05000302/LER-1982-053-03, /03L-0:on 820808,outer Door of Reactor Bldg Personnel Hatch Reported Inoperable.Caused by Failure of Cam Roller Bearings in Mechanical Interlock.Bearings Replaced.Mod to Eliminate Problem Completed on 820831

/03L-0:on 820808,outer Door of Reactor Bldg Personnel Hatch Reported Inoperable.Caused by Failure of Cam Roller Bearings in Mechanical Interlock.Bearings Replaced.Mod to Eliminate Problem Completed on 820831

ML20027B152
Person / Time
Site:	Crystal River
Issue date:	09/09/1982
From:	Ford E FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20027B147	List: 05000302/LER-1982-053, Forwards LER 82-053/03L-0 05000302/LER-1982-053-03, /03L-0:on 820808,outer Door of Reactor Bldg Personnel Hatch Reported Inoperable.Caused by Failure of Cam Roller Bearings in Mechanical Interlock.Bearings Replaced.Mod to Eliminate Problem Completed on 820831
References
LER-82-053-03L, LER-82-53-3L, NUDOCS 8209160486
Download: ML20027B152 (2)

LER-1982-053, /03L-0:on 820808,outer Door of Reactor Bldg Personnel Hatch Reported Inoperable.Caused by Failure of Cam Roller Bearings in Mechanical Interlock.Bearings Replaced.Mod to Eliminate Problem Completed on 820831

Event date:
Report date:
3021982053R03 - NRC Website

text

.. _

s j

s.,

l j f}.

' ~

r

's r'

~

NRC FORM 364 U. S. NUCLE AR REGULATORY COMMISSION (1118 t

IICENSEE EVENT REPORT EXHIBIT A CONTROLSLOCK: l l ! l I l l (PLE ASE PRf N,T' OR TYPE ALL REOUtRED IN,ORMATIONI i

4

- i foTl i F l L! C l RlP l 3 l@l010 l-l 0101010 ]0 l ' l 010 Igl 4l1 l 111 l 1 l@l l lg 3

LICENSEE CoDL 3.

It taLENsE NuMetR db Jo LICEN>t t vPE JG b7 Lai be CON'T "l,' "! LI J@l 0 I s 101 I of 3 I o'l2 l@l0 I81018 I 812 1@l 019 1019 la Lt J@ >

o i

, c I

60-el DOCILE T NyM.gst 6d t'J

,, EVENT oArg 7.

7b RE POR T oA f t _

83 EVENT DESCRIPTION ANO PROG A.5LE CONSEQUENCES h

!I r7771 I At 2100 two individuals reported that the outer door of the reactor

,o

,$$U CE sCR'Pf ton

. L, dt @l N/A I Iltillittitil 2 a NAVE OF PPEPARER F. W. Ford

,soyE.(904) 795-6486 4

o PDR g

~.

A o

SUPPLEMENTARY INFORMATION

/

REPORT NO:

50-302/82-053/03L-0 FACILITY:

Crystal River Unit #3 3

REPORT DATE:

iSeptenber 9,1982 OCCURRENCE DATE:

August 8,1982 IDENTIFICATION OF OCCURRENCE:

The outer door of the Reactor Building personnel hatch was inoperable, contrary to Technical Specification 3.6.1.3.

CONDITIONS PRIOR TO OCCURRENCE:

i Mode 3, (0%).

s i

DESCRIPTION OF OCCURRENCE:

At 2100, it was identified by two individuals that the outer door of the personnel hatch was inoperable (i.e., full closure was not possible).

Redundant levels of containment integrity were not achievable. Maintenance was initiated, and the door functionally tested satisfactorily at 0530 on August 9,1982.

DESIGNATION OF APPARENT CAUSE:

The cause of this event is attributed to the cam roller bearing in the mechanical interlock failing. The failure is apparently due to an inadequate design of the mechanical interlock system.

ANALYSIS OF OCCURRENCE:

Containment closure was maintained by assuring that the inner door functioned properly. There was no effect upon the health and safety of the public.

CORRECTIVE ACTION

The bearings were replaced to correct the outer door closure problem.

A modification was completed on August 31, 1982, to eliminate this type of malfunction.

FAILURE DATA:

This is the first occurrence for the personnel hatch outer door and the second report under this specification.