ML20206G534

SER Supporting Employee Concern Element Rept OP 30114, Malfunction of Doors

ML20206G534
Person / Time
Site:	Sequoyah
Issue date:	11/04/1988
From:	NRC OFFICE OF SPECIAL PROJECTS
To:
Shared Package
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References
NUDOCS 8811220308
Download: ML20206G534 (2)

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UNITED STATES i [ g . . v. .

i NUCLE AR REGULATORY COMMISSION ,

J' . 8 - W ASHINGTON, D. C. 20665 .

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I SAFETY EVALUATION REPORT BY THE OFFICE OF SPECIAL PkOJECTS j EFPLOYEE CLICERN ELEFEt;T REPORT OF 30114. "MALFUNCTION OF 000RS" L

i .T.ENNESSEE VALLEY AUTHORITY SEOL'OYAH NUCLEAR POWER PLANT UNITS 1 & 2 f

DOCKET NOS. 50-327 AND 50-328 ,

l 1. Subiect l

4 Categcry: Operations (30000) ,

l Subcategcry: Hechanical Equipment keliability/ Design (30100)  ;

1, Element: Palfunctier. of Coors (30114) l The basis fcr Element Report 30114-SCN, Rev. 2, dated No"ember 18, 1986, is employee concern IN-86-137-005 which states

• Joors A56 and A57 between the control room and Auxiliary Euilding ral-  :

function ever CI was told that several individuals I at Sequoyah (y three or four days. nares not given) had been injured as e resu i coors malfunctioning. CI qu'estioned actions (or lack thereof) to prevent i this frer occurring at kBM. ,

h foote: A deterninat'.on was cade that the above concern should read [

service bi;ilding" instead of "control room." t I lhis concern was evaluated by TVA as non-safety-related. j t

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11. Sumary of !ssue }

) The issue defined by TVA concerns verification of the personnel safety hazard l j associated with operation of doors A56 ar.d A57, the elleged high maintenance  ;

l rate associated aith these decrs and the potential for breaching Auxi14ry  !

Euilding isolaticn as a result of their tralfunction. ,

!!!.Evalualio,n o f TVA's review ct the saf ety staff computer data base and interviews with safet j

- personnel cer.firmec that several persenal injuries over an 11 year period wer i  :

attributed to operaticn of doors A56 and A57. A review of caintenance history l I and interviews with rechanical uaintenance personnel confirmed the high r.ain-l tenance rate for tnese doors. This high rate resulted from these decrs being

the main equipment and personnel access to the Auxiliary Building. TVA i

! ro tene: F; tertia 11;. Percrtable ( nurrences 'rEUs) and determined that there  !

! 'n ru :est e t m "(. E tr.( 4 t a r., Euilding isolatier system due to l i r eifunctier,s et tnese crers. In accition, tests of door A57 demonstrated its l ability to reirtain the seccndary containn.ent function. ,

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2 TVA concluded that t.he personnel safety and raaintenance aspects of the employee concern were valic. Modifications to these doors under ECN-5855 are egected te sche these problems.

IV. Cenclusion The IGC staff belines that the TVA investigation of the concern was adequate, and their resolution of the concern as described in Element Report OP 30114 is acceptable for restart.

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