ML18348A218: Difference between revisions
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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 19, 1977 | * Area Code 517 788-0550 September 19, 1977 | ||
. /\. | |||
:*,\' | |||
... " I . ',, .''\ | |||
Mr James G Keppler .' . | |||
\ | |||
* LICENSE NUMBER TYPE | Office of Inspection and Enforcement ~ | ||
* 1-* I 7 8 57 58 | Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR PALIS.A.DES PLANT - ER-77-042 AND ER-77-043 - SG LEVEL INDICATION AND PCS FLOW DETECTION Attached are two reportable occurrences relating to Palisades Plant reactor protective system instrumentation. | ||
In particular, Transmitter 7 8 9 . lol41 I PDT-0112AA read 8 percent higher than other respective transmitters and, therefore, 7 8 9 *joj5j I reportable under TS 6.9.2.b.l. (ER-77-43). | David P Hoffman Assistant Nuclear Licensing Administrator CC: ASchwencer,- USNRC | ||
1 | * SEP 21 1977 | ||
* lfil§J 7 8 9 SYSTEM COOE @0 lrfBI | |||
* FACILliY STATUS % POWER | CONTROL BLOCK:! | ||
eLICENSEE 1 I I I I* | |||
I 7 8 9 10 11 44 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION | EVENT REPORT A Palisades (Pllne PRINT AU. REQUIRED INFORMATIDNJ 1 6 LICENSEE LICENSE EVENT NAME | ||
* LICENSE NUMBER TYPE TYPE | |||
,fiil I M I I I p I A I L I i I lolol-lololololol-1 ol ol *l411 l1l1l1I Io I 3I | |||
~9 14 15 25 26 30 31 32 REPORT REPORT TYPE. SOURCE DOCKET NUMBER EVENT CATE REPORT CATE | |||
@El CON'T l | |||
* 1- | |||
* I ~ ~ 1°15101~10121 51 51 101s121417171 IOl9lll917l71 7 8 57 58 59 60 ~ 68 69 74 75 80 EVENT DESCRIPTION lol2I !After installation and calibration of new flow transmitters, Channel A indicated ap- I 7 8 9 80 Iola! I proximately 2 percent 'higher* flow than other channels. In particular, Transmitter I 7 8 9 . 80 lol41 I PDT-0112AA read 8 percent higher than other respective transmitters and, therefore, I 7 8 9 80 | |||
*joj5j I reportable under TS 6.9.2.b.l. (ER-77-43). I 1 a9 | |||
* 80 lfil§J 7 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPON8'11T COOE COOE COMPONENT COOE SUPPLIER MANUFACTURER VIOLATION | |||
@0 lrfBI W I r I N I s I TI RI ul l1J I RI 44 3 I7I0I 47 LlLJ 7 8 9 10 11 12 17 43 48 CAUSE DESCRIPTION | |||
... | *@jfil jNew Rosemont Transmitter S/N 86916 in Position PDT-0112AA apparently loses accuracy I | ||
7 8 9 80 lolsl I when system pressure is increased to 2000 psia. Reason for this behavior is unknown. I 7 8 9 80 | |||
~!,Transmitter was replaced. | |||
80 I | |||
* FACILliY METHOO OF STATUS % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION fill8 L£J lololol NA 44 | |||
[iE} None 7 8 9 Aornr10NAL FACTORS | [E_J 45 46 NA 80 7 9 10 12 13 FORM OF ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE B))' ~ ~ l._____NA_ ___,...._,..I NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 7 | ||
lIEJ8*9Io I ol ol 11 l.&J 12 13 NA 80 PERS'ONNEL INJURIES NUMBER DESCRIPTION rn1010101 NA 7 8 9 11 12 80 PROBABLE CONSEQUENCES l!Jfil None 7 8 9 BO LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION | |||
~ U_I '----""N=A________________________________________________________~ | |||
7 8 9 10 80 PUBLICITY | |||
[ill] None 7 8 9 80 | |||
!ADDITIONAL FACTORS 8 NA 7 8 9 80 7 | |||
DE89 80 | |||
CONTROL BLOCK: I 1 | |||
..J.:ICENSEE EVENT REPORT I I I I I 6 | |||
(PLIE PRINT ALL REQUIRED INFORMATION] | |||
Palisades | |||
=- | |||
LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE IMIIIPIAILlll lo lo I-lo lo lo lo lo 1-1 ol ol l411l1lil1I Io I 3 I | |||
* 9 14 15 25 26 30 31 32 REPORT REPORT TYPE SOURCE DOCKl;T NUMBER EVENT DATE | |||
* REPORT DATE 7 | |||
@ElcoN'T B | |||
T* | |||
57 r* I UJ 58 59 w 60 lo 15 lo I-lo 12151 sl lolsl1l1l1l1I lol2l1l2l1l1I | |||
~ 68 69 74 75 80 EVENT DESCRIPTION IQ[§ I On August 17, 1977, a faulty steam generator level indication for the Reactor Pro-7 8 9 80 | |||
@@:]I tective System (RPS); Channel "C," was detected. A loose connection was found in the I 7 8 9 80 I 0141 L.I......;"A:.:...."-=.st.:.e;:;;;a.m=~g;a.e:;;n::.e:;;r::.;a=.t::..:o:::..:r:;._;l:;,:e::..v::..:e::..:l::......:t;:,;r;..:;an:::;:;;s:,::mi;:;;:*:..:t:..::t:.;;e;.;:;r~l:.:::O:.;;;O~p~w~h~i~ch~"""r;::.e:::.SU:::::,l=.t.:;:.e::..d~1=..*ni.;__:a.::.,_3.o.:..,.s....r~o_.h....i... | |||
* g.,.h..._.r...:.e....a...d...,i....p'"lig.._.f'...o""'r-~I 7 8 9 80 lol51 ., the signal at the *RPS. This is a condition less conservative than Technical Specifi- I 7 8 9 80 12:1§] I cations limits and, therefore. reportable under TS 6.9.2.b.l. (F,R 77 42) I 7 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER VIOLATION | |||
@El I IjB I ~ I r I N I s I TI RI uj L!J Iz I 9 I 9 I 9 I L!J 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION | |||
~I The current loop resistor connection for the signal to the RPS console was loose, yield] . | |||
7 8 9 80 lolsl I ing a total resistance of approximately 104 ohms. This condi tiori resulted in the sig- I 7 8 9* 80 18)1 | |||
~ | |||
nal being approximately 3.5% high. The connection was tightened (continued on Line 80 FACILITY METHOD OF STATUS % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION l2EJ8 7 9 lEJ 10 I 0 I 0 I 0 12I 13 | |||
!cold Shutdown 44 | |||
!JU45 46 NA 80 FORM OF ACTIVITY CONTENT rn 7 8 RELEASED l!J 9 | |||
OF RELEASE | |||
~I 10 11 AMOUNT OF ACTIVITY NA 44 I 45 NA LOCATION OF RELEASE 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION | |||
[El 10 I 01 01 l_!j NA 7 8 9 11 12 13 80 PERS.ONNEL INJURIES NUMBER DESCRIPTION | |||
[E} jOj OI OI ,_________N_A--------------------~----------------------' | |||
7 8 9 11 12 80 PROBABLE CONSEQUENCES | |||
[IJ~ IA low-level trip would have occurred approximately 3 inches below feed ring center line. I 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION | |||
[Dfil ~ NA 7 8 9 10 80 PUBLICITY | |||
[iE} None 7 8 9 80 Aornr10NAL FACTORS | |||
~-and similar resistor connections were checked for tightness. | |||
7 8 9 80 7 | |||
GE8 9 80}} |
Latest revision as of 03:42, 17 March 2020
ML18348A218 | |
Person / Time | |
---|---|
Site: | Palisades |
Issue date: | 09/19/1977 |
From: | Hoffman D Consumers Power Co |
To: | James Keppler NRC/RGN-III |
References | |
LER 1977-042-00, LER 1977-043-00 | |
Download: ML18348A218 (3) | |
Text
consumers
- Area Code 517 788-0550 September 19, 1977
. /\.
- ,\'
... " I . ',, .\
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 PALIS.A.DES PLANT - ER-77-042 AND ER-77-043 - SG LEVEL INDICATION AND PCS FLOW DETECTION Attached are two reportable occurrences relating to Palisades Plant reactor protective system instrumentation.
David P Hoffman Assistant Nuclear Licensing Administrator CC: ASchwencer,- USNRC
- SEP 21 1977
CONTROL BLOCK:!
eLICENSEE 1 I I I I*
EVENT REPORT A Palisades (Pllne PRINT AU. REQUIRED INFORMATIDNJ 1 6 LICENSEE LICENSE EVENT NAME
- LICENSE NUMBER TYPE TYPE
,fiil I M I I I p I A I L I i I lolol-lololololol-1 ol ol *l411 l1l1l1I Io I 3I
~9 14 15 25 26 30 31 32 REPORT REPORT TYPE. SOURCE DOCKET NUMBER EVENT CATE REPORT CATE
@El CON'T l
- 1-
- I ~ ~ 1°15101~10121 51 51 101s121417171 IOl9lll917l71 7 8 57 58 59 60 ~ 68 69 74 75 80 EVENT DESCRIPTION lol2I !After installation and calibration of new flow transmitters, Channel A indicated ap- I 7 8 9 80 Iola! I proximately 2 percent 'higher* flow than other channels. In particular, Transmitter I 7 8 9 . 80 lol41 I PDT-0112AA read 8 percent higher than other respective transmitters and, therefore, I 7 8 9 80
- joj5j I reportable under TS 6.9.2.b.l. (ER-77-43). I 1 a9
- 80 lfil§J 7 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPON8'11T COOE COOE COMPONENT COOE SUPPLIER MANUFACTURER VIOLATION
@0 lrfBI W I r I N I s I TI RI ul l1J I RI 44 3 I7I0I 47 LlLJ 7 8 9 10 11 12 17 43 48 CAUSE DESCRIPTION
- @jfil jNew Rosemont Transmitter S/N 86916 in Position PDT-0112AA apparently loses accuracy I
7 8 9 80 lolsl I when system pressure is increased to 2000 psia. Reason for this behavior is unknown. I 7 8 9 80
~!,Transmitter was replaced.
80 I
- FACILliY METHOO OF STATUS % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION fill8 L£J lololol NA 44
[E_J 45 46 NA 80 7 9 10 12 13 FORM OF ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE B))' ~ ~ l._____NA_ ___,...._,..I NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 7
lIEJ8*9Io I ol ol 11 l.&J 12 13 NA 80 PERS'ONNEL INJURIES NUMBER DESCRIPTION rn1010101 NA 7 8 9 11 12 80 PROBABLE CONSEQUENCES l!Jfil None 7 8 9 BO LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION
~ U_I '----""N=A________________________________________________________~
7 8 9 10 80 PUBLICITY
[ill] None 7 8 9 80
!ADDITIONAL FACTORS 8 NA 7 8 9 80 7
DE89 80
CONTROL BLOCK: I 1
..J.:ICENSEE EVENT REPORT I I I I I 6
(PLIE PRINT ALL REQUIRED INFORMATION]
Palisades
=-
LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE IMIIIPIAILlll lo lo I-lo lo lo lo lo 1-1 ol ol l411l1lil1I Io I 3 I
- 9 14 15 25 26 30 31 32 REPORT REPORT TYPE SOURCE DOCKl;T NUMBER EVENT DATE
- REPORT DATE 7
@ElcoN'T B
T*
57 r* I UJ 58 59 w 60 lo 15 lo I-lo 12151 sl lolsl1l1l1l1I lol2l1l2l1l1I
~ 68 69 74 75 80 EVENT DESCRIPTION IQ[§ I On August 17, 1977, a faulty steam generator level indication for the Reactor Pro-7 8 9 80
@@:]I tective System (RPS); Channel "C," was detected. A loose connection was found in the I 7 8 9 80 I 0141 L.I......;"A:.:...."-=.st.:.e;:;;;a.m=~g;a.e:;;n::.e:;;r::.;a=.t::..:o:::..:r:;._;l:;,:e::..v::..:e::..:l::......:t;:,;r;..:;an:::;:;;s:,::mi;:;;:*:..:t:..::t:.;;e;.;:;r~l:.:::O:.;;;O~p~w~h~i~ch~"""r;::.e:::.SU:::::,l=.t.:;:.e::..d~1=..*ni.;__:a.::.,_3.o.:..,.s....r~o_.h....i...
- g.,.h..._.r...:.e....a...d...,i....p'"lig.._.f'...o""'r-~I 7 8 9 80 lol51 ., the signal at the *RPS. This is a condition less conservative than Technical Specifi- I 7 8 9 80 12:1§] I cations limits and, therefore. reportable under TS 6.9.2.b.l. (F,R 77 42) I 7 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER VIOLATION
@El I IjB I ~ I r I N I s I TI RI uj L!J Iz I 9 I 9 I 9 I L!J 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION
~I The current loop resistor connection for the signal to the RPS console was loose, yield] .
7 8 9 80 lolsl I ing a total resistance of approximately 104 ohms. This condi tiori resulted in the sig- I 7 8 9* 80 18)1
~
nal being approximately 3.5% high. The connection was tightened (continued on Line 80 FACILITY METHOD OF STATUS % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION l2EJ8 7 9 lEJ 10 I 0 I 0 I 0 12I 13
!cold Shutdown 44
!JU45 46 NA 80 FORM OF ACTIVITY CONTENT rn 7 8 RELEASED l!J 9
OF RELEASE
~I 10 11 AMOUNT OF ACTIVITY NA 44 I 45 NA LOCATION OF RELEASE 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION
[El 10 I 01 01 l_!j NA 7 8 9 11 12 13 80 PERS.ONNEL INJURIES NUMBER DESCRIPTION
[E} jOj OI OI ,_________N_A--------------------~----------------------'
7 8 9 11 12 80 PROBABLE CONSEQUENCES
[IJ~ IA low-level trip would have occurred approximately 3 inches below feed ring center line. I 7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION
[Dfil ~ NA 7 8 9 10 80 PUBLICITY
[iE} None 7 8 9 80 Aornr10NAL FACTORS
~-and similar resistor connections were checked for tightness.
7 8 9 80 7
GE8 9 80