ML20058D275
| ML20058D275 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 10/23/1990 |
| From: | Hodges M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20058D269 | List: |
| References | |
| 50-271-90-80, NUDOCS 9011060037 | |
| Download: ML20058D275 (5) | |
Text
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APPENDIX A NOTICE OF VIOLATION Vermont Yankee Nuclear Power Corp.
Docket No. 50-271 Vermont Yankee Nuclear Generating Station License No. DPR-28 As a result of the inspection conducted on August 6 through August 17, 1990, and in accordance with the " General Statement of Policy and Procedure for NRC Enforcement Actions," 10CFR Part 2, Appendix C (Enforcement Policy), the U
following violations were identified:
1.
Part 4.10 A.I.a of the Technical Specification requires that each diesel generator shall'be started and loaded once a month for sufficient time for the diesel engine and generator to reach equilibrium temperature at expected
^ maximum emergency loading not to exceed the continuous rating to demonstrate operational readiness.
Contrary to the above, the diesel generators were consistently tested at loads lower than the expected maximum provided in the Final Safety Analysis Report, Section 8.5.3.
The under loading was caused by using a unity or 100% power' factor.during the test rather than using a realistic value of 80 - 90% power factor.
Further, both the November 1988 and April.1990 diesel generator loading studies made by-the licensee provided information that the diesel' generator loading was substantially higher than the FSAR and the monthlyysurveillance tests loading value.
2.
'10CFR 50,. Appendix B, Criterion III, requires'that design control measures provide for verifying or checking the adequacy of the design.
The Vermont' Yankee Operational Quality Assurance Manual,Section III, Design Control requires...the performance of proper design verification or checking by means of. design reviews or alternate calculations by verifiers with the proper qualifications and the required level of responsibility for the adequacy of desigr.
Contrary to the' above, an analysis was conducted, Calculation VYC ~- 791, to verify the. adequacy of the safety-related 480 volt motor control centers to provide power to the attached loads. The analysis concluded that the motor control centers were adequately sized to supply the necessary power of 481 amperes; however, the analysis. and the required verification review failed to recognize that the electrical capacity of MCC BA was limited by the feeder circuit breaker and cables to 400 amperes.
b 0FFICIAL RECORD COPY SC VY SSFI - 0003.0.1 10/17/90 9011060037 901025 PDR ADOCK 05000271 Q
PNV
Appendix A 2
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3.
10CFR 50.59.a(2) states: A proposed change, test, or experiment shall be deemed to involve an unreviewed safety question (1) if the probability of occurrence or the consequences of an accident or malfunction of equipment important to safety previously evaluated in the safety analysis report may be increased; or (ii) if a possibility for an accident or malfunction of a different type than any evaluated previously in the safety analysis report may be created; or (iii) if the nrgin of safety as defined in the basis for any technical specification is. reduced.
Contrary to the above, on August 6,1990, it was identified that two safety evaluations, one for RHRSW pump cooler lines and the other for CS system, concluded that the changes in the systems would not increase the probability of equipment malfunction. Although, the addition of valve #999 in RHRSW system, and closure of a normally open valve (11B) in the CS system respectively did increase the probability of equipment malfunction, it was neither recognized nor evaluated, and the changes were implemented-in the system thereby modifying the system from the analyzed configuration.
1 These are Severity Level IV. Violations (Supplement I)..
Pursuant.to the provisions of 10CFR 2.201, Yankee Atomic Electric Company-is hereby required to submit to this office within thirty days of the date of the letter which transmitted this Notice, a written statement or explanation in reply, including:
(1) the corrective steps which have been taken and the
- results acnieved;/(2) corrective steps which will be taken to avoid further violations; and (3) the date when full compliance will be achieved. Where r
good cause is shown,' consideration will be given to extending this response time.
OFFICIAL RECORD COPY SC VY SSFI - 0003.0.2 10/17/90
- 1 50-271
- +1r..-John'DeVincentis, Vice Pr2sident Mr. George Storzinger, Comissioner Yankel Atomic Electric Company Vermont Department of Public Service L
580 Main Street 120 State Street, 3rd Floor B31 ton, Massachusetts 01740-1398 Montpelier, Vermont 05602 i
i
- Jerry 5:erbour Resi t Inspector
~Adm%1strative Judge Vermont ankee Nuc ear Power Station Atomic Safety and Licensing Board U.S. Nuc1 ar Jegulatory Comission U.S. Nuclear Regulatory Comission P. O. Box)-
Washington, D.C.
20555 Vernon,,Jermo 05354 f
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Mr..W. P. Murphy Frederick J..Shon.
1 Senior Vice President, Operations Administrative Judge _
- RD 5,. Box-169 Atomic Safety and Licensing Board' Vermont. Onkee Nuclear Power Corp.-
U.S. Nuclear Regulatory Comission Washington, D.C.
20555 i
Ferry Road
_ 05301 Brattleboro,, Vermont i
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1 Region dministrator,RegtdI i
.: Atomic Safety and Licensing Board U.S. Nuclear ulator omission
' U.S. Nuclear Regulatory Comission 475 Allendale Roa
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- IWashington, D.C.'
20555 King.of Prussia ennsy a
19406 l:
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Mr. Gustave A. Linenberger, Jr.
Dr. James H. Carpenter Administrative Judge Administrative Judge Atomic Safety and Licensing Board Atomic Safety and Licensing Board U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Washington, D.C.
20555 l
^
Varmont Public Interest Research Chairman, Board of Selectmen Group, Inc.
Town of Vernon 43 State Street Post Office Box 116 Montpelier, Vermont 05602 Vernon, Vermont 05353-0116
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Raymond N. McCandless Honorable John J. Easton Varmont Division of Occupational Attorney General and Radiological Health State of Vermont Administration Building 109 State Street Montpelier, Vermont 05602 Montpelier Vermont 05602 7
R. K. Gad, III Robert M. Lazo, Chairman Ropes & Gray a-One International Place Atomic Safety and Licensing Board 3ll U.S. Nuclear Regulatory Commission EE Boston, Massachusetts 02110 Washington, D.C.
20555
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Mr. J. Gary Weigand Mr. James P. Pelletier
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President & Chief Executive Officer Vice President - Engineering Vermont Yankee Nuclear Power Corp.
RD 5, Box 169 Vermont Yankee Nuclear Power Corp.
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P.O. Box 169 Ferry Road Ferry Road
=
Brattleboro, Vermont 05301 Brattleboro, Vermont 05301 M
g 50-271
.'Mr. George Iverson tir. Donald A. Raid New Hampshire Office of Plant Manager
~
Emergency Management Vermont Yankee Nuclear State Office Park South Power Station i
-107 Pleasant Street P.O. Box 157 Concord, N.H.-
03301 Governor Hunt Rd Vernon, VT 0535a
- Diane Curran, Esq.
Public Service Board Harmon, Curran & Tousley State of Vermont 2001 S Street, N.W., Suite 430 120 State Street Washington, D.C.
20009 Montpelier, Vermont 05602 i
t LJohn Traficonte Esq.
James Volz, Esq._
Chief Safety. Unit Special Assistant Attorney General Office of the Attorney General Vermont Departuent of Pub Mc Service One'Ashburton Place, 19th Floor 120 State Street
-Boston, Massachusetts 02108 Montpelier, Vermont 03602 1
Gesffrey M. Huntington. Esq.
G. Dana Bisbee, Esq.
- 0ffice of-the, Attorney General Office of the Attorney General
. Environmental Patection Bureau Environmental Protection Bureau 5 State House Annex-State House Annex
- 25. Capitol Street 25 Capitol Street
'r.oncord, New Hampshire.
03301-6397 Concord, New Hampshire 03301-6397 N
Charles Bechhoefer, Esq.
Adjudicatory File (2)
,LAdministrative Judge Atomic Safety and Licensing Board Atomic Safety and Licensing Board Panel Docket
- U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission
~ Washington, D.C.
20555 Washington, D.C.
20555 I