ML20236P975
| ML20236P975 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 07/10/1998 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20236P964 | List: |
| References | |
| 50-271-98-09, 50-271-98-9, NUDOCS 9807170232 | |
| Download: ML20236P975 (2) | |
Text
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NOTICE OF VIOLATION Vermont Yankee Nuclear Power Corporation Docket No.: 50-271 Vermont Yankee Nuclear Power Station License No.: DPR-28 During an NRC inspection conducted on June 10,1998 through June 19,1998, violations of NRC requirements were identified. In accordance with the " General Statement of Policy and Procedure for NRC Enforcement Actions," NUREG-1600, Revision 1, May 1998, the violations are listed below:
A.
Technical Specifications Paragraph 6.5, Plant Operating Procedures, Section A.,
requires detailed written procedures, involving both nuclear and non-nuclear safety,... covering areas listed below shall be prepared and approved. Paragraph 6.5, Section A.3., lists, Actions to be taken to correct specific and foreseen potential malfunctions of systems or components, suspected primary system leaks and abnormal reactivity changes.
Contrary to the above, as of June 9,1998, the following two procedures were not properly prepared and approved:
1.
Procedure OT 3114, Reactor High Level, Revision 9, did not direct or alert the operators to place reactor feedwater pump's breaker control switches in pull to lock to prevent an inadvertent start of more than one pump on bus 1.
Automatic restart of two reactor feedwater pumps on bus 1 was a known (or foreseen) malfunction. This resulted in a subsequent automatic restart of two reactor feedwater pumps on bus 1 and caused a loss of associated vital busses and a challenge to the emergency diesel generator.
l 2.
Procedure OP 2143,480 and Lower Voltage AC System, Revision 39, did not contain instructions to alert the operator that re-energizing bus 6 would result in a restart of the turbine generator auxiliary oil pump. Automatic restart of the auxiliary oil pump on re-energizing bus 6 was a known (or foreseen) malfunction. This resulted in a restart of the auxiliary oil pump which resulted in a high steam flow due to turbine bypass valves opening i
and subsequent actuation of the reactor protection system and a automatic main steam line isolation.
This a severity level IV Violation (Supplement 1).
B.
10 CFR Part 50 Appendix B, Criterion XVI, Corrective Action, states that measures j
shall be established to assure that conditions adverse to quality, such as failures, malfunctions, deficiencies, deviations, defective material and equipment, and l
nonconformances are promptly identified and corrected. In the case of significant conditions adverse to quality, the measures shall assure that the cause of the j
condition is determined and corrective action taken to preclude repetition.
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9807170232 990710 9
PDR ADOCK 05000271
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PM d
2 Contrary to the above, on or before June 9,1998, the licensee failed to take prcmpt or comprehensive action to correct identified deficiencies or preclude repetition as demonstrated by the following. The three relay calibrations performed in November 1997 for the 'D' RHR pump overcurrent relays and in December 1997 for the three Bus 1 feeder breaker overcurrent relays identified that the timing on all three phases were out of tolerance low. The only corrective actions was to reset the device.
This a severity level IV Violation (Supplement 1)
Pursuant to the provisions of 10 CFR 2.201, Vermont Yankee Nuclear Power Corporation is hereby required to submit a written statement or explanation to the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, D.C. 20555 with a copy to the Regional Administrator, Region I, and a copy to the NRC Resident inspector at the facility that is the subject of this Notice, within 30 days of the date of the letter transmitting this Notice of Violation (Notice). This reply should be clearly marked as a
" Reply to a Notice of Violation" and should include: (1) the reason for the violation, or, if contested, the basis for disputing the violation, (2) the corrective steps that have been taken and the results achieved, (3) the corrective steps that will be taken to avoid further violations, and (4) the date when full compliance will be achieved. Your response may reference or include previous docketed correspondence, if the correspondence adequately addresses the required response. If an adequate reply is not received within the time specified in this Notice, an order or a Demand for information may be issued as to why the license should not be modified, suspended, or revoked, or why such other action as may be proper should not be taken. Where good cause is shown, consideration will be given to extending the response time.
If you contest this enforcement action, you should also provide a copy of your response to the Director, Office of Enforcement, United States Nuclear Regulatory Commission, Washington, DC 20555-0001.
Because your response will be placed in the NRC Public Document Room (PDR), to the extent possible, it should not include any personal privacy, proprietary, or safeguards information so that it can be placed in the PDR without reaction. However, if you find it necessary to include such information, you should clearly indicate the specific information request for withholding the information from the public.
Dated at King of Prussia, Pennsylvania this 10th day of July,1998 1
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