ML18348A219

License Event Reports 1977-039-00 Re Violation of Containment Building Integrity & 1977-040-00 Re Violation of Safety Injection Tank Level

ML18348A219
Person / Time
Site:	Palisades
Issue date:	08/30/1977
From:	Hoffman D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1977-039-00, LER 1977-040-00
Download: ML18348A219 (3)

Text

consumers

• Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201

• Area Code 517 788-0550 August 30, l977 1(\\0 ~**

Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60l37 DOCKET 50-255 - LICENSE DPR PALIS.AJ)ES PLANT - ER-77-039 AND ER-77-040 -

CB INTEGRITY AND SI TANK LEVEL

• Attached are two l4-day reportable events for the Palisades Plant. ER-77-039 relates to a violation of containment building integrity requirements and was reported by Telex on August l7, l977. ER-77-040 relates to a violation of safety injection tank level requirements and was reported by Telex on August 22, l977.

~(?.~

David P Hoffman Assistant Nuclear Licensing Administrator CC: ASchwencer, USNRC

e LICENSEE EVENT REPORT-Palisades CONTROL BLOCK: I 1 I I* I I I [PLEASE PRINT ALL REQUIRED INFORMATIONl

.1 6 LICENSE EVENT LICENSE NUMBER TYPE TYPE Io Io 1-1 o Io Io Io Io 1-1 o Io I 14111111111 Io 11 I 15 25 26 30 31 32 REPOR\ REPORT TYPE SOURCE OOCKeT NUMBER EVENT CATE REPORT CATE

@mcaN'T I* I

• I ~w IOI 5101-101215151 61 . . 68 1018111617171 IOl813IOl717l 75 . 80 7 8 57 58 59 60 69 74 EVENT DESCRIPTION laf21 I Five individuals were inside CB air lock. As they opened the outer door, another I 7 8 9 80 lol3I I man exiting CB opened the inner door~ also. CB integrity was thus compromised for I 7 89 ~

lol41 I less than a minute with ~lant at hot shutdovin. This is a violation of Technical I 7 8 9 80 lol5I I Specification 3.6.1.a. I 7 8 9 80 lol6I ~'----------------------------------------------(E_R_-_77_-_3_9)_____________~1 7 8 9 FRIME 80 SYSTEM CAUSE COMPONENT COMPONENT COOE COMPONENT COOE SUPPUER MANUFACTURER VIOLATION w

COOE 7

@El Isl 8 9 10 DI ~

11 IP! EINIEI TIRI 12 17 43 lwl3lol2I 44 47 w48 CAUSE DESCRIPTION Iola! I The door interlock mechanism failed. Repairs to the faulty mechanism have been I 7 8 9 80 lo191 I completed. I 7 8 9 80

~s.____________;_____________________________________..._________________,..________________--'00 FACILITY METHOO OF STATUS  % POWER OTHER STATUS OISCOVERY OISCOVERY OESCRIPTION Em8 luJ I 0 I 0 I 0 I IPreparing for Cold I W I 46 Direct Observation 7 9 FORM OF 10 12 13 Shutdown 44 45 80 ACTIVITY CONTENT I

7 rn 8 RELEASEO Lf_j 9

UJ .......

OF RELEASE 10 11

__NA_ _ _ _ __,.,

AMOUNT OF ACTIVITY 44 45 NA LOCATION OF RELEASE 80 PERSONNEL EXPOSURES IIE1 I 0 I 0 I . UJ I 0NUMBER TYPE

________N_A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ____

DESCRIPTION

.7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION EE! lol olol ~----~N=A..._______________.._____________________________.._____.

7 8 9 11 12 80

• ~

PROBABLE CONSEQUENCES I Minimal - No radioactivity released and containment at approximately 18% MPC.

7 8 9 . 80 LOSS OR OAMAGE TO FACILITY TYPE DESCRIPTION IIlfil8 9~

7 10 NA 80 PUBLICITY

[ill] NA 7 8 9 80

- - ADDITIONAL FACTORS

~ NA 7 8 9 80

[ili]

7 8 9 80

LICENSEE EVENT REPORT-Palisades CONTROL BLOCK:.._!_ __...l__...l_l__.l___.I [PLEASE PRINT ALL REQUIRED INFORMATION]

1 6 LICENSEE LICENSE EVENT LICENSE NUMBER TYPE TYPE lolol-1 ololololol-1 olo I 1411111111110111 15 25 26 30 31 32 REPORT REPORT TYPE SOURCE OOCKl;T NUMBER EVENT DATE REPORT CATE

@E]cdN'T l

• r* I L!J ~ lolslol-lol2lslsl lol8l1l8l1l1I 69 . 74 lol8l3lol1l1I 75 . 80 7 8 57 58 59 60 61 68 EVENT DESCRIPTION 10121 I On August 17, 1977 T-82C safety injection tank. was drained to 48 percent level for 7 B 9 80 Iola! I maintenance on the level switches and transmitter. On August 18 the level transmitter I 7 B 9 80 lol41 I reference and measuring legs were backfilled. This action resulted in the indicated I 7 B 9 80 lol5l I level going to zero. A review of the applicable logbooks does not account for the I 7 8 9 80 lolsl I water loss. It appears that T-82C level was less than (Contd on Line 18) I 7 B 9 PR~E (ER-77-40) 80 SYSTEM CAUSE COMPONENT COMPONENT COOE COMPONENT CODE SUPPUER MANUFACTURER VIOLATKJN w

CODE lol1I Is IF I 7 .8 9 10 L!.I I A I c I c I ul M I u I l!J I Fl ii 8 I ol 11 12 17 43 44 47 48 CAUSE DESCRIPTION Iola! I References ER-77-29. -34. -36. This failure appears to be related to repairs made as I 7 8 9 80 lolsl I a result of reference ERs. Future pr~blems should now be eliminated. I

~

~9 ss......~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~a80.....o FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION 7

EE]

B L.gJ 9

Io 10 I o I o12I 13 Cold Shutdown 44 I L£J 45 I

46 NA 80 FORM OF ACTIVITY CONTENT 7

rn 8 RELEASED L!J 9

OF RELEASE

~I 10 11 AMOUNT OF ACTIVITY NA I 44 45 NA LOCATION OF RELEASE 80 PERSONNEL EXPOSURES w

NUMBER TYPE DESCRIPTION

~I ol ol ol NA 7 8 9 11 12 13 80 PERSnNNEL INJURIES NUMBER DESCRIPTION EE] lol olol ~~~N_A~~~~~~~~~~~~~~~~~~~~--"~~--'

7 8 9 11 12 80 PROBABLE CONSEQUENCES

.!Ilfil I Minimal since the four safety injection tanks are sized to insure that three of the 7 8 9 tanks will provide sufficient water to flood the core following a DBA. 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION

!Tifil8 9lij 7 NA 10.,_~~~~~~~~~~~~~~~~~~---~~~~~~~~~~~~~~~~~---~~8=:!0 PUBLICITY 7

ITB 8 9 NA 80

• ADDITIONAL FACTORS (Contd From Event Description) .

~ I the 186" required by Technical Specification 3. 3.1. b for some unknown period during I 7 8 9 80 ITJfil I previous power operation.

7 8 9 80