ML18352A320

Licensee Event Report ER-76-26 - Plant Discharge Temperature Increased More Rapidly than Expected

ML18352A320
Person / Time
Site:	Palisades
Issue date:	08/31/1976
From:	Bixel D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1976-026-00
Download: ML18352A320 (2)

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clff11 ';,Code 517 788-0550 August 31, 1976 Mr James G. Keppler Office of Inspection & Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DJCKET 50-255, LICENSE DPR PALISADES PLANT ER-76 PLANT DISCHARGE TEMPERATURE

• Attached is a reportable occurrence which relates to the Palisades Plant.

David A. Bixel Assistant Nuclear Licensing Administrator SEP 3 1976

.LICENSEE EVENT REPORT

• Palisades CONTROL BLOCK: ._I__.,_..___.__,___,_~I [PLEASE PRINT ALL REQUIRED INFORMATION]

1 6 LICENSE EVENT LICENSE NUMBER TYPE TYPE lolol-lolol ololol-lolol 14111111111 Io I 1 I 15 25 26 30 31 32 REPORT REPORT REPORT DATE

,TY;j* SOURCE OOCKl;T NUMBER EVENT OATE

@I!]coN'T I *I *I ~ 1015101-1Ol215151 101s111117161 1018131117161 75 80 7 8 57 58 59 60 61 68 69 74 EVENT DESCRIPTION lol2J !During a test to determine the effect of diverting dilution water flow (to the main I 7 8 9 80 lol31 Icondenser) on plant output the level in the cooling tower basin increased more 80 I

7 8 9 lol41 Irapidly than expected.

• Readjustment of the CT pump discharge valve to terminate I 7 8 9 80 lol5l )this increase resulted in a closed cycle condenser cooling system discharge temper-J 7 8 9 80 lolsl ature maximum of 6.6°F and a discharge time over the allowable 5°F limit of about 7 8 9 35 minutes. ER-7 -2 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT COOE CODE COMPONENT CODE SUPPLER MANUFACTURER VIOLATION

~ IHIFI l!J lzlzlzlzlzlzJ L!.J I z I 9 I 9 I 91 LU 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION lol0I jBased on calculations provided by the A-E, a rapid rise in the CT basin level was I 7 8 9 80 lolsl lnot expected. The test procedure was revised to accommodate this change and rea- I 7 8 9 80

~ lsonably good control was achieved. I

• 7 8 9 80 FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION EE]

7 8 w

9 I 1 Io I o12I

. 10 13 NA 44

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45 46 NA 80 FORM OF ACTIVITY CONTENT 7

rn 8 RELEASED

~

9 OF RELEASE wl 10 11 AMOUNT OF ACTIVITY NA 44 45 LOCATION OF RELEASE NA BO PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

~ 1010 I 01 UJ NA 7 8 9 11 12 13 BO PERS"ONNEL INJURIES NUMBER DESCRIPTION

[ill I 0 I 0 I 0 I NA 7 8 9 11 12 BO PROBABLE CONSEQUENCES

~ ~one; NPDES permit levels were not exceeded.

7 B 9 BO LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION EfilB 9L:?J 7 10 NA BO PUBLICITY

[I0 None.

7 B 9 BO ADDITIONAL FACTORS

• ~B 9!;--------L~----------------------------------------------------~

7 BO

[!1fil 7 89 BO