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. PART 21 IDBRIFICATION NO. T56-T.06-oo8i C(FPAW NA"E.4 Lide ca. | . PART 21 IDBRIFICATION NO. T56-T.06-oo8i C(FPAW NA"E.4 Lide ca. | ||
u | u | ||
. IhlE OF LElWA idhu.l*o IDa(ET NO. Ec-%ht1 i | . IhlE OF LElWA idhu.l*o IDa(ET NO. Ec-%ht1 i DATE DISTRIBlIED to tA to p.m - ORIGIIML REPORT _ | ||
DATE DISTRIBlIED to tA to p.m - ORIGIIML REPORT _ | |||
StPPLBENTARY 1 DISTRIBlHION: | StPPLBENTARY 1 DISTRIBlHION: | ||
EACTOR (R) )L FUEL CYCLE & SAEGtRRDS (S) | EACTOR (R) )L FUEL CYCLE & SAEGtRRDS (S) | ||
Line 29: | Line 27: | ||
LDEB / t'PA I4B 5715 RNES / FOS SS-395 NRR/DJL AEOD liG 7602 LDEB/I'PA liG 5715 itBS / SG SS-881 EDD fig 7602 NRR/DJE LDEB / I'PA l4G 5715 NRR/DSI dSLBPFM 450 EOD fig 7602 MT ' | LDEB / t'PA I4B 5715 RNES / FOS SS-395 NRR/DJL AEOD liG 7602 LDEB/I'PA liG 5715 itBS / SG SS-881 EDD fig 7602 NRR/DJE LDEB / I'PA l4G 5715 NRR/DSI dSLBPFM 450 EOD fig 7602 MT ' | ||
SAo/SP 11G-7210A ASLBP FM 450 NRR/D3L - | SAo/SP 11G-7210A ASLBP FM 450 NRR/D3L - | ||
CENTPALFILES 016 CBERAL FIlfS 016 ASLBP FM 450 CB HPE ~ILES ( W RON) CENTRAL FILES (GR000 CBERALFILES 016 PDR CBffRAL FILES SS-395 | CENTPALFILES 016 CBERAL FIlfS 016 ASLBP FM 450 CB HPE ~ILES ( W RON) CENTRAL FILES (GR000 CBERALFILES 016 PDR CBffRAL FILES SS-395 CBERAL FIlfS (CHRON) LPDR PDR . | ||
CBERAL FIlfS (CHRON) LPDR PDR . | |||
PDR TEPA LPDR M . | PDR TEPA LPDR M . | ||
TERA | TERA | ||
~ | ~ | ||
ACTION: | ACTION: | ||
PRELIMINARY EVALUATION OF B E' ATTACHED REPORT INDICATES LEAD RESPONSIBILITY FO | PRELIMINARY EVALUATION OF B E' ATTACHED REPORT INDICATES LEAD RESPONSIBILITY FO FOLLOWJP AS SFDWN BELOW: | ||
FOLLOWJP AS SFDWN BELOW: | |||
IE 5 NE 2 f0BS [ OTHER _ | IE 5 NE 2 f0BS [ OTHER _ | ||
@ Sc FFMSI P&,8/1/80 | @ Sc FFMSI P&,8/1/80 8011 080 Gg K- 'An% | ||
8011 080 Gg K- 'An% | |||
e :- | e :- | ||
one. M h to | one. M h to | ||
* 83-2os- coi t | * 83-2os- coi t | ||
. QghQ | . QghQ MISSISSIPPI POWER & LIGHT COMPANY | ||
MISSISSIPPI POWER & LIGHT COMPANY | |||
* Helping Build Mississippi C, | * Helping Build Mississippi C, | ||
P. O. B O X 16 40. J A CK S O N. MIS SIS SIP PI 3 9 2 05 YE Yw Yc"M October 22, 1980 Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W. | |||
P. O. B O X 16 40. J A CK S O N. MIS SIS SIP PI 3 9 2 05 | |||
YE Yw Yc"M October 22, 1980 Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W. | |||
Suite 3100 Atlanta, Georgia 30303 Attention: Mr. J. P. O'R'eilly, Director | Suite 3100 Atlanta, Georgia 30303 Attention: Mr. J. P. O'R'eilly, Director | ||
==Dear Mr.'O'Reilly:== | ==Dear Mr.'O'Reilly:== | ||
==SUBJECT:== | ==SUBJECT:== | ||
Line 88: | Line 64: | ||
. Member Middle South Utilities System | . Member Middle South Utilities System | ||
MIIslbS!PPI POWER & LIGHT COMPANY * . | MIIslbS!PPI POWER & LIGHT COMPANY * . | ||
Mr. J. P. O'Reilly AECM-80/264. | Mr. J. P. O'Reilly AECM-80/264. | ||
NRC , - | NRC , - | ||
~; Page: 2 : - ; | ~; Page: 2 : - ; | ||
~ Yours truly, y- J. P. McGaufhy, Jr. | |||
~ Yours truly, | |||
y- J. P. McGaufhy, Jr. | |||
WDH:mt Attachment '-" -- ~ ' | WDH:mt Attachment '-" -- ~ ' | ||
cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner ~" ' ' - ~ ~ ~' ' '' ' | cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner ~" ' ' - ~ ~ ~' ' '' ' | ||
Line 124: | Line 76: | ||
Division of Inspection & Enforcement ' | Division of Inspection & Enforcement ' | ||
~ | ~ | ||
- 'I'' - | - 'I'' - | ||
U. S. Nuclear Regulator,/ Commissio'n . | U. S. Nuclear Regulator,/ Commissio'n . | ||
' ~ ~ ~ | ' ~ ~ ~ | ||
Washington, D.C. 20555 bec: . Dr. D. C. Gibbs-Pa. J. P. McGaughy Mr. J. N. Ward ' | |||
Washington, D.C. 20555 | |||
bec: . Dr. D. C. Gibbs-Pa. J. P. McGaughy Mr. J. N. Ward ' | |||
Mr. A. Zaccari'a' ~ | Mr. A. Zaccari'a' ~ | ||
~ | ~ | ||
Mr. J. W. Yelverton ; | Mr. J. W. Yelverton ; | ||
Pz. L. F. Dale - | Pz. L. F. Dale - | ||
Mr.. C. K. McCoy: - | Mr.. C. K. McCoy: - | ||
Mr. T. H. Cloniriger | Mr. T. H. Cloniriger | ||
;Mr.' R. A. Ambros'ino.'. _ } ' . . ' '. | ;Mr.' R. A. Ambros'ino.'. _ } ' . . ' '. | ||
[_~ ~ ~ ~ . , . 7 - .__ | [_~ ~ ~ ~ . , . 7 - .__ | ||
- Mr '. C. L. Tyrone ;.''''~,''~~., | - Mr '. C. L. Tyrone ;.''''~,''~~., | ||
'~~ | '~~ | ||
- Mr.- P. K. VanDoorn ' | - Mr.- P. K. VanDoorn ' | ||
Mr. A. G. Wagner _ | Mr. A. G. Wagner _ | ||
PRD File ,- | PRD File ,- | ||
File | File M | ||
9 4 | |||
4 | |||
MMBCBIlFlMNRtWt@ | MMBCBIlFlMNRtWt@ | ||
~ | ~ | ||
P gn 1 cf'l s | |||
P gn 1 cf'l | |||
s | |||
FINAL REPORT TO PRD-80/11 (Model 510 DU Trip Unit) | FINAL REPORT TO PRD-80/11 (Model 510 DU Trip Unit) | ||
I. Description of Deficiency The Rosemount Model 510 DU' Trip / Calibration Unit has a common mode failure of an essential switch that determines the trip output logic. The dalfunction: reverses the logic, thereby . | I. Description of Deficiency The Rosemount Model 510 DU' Trip / Calibration Unit has a common mode failure of an essential switch that determines the trip output logic. The dalfunction: reverses the logic, thereby . | ||
providing an . erroneous signal. , The trip unit is used in con-junction with the pressure transmitter to provide high or low-trip signals. | providing an . erroneous signal. , The trip unit is used in con-junction with the pressure transmitter to provide high or low-trip signals. | ||
II. Safety Implications | II. Safety Implications Due to the inherent safety functions of these devices, failure would adversely affect the safety of operation of Grand Gulf Nucleat Station, Units 1 and 2. As an example, when the Model 510 DU is used as a water level trip unit, the deficiency can result in indicating high reactor water level when actually the' water level is low. | ||
Due to the inherent safety functions of these devices, failure would adversely affect the safety of operation of Grand Gulf Nucleat Station, Units 1 and 2. As an example, when the Model 510 DU is used as a water level trip unit, the deficiency can result in indicating high reactor water level when actually the' water level is low. | |||
III. Corrective Action Taken General Electric has issued Field Disposition Instructions (FDI's) to return Model 510 DU Trip Units to manufacturer for repair. | III. Corrective Action Taken General Electric has issued Field Disposition Instructions (FDI's) to return Model 510 DU Trip Units to manufacturer for repair. | ||
Details of the corrective act. ion are delineated in the following FDI's: | Details of the corrective act. ion are delineated in the following FDI's: | ||
Unit 1 Unit 2 Trip Units FDI-WAMD FDI-WBIX l | |||
Unit 1 Unit 2 Trip Units FDI-WAMD FDI-WBIX | |||
l | |||
. _ _ _ -~ | . _ _ _ -~ | ||
r}} | r}} |
Latest revision as of 10:30, 18 February 2020
ML19339A346 | |
Person / Time | |
---|---|
Site: | Grand Gulf ![]() |
Issue date: | 10/22/1980 |
From: | Mcgaughy J MISSISSIPPI POWER & LIGHT CO. |
To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
References | |
REF-PT21-80-205-009 10CFR-050.55E, 10CFR-50.55E, AECM-80-264, NUDOCS 8011030620 | |
Download: ML19339A346 (4) | |
Text
.
. . , . Mdppih j
. PART 21 IDBRIFICATION NO. T56-T.06-oo8i C(FPAW NA"E.4 Lide ca.
u
. IhlE OF LElWA idhu.l*o IDa(ET NO. Ec-%ht1 i DATE DISTRIBlIED to tA to p.m - ORIGIIML REPORT _
StPPLBENTARY 1 DISTRIBlHION:
EACTOR (R) )L FUEL CYCLE & SAEGtRRDS (S)
(I IE FIlfS IE IE FILES AD/ROI IE FIIIS AD/SG All/RCI AD/FRSI AD/RDI EGIONS I,II,Ill,lV,V EGIONS 1,II,Ill,IV,V EGIONS I,II,Ill,IV,V VSO3R BR R-IV VE}O3R BR. R-IV VSO3R BR. R IV .
LDEB / t'PA I4B 5715 RNES / FOS SS-395 NRR/DJL AEOD liG 7602 LDEB/I'PA liG 5715 itBS / SG SS-881 EDD fig 7602 NRR/DJE LDEB / I'PA l4G 5715 NRR/DSI dSLBPFM 450 EOD fig 7602 MT '
SAo/SP 11G-7210A ASLBP FM 450 NRR/D3L -
CENTPALFILES 016 CBERAL FIlfS 016 ASLBP FM 450 CB HPE ~ILES ( W RON) CENTRAL FILES (GR000 CBERALFILES 016 PDR CBffRAL FILES SS-395 CBERAL FIlfS (CHRON) LPDR PDR .
PDR TEPA LPDR M .
TERA
~
ACTION:
PRELIMINARY EVALUATION OF B E' ATTACHED REPORT INDICATES LEAD RESPONSIBILITY FO FOLLOWJP AS SFDWN BELOW:
IE 5 NE 2 f0BS [ OTHER _
@ Sc FFMSI P&,8/1/80 8011 080 Gg K- 'An%
e :-
one. M h to
- 83-2os- coi t
. QghQ MISSISSIPPI POWER & LIGHT COMPANY
- Helping Build Mississippi C,
P. O. B O X 16 40. J A CK S O N. MIS SIS SIP PI 3 9 2 05 YE Yw Yc"M October 22, 1980 Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W.
Suite 3100 Atlanta, Georgia 30303 Attention: Mr. J. P. O'R'eilly, Director
Dear Mr.'O'Reilly:
SUBJECT:
Corand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416/41741 File 0260/15525/15526 PRD-80/ll, Final Report, E.se-mount Model 510 DU Trip /Ca_i-bration Units and Model 1152 Pressure Transmitters AECM-80/264
References:
- 1) AECM-80/31, 1/30/80
- 2) AECM-80/86, 4/25/80
- 3) AECM-80/141, 4/24/80
- 4) AECM-80/147, 7/2/80 on March 27, 1980, Mississippi Power & Light Co=pany notified Mr. F. Cantrell of your office of two Potentially Reportable Defi-ciencies (PRDs) at the Grand Gulf Nuclear Station (GGNS) construc- ,,
tion site. 'These deficiencies concern Rosemount Model 510 DU trip /
calibration units and Model 1152 pressure transmitters.
The deficiency regarding the Model 510 DU Trip Unit was pre-viously reported to you by MP&L as PRD-79/18. Our final report on PRD-79/18 was submitted to your office by the MP&L letter dated January 30, 1980. Our final report on these trip units under !
PRD-80/11 was submitted by the MP&L letter dated June 24, 1980. I We later submitted additional information required by 10CFR21 on this deficiency in our letter dated July 2, 1980. .
Our investigation revealed that the deficiency pertaining '
to the 1152 Pressure Transmitter is reportable within the meaning of 10CFR50.55(e). Our Final Report of this =atter is attached. I l
We are continuing our investigation of this deficiency to deter-cine reportability under 10CFR21. _
l l
. Member Middle South Utilities System
MIIslbS!PPI POWER & LIGHT COMPANY * .
Mr. J. P. O'Reilly AECM-80/264.
NRC , -
~; Page: 2 : - ;
~ Yours truly, y- J. P. McGaufhy, Jr.
WDH:mt Attachment '-" -- ~ '
cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner ~" ' ' - ~ ~ ~' ' '
. . : .' . ~~ .- -
~
Mr. Victor Stello, Director ~
Division of Inspection & Enforcement '
~
- 'I -
U. S. Nuclear Regulator,/ Commissio'n .
' ~ ~ ~
Washington, D.C. 20555 bec: . Dr. D. C. Gibbs-Pa. J. P. McGaughy Mr. J. N. Ward '
Mr. A. Zaccari'a' ~
~
Mr. J. W. Yelverton ;
Pz. L. F. Dale -
Mr.. C. K. McCoy: -
Mr. T. H. Cloniriger
- Mr.' R. A. Ambros'ino.'. _ } ' . . ' '.
[_~ ~ ~ ~ . , . 7 - .__
- Mr '. C. L. Tyrone ;.''~,~~.,
'~~
- Mr.- P. K. VanDoorn '
Mr. A. G. Wagner _
PRD File ,-
File M
9 4
MMBCBIlFlMNRtWt@
~
P gn 1 cf'l s
FINAL REPORT TO PRD-80/11 (Model 510 DU Trip Unit)
I. Description of Deficiency The Rosemount Model 510 DU' Trip / Calibration Unit has a common mode failure of an essential switch that determines the trip output logic. The dalfunction: reverses the logic, thereby .
providing an . erroneous signal. , The trip unit is used in con-junction with the pressure transmitter to provide high or low-trip signals.
II. Safety Implications Due to the inherent safety functions of these devices, failure would adversely affect the safety of operation of Grand Gulf Nucleat Station, Units 1 and 2. As an example, when the Model 510 DU is used as a water level trip unit, the deficiency can result in indicating high reactor water level when actually the' water level is low.
III. Corrective Action Taken General Electric has issued Field Disposition Instructions (FDI's) to return Model 510 DU Trip Units to manufacturer for repair.
Details of the corrective act. ion are delineated in the following FDI's:
Unit 1 Unit 2 Trip Units FDI-WAMD FDI-WBIX l
. _ _ _ -~
r