funded the work under the authorization, B&R 20 19 10 11 1, FIN No. A6429.
NOTICE This report was pr5 pared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, or any of their encloyees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for any third party's use, or the results of such use, of any information, apparatus, product or process disclosed in this rtport or represents that its use by such third party would not infringe privately owned rights.
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CONTENTS l.
INTRODUCTION..........;..........................................
1 2.
REVIEW CRITERIA..................................................
1 3.
DISCUSSION.......................................................
3 4.
CONCLUSIONS......................................................
3 5.
REFERENCES.......................................................
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DEFINITION OF OPERABLE, MONTICELLO NUCLEAR GENERATING PLANT 1.
INTRODUCTION On April 10, 1980, the Nuclear Regulatory Commission (NRC) issued a generic letter to all Power Reactor Licensees which clarified the term OPERABLE and identified portions of the Model Technical Specifications (MTS) which are recommended to assure that safety systems remain OPERABLE within the limits of the single failure criterion (Ref.erence 1).
In that letter the NRC requested that Licensees review their Technical Specifications (TS) and submit such proposed changes as were necessary to incorporate the requirements of the MTS.
On May 14, 1980, and May 15, 1980, Northern States Power Company responded to the generic letter, proposing a revised definition of the term OPERABLE for the Monticello TS and stating that the existing TS adequately implement the NRC application criteria (References 3 and 4). EG&G Idaho, Inc., has reviewed the'Monticello TS and the revised definition of OPERABLE. This report provides an evaluati.on of those TS and that definition for conformance to the criteria established by the NRC.
2.
REVIEW CRITERIA The review criteria for this task are contained in NRC's April 10, 1980, letter and in Reference 2 and are summarized below.
Definition of OPERABLE A system, subsystem, train, component or device shall be OPERABLE or have OPERABILITY when it is capiale of performing its specified-function (s).
Implicit in this definition shall be the assumption that all necessary attendant instrumentation, controls, normal and emergency electrical power sources, cooling or seal water, lubrication or other auxiliary equipment that are required for the system, subsystem, train, component or device to perform its function (s) are also capable of performing their related support function (s).
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Limitino Condition for Operation When a Limiting Condition for Operation is not met because of ejrcumstances in excess of those addressed in the specification, except as provided in the associated ACTION requirements, within one hour action shall be initiated to place the unit in a MODE in which the Specification does not apply by placing it, as applicable, in:
1.
At least STARTUP within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, 2.
At least HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and 3.
At least COLD SHUTDOWN within the subsequent 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
Where corrective measures are completed that permit operation under the ACTION requirements, the ACTION may be taken in accordance with the.
specified time limit: as measured from the time of failure to meet the Limiting Condition for Operation. Exceptions to these requirements are stated in the individual Specifications.
Whenasystem, subsystem, train,componentordeviceisdeterhinedto be inoperable solely because its emergency power source is inoperable, or solely because its no mal power source is inoperable, it may be consideraj OPERABLE for the purpose of satisfying the requirements of its applicable i
I Limiting Condition for Operation, provided:
(a) its corresponding normal l
or energency power source is OPERABLE; and (b) all of its redundant system (s), subsystem (s), train (s), component (s) and device (s) are OPERABLE, or likewise satisfy the requirements of this specification.
Unless both conditions (a) and (b) are satisfied, within two hours action shall be initiated to place the unit in at least'STARTUP within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, in at least HOT SHUTDOWN within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and in at least COLD SHUTDOWN within l
the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This specification is not applicable in MODES 5 or 6.
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DISCUSSION 1
The proposed amendment (References 3 and 4) to the Monticello TS provides a definition of the term OPERABLE which is extracted verbatim from the MTS. This proposed definition complies with the review criteria.
f The licensee has diso taken the position that no revision of the Monticello TS is necessary to make the Limiting Conditions for Operation (LCOs) conform to those of the MTS. A review of the existing LCOs (Reference 5) for the Core Spray, Low Pressure Coolant Injection, Residual Heat Removal, High Pressure Coolant Injection, Automatic Pressure Relief, Reactor Core Isolation Cooling, and Emergency Diesel Generator Systems has been conducted to verify that proper redundancy is maintained and that proper action is taken if the required redunoancy is not maintained. For these systems, the existing TS conform to the requirements of the MTS.
4 CONCLUSION The licensee's proposed redefinition of the term OPERABLE and the existing Monticello TS LCOs* meet'the NRC requirements for providing adequate clarification of the term OPERABLE as it applies for Essential Safety Features _ systems to support system outages.or multiple outages of redundant compo'nents.
5.
REFERENCES 1.
NRC letter, D. G. Eisenhut, to All Power Reactor Licensees, dated April 10, 1980.
2.
NRC internal memorandum, S. Miner to S. Varga, et al.
" Definition of Operability--Multi-Plant Item 0-17", dated MarcW 7E7,1981.
3.
Northern States Power Company letter, L. O. Mayer, to NRC, Director, NRR, dated May 14', 1930.
4.
Northern States Power Company letter, L. O. Mayer, to NRC, Director, NRR, dated May 15, 1980.
5.
Technical Specification's for Monticello Nuclear Generating Plant, revised through Amendment 10, dated May 20, 1982.
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U.S. NUCLE AR REOULATORY COMM8SSION
.re ess BIBLIOGRAPHIC DATA SHEET EGG-EA-6359 4 TITLE AND SUSTITLE 2,(tee,,esmes Definition of Operable, 3_,,c,,iENT s ACCEssicw NO.
Monticello Nuclear Genersting Plant
,7. AUTHOR (51 S. DATE REPORT COMPLETED
"Eck"ober
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F. G. Farmert J. W. Stoffel laga 9 PE RFORMING ORGANIZATION NAME AND M AILING ADDRESS (inctuar le Cooel DATE REPORT ISSUED jvtam MONTM October 1983 EG&G Idaho, Inc.
.,t,,,,,,,e, Idaho Falls, ID 83415 S. Iteere meel 12 SPONSORING ORGANIZATION NAME AND M AILING ADORf $$ (incivde tw Coor/
pp Division of Licensing Office of Nuclear Reactor Regulation is riN sO.
U.S. Nuclear Regulatory Commission Washington, DC 20555 A6429 13, TYFE G7 REPORT PE RIOD COvg at O Itacs sive easrsJ u
15 SUPPLEMENTARY NOTES 14 (te an;ep 16 A85TR ACT 000 woras or sess#
This report reviews the extent of compliance of proposed and existing Monticello Nuclear Generating Plant Technical. Specifications with clarifications of the definition and application of the term OPERABLE which have been required by the U. S. Nuclear Regulatory Commission.
I 17 KEY WORDS AND DOCUMENT ANALYSIS 17a. DESCRIPTOR$
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17b IDENTIFIER $iOPEN ENDED TERMS IS AV AILASILITY STATEMENT
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21 NO OF P AGES Unclassified Not to be released to the public, as the report is subject to change following NRC review.
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