ML19350E530

LER 81-023/03L-1:on 810403,decay Heat Cooler Outlet Valve CC1467 Stroked Closed During Component Cooling Water Monthly Test & Would Not Reopen.Caused by Excessive Wear on Actuator Due to Design Deficiency.Actuator Rebuilt

ML19350E530
Person / Time
Site:	Davis Besse
Issue date:	06/15/1981
From:	Isley T TOLEDO EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19350E526	List: ML19350E525 ML19350E530
References
LER-81-023-03L, LER-81-23-3L, NUDOCS 8106230236
Download: ML19350E530 (1)

Text

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LICENSEE EVENT REPORT

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EVENT DESCR PTION AND PROGA C NS ENCES o 2 l(NP-33-81-25) On April 3.1981. a t 1450 hours0.0168 days <br />0.403 hours <br />0.0024 weeks <br />5.51725e-4 months <br />. du ri n t- the nerfnemnnen nf rho l o 3 l Component Cooling Water Monthly Test. ST 5074.01. De ca v Hea t cooler nucler unlun I E l CC 1467 was stroked closed and would not reonen. Decav Hent Trnin 1 une ancinroa 1 0 3 [ inoperable, placing the unit in the action statecient of Technical Specification 3.5.2. I O 6 l There was no danger to the health and safety of the public or t'o station ocrsonnel. I g l Decay Heat Train 2 was operable during this time. '

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, 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27

O [The cause has been attributed to a desten deficiency for this carticular case. With I i i lthe present in s ta l la t ion . the actuator arm is forced to the side at the end nf the 1 2 l stroke causing excessive wear on the actuator. The actuator was rebuilt and the valve l i 3 l then stroked properly. FCR 81-128 has been written to change the installation. l

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7 a C 80 ST S  % POWE R OTHER STATUS iS RY DISCOVERY OESCRIPTION i 5

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nELE .SEO OF RELE ASE AMOUNT OF ACTIVITY '.OCATION OF RELEASE

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' 80 LOSS OF OR DAMAGE To FACILITY l TYPE DESCRIP TION '

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• 2 Ls_[@l P g 0 to N/A I 1111111111111 68 69 80 5 Tom Islev HJ Og!M g E R PHONE: (419) 259-5000 Ext. 230 2