ML19326A338: Difference between revisions
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51 C^T 58 l@ | 51 C^T 58 l@ | ||
,j[0*T | ,j[0*T | ||
,. l Ll@l 0l 510l -l 01314'l 6 @l G l 5 l G I 9 l 7 l 8 l@l 74 0 i 6REPCRT 75 I O IDATE117 I 880 l@ | ,. l Ll@l 0l 510l -l 01314'l 6 @l G l 5 l G I 9 l 7 l 8 l@l 74 0 i 6REPCRT 75 I O IDATE117 I 880 l@ | ||
3 3 60 El 03:< ET %*.*3 R 6.3 63 EVENT QATE ' | 3 3 60 El 03:< ET %*.*3 R 6.3 63 EVENT QATE ' | ||
EVENT DESCRIPTION ;?40 PRC5 AELE CCNSECUENCES h 10121 1 At 1745 hours on "av 9, 1978. While nerfortine the Diesel Gener2Mr Refuelim Su M 1 l | EVENT DESCRIPTION ;?40 PRC5 AELE CCNSECUENCES h 10121 1 At 1745 hours on "av 9, 1978. While nerfortine the Diesel Gener2Mr Refuelim Su M 1 l | ||
[o;s,l lance Test, the generator load would not stay constant and the diesel generator air I | [o;s,l lance Test, the generator load would not stay constant and the diesel generator air I | ||
'I o l a ; i intake low pressure alar = vas received. The test was susuended at this coint, and thel l o l s t ; diesel generator declared inoperable. There was no danger to the health and safety ofi | 'I o l a ; i intake low pressure alar = vas received. The test was susuended at this coint, and thel l o l s t ; diesel generator declared inoperable. There was no danger to the health and safety ofi I o 16 j l the public or Unit personnel. The diesel Eenerator was not reouired for etE.rtencv l l o { 7 l l Power during the period of time it was inocerable. Diesel Generator 1-2 was ooerable l l c !e i I had e=ergency power been reCuired. (X?-33-78-58) SJ I | ||
I o 16 j l the public or Unit personnel. The diesel Eenerator was not reouired for etE.rtencv l l o { 7 l l Power during the period of time it was inocerable. Diesel Generator 1-2 was ooerable l l c !e i I had e=ergency power been reCuired. (X?-33-78-58) SJ I | |||
7 8 9 C o?.t P. VALVE SYSTE*.? CA*.II CAUSE CoCE CO:t SV3COct CcYPoNENT CODE SUBCODE SU8CCDE loisi 7 8 I El 31@ l x l@1: l x l@ IE IN ic II lx II l@la lxi@ lxi@ | 7 8 9 C o?.t P. VALVE SYSTE*.? CA*.II CAUSE CoCE CO:t SV3COct CcYPoNENT CODE SUBCODE SU8CCDE loisi 7 8 I El 31@ l x l@1: l x l@ IE IN ic II lx II l@la lxi@ lxi@ | ||
9 10 in 12 18 23 OCCURRENCE, REPORT REVIStoN SEoCENTial | 9 10 in 12 18 23 OCCURRENCE, REPORT REVIStoN SEoCENTial EVENT YEAR R EPC AT NC. CCOE TYPE No. | ||
EVENT YEAR R EPC AT NC. CCOE TYPE No. | |||
LER mo | LER mo | ||
@ aE>:aT 17 18 l l_l lc i419 l l-] I01 31 lLl l_I 10 l | @ aE>:aT 17 18 l l_l lc i419 l l-] I01 31 lLl l_I 10 l | ||
Line 44: | Line 39: | ||
t 41 4 44 47 | t 41 4 44 47 | ||
\ / 35 26 37 to 42 CAUSE DESCRIPTION AND CCRRECT!VE AC lCNS @ | \ / 35 26 37 to 42 CAUSE DESCRIPTION AND CCRRECT!VE AC lCNS @ | ||
l i l o ; l The cause of this occurrence is not known. Extensive =aintenance investications were l | l i l o ; l The cause of this occurrence is not known. Extensive =aintenance investications were l li ii l l conducteld but the exact cause was not discovered. At 0415 hours on Mav 14 1978. | ||
li ii l l conducteld but the exact cause was not discovered. At 0415 hours on Mav 14 1978. | |||
,,,,,jSurveillance Test ST 5081.01, " Diesel Generator Menthlv Test" was co=cleted. and the l l,,3, i diosel generator was declared coerable. l 1 | ,,,,,jSurveillance Test ST 5081.01, " Diesel Generator Menthlv Test" was co=cleted. and the l l,,3, i diosel generator was declared coerable. l 1 | ||
lt i 4-l l 80 7 8 9 ERY DISCOVERY o!$CRIPTioM | lt i 4-l l 80 7 8 9 ERY DISCOVERY o!$CRIPTioM | ||
'YA | 'YA | ||
$ %*CwER oTHER STATUS 15 l | $ %*CwER oTHER STATUS 15 l | ||
l t is l l c l@ l0 (0 l0 l@ nKA l 13 l@lsurveillanceTestsT 5081.02 | l t is l l c l@ l0 (0 l0 l@ nKA l 13 l@lsurveillanceTestsT 5081.02 u 4 4 ,0 | ||
u 4 4 ,0 | |||
' '2 | ' '2 | ||
'JTiviTY Cc'ETENT teC2TioNo,REtEAsE@ | 'JTiviTY Cc'ETENT teC2TioNo,REtEAsE@ | ||
Line 66: | Line 57: | ||
; g g 10 | ; g g 10 | ||
*' lI PHONE: b19~2 " ~-" 253 E-N A!.* E C F P D E P AR E R , | *' lI PHONE: b19~2 " ~-" 253 E-N A!.* E C F P D E P AR E R , | ||
= | = | ||
TOLEDO EDISON' COMPANY DAVIS-3 ESSE UNIT ONE NUCLEAR PO*4ER STATION | TOLEDO EDISON' COMPANY DAVIS-3 ESSE UNIT ONE NUCLEAR PO*4ER STATION | ||
,' _D SUPPLDEUAL INFORMATION FOR LER NP-33-78-38 | ,' _D SUPPLDEUAL INFORMATION FOR LER NP-33-78-38 | ||
( ) | ( ) | ||
,, e | ,, e DATE OF EVENT: May 9, 19 78 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Diesel Generator 1-1 declared inoperable on May 9, 1978. | ||
DATE OF EVENT: May 9, 19 78 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Diesel Generator 1-1 declared inoperable on May 9, 1978 | |||
Conditions Prior to Occurrence: The unit was in Mode 6, with Power (}%T) = 0, and Load (Mh'E) = 0. | Conditions Prior to Occurrence: The unit was in Mode 6, with Power (}%T) = 0, and Load (Mh'E) = 0. | ||
Descriution of occurrence: At 1745 hours on May 9,1978, while perfor=ing Surveil-lance Test ST 5081.02, " Diesel Generator Refueling Surveillance Test", the genera-tor load would not stay constant and the diesel generator air intake low pressure alarm was received. The test was suspended at this point, and the diesel generator declared inoperable. | Descriution of occurrence: At 1745 hours on May 9,1978, while perfor=ing Surveil-lance Test ST 5081.02, " Diesel Generator Refueling Surveillance Test", the genera-tor load would not stay constant and the diesel generator air intake low pressure alarm was received. The test was suspended at this point, and the diesel generator declared inoperable. | ||
This occurrence did not place the unit in the Action Statenent of the Technical Specification 3.8.1.2 because the plant Was in Mode 6 which requires only one diesel generator to be operable while in Modes 5 and 6. | This occurrence did not place the unit in the Action Statenent of the Technical Specification 3.8.1.2 because the plant Was in Mode 6 which requires only one diesel generator to be operable while in Modes 5 and 6. | ||
Line 93: | Line 73: | ||
Corrective Action: Under Maintenance Work Order IC-322-78, Diesel Generator 1-1 Air Intake Lov Pressure Switch was checked for calibration and operation. It was found satis %ctory. Under Maintenance Work Orders 78-1184 and 78-1192 unit per-sonnel worken with Woodvard field service engineers to assure proper governor operation. Maintenance Work Order 78-1209 was issued to check Diesel Generator 1-1 intake air pressure, all inlet pipe joints for leakage, oil bath filter for blockage and found none. | Corrective Action: Under Maintenance Work Order IC-322-78, Diesel Generator 1-1 Air Intake Lov Pressure Switch was checked for calibration and operation. It was found satis %ctory. Under Maintenance Work Orders 78-1184 and 78-1192 unit per-sonnel worken with Woodvard field service engineers to assure proper governor operation. Maintenance Work Order 78-1209 was issued to check Diesel Generator 1-1 intake air pressure, all inlet pipe joints for leakage, oil bath filter for blockage and found none. | ||
At 0415 hours on 167 14, 1978, Surveillance Test ST 5081.01, " Diesel Generator Monthly Test" was cc=pleted, and the diesel generator was declared operable. | At 0415 hours on 167 14, 1978, Surveillance Test ST 5081.01, " Diesel Generator Monthly Test" was cc=pleted, and the diesel generator was declared operable. | ||
vailure Data: There have been no previous failures of the Diesel Generators | vailure Data: There have been no previous failures of the Diesel Generators used by load fluctuations. | ||
LER #78-049 | LER #78-049 | ||
.}} | .}} |
Latest revision as of 01:19, 1 February 2020
ML19326A338 | |
Person / Time | |
---|---|
Site: | Davis Besse ![]() |
Issue date: | 06/01/1978 |
From: | Beeler T TOLEDO EDISON CO. |
To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
Shared Package | |
ML19326A303 | List: |
References | |
LER-78-049-03L, LER-78-49-3L, NUDOCS 8002030156 | |
Download: ML19326A338 (2) | |
Text
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EVENT DESCRIPTION ;?40 PRC5 AELE CCNSECUENCES h 10121 1 At 1745 hours0.0202 days <br />0.485 hours <br />0.00289 weeks <br />6.639725e-4 months <br /> on "av 9, 1978. While nerfortine the Diesel Gener2Mr Refuelim Su M 1 l
[o;s,l lance Test, the generator load would not stay constant and the diesel generator air I
'I o l a ; i intake low pressure alar = vas received. The test was susuended at this coint, and thel l o l s t ; diesel generator declared inoperable. There was no danger to the health and safety ofi I o 16 j l the public or Unit personnel. The diesel Eenerator was not reouired for etE.rtencv l l o { 7 l l Power during the period of time it was inocerable. Diesel Generator 1-2 was ooerable l l c !e i I had e=ergency power been reCuired. (X?-33-78-58) SJ I
7 8 9 C o?.t P. VALVE SYSTE*.? CA*.II CAUSE CoCE CO:t SV3COct CcYPoNENT CODE SUBCODE SU8CCDE loisi 7 8 I El 31@ l x l@1: l x l@ IE IN ic II lx II l@la lxi@ lxi@
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,,,,,jSurveillance Test ST 5081.01, " Diesel Generator Menthlv Test" was co=cleted. and the l l,,3, i diosel generator was declared coerable. l 1
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TOLEDO EDISON' COMPANY DAVIS-3 ESSE UNIT ONE NUCLEAR PO*4ER STATION
,' _D SUPPLDEUAL INFORMATION FOR LER NP-33-78-38
( )
,, e DATE OF EVENT: May 9, 19 78 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Diesel Generator 1-1 declared inoperable on May 9, 1978.
Conditions Prior to Occurrence: The unit was in Mode 6, with Power (}%T) = 0, and Load (Mh'E) = 0.
Descriution of occurrence: At 1745 hours0.0202 days <br />0.485 hours <br />0.00289 weeks <br />6.639725e-4 months <br /> on May 9,1978, while perfor=ing Surveil-lance Test ST 5081.02, " Diesel Generator Refueling Surveillance Test", the genera-tor load would not stay constant and the diesel generator air intake low pressure alarm was received. The test was suspended at this point, and the diesel generator declared inoperable.
This occurrence did not place the unit in the Action Statenent of the Technical Specification 3.8.1.2 because the plant Was in Mode 6 which requires only one diesel generator to be operable while in Modes 5 and 6.
I h
\
' Designation of Accarent Cause of Occurrence: The cause of this occurrence is not known.
Analysis of Occurrence:
There was no danger to the health and safety of the public or to unit personnel. The diesel generator was not required for energency power during the period of ti=e it was inoperable. Diesel Generator 1-2 yas operable had e=ergency power been required.
Corrective Action: Under Maintenance Work Order IC-322-78, Diesel Generator 1-1 Air Intake Lov Pressure Switch was checked for calibration and operation. It was found satis %ctory. Under Maintenance Work Orders 78-1184 and 78-1192 unit per-sonnel worken with Woodvard field service engineers to assure proper governor operation. Maintenance Work Order 78-1209 was issued to check Diesel Generator 1-1 intake air pressure, all inlet pipe joints for leakage, oil bath filter for blockage and found none.
At 0415 hours0.0048 days <br />0.115 hours <br />6.861772e-4 weeks <br />1.579075e-4 months <br /> on 167 14, 1978, Surveillance Test ST 5081.01, " Diesel Generator Monthly Test" was cc=pleted, and the diesel generator was declared operable.
vailure Data: There have been no previous failures of the Diesel Generators used by load fluctuations.
LER #78-049
.