ML20210Q717

Provides Rept of Violation of Surveillance TS TS4.2.4, Reactor Instrumentation Sys. Calorimetric Calibr of Reactor Power Instrument Channels Was Not Done in Necessary Annual Period.No Immediate Corrective Actions Necessary

ML20210Q717
Person / Time
Site:	University of Texas at Austin
Issue date:	08/02/1999
From:	Wehring B TEXAS, UNIV. OF, AUSTIN, TX
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9908160096
Download: ML20210Q717 (2)

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..,. > N$ DEPARTMENT OF MECHANICAL ENGINEERING

.M ,THE. UNIVERSITY OF TEXAS AT AUSTIN

'% Nuclear Engineering hching Laboratory * (512) 471-5787 FAX (512) 471-4589 August 2, 1999 Document Control Desk U.S. Nuclear Regulatory Commission -

Washington D.C. 20555

Subject:

Technical Specification Violation Docket 50-602, License R-129

Dear Sir,

The University of Texas is reporting a violation of surveillance Technical Specification TS4.2.4, Reactor Instrumentation System. "The minimum configuration ofinstrument channels shall be calibrated annually or aller repair and modification. Calibration of the power measuring channels shall he done by a calorimetric method...."

A calorimetric calibration of the reactor power instrument channels was not done in the necessary annual period, allowing for an interval not to exceed 15 months. The 1998 to 1999 power calibration interval was 16 months and 2l day s (3/27/98 to 7/29/99). The time period interval was a scheduling error made by assuniing the " normal" schedule sequence

. for the task. July is the " normal" schedule time for the power calibration. The previous year schedule moved the calibration forward in time three months. Unfbrtunately the advanced date was not allowed for in the 1999 schedule and the usual buffer period of

- three months did not exist.- The following Table of Power Calibration Dates demonstrate that power calibration tasks overall have met and continue to meet the one year interval.

Table Power Calibration Dates Year Date D 1992 7/1 1993 9/24 1994 8/30 Q 1995

_1996 g 8/15 9/4

_ d IfF7__ 8/21 ,

. Samt Address: 10100 Burnet Road Austin. has 78758 MailAddress:J.J. Pickle Research Campus Bldg.159 Austin. has 78712 9 9DR

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'No immediate corrective action is necessary since the normal schedule process rettirns

. the task to the proper time intervals and analysis of the current data found the interval error.' A corrective action to prevent future reoccurrence of this error will emphasize the check of both the " normal" task schedule and the previous task done date.

Sincerely, fY

• Dr. Bernard W. Wehring Director Nuclear Engineering Teaching Laboratory TLB Cc: Al Adams

. Dale Klein Michael Krause Parker Lamb -

~ Sean O' Kelly