ML20155D294

Notice of Violation from Insp on 880125-28.Violation Noted: Failure to Perform Evaluation of Design Errors for Potential Reportability or Inform Customer of Deviation in Order for Evaluation for Reportability

ML20155D294
Person / Time
Issue date:	06/03/1988
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML20155D292	List: ML20155D288 ML20155D294 ML20155D298 ML20155D301
References
REF-QA-99900871 EA-88-129, NUDOCS 8806150087
Download: ML20155D294 (2)

Text

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APPENDIX A Elgar Corporation EA 88-129 Docket No. 99900871/88-01 NOTICE OF VIOLATION During an inspection conducted on January 25-28, 1988, a violation of NRC requirements was identified. In accordance with the "General Statement of Polic and Procedures for NRC Enforcement Actions," 10 CFR Part 2, Appendix C (1988 the violation is listed below:

10CFR21.21(a)(1), requires,inpart,thateachcorporationsubjectto 10 CFR Part 21 adopt appropriate procedures to provide for either evaluating deviations or informing the customer of the deviation in order that the customer may cause the deviation to be evaluated.

Contrary to above, two instances were revealed where Elgar had knowledge of deviations, omissions, and/or design errors and neither perfortned an evaluation of them for potential reportability or informed the licensees so they could evaluate them for reportability. Examples are as follows:

a. During the review, it was revealed that failures of silicon controlled rectifiers were known to have occurred in actual use and that the Elgar maintenance instructions for its 25KVA inverters do not contain a critical torque requirement necessary for the installation of replacement silicon controlled rectifiers (SCR). If a replacement SCR is installed without receiving the appropriate torque, premature failure is likely to occur.

l b. During the review of Elgar's 7.5 and 25KVA inverter design chan l

was revealed that a number of engineering change notices (ECNs)ges, it identified the reasor, for change as design errors or deviations.

However, it was identified that Elgar had not considered the effect of these errors or deviations on other similar units in current operation at an end user facility or for generic applicability, and Elgar had not notified the end user of the errors or deviations. The following ECNs were determined to be in this category:

-ECN6379, PWM Analog logic Board, 4/1/87 - Dwg. 643-102-41, Rev. J.

-ECN1499, Alarm Logic Board, 12/30/80 - Dwg. 643-103-42. Rev. H.

-ECN4530, Alarm Logic Board, 2/14/83 - Dwg. 549-000-2, Rev. P.

-ECN5589, Static Switch Logic, 8/30/85 - Dwg. 549-000-2, Rev. P.

-ECN6539, Inverter Filter Assembly, 12/14/87 - Dwg. 642-211-43, Rev. J.

, -ECN3530, Alarm Logic Board, 2/14/83 - Dwg. 643-103-42, Rev. H.

This is a Severity Level III Violation (Supplement VII).

8906150087 880603 PDR QA979 EMVELGAR DCD 99900871

Notice of Violation Pursuant to the provisions of 10 CFR 2.201, Elgar Corporation is hereby required to submit a written statement or explanation to the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555 within 30 days of the date of the letter transmitting this Notice. The reply should be clearly marked as a "Reply to a Notice of Violation" and should include: (1) the reason for the violation if admitted (2) the corrective steps that have been taken and results achieved, (3) the corrective steps that will be taken to avoid further violations, and (4) the date when full compliance will be achieved.

Where good cause is shown, consideration will be given to extending the response time.

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