ML19339C867

LER 81-002/03L-0:on 810113,post Acceptance Review of Annual Test Results from 04-80,for Control Room Emergency Filtration Sys,Showed 1980 Annual Test Incomplete.Caused by Personnel Failing to Determine Sys Velocity & Flow Info

ML19339C867
Person / Time
Site:	Point Beach
Issue date:	02/04/1981
From:	Fay C WISCONSIN ELECTRIC POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19339C866	List: ML19339C865 ML19339C867
References
LER-81-002-03L, LER-81-2-3L, NUDOCS 8102120162
Download: ML19339C867 (2)

Text

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NRC F ORM 366 U. S. NUCLEAR REGULATORY COMMISSION 87 771 LICENSEE EVENT REPORT

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TYPE JO F 4 'l LICENSEE CODE 14 15 LICENSE NUYSER CON'T

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REPORT O ATE 83 F 8 60 6' OOCK ET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lol2l [On 01 81, durinc normal operation, a post acceptance review of the l 1013l ! annual test resnits from 04-80, for the control room emergency filtra- l I o 14 l Ition system, revealed that the 1980 annual test was not complete per l At this time, the control room emergency filtration system l lolsllTS 15.4.11.

l o is ] l (common to both units) was deemed inoperable by TS definition. This ledl lol7]Ito a degraded mode of operation allowed by TS's. The public health and l i o is l l safety was not affected as the system, in reality, was noerational. 80 l

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l 1ilollThe event was caused by Health Physics personnel failing to determine, I 12 1 1Idurinc the acceotance review, that the test lacked system velocity and I The test was repeated and the system was found to tii21Iflow information.

[il3l l perform satisfactory on 01-15-8}. The testing procedures are being l

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% POV.ER OTHER ST ATUS DIS O RY DISCOVERY 0ESCRIPTION STA S '

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ATTACHMENT TO LICENSEE EVENT REPORT NO. 81-002/03L-0 Wisconsin Electric Power Company Point Beach Nuclear Plant Unit 1 Docket No. 50-266 On January 13, 1981, during normal operations, while reviewing the control room emergency filtration system's annual test results from April of 1980 for a control room habitability study, it was discovered that the 1980 annual test was not complete as it did not meet the testing requirements of Technical Specification 15.4.11.

At this time, the control room emergency filtration system (common to both units) was deemed inoperable by Technical Specification definition.

This led to a degraded mode of operation allowed by the Technical Specification.

The public health and safety was not affected by this event, as the system, in reality, was operational.

The event was caused by a failure, of Health Physics personnel during the initial acceptance review, to determine that the annual test was incomplete. The 1980 annual test lacked actual system velocity and flow information. The testing procedures are being modified to assure that the tests include actual system velocity and flow information.

The subject system was retested on January 14, 1981. The resulting data was analyzed on January 15, 1981 and the system was found to function properly as no degradation of system performance was evident in comparison to previous test data.

It should be noted that there is some question in the inter-pretation of the testing requirements and acceptance criteria relating to system design conditions and In specified in Technical particular, the Specifications 15.3.12.2 and 15.4.11.4. (i.e., maximum design,

question nominal relates to what design, etc.) desien parametershould be assigned to " design velocity" and

" design flow" as specified in the above mentioned Technical Speci-fications. Investigations into this. interpretive problem are i

- underway and the resulting parameters that are to be used as testing and acceptance criterianwill.be documented in the testing procedures. . - .-. . . -

Acceptance of the retest, relating.to-velocity and flow, per-formed on January 14, 1981 was. based-cn:present system performance >

-- compared"to previous systemnperformance.:(i-e v no performance .

degradation). ,

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In addition, it should be noted that the system is being evaluated'in accordance with NUREG-0737, Item III.D.3.'4..

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