ML18348A217

Corrected Licensee Event Report 1977-040-00 Re Safety Injection Tank Level

ML18348A217
Person / Time
Site:	Palisades
Issue date:	09/20/1977
From:	Hoffman D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1977-040-00
Download: ML18348A217 (2)

Text

consumers Power company September 20, 1977 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKEI' 50-255 - LICENSE DPR PALISADES PLANT - CORRECTED ER-77 SI TANK LEVEL Attached is the corrected Licensee Event Report ER-77-40.

David P Hoffman Assistant Nuclear Licensing Administrator CC: ASchwencer, USNRC SEP 2 6 1977

~ CORRECTED ~

WllCENSEE EVENT REPORT W

...... -~ ............... Palisades

. CONTROL BLOCK:j,__.......___.__..__.........._ __. (PLEASE PRINT ALL REQUIRED INFORMATION) 1 6 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE

@EllMlrlPIAl1l1I lolol-lololololol-1 olol 14111111111 Io 111 7 8 9 14 15 25 26 30 31 32 REPORT REPORT TYPE SOURCE DOCKl;T NUMBER EVENT OATE REPORT DATE

@E]coN'T 7 8 r* r*58I L!.I 57 59

~

60 lol5lol-lol215l5I 61 68 lol8l1l8l1l1I 69 74 lol8l3lol1l1l 75 80 EVENT DESCRIPTION 10121 I On August 17, 197.7 T-82C safety injection tank was drained to 48 percent level for 7 8 9 80 lol3l I maintenance on the level switches and transmitter. On August 18 the level transmitter I 7 8 9 80 lol41 I reference and measuring legs were backfilled. This action resulted in the indicated I 7 8 9 80 10151 ) level going to. zero. A review of the applicable logbooks does not account for the I 7 8 9 80 jol61 I water loss. It appears that T-82C level was less than (Contd on Line 18) I 7 8 9 PRIME (ER- 77 -40 ) 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPUER MANUFACTURER VIOLATION 7

@£]Isl 8 9 10 Fl ~

11 I A I c I c I ul MI uI 12 17 W 43 IFl1l8lol 44 47 w48 CAUSE DESCRIPTION

@Jfil I Referenc~s ER-77-29. -34. -36. This failure appears to be related to repairs made as I 7 8 9 80 lojej Ia result of reference ERs. Future problems should now be eliminated. I 7 8 9 80

~

7 8 9 80 FACILITY METHOD OF DISCOVERY DISCOVERY DESCRIPTION w

STATUS 'J6 POWER OTHER STATUS 7

El2]

8 9 L_qJ Io 10 I o I o12I 13 Cold Shutdown 44 45 I

46 NA 80 FOAM OF ACTIVITY CONTENT 7

rn 8 RELEASED 9

L.!J OF RELEASE L!J 10 11 I

AMOUNT OF ACTIVITY NA I 44 45 NA LOCATION OF RELEASE 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 7

[!EJ 8 9 lololol 11 w12 13 NA 80 PERS"ONNEL INJURIES EE! NUMBER lol olol DESCRIPTION

.______N_A______________________________________________~

7 8 9 11 12 80 PROBABLE CONSEQUENCES

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

~ ~ .______N_A________________________________________~---------'

7 8 9 10 80 PUBLICITY Gm8 7 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 7 B 9 80

~ I previous power operation.

7 8 9 80