ML17312B568
| ML17312B568 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 07/21/1997 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML17312B566 | List: |
| References | |
| 50-528-97-19, 50-529-97-19, 50-530-97-19, NUDOCS 9707230122 | |
| Download: ML17312B568 (4) | |
Text
ENCLOSURE 1 NOTICE OF VIOLATION Arizona Public Service Company Docket Nos.:
50-528 50-529 50-530 Palo Verde Nuclear Generating Station License Nos.:
NPF-41 NPF-51 NPF-74 During an NRC inspection conducted on May 19 through June 19, 1997, two violations of NRC requirements were identified.
In accordance with the "General Statement of Policy and Procedure for NRC Enforcement Actions," NUREG-1600, the violations are listed below:
A.
10 CFR Part 50, Appendix B, Criterion XVI, "Corrective Action," requires that measures shall be established to assure that conditions adverse to quality, such as failures, malfunctions, deficiencies, deviations, defective material and equipment, and nonconformances are promptly identified and corrected.
In the case of significant conditions adverse to quality, the measures shall assure that the cause of the condition is determined and corrective action taken to preclude repetition.
Contrary to the above, as of on June 19, 1997, the licensee had failed to take corrective actions to identify the extent and scope of a procedural deficiency that led to a water hammer event in the Unit 3 containment spray system.
The licensee determined that the cause of the event was a confusing "if/then" procedural step, which was misinterpreted by the operators.
However, the licensee failed to determine whether additional "if/then" statements contained in other plant procedures could cause similar events.
Following NRC identification, the licensee's review identified several other examples of confusing "if/then" statements, including an additional example in the procedure in question.
This is a Severity Level IV violation (Supplement l)(50-528;-529;-530/9719-01).
B.
10 CFR 50.73(a)(2)(vii) states, in part, that the licensee shall report any event where two independent trains or channels become inoperable in a single system designed to mitigate the consequences of an accident.
Contrary to the above, on February 15, 1997, an event involving a single condition that caused two independent trains to become inoperable was not reported.
This event involved surveillance tests of the main steam safety valves that resulted in 6 out of 20 of these valves failing their as-found setpoint tests with setpoints greater than their technical specification setpoint tolerance of ~3 percent.
This is a Severity Level IV violation (Supplement l)(50-528;-529;-530/9719-02).
I 9707230122 97072i PDR ADQCK 05000528 8
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e Pursuant to the provisions of 10 CFR 2.201, Arizona Public Service Company 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 IV, 611 Ryan Plaza Drive, Suite 400, Arlington, Texas 76011, 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 for each violation:
(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.
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 redaction.
However, if you find it necessary to include such information, you should clearly indicate the specific information that you desire not to be placed in the PDR, and provide the legal basis to support your request for withholding the information from the publi".
Dated at Arlington, Texas this 21st day of July 1997
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