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{{#Wiki_filter:,* .... , .. , ** *
{{#Wiki_filter:*
* consumers Power company
,*.... ..,
* General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201
        ,
* Area Code 517 788-0550 September 22, 1976 Mr James G. Keppler Office of Inspection  
consumers
& Enforcement Region III' US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKEI' 50-255, LICENSE DPR-20 -PALISADES PLANT ER-76-17 -RPS MATRIX RELAYS The attached event report relates to a failure of an RPS Matrix relay at the Palisades Plant. This type of failure is reportable on a thirty-day basis but the report was inadvertently misplaced.
**                               Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201
The discovery of this omission was the result of the recent emphasis being placed on event reports and an extensive search for this event report which was mislaid during the plant review process. In an effort to resolve this problem, the plant staff has instituted a formal method of maintaining control of all Palisades Plant event report.s.
* Area Code 517 788-0550 September 22, 1976 Mr James G. Keppler Office of Inspection & Enforcement Region III' US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKEI' 50-255, LICENSE DPR             PALISADES PLANT ~ ER-76             RPS MATRIX RELAYS The attached event report relates to a failure of an RPS Matrix relay at the Palisades Plant. This type of failure is reportable on a thirty-day basis but
This method of control will be maintained until the Company computerized status system proves capable of performing this function.
* the report was inadvertently misplaced. The discovery of this omission was the result of the recent emphasis being placed on event reports and an extensive search for this event report which was mislaid during the plant review process.
As mentioned in the report, a testing program involving the selection of a placement relay is nearing completion.
In an effort to resolve this problem, the plant staff has instituted a formal method of maintaining control of all Palisades Plant event report.s. This method of control will be maintained until the Company computerized status system proves capable of performing this function.
We have performed a series of tests on five different relays that were ordered to specification equivalent to the isting relays ..
As mentioned in the report, a testing program involving the selection of a re-placement relay is nearing completion. We have performed a series of tests on five different relays that were ordered to specification equivalent to the ex-isting relays ..
* These relays (all dry contact type) have been subjected to a series of tests including surge current, seismic, operating time, etc. liminary results lead us to conclude that an acceptable replacement relay will be found. David A. Bixel Assistant Nuclear Licensing Administrator SEP 2 7 1976
* These relays (all dry contact type) have been subjected to a series of tests including surge current, seismic, operating time, etc. Pre-liminary results lead us to conclude that an acceptable replacement relay will be found.
... '. e LICENSEE EVENT REPORT
David A. Bixel Assistant Nuclear Licensing Administrator
* Palisades CONTROL BLOCK: ... I __ .... I __ .___..__.I
* SEP 2 7 1976
[PLEASE PRINT ALL REQUIRED INFORMATION]  
 
' LICENSEE NAME 01 IMIIIPIAILlll 7 8 9 14 1 6 LICENSE NUMBER 10101-1°101°1°1°1-1°1°1 15 25 REPORT REPORT LICENSE TYPE 14111111111 26 30 EVENT TYPE I 0 I 3 I 31 32 REPORT OATE @E]coN'T 1 I I 7 8 57 58
                ...   '.
* TYPE SOURCE w L1J DOCKl;T NUMBER lol51ol-101215151 EVENT OATE lo l5l 2IOl716 I 1°191 2 1 2 17161 59 .60 61 BB 69 74 75 80 EVENT DESCRIPTION lol2l !During routine testing it was found that one of the twenty-four.RPS Matrix relays I 7 89 00 lolsj I failed to operate. Light tapping of the relay case appears to have resolved the I 7 89 00 lol41 I problem.*
e     LICENSEE EVENT REPORT
Weekly testing of the relays has continued with no further problems I 7 8 9 80 lol51 I observed to date. I 7 89 00 jol6I
* Palisades CONTROL BLOCK: ... I __....I __.___..__.I                               [PLEASE PRINT ALL REQUIRED INFORMATION]
__________ 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT. . COOE COOE COMPONENT COOE SUPPLIER MANUFACTURER VIOLATIJN  
1                        6 LICENSEE                                                                             LICENSE                EVENT NAME                                 LICENSE NUMBER                                  TYPE                  TYPE 01 IMIIIPIAILlll                             10101-1°101°1°1°1-1°1°1                             14111111111                  I0 I3 I 7 8 9                                  14    15                                             25     26                    30    31    32 REPORT   REPORT
@0 lrf Al lliJ IRfEILfA(Ylxl w I A I 0 I 5 ( 5 I L!J 7 8 9 10 11 12 17 43 44 47 48 CA!JSE DESCRIPTION fol0I I The cause of this failure appears to be with the mercury wetted 7 8 9
* TYPE   SOURCE            DOCKl;T NUMBER                        EVENT OATE                      REPORT OATE
* lolsl I contacts . (ADLAKE Mod MW-2621-609) and is similar to that reported previously j (UE-74-1).
'
A selected group of replacement relays is currently being tested. 8 9 FACILITY (Contd Line 18) METHOD OF STATUS % POWER OTHER STATUS DISCOVERY DESCRIPTION DISCOVERY I EEi illJ I 0 I 5 I 0 I -' __ NA __ ____. 7 El 9 10 12 13 FORM OF 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY EEl W ..... I ___ N_A ___ __, I 7 8 9 10 11 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION
7
[ill I ol o Io I
        @E]coN'T 8
* 7 8 9 11 12 13 PERS.ONNEL INJURIES NUMBER DESCRIPTION
1 I I 57     58 w59 L1J
[EJ I 01 o I o I 7 8 9 11 12 l1LJ 45 I 45 NA NA 46 NA LOCATION OF RELEASE NA I 80 I 80 I 80 80 80 80 80 . PROBABLE C-ONSEQUENCES EJfil I None. The system is 7 8 9 designed to perform its function with a failure of this type. I 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION ITfil uJ NA 7 8 9 10 80 PUBLICITY
                                                    .60 lol51ol-101215151 61                              BB lo l5l 2IOl716 69                        74 I   1°191 2 12 17161 75                 80 EVENT DESCRIPTION lol2l !During routine testing it was found that one of the twenty-four.RPS Matrix relays                                                           I 7     89                                                                                                                                           00 lolsj I failed to operate.                       Light tapping of the relay case appears to have resolved the                                       I 7     89                                                                                                                                           00 lol41   I problem.* Weekly testing                     of the relays has continued with no further problems                                       I 7     8 9                                                                                                                                         80 lol51   I observed to date.                                                                                                                       I 7   89                                                                                                                                           00 jol6I ~'------------------------------------------~(_ER_-~7_6-_1~7~)__________~1 7   8 9                                                                 PRME                                                                     80 SYSTEM       CAUSE                                       COMPONENT           COMPONENT.
* ADDITIONAL FACTORS I A report on the results of these tests will be completed within the next few weeks. I 7 89 00 ITJfil I Resolution of the problem is expected to begin following review of the report. 7 89 80}}
SUPPLIER          MANUFACTURER w
      .             COOE         COOE             COMPONENT COOE                                                       VIOLATIJN
      @0 lrf Al 8 9 10 lliJ 11 IRfEILfA(Ylxl 12                      17        43 IA I 0 I 5 (5 I 44                47 L!J 7                                                                                                                     48 CA!JSE DESCRIPTION fol0I I The cause of this failure appears to be associat~d with the mercury wetted                                                                   I 7     8 9                                                                                                                                           80
* lolsl     I contacts . (ADLAKE               Mod MW-2621-609) and is similar to that reported previously                                             I
~ j (UE-74-1).
80 8 9 A selected group of replacement relays is currently being tested.                                               I FACILITY                                                                                     (Contd Line 18)                       80 METHOD OF STATUS               % POWER               OTHER STATUS           DISCOVERY                      DISCOVERY DESCRIPTION EEiEl 7              9 illJ           I 0 I 5 I 0 I -'__NA_ _____.I l1LJ 10             12 13                         44 45          46 NA 80 FORM OF ACTIVITY       CONTENT RELEASED       OF RELEASE           AMOUNT OF ACTIVITY                                           LOCATION OF RELEASE EEl             ~              W I. . .___N_A_ _ ___,I                               I                                  NA 7     8         9                 10     11                                 44       45                                                          80 PERSONNEL EXPOSURES NUMBER           TYPE       DESCRIPTION
[ill     I ol     o Io I * ~                                                        NA 7     8 9                 11     12     13                                                                                                       80 PERS.ONNEL INJURIES NUMBER             DESCRIPTION
[EJ I         01   o I oI                                                            NA 7     8 9                 11 12                                                                                                                     80
      .           PROBABLE C-ONSEQUENCES EJfil I None.               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 ITfil uJ 7 8 9               10 NA 80 PUBLICITY ADDITIONAL FACTORS
* I A report             on the results of these tests will be completed within the next few weeks.                                           I 7     89                                                                                                                                             00 ITJfil I       Resolution of the problem is expected to begin following review of the report.
7     89                                                                                                                                             80}}

Revision as of 09:36, 20 October 2019

License Event Report 1976-017-00 Re Failure of RPS Matrix Relays
ML18348A278
Person / Time
Site: Palisades Entergy icon.png
Issue date: 09/22/1976
From: Bixel D
Consumers Power Co
To: James Keppler
NRC/RGN-III
References
LER 1976-017-00
Download: ML18348A278 (2)
v • d • e


Text

,*.... ..,

,

consumers

    • Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201
  • Area Code 517 788-0550 September 22, 1976 Mr James G. Keppler Office of Inspection & Enforcement Region III' US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKEI' 50-255, LICENSE DPR PALISADES PLANT ~ ER-76 RPS MATRIX RELAYS The attached event report relates to a failure of an RPS Matrix relay at the Palisades Plant. This type of failure is reportable on a thirty-day basis but
  • the report was inadvertently misplaced. The discovery of this omission was the result of the recent emphasis being placed on event reports and an extensive search for this event report which was mislaid during the plant review process.

In an effort to resolve this problem, the plant staff has instituted a formal method of maintaining control of all Palisades Plant event report.s. This method of control will be maintained until the Company computerized status system proves capable of performing this function.

As mentioned in the report, a testing program involving the selection of a re-placement relay is nearing completion. We have performed a series of tests on five different relays that were ordered to specification equivalent to the ex-isting relays ..

  • These relays (all dry contact type) have been subjected to a series of tests including surge current, seismic, operating time, etc. Pre-liminary results lead us to conclude that an acceptable replacement relay will be found.

David A. Bixel Assistant Nuclear Licensing Administrator

... '.

e LICENSEE EVENT REPORT

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

1 6 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE 01 IMIIIPIAILlll 10101-1°101°1°1°1-1°1°1 14111111111 I0 I3 I 7 8 9 14 15 25 26 30 31 32 REPORT REPORT

  • TYPE SOURCE DOCKl;T NUMBER EVENT OATE REPORT OATE

'

7

@E]coN'T 8

1 I I 57 58 w59 L1J

.60 lol51ol-101215151 61 BB lo l5l 2IOl716 69 74 I 1°191 2 12 17161 75 80 EVENT DESCRIPTION lol2l !During routine testing it was found that one of the twenty-four.RPS Matrix relays I 7 89 00 lolsj I failed to operate. Light tapping of the relay case appears to have resolved the I 7 89 00 lol41 I problem.* Weekly testing of the relays has continued with no further problems I 7 8 9 80 lol51 I observed to date. I 7 89 00 jol6I ~'------------------------------------------~(_ER_-~7_6-_1~7~)__________~1 7 8 9 PRME 80 SYSTEM CAUSE COMPONENT COMPONENT.

SUPPLIER MANUFACTURER w

. COOE COOE COMPONENT COOE VIOLATIJN

@0 lrf Al 8 9 10 lliJ 11 IRfEILfA(Ylxl 12 17 43 IA I 0 I 5 (5 I 44 47 L!J 7 48 CA!JSE DESCRIPTION fol0I I The cause of this failure appears to be associat~d with the mercury wetted I 7 8 9 80

  • lolsl I contacts . (ADLAKE Mod MW-2621-609) and is similar to that reported previously I

~ j (UE-74-1).

80 8 9 A selected group of replacement relays is currently being tested. I FACILITY (Contd Line 18) 80 METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION EEiEl 7 9 illJ I 0 I 5 I 0 I -'__NA_ _____.I l1LJ 10 12 13 44 45 46 NA 80 FORM OF ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE EEl ~ W I. . .___N_A_ _ ___,I I NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

[ill I ol o Io I * ~ NA 7 8 9 11 12 13 80 PERS.ONNEL INJURIES NUMBER DESCRIPTION

[EJ I 01 o I oI NA 7 8 9 11 12 80

. PROBABLE C-ONSEQUENCES EJfil I None. 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 ITfil uJ 7 8 9 10 NA 80 PUBLICITY ADDITIONAL FACTORS

  • I A report on the results of these tests will be completed within the next few weeks. I 7 89 00 ITJfil I Resolution of the problem is expected to begin following review of the report.

7 89 80

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