ML18348A221

LER 1977-032-03, LER 1977-033-03, LER 1977-034-03, and LER 1977-036-01 Re Miscellaneous Event Reports

ML18348A221
Person / Time
Site:	Palisades
Issue date:	08/01/1977
From:	Hoffman D Consumers Power Co
To:	James Keppler NRC/IE, NRC/RGN-III
References
LER 1977-032-03, LER 1977-033-03, LER 1977-034-03, LER 1977-036-01
Download: ML18348A221 (7)

Text

consumers

• Power company General Offices: Z1!2 West Michigan Avenue, Jackson, Michigan 49!201

• Area Code 517 788-0550 August 1, 1977 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR

• PALISADES PLANT - ER-77-032, -033,

-034, -036 - MISCELLANEOUS EVENT REPORTS Attached are four separate reportable occurrences for the Palisades Plant.

David P Hoffman Assistant Nuclear Licensing Administrator

• ~AUG 4 1977

9 LICENSEE EVENT Palisades CONTROL BLOCK: ._I_...____..I___.l__.l__.l,___.I (PLEASE PRINT ALL REQUIRED INFORMATION]

1 6 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE IMlrlPIAILlll lolol-lol al ol ol ol-1 olo I l4lllllllll I oI 3 I

.

• 9 14 15 25 26 30 31 32 COCKl;T NUMBER EVENT CATE REPORT CATE 7

@mcoN'T 8

r57* 1***58I IOI 5101-1Ol215151 61 68 IOl710lll7171 69 74 101s101ll7171 75 80 EVENT DESCRIPTION lal2I I During the weekly Reactor Protective System (RPS) operational test, one matrix relay 7 8 9 80 lol3I I contact failed to open properly. The relay is an Adlake Model MW-2621-609. The relay I 7 8 9 80 lal41 I was tapped and the test reperformed with proper results.. I 7 8 9 80 jaj5j *~I-----------------------------------------------~----(-ER_-_7_7-_0_32_)__________~1 7 8 9 80 lal61 7 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT COOE SUPPLIER MANUFACTURER VIOLATION w

COOE COMPONENT CODE *

@El I rl A I ~ I R I E I LI Al y IxI I A I 0 I 5I 5I l2!J 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION Iola! I The cause of this event is associated with mercury wetted contacts and is similar to I 7

7 8 9 lolsl I 8 9 that reported previously (ER-76-017). A legitimate trip signal would have properly tripped the clutch power supply in the affected logic tree via three other parallel FACILITY

'l6 POWER METHOD OF DISCOVERY matrix relays.

DISCOVERY DESCRIPTION 80 80 80 I

I w

STATUS OTHER STATUS EEJ8 ~ I 11 o I o I NA '~----N_A________________.,.__........11 7 9 10 12 13 44 45 46 80 FORM OF ACTIVITY CONTENT 7

rn 8 RELEASEO L!.J 9

OF RELEASE W

10 11

. . _ I_ _ _

AMOUNT OF ACTIVITY N_A_ _ _ --11 44 45 NA LOCATION OF RELEASE 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION D)) Io I ol o I W NA 7 8 9 11 12 13 BO PERS.ONNEL INJURIES NUMBER DESCRIPTION EEi lololol11 7 8 9 12 NA 80 PROBABLE CONSEQUENCES ~

fi:Jfil I Norie. The system is designed to perform its function with a failure of this type. I 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION 7

GEW 8 9 10 NA 80 PUBLICITY 7.9 fill]

• ~

ADDITIONAL FACTORS I

NA 80 The problem stated above with mercury wetted contacts has been previously addressed I 7 8 9 80 GJfil I and, as a result, 36 replacement dry contact telephone type relays were ordered in

• I 7 8 9 80 (Contd)

• Additional Factors Continued From Line 19:

April 1977. Delivery is expected in late 1977 with replacement schedule for the next refueling outage. The present testing frequency of once per week will be continued until the new relays prove reliable enough to relax to the once-per-month testing requirement .

• 2

9 LICENSEE EVENT REPORT.

Palisades CONTROL BLOCK: I I I I I I I (PLEASE PRINT ALL REQUIRED INFORMATION]

1 6 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE I rvil I I p I A I L I 1 I Io Io 1-1 o Io Io Io Io 1-1 o Io I l411l1l1l1I I oI 3 I

• 9 14 15 25 26 30 31 32 REPORT REPORT TYPE. SOURCE OOCKET NUMBER EVENT CATE REPORT CATE 7

@illcoN'T 8

f *I" *I 57 58

~

59 wso I Ol 5101-1ol215151 61 . 68 1011101417171 68 74 101s101111111 75 80 EVENT DESCRIPTION

@Ifil I Results of monthly Technical Specifications sampling tests indicated a low boron J

7 8 9 80 lol31 I concentration (1711 ppm vs 1720 ppm req_uired) for T-82D safety injection tank. The I

7 8 9 80 lol4f I tank was drained down, refilled and re sampled. The second sample indicated 1761 ppm J80 7 8 9 lolsl l boron. (ER-77-033) I 7 8 9 80 lol61 7 8 8 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT COOE COOE COMPONENT COOE SUPPLIER MANUFACTURER VIOLATION 7

@El Isl Fl 8 9 10 W11 IAlclclulMlul 12 17 LIJ 43 I zI2 I 2 I2 I 44 47 w48 CAUSE DESCRIPTION Iola! I Due to the fact that the level in T-82D had not increased enough to req_uire draininfu__

7. 8 8 80

~ I it appears unlikely that dilution with primary coolant occurred and that the low boro~

itl 7 8 8 analysis most likely was caused by contamination of the samnle.

80 I

80 FACILITY METHOO OF

'l6 POWER DISCOVERY DISCOVERY OESCRIPTION w

STATUS OTHER STATUS EE] I 1 I oI oI NA lJJ NA 7 8 9 10 12 13 44 45 46 80 FORM OF ACTIVITY CONTENT I

rn 7 8 RELEASED UI 9

w -'__

OF RELEASE 10 11 AMOUNT OF ACTIVITY

__,NA_ _ _ _ _____._

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

mfillololol a, s 11 W 12 13 NA 80 PERS"ONNEL INJURIES NUMBER DESCRIPTION

[El lolol ol '="'""""~~~-N_A~~~~~~~~__,.~___..;.~~..;_~~~~~~..;...._,j 7 8 8 11 12 80 PROBABLE CONSEQUENCES

.B]fil I None. Actual boron concentration was likely within specs.

7 8 8 80

~ TYPE w LOSS OR DAMAGE TO FACILITY DESCRIPTION NA 7 8 9 10 80 PUBLICITY 7.9

[ill] I ADDITIONAL FACTORS NA 80

[))] I NA 7 8 9 80 Elfil8 9 7 80

e LICENSEE EVENT REPOR. Palisades CONTROL BLOCK:  !,__..___._I___..I____.l__,1___,I (PLEASE PRINT ALL REQUIRED INFORMATION]

I 1 6 LICENSE EVENT LICl;NSE NUMBER TYPE TYPE lolol-lololololol-1 olo I l411l1l1l1I Io I 3 I 15 25 26 30 31 32 REPORT REPORT TYPE. SOURCE DOCKET NUMBER EVENT CATE REPORT OATE 7

@ElcoN'T 8

r57*I *I58 w L1J 59 60 lol5lol-lol2l 5l 5I lol1lolBl1l1I lolBlol1l1l1I 61 68 69 74 75 80 EVENT OESCRIPTION lol2I I T-82C safety injection tank level was found to be 1% above Technical Specifications 7 8 9 80 lol3I I limits. The tank was drained to bring *it back within Technical Specifications limits. I 7 8 9 80 joj4j8 9

7. '~-----------------------------------------~(ER lol5l *._____________________________________________________________

___-7~7--0~3-4~)-------------~'80 7 8 9 80 jolsl 7 8 9 PRIME 80 SYSTEM CAUSE COMPON8\IT COMPONENT cooE SUPPLIER MANUFACTURER VIOLATION w

CODE COMPONENT CODE 7

@El Is IF I 8 9 10 11 IAI clclulMluJ 12 . 17 w 43 I zI 9 I9I 9I 44 47 w48 CAUSE DESCRIPTION

'J lol0I I A review of the June and July 1977 reactor logs indicates that T-82C was drained nine I 7 8 9 80 joj9j I times (in addition to normal samples) to-maintain the proper level. It is expected I 7 8 9 80

~! that inleakage of primary coolant and/or SI tank fill water is the cause. Some (Contd)!

80 FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION

[ill] ~ I ii o Io I NA LEJ NA 7 . 8 9 10 12 13 44 45 46 80 FORM OF ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE fill] W ~ l.___ _N_A_ _ ___..I NA 7 8 9 ' 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION ITEi8 9lo I 01 7 .

01 l!J 11 NA 12 13 80 PERS"ONNEL INJURIES NUMBER DESCRIPTION ffilololol NA.

7 8 9 11 12 80 PROBABLE CONSEQUENCES fiE8 9 7

NA 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION ITfil ~ NA 7 8 9 10 80 PUBLICITY EQ} NA 9 80

• ADDITIONAL FACTORS

~ I (Contd from Cause Description) testing will be performed to determine which valve(s) I 7 8 9 80 ITJfil I is leaking. I 7 89 BO

9 LICENSEE EVENT Palisades CONTROL BLOCK: .._I_..___..l_..l__.l_l....__.I (PLEASE PRINT ALL REQUIRED INFORMATION]

1 6 LICENSE EVENT LICENSE NUMBER TYPE TYPE Io Io 1-1 o I 15 oIo I o I o 1-1 o I o I 25 1411!1!1!11 26 30 Io I 1 I 31 32 REPORT REPORT TYPE SOURCE OOCKl;T NUMBER EVENT DATE REPORT CATE 7

@mcoN'T 8

r57*,--*I58 w~

59 60 1015101-101215151 61 68 IOl7lll917171 69 74 101s101111111 75 80 EVENT OESCRIPTION 10121 I At 0050 "C" safety injection tank level transmitter (LT-0372) failed. Prior to I 7 8 9 80 lol3I I failure, the level indication was 58%; After repair and calibration (at 1115) the I 7 8 9 80 lol41 I level indication was 64%. The tank was drained by 1203 to meet Technical I 7 8 9 80 10151 1 Specjfjcatiops reQ,ujrement.s (ER-:77-036) I 7 8 9 80 lolsl 7 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT COOE CODE COMPONENT COOE SUPPLIER MANUFACTURER VIOLATION 7

@El Isl Fl 8 9 10 l..!J.

11 lrlNlslTI Rlul 12 17 w 43 IFl1l8lol 44 47 w48 CAUSE DESCRIPTION Iola! I Failure of the level indication on "C" SI tank was due to failure of the oscillator/ I 7 8 9 80

~ j*amplifier assembly in the Foxboro level transmitter. The difference in level indica- I 7.89I tion was apparently due to the defective a.Iilplifier which . failed completetly at (Contd) 80 I

9 80 FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION fill] W l1lolol NA I W 7 8 9 10 12 13 44 45 FORM OF rn ACTIVITY CONTENT Rl~sio (~jSE ---AM_o_~-~-T-D_F_A_C-Tl-VITY_ ___.I LOCATION OF RELEASE OF ._I 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER

[2)) I 0 I 0 I 0 I w ,______

TYPE DESCRIPTION N_A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ____.

7 8 9 11 12 13 80 PERS"ONNEL INJURIES ITEi I 010101 .______N_A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.,...__ _ _ _ _ __.;.__.

NUMBER DESCRIPTION 7 8 9 11 12 80 PROBABLE CONSEQUENCES

.[lfil I None, Reference ER-77-029 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Efil L!J 7 8 9 10 NA 80 PUBLICITY (IB NA 9 80

• ADDITIONAL FACTORS IT§ NA 7 8 9 80 lJ]J 7 8 9 80

.., I ' .._

• Cause Description (Contd) 0050. The instrument loop had been previously calibrated on May 18, 1977 with no particular problems. After investigation of potential causes for the dif-ferent level indications (before and after LT failure), it was concluded that degradation of the oscillator/amplifier assembly led to the inaccuracies.

Additionally, as a result of ER-77-029 the following corrective action is being investigated to eliminate future problems:_

1. Replacement of mechanical float switches, which are somewhat unreliable, with more accurate conductivity type switches.

2. Provide the operators with an expanded scale for the level indication of the SI bottles .

• 2