ML18018B156

LER 77-011-00, 77-014-00, and 77-106-00 for Nine Mile Point Unit 1 Regarding, Respectively, Discovery of One Reactor Low-Low Water Level Trip at 1 Water, Discovery of Indication of 50 Mr/Hr When Test Source Should Have Produced ...

ML18018B156
Person / Time
Site:	Nine Mile Point
Issue date:	04/14/1977
From:	Schneider R Niagara Mohawk Power Corp
To:	O'Reilly J NRC Region 1
References
LER 77-011-00, LER 77-014-00, LER 77-016-00
Download: ML18018B156 (10)

Text

NRC FonM 195 U.Se NUCLEAR REGULATORY C EMISSION DOCKET NUMBER.

(2 76) 5 F I I. E NUMBER NRC DISTRIBUTION FDR PART 50 DOCKET MATERIAL INCIDENT REPORT TO: i.P.O'REILLY ~S FROM: NIAGARA MOHAWK POWER CORP. DATE OF DOCUMENT.

SYRACUSE, N.Y. 14 R.R.SCHNEIDER DATE RECEIVED 4 2 QLETTER ONOTORIZED PROP INPUT FORM NUMBER OF COPIES RECEIVED 03ORIGINAL EUNCLASSIFI ED OCOPV 1 SIGNED DESCRIPTION ENCLOSURE LTR. TRANS THE FOLLOWING......... LICENSEE EVENT REPORT f/ 77-11, ON 3/20/77 CON-CERNING ONE OF THE REACTOR LOW-LOW WATER LEVEL TRIP BEING OUT OF REQUIRED XEGH SPEC LIMIT...

LICENSEE EVENT REPORT i/ 77-14, ON 3/26/77 CON-CERNING DETECTOR EXCEEDING TEST SOURCE..

lItlki144/LFOIIFIl LICENSEE EVENT REPORT jF 77-16, ON 4/6/77 CON-h P ' CERNING THE FISH TAGGING PROGRAM INDICATING

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(1P POSSIBLE NON-COMPLIANCE WITH SECTION...

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NOTE: IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J COLLINS

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NMP-0012 NIAGARA MOHAWK POWER CORPORATION NIAGARA MOWAWK 300 ERIE BOULEVARD. WEST SYRACUSE. N. Y. I3202 Ap~ 14, 1977 ReguiatDIy gale t y, (g R, A.. Jamm P. OIR~y KUv(0 9

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~u NueLea/I. Regula'o~ Connuamn )gag,g 05S77 631 Pmk Avenue, C+4I cocII G'ng o$ Pruusm, PA. 19406 RE: Sock& No. 50-220 8~ Nt,. O'Reify:

In acco~ce wMh Nine'Xe Po~ NueL~ S~on Unit <1 TeckucaL Speci,peatiom, we, heILeby submit'ic~ee Event'epo~

LER 77-11, 77-14, and 77-16.

7hne. aepo~ weIIe complied ~ Che fonna'u~gnated an Xhe Licence Eve RepoM Im~~on Booklet 00E-$ $ -001, ~ed O&obn 1974, aevL6ed Vecembe/I, 8, 1975.

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7 89 14 15 25 26 31 REPORT REPORT CATEGORY TYPE SOURCE OD KET NUMBER EVENT DATE REPORT DATE

[QD1]coN'T L 0 5 0 0 2 2 0 0 3 2 0 7 7 0 4 1 4 7 7 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION Qo 2 During routine surveillance, one reactor low-,low water level trip was found at 1" water 7 8 9 '80 when the re uired set oint is = 5" water. Allowable setpoint deviation is += 2.6"

[oaf 7 89 80 Qg water. The tri was reset to 6". At the time, the system was bypassed for major 80 Jog a e and s ecial level isntrumentation was in- service.

/ 8 9 80 Jog 'ER 77-11 7 89 PRh'IE 80 SYSTEhI CAUSE COMPONENT COMPONENT CODE CODE COMPONFNT CODE SUPPUER MANUFACTURER VA)IATK)N LIIAJ I 0 0 II

~E N S T R 0 Y 1 7 8 9 10 11 12 17 47 CAUSE DESCRIPTION LThe set oint had chan d ui ed redundant normal low-low tri s were o erable 7 8 9 80 as re uired b 7 89'o]

80 7 89 FACILITY METHOD OF 80 STATUS 55 POIVER OTHER STATUS DISCOVERY OI>COVERY DESCRIPTION 0 ~00 0 NA B NA 7 8 9 10 12 13 a5 46 FORM OF ACTIVITY COPITENT RELEASED OF RELEASE AMOUiIT Or ACTIVITY LOCATION OF RELEASE 12 Z Z NA NA 7 9 10 11 aa .'5 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

~SHOO 0 Z . NA 7 89 11 12 13 eo PERSONNEL INJURIES NUAABER DESCRIPTION 7 89

~00 0 11 12 NA 80

)ONtt X coNsEOUENcES PROBABLE Q~g NA 7 89 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Q~Q Z NA

/ 89 10 80 PUBLICITY NA 7 89 ADDITIONAL FACTORS Q~g [ NA 7 89 Q~g

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7 80 14 15 25 28 30 31 32 REPORT REPORT CATEGORY SOURCE DOCKET NUMBER EVENT DATE REPORT DATE

~oi coii'T TYPE L ~L 0 5 0 0 2 2 0 0 3 2 6 7 7 0 4 1 4 7 7 7 8 57 5B 59 60 61 i, 68 69 74 75 80 I

EVENT DESCRIPTION

~os Durin routine calibration of emer ency condenser vent monitor, found indication of 7 8 9 50 mr/hr when test source should have roduced indication of only 6 mr/hr. Since 7 89 80

~o 4 tri oint was set at 25 mr hr and checked as correct 'mer ency condenser would 7 89 80 d radiation.

7 8.9 80 77-14 7'9 Jog PRM =

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CAUSE DESCRIPTION

~o 8 Reset output of detector to produce monitor readings corresponding to the test 7 8 9 80 Qo 9

'ource. Res onse as found would have been cons'ervative.

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7 89 FACILITY METHOD OF 80 STATUS POV/ER OitIER STATUS DISCOVERY DISCOVERY OEcSCRIPTIQIi3

/~i 0 ~oo o n5 46 NA 7 8 9 10 12 13 80 FORM OF AMOUIiIT OF ACTIVITY LOCATION OF RELEASE NA NA 7 8 9 10 11 44, 45 80 PERSONNEL EXPOSURES NUMBcR TYPE DESCRIPTION IiioI ~oo o z 'NA 7 89 11 12 13 80 PERSONNEI. INJURIES NUiIBER QESCRIPTIQiN

~ii ~oo o NA 7 89 11 12 80 XXNSXK CONSEoUENcES PROBABLE

@~I . NA 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPc DESCRIPTION Q~g Z NA 7 89 10 PUBLICITY NA 7 89 ADDFRONAL FACTORS Q~g Also found m 7 8 9 80 allowable instrument de~iation of +100%-50K when reset.

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? 89 14 15 P5 26 30 31 32 REPORT REPORT CATEGORY TYPE, SOURCE DOCKET NUMBER EVENT DATE RcPORT DATE

~o~ coNi T ~L 0 5 0 0 2 2 0 0 4 0 6 7 7 0 4 1 5 7 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION The fish tagging program currently being conducted to fulfil the ETS requirement for-trap 8 9 80

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nets (Section 3. 1 . 2a(l ) (v) ) indicates possible non-compl iance with this section with 7 89 80 Q~gr regards to frequency, location and:sam ling period. It 'w'as also discovered that the data 7 8 9 80 g from this ro ram had not been re orted as er ETS Section 5.6.1 7 8 9 80 t006j LER 77-16 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT

~ov 7 8 9 '10 CODE

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COMPONENT COBE Z Z Z Z Z 17 SUP?UJI

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MANUFACIURcR 9 9&I9 47 VOLATION 48

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Ambi uous wordin in the Environmental Technical S ecifications.

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FACILITY STATUS 9

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'A OTHcR STATUS 44 DISCOVERY 45 b

46 Management OLSCOVERY Dc&CRiPTION review 80 FORM OF ACTIVITY COhlTENT C RELcMSEO OF RFLEASE AMOUNT OF ACTIVITY LOCATION OF REL'EASE 7

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gJ 10 11 NA 44 45 NA PERSONNEL EXPOSURES NUMBcR TYPE DESCRIPTION Q1g ~00 0 Z NA 7 8 9 11 12 13 .

PERSONNEL INJURIES NUliIGER DESCRIPTION

~>4 ~0. 0 0 NA 7 8 9 11 12 80 dNSfKXCDNSEOUENCES PROBABLE Q~ 5 Occurrence had no effect on inhabitants of surrounding area.

7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPc DESCRIPTION Q1g Z NA 7 0 9 'IO PUBLICITY NA 7 89 ADDITIONAL FACTORS Environtment contractor was instructed to propose and implement trapnet procedures. ETS Q~ 9

>> changes were submitted to Licensing .(1/6/77) that will delete this requirement. 00

, Data from current program to be submitted to NRC upon receipt.

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