ML19210D652: Difference between revisions
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NRC FORM 366 (7 77) | NRC FORM 366 (7 77) | ||
LICENSEE EVENT REPORT | LICENSEE EVENT REPORT | ||
. CONTROL BLOCK: l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 l | . CONTROL BLOCK: l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 l | ||
7 0 1 8 9 l0 HlDlBlSl1l@l0l@l-l0 LICENSEE CODE 14 15 0lNlPlFl-l0l3l@l4 LICENSE NLVtlEH 25 1l1l1l1 26 LICENSE@l TYPE JJ 7 LA1 5 l@ | 7 0 1 8 9 l0 HlDlBlSl1l@l0l@l-l0 LICENSEE CODE 14 15 0lNlPlFl-l0l3l@l4 LICENSE NLVtlEH 25 1l1l1l1 26 LICENSE@l TYPE JJ 7 LA1 5 l@ | ||
$3 CON'T | $3 CON'T I0l1l 7 8 3[nc 60 Ll@ dl5l0l- 0l314l6 @l1 0l2l2l7l9l@l1 l1 l2 l0 l7 l9 l@ | ||
I0l1l 7 8 3[nc 60 Ll@ dl5l0l- 0l314l6 @l1 0l2l2l7l9l@l1 l1 l2 l0 l7 l9 l@ | |||
61 DOCKET NUMBEH 68 69 EVENT D ATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h i | 61 DOCKET NUMBEH 68 69 EVENT D ATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h i | ||
o 2 [_On October 22, 1979 at 0906 hours durine the perf ormance of ST 5071.01. "Anvilt,rv o 3 l Feedwatar System Monthlv Test". it was obset;t - that there was no oil level visible in) | o 2 [_On October 22, 1979 at 0906 hours durine the perf ormance of ST 5071.01. "Anvilt,rv o 3 l Feedwatar System Monthlv Test". it was obset;t - that there was no oil level visible in) | ||
I | I o 4 lthe oil sight glass on the inboard bearinn of the Auxiliary Feed Pumn Turbine 1-1. | ||
o 4 lthe oil sight glass on the inboard bearinn of the Auxiliary Feed Pumn Turbine 1-1. | |||
I o s This placed the unit in the Action Statement of Technical Soecifica tion 3.7.1.2. | I o s This placed the unit in the Action Statement of Technical Soecifica tion 3.7.1.2. | ||
""n n._] | ""n n._] | ||
l o l6 ] l There was no danner to the health and safety of the oublic or station cercon*1. | l o l6 ] l There was no danner to the health and safety of the oublic or station cercon*1. | ||
(NP-33-79-119) l 1017l second train. Auxiliary Feed Pumo 1-2. was ooerable. | (NP-33-79-119) l 1017l second train. Auxiliary Feed Pumo 1-2. was ooerable. | ||
I o a f 80 CAUSE COMP. VA LV E SYSTEM CAUSE SUSCODE SUBCODE COMPONENT CODE SU8 CODE CODE CODE l0l91 l Cl11l@ lE j@ lB l@ l Pl U] Ml Pl X] Xl@ W@ W @ 13 18 19 20 8 9 10 11 12 REVi?ON 7 REPORT SEQUE NTI AL OCCURRENCE | I o a f 80 CAUSE COMP. VA LV E SYSTEM CAUSE SUSCODE SUBCODE COMPONENT CODE SU8 CODE CODE CODE l0l91 l Cl11l@ lE j@ lB l@ l Pl U] Ml Pl X] Xl@ W@ W @ 13 18 19 20 8 9 10 11 12 REVi?ON 7 REPORT SEQUE NTI AL OCCURRENCE CODE TYPE NO. | ||
CODE TYPE NO. | |||
,_ EVENT YE AR REPORT NO. | ,_ EVENT YE AR REPORT NO. | ||
h gU LE R RO AEP RT l7 9l l_l l1 l0 2 l 26 l/l 27 l0l3] | h gU LE R RO AEP RT l7 9l l_l l1 l0 2 l 26 l/l 27 l0l3] | ||
| Line 44: | Line 37: | ||
J2 | J2 | ||
_21 22 23 24 FO 1 B. S PP IE MA FA T RER K f ACT Of ON PL PT HOURS 22 S 8 IT O lBlgl34z g lJ5Z lg l0 l0 l0 lV 40l lYlg lNj@ l Al@ l Tl 1l4 l7 l@ | _21 22 23 24 FO 1 B. S PP IE MA FA T RER K f ACT Of ON PL PT HOURS 22 S 8 IT O lBlgl34z g lJ5Z lg l0 l0 l0 lV 40l lYlg lNj@ l Al@ l Tl 1l4 l7 l@ | ||
33 l30Zl@ 31 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o ]The loss of oil was due to a loose sieht glass. The glass had apparent 1v vibrated | 33 l30Zl@ 31 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o ]The loss of oil was due to a loose sieht glass. The glass had apparent 1v vibrated 11 11) loose at its fitting. Under Maintenance Uork Order 79-3321 the sight class was 1 l tightened and the oil replaced. Surveillance Test ST 071.01 was completed at 2004 1 1 7 l | ||
11 11) loose at its fitting. Under Maintenance Uork Order 79-3321 the sight class was 1 | |||
l tightened and the oil replaced. Surveillance Test ST 071.01 was completed at 2004 1 1 7 l | |||
J l i l 3 l l hours on October 22, 1979, and Auxiliary Feed Pump 1-1 was declared operable. | J l i l 3 l l hours on October 22, 1979, and Auxiliary Feed Pump 1-1 was declared operable. | ||
l l i l 41 1 80 | l l i l 41 1 80 | ||
| Line 56: | Line 45: | ||
44 45 7 8 9 10._ 11 PERSONNEL EXPOSURES NUMBER l | 44 45 7 8 9 10._ 11 PERSONNEL EXPOSURES NUMBER l | ||
[ i 7 l0]O Ol@lTYPE ] @[ NA DESCRIPTION ' | [ i 7 l0]O Ol@lTYPE ] @[ NA DESCRIPTION ' | ||
,eRSONNE L iN;uLS NuvsER oESCRiPTiONh l NA | |||
,eRSONNE L iN;uLS | |||
NuvsER oESCRiPTiONh l NA | |||
~ Ii ls i8 1010101@l 7 9 11 12 LOSS OF OR D AY AGE TO F ACILITY | ~ Ii ls i8 1010101@l 7 9 11 12 LOSS OF OR D AY AGE TO F ACILITY | ||
, e iT gi E'~ | , e iT gi E'~ | ||
i | i 1wA X2 60 1 | ||
1wA X2 60 1 | |||
7 8 9 10 | 7 8 9 10 | ||
'* 7911270 g [ NR use ONLY lll l; 2 o lNf l NA iSSuI"@""'o'ESCR'PTiONO 10 l | '* 7911270 g [ NR use ONLY lll l; 2 o lNf l NA iSSuI"@""'o'ESCR'PTiONO 10 l | ||
| Line 71: | Line 54: | ||
7 H 3 W-M4M, M. M DVR 79-155 NAME OF PnEPAnEn Kevin Melstad pgoyg { | 7 H 3 W-M4M, M. M DVR 79-155 NAME OF PnEPAnEn Kevin Melstad pgoyg { | ||
& e TOLEDO EDISON COMPANY DAVIS-BESSE NUCLEAR POWER ST.uION UNIT ONE SUPPLEMENTAL INFORMATION FOR LER NP-33-79-119 DATE OF EVENT: October 22, 1979 | & e TOLEDO EDISON COMPANY DAVIS-BESSE NUCLEAR POWER ST.uION UNIT ONE SUPPLEMENTAL INFORMATION FOR LER NP-33-79-119 DATE OF EVENT: October 22, 1979 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Auxiliary Feed Pump 1-1 inoperable Conditions Prior to Occurrence: The unit was in Mode 1, with Power (MWT) = 2400, and Load (Gross FME) = 790. | ||
Description of Occurrence: At 0906 heres on October 22, 1979 while performing Surveil-lance Test ST 5071.01, " Auxiliary Feedwater System Monthly Test", it was found that the number one Auxiliary Feed Pump Turbine inbaard bearing had no visible oil level in the oil sight glass. | |||
FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Auxiliary Feed Pump 1-1 inoperable Conditions Prior to Occurrence: The unit was in Mode 1, with Power (MWT) = 2400, and Load (Gross FME) = 790 | |||
Description of Occurrence: At 0906 heres on October 22, 1979 while performing Surveil-lance Test ST 5071.01, " Auxiliary Feedwater System Monthly Test", it was found that the | |||
number one Auxiliary Feed Pump Turbine inbaard bearing had no visible oil level in the oil sight glass. | |||
This placed the unit in the Action Statement of Technical Specification 3.7.1.2 which requires that with one pump inoperable, the isoperable pump be repaired within 72 hours or be in hot shutdown within the next 12 hours The Technical Specification requires operability of both Auxiliary Feed Pumps while 'n Modes 1, 2, and 3. | This placed the unit in the Action Statement of Technical Specification 3.7.1.2 which requires that with one pump inoperable, the isoperable pump be repaired within 72 hours or be in hot shutdown within the next 12 hours The Technical Specification requires operability of both Auxiliary Feed Pumps while 'n Modes 1, 2, and 3. | ||
Designation of Apparent Cause of Occurrence: The casse of the occurrence was due to the oil level sight glass becoming loose due to vibracion of the Auxiliary Feed Pump Turbine. Oil drained from the loose fitting. | Designation of Apparent Cause of Occurrence: The casse of the occurrence was due to the oil level sight glass becoming loose due to vibracion of the Auxiliary Feed Pump Turbine. Oil drained from the loose fitting. | ||
| Line 83: | Line 61: | ||
Corrective Action: Under Maintenance Work Order 79-3321, the bearing sight glass was tightened. The sight glass was found to be loose and not seating properly. The oil icvel has remained constant since tightening. Oil sight glasses will be installed using a sealing compound. Surveillance Test ST 5071.01 was completed at 2004 hours on October 22, 1979, and Auxiliary Feed Pump 1-1 was declared operable. The unit was removed from the Action Statement. | Corrective Action: Under Maintenance Work Order 79-3321, the bearing sight glass was tightened. The sight glass was found to be loose and not seating properly. The oil icvel has remained constant since tightening. Oil sight glasses will be installed using a sealing compound. Surveillance Test ST 5071.01 was completed at 2004 hours on October 22, 1979, and Auxiliary Feed Pump 1-1 was declared operable. The unit was removed from the Action Statement. | ||
Failure Data: A similar occurrence with containment spray pump oil sight glass was reported in Licensee Event Report NP-33-79-83. | Failure Data: A similar occurrence with containment spray pump oil sight glass was reported in Licensee Event Report NP-33-79-83. | ||
LER #79-102 | LER #79-102 i798 ?93}} | ||
i798 ?93}} | |||
Latest revision as of 05:15, 2 February 2020
| ML19210D652 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 11/20/1979 |
| From: | Melstad K TOLEDO EDISON CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML19210D639 | List: |
| References | |
| LER-79-102-03L, LER-79-102-3L, NUDOCS 7911270428 | |
| Download: ML19210D652 (2) | |
Text
. , ,
NRC FORM 366 (7 77)
LICENSEE EVENT REPORT
. CONTROL BLOCK: l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 l
7 0 1 8 9 l0 HlDlBlSl1l@l0l@l-l0 LICENSEE CODE 14 15 0lNlPlFl-l0l3l@l4 LICENSE NLVtlEH 25 1l1l1l1 26 LICENSE@l TYPE JJ 7 LA1 5 l@
$3 CON'T I0l1l 7 8 3[nc 60 Ll@ dl5l0l- 0l314l6 @l1 0l2l2l7l9l@l1 l1 l2 l0 l7 l9 l@
61 DOCKET NUMBEH 68 69 EVENT D ATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h i
o 2 [_On October 22, 1979 at 0906 hours0.0105 days <br />0.252 hours <br />0.0015 weeks <br />3.44733e-4 months <br /> durine the perf ormance of ST 5071.01. "Anvilt,rv o 3 l Feedwatar System Monthlv Test". it was obset;t - that there was no oil level visible in)
I o 4 lthe oil sight glass on the inboard bearinn of the Auxiliary Feed Pumn Turbine 1-1.
I o s This placed the unit in the Action Statement of Technical Soecifica tion 3.7.1.2.
""n n._]
l o l6 ] l There was no danner to the health and safety of the oublic or station cercon*1.
(NP-33-79-119) l 1017l second train. Auxiliary Feed Pumo 1-2. was ooerable.
I o a f 80 CAUSE COMP. VA LV E SYSTEM CAUSE SUSCODE SUBCODE COMPONENT CODE SU8 CODE CODE CODE l0l91 l Cl11l@ lE j@ lB l@ l Pl U] Ml Pl X] Xl@ W@ W @ 13 18 19 20 8 9 10 11 12 REVi?ON 7 REPORT SEQUE NTI AL OCCURRENCE CODE TYPE NO.
,_ EVENT YE AR REPORT NO.
h gU LE R RO AEP RT l7 9l l_l l1 l0 2 l 26 l/l 27 l0l3]
28 23 lL]
30 l-l 31 J
J2
_21 22 23 24 FO 1 B. S PP IE MA FA T RER K f ACT Of ON PL PT HOURS 22 S 8 IT O lBlgl34z g lJ5Z lg l0 l0 l0 lV 40l lYlg lNj@ l Al@ l Tl 1l4 l7 l@
33 l30Zl@ 31 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o ]The loss of oil was due to a loose sieht glass. The glass had apparent 1v vibrated 11 11) loose at its fitting. Under Maintenance Uork Order 79-3321 the sight class was 1 l tightened and the oil replaced. Surveillance Test ST 071.01 was completed at 2004 1 1 7 l
J l i l 3 l l hours on October 22, 1979, and Auxiliary Feed Pump 1-1 was declared operable.
l l i l 41 1 80
' 8 9 ISCO iY DISCOVERY DESCRIPTION STA S % POWER OTHER STATUS
~ l1l5l W @ l Ol 8l 8l hl NA l lB l@l Operator observation l ACTIVITY CONTENT LOCATION OF RELEASE RELE ASEO OF RELE ASE AMOUNT OF ACTIVITY
.' l 1 16I W @[Zj@l NA l l NA 80 l
44 45 7 8 9 10._ 11 PERSONNEL EXPOSURES NUMBER l
[ i 7 l0]O Ol@lTYPE ] @[ NA DESCRIPTION '
,eRSONNE L iN;uLS NuvsER oESCRiPTiONh l NA
~ Ii ls i8 1010101@l 7 9 11 12 LOSS OF OR D AY AGE TO F ACILITY
, e iT gi E'~
i 1wA X2 60 1
7 8 9 10
'* 7911270 g [ NR use ONLY lll l; 2 o lNf l NA iSSuI"@""'o'ESCR'PTiONO 10 l
68 09 l lll ll SJ ;
7 H 3 W-M4M, M. M DVR 79-155 NAME OF PnEPAnEn Kevin Melstad pgoyg {
& e TOLEDO EDISON COMPANY DAVIS-BESSE NUCLEAR POWER ST.uION UNIT ONE SUPPLEMENTAL INFORMATION FOR LER NP-33-79-119 DATE OF EVENT: October 22, 1979 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Auxiliary Feed Pump 1-1 inoperable Conditions Prior to Occurrence: The unit was in Mode 1, with Power (MWT) = 2400, and Load (Gross FME) = 790.
Description of Occurrence: At 0906 heres on October 22, 1979 while performing Surveil-lance Test ST 5071.01, " Auxiliary Feedwater System Monthly Test", it was found that the number one Auxiliary Feed Pump Turbine inbaard bearing had no visible oil level in the oil sight glass.
This placed the unit in the Action Statement of Technical Specification 3.7.1.2 which requires that with one pump inoperable, the isoperable pump be repaired within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in hot shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> The Technical Specification requires operability of both Auxiliary Feed Pumps while 'n Modes 1, 2, and 3.
Designation of Apparent Cause of Occurrence: The casse of the occurrence was due to the oil level sight glass becoming loose due to vibracion of the Auxiliary Feed Pump Turbine. Oil drained from the loose fitting.
Analysis of Occurrence: There was no danger to the health and safety of the public or to station personnel. Auxiliary Feed Pump 1-2 was operable during this time.
Corrective Action: Under Maintenance Work Order 79-3321, the bearing sight glass was tightened. The sight glass was found to be loose and not seating properly. The oil icvel has remained constant since tightening. Oil sight glasses will be installed using a sealing compound. Surveillance Test ST 5071.01 was completed at 2004 hours0.0232 days <br />0.557 hours <br />0.00331 weeks <br />7.62522e-4 months <br /> on October 22, 1979, and Auxiliary Feed Pump 1-1 was declared operable. The unit was removed from the Action Statement.
Failure Data: A similar occurrence with containment spray pump oil sight glass was reported in Licensee Event Report NP-33-79-83.
LER #79-102 i798 ?93