ML18348A267

License Event Report 1977-001-00 Control Rod Drive. Due to Seal Leakage Problems, CRDM No 4 Is Being Considered Inoperable

ML18348A267
Person / Time
Site:	Palisades
Issue date:	01/17/1977
From:	Bixel D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1977-001-00
Download: ML18348A267 (2)

Text

'RegulatqrL

• consumers

• Power company

\

/

A*\ail SecHan General Offices: 212 West Michigan Avenue, .Jackson, Michigan 49201

• Area Co.d~17 789!S:&hr~

10, January 17, 1977 Mr James G Keppler Office of Inspection & Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR

• PALISADES PLANT - CONTROL ROD DRIVES - ER-77-01 Attached is a Licensee Event Report which relates to our Palisades Plant.

David A Bixel Assistant Nuclear Licensing Administrator JAN 2 0 1977

CONTROL BLOCK

• LICENSEE EVENT REPORT*

I..___.___,_I__,_I___..l___.l____.I 1 . 6

. Palisades

[PLEASE PRINT ALL REQUIRED INFORMATION]

LICENSEE LICENSE EVENT

• NAME LICENSE NUMBER TYPE TYPE

~IMlrlPIAILl1I lolol-lololololol-lolol I 4 11 11111 I Io I 3 I 7 8 9 14 15 25 26 30 31 32 REPORT REPORT*

TYPE. OOCKl;T NUMBER . EVENT CATE REPORT CATE w

SOURCE

@ElcoN1 l . T *1 L!J 1015101-101215151 .1011101317171 1°11111111111 7 8 57 58 59 60 61 *. 68 . 69 - 74 75 80 EVENT DESCRIPTION 10121 I Due to seal leakage problems, CRDM No 4 is being considered inoperable. This I 7 8 9 80 lol31 I action is taken to prohibit additional drive movement which might lead to increased I 7 8 9 80 lol41 I seal leakage. The drive seal will be replaced at the next opportunity consistent I 7 8 9 80

~ I with plant operating requirements. (ER- 77 -01) I 7 8 9 80

~

7 8 9 PRIME BD SYSTEM CAUSE COMPONENT COMPONENT COOE COOE COMPONENT COOE SUPPLIER MANUFACTURER VIOLATION 7

@0 !RIB I 8 9 10 W 11 lclolN!RlolDJ.

12 . 17 l!J 43 44 I c 14 I 9 Io I 47 w48 CAUSE DESCRIPTION*

~ J The cause of this event is beginning seal failure on CRDM No 4. The seal is made j*

7 8 0

j by Garlock and is. a Mechanipak Type 74BH seal ( 1-:-1/4" shaft), seai Code 74000-9004,

• 9~*-----------------------------------~-----------,---------...-------------------------~--'aD 8

1 I Ref Dwg B29751. I 7 8 9 80 FACILITY METHOO OF EEl8 7

STATUS L!.I 9 10

% POWER I 0 I 9 I 9 I ,_,__

12 13 OTHER STATUS

_.;....*NA_

.. _ __,I 44 w

OISCOVERY 45 46 DISCOVERY DESCRIPTION NA 80 FORM OF ACTIVITY CONTENT rn 7*9 RELEASED

• L1..I .

9 OF RELEASE .

~10 I AMOUNT OF ACTIVITY NA 1~1----------------------'44 I 4~5 ___________________

LOCATION OF RELEASE NA ....;..___________________8_,0 PERSONNEL EXPOSURES w

NUMBER . TYPE DESCRIPTION IT@ I 0 I 0 I 0 I NA 7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION 11141 I0 I 0I 0 I NA 7 8 9 11 12 80.

PROBABLE CONSEQUENCES

.D)) I None .. The drive re~ins capable of performing its safety function.

7 8 9 80 LOSS OR DAMAGE TD FACILITY TYPE DESCRIPTION OE8 9W 7 10 .

. NA 80 PUBLICITY

[2JZI NA.

80

~ :DDITIDNAL FACTORS NA 7 8 9 80

[2]J 7 8 9 80