ML20245D404

Notice of Violation from Insp on 890508-12.Violation Noted: Surveillance Procedure in Use,Did Not Adequately Account for RCS Leakage Measurements Which Result in Negative Unidentified Leakage

ML20245D404
Person / Time
Site:	Sequoyah
Issue date:	06/20/1989
From:	Wilson B Office of Nuclear Reactor Regulation
To:
Shared Package
ML20245D384	List: ML20245D381 ML20245D404 ML20245D419
References
50-327-89-16, 50-328-89-16, NUDOCS 8906270100
Download: ML20245D404 (2)

Text

_ _ ______ - -_ -

ENCLOSURE 1 NOTICE OF VIOLATION Tennessee Valley Authority Docket Nos. 50-327 and 50-328 Sequoyah License Nos. DRP-77 and DPR During the Nuclear Regulatory Commission (NRC) inspection conducted on May 8-12, 1989, a violation of NRC requirements was identified. In accordance with the " General Statement of Policy and Procedure for NRC Enforcement Actions," 10 CFR Part 2, Appendix C (1989), the violation is listed below:

Technical Specification 6.8.1.a and Regulatory Guide 1.33, Appendix A, Paragraph 8 requires implementation of surveillance and test procedures.

Contrary to the above, surveillance procedure SI-137.2 in use on May 9, 1989, did not adequately account for reactor coolant system leakage measurements which result in negative unidentified leakage. Negative reactor coolant system unidentified leakage is a physical impossibility, but can result from problems such as improperly calibrated level instrumentation or in leakage of fluid from non-reactor coolant system sources. Both of these examples could result in the masking of the true unidentified leakage, potentially to the extent that the 1.0 gpm technical specification limit may be unknowingly exceeded. On May 9, 1989, the inspector noted that negative unidentified leakage results from measurements taken on April 14 and 27, May 1, 2, and 8,1989, were accepted without documented justification or further review.

This is a Severity Level IV violation (Supplement I).

Pursuant to the provisions of 10 CFR 2.201, Tennessee Valley Authority is hereby required to submit a written statement or explanation to the Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555, with a copy to the Regional Administrator, Region II, and a copy to the NRC Resident Inspector, within 30 days of the date of the letter transmitting this Notice. This reply should be clearly marked as a " Reply to a Notice of Violation" and should include [for each violation]: (1) admission or denial of the violation, (2) the reason for the violation if admitted, (3) the corrective ,

steps which have been taken and the results achieved, (4) the corrective steps which will be taken to avoid further violations, and (5) the date when full )

compliance will be achieved. Where good cause is shown, consideration will be given to extending the response time. If an adequate reply is not received 8906270100 890620 PDR ADOCK 050003:27 Q PDC i

_ ___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ s

Tennessee Valley Authority 2 Docket Nos. 50-327 and 50-328-Sequoyah License Nos. DRP-77 and DPR-79 1

within the time specified in this Notice, an order may be issued to show cause why the license should not be modified, suspended, or revoked or why such other action as may be proper should not be taken.

FOR THE NUCLEAR REGULATORY COMMISSION Original signed by ,

William S. Little Bruce A. Wilson, Assistant Director for Inspection Programs TVA Projects Division Office of Nuclear Reactor Regulation i

Dated at Atlanta, Georgia this 20thday of June 1989 l

1 i

s i

i

_ _ _ _