ML19308D557: Difference between revisions
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{{#Wiki_filter:_ __ _ _ _ - | {{#Wiki_filter:_ __ _ _ _ - | ||
i | i Lil,tlWtt CV CPJ i MCPUMI ik* * , | ||
Lil,tlWtt CV CPJ i MCPUMI | |||
ik* * , | |||
CONTROL BLOC. l l l l l l (PLEASE PRINT ALL RtCUtRED INFCRM AT*C. | CONTROL BLOC. l l l l l l (PLEASE PRINT ALL RtCUtRED INFCRM AT*C. | ||
6 | 6 | ||
{ ~ | { ~ | ||
1 i | 1 i | ||
[ AME UCENSE NUMBER | [ AME UCENSE NUMBER | ||
, PE | , PE | ||
, (J | , (J | ||
,7 l FlL 89 l ClR lP l314l l0 l0 l-l0 l 0 l 0 l 0 l 0 l-l 0 l 0 l l 4 l1 l1 l1 l 1l l0 l3 l 25 32 | ,7 l FlL 89 l ClR lP l314l l0 l0 l-l0 l 0 l 0 l 0 l 0 l-l 0 l 0 l l 4 l1 l1 l1 l 1l l0 l3 l 25 32 | ||
.; | .; | ||
15 26 30 31 | 15 26 30 31 CATEcoRY " 7PE T E CoCKET NUMBER | ||
* EVENT oATE REPORT CATE l 0 1 CON'T l 7 8 l_l l Ll lo l5 l0 l-l0 l3 l0 l? l l0 l7 l0 l2 l7 l7l l 0 l 7 l2 l8 l7 l~, | * EVENT oATE REPORT CATE l 0 1 CON'T l 7 8 l_l l Ll lo l5 l0 l-l0 l3 l0 l? l l0 l7 l0 l2 l7 l7l l 0 l 7 l2 l8 l7 l~, | ||
57 $8 59 60 61 68 69 74 75 t EVENT DESCRIPTION I gg l In mode 2 operation while performing operability test of rod 3 group 6 API, the absolute j 7 89 . | 57 $8 59 60 61 68 69 74 75 t EVENT DESCRIPTION I gg l In mode 2 operation while performing operability test of rod 3 group 6 API, the absolute j 7 89 . | ||
t ! | t ! | ||
, Ql 7 89 position indication for all regulating rods was lost, creating a ec.2dition as defined | , Ql 7 89 position indication for all regulating rods was lost, creating a ec.2dition as defined L | ||
l Ql by Tech Spec 3.0.3. Redundancy was maintained with the relative position indication. | |||
Ql by Tech Spec 3.0.3. Redundancy was maintained with the relative position indication. | |||
7 89 L l | 7 89 L l | ||
, Ql 7 09 This was a non-repetitive occurrence. Maintenance restored the API system operable | , Ql 7 09 This was a non-repetitive occurrence. Maintenance restored the API system operable | ||
, E DE l within 8 minutes. (LER 77-75) 7 89 m,, E, EE CCCE | , E DE l within 8 minutes. (LER 77-75) 7 89 m,, E, EE CCCE COMpor4ENT CCCE ACT 4 VCLATCN Q lIl Dl lF l 7 89 10 l Il Nl S l Tl Rl Ul lNl l Dl1 l 5 l 0 l g , | ||
COMpor4ENT CCCE ACT 4 VCLATCN Q lIl Dl lF l 7 89 10 l Il Nl S l Tl Rl Ul lNl l Dl1 l 5 l 0 l g , | |||
11 12 17 43 44 47 48 . | 11 12 17 43 44 47 48 . | ||
CAUSE DESCRIPTION 'p ;~ | CAUSE DESCRIPTION 'p ;~ | ||
e l The 15 volt power supplies for the API system crowbarred due to a spike of unknown 7 89 6-0 l origin and were reset restoring system operability; 6 | e l The 15 volt power supplies for the API system crowbarred due to a spike of unknown 7 89 6-0 l origin and were reset restoring system operability; 6 | ||
f , | f , | ||
9 | 9 | ||
* E l | * E l | ||
's'TE % POWER oTHER STATUS -Cr5 CVERY e6 COWRY CESCMT:CN l | 's'TE % POWER oTHER STATUS -Cr5 CVERY e6 COWRY CESCMT:CN l | ||
Q 70 | Q 70 | ||
Line 65: | Line 51: | ||
ACTMTV CCATENT - | ACTMTV CCATENT - | ||
RELEASEO AMCUNT OF ACTMTV LOCAT:CN CF RELEASE 1 | RELEASEO AMCUNT OF ACTMTV LOCAT:CN CF RELEASE 1 | ||
] CFyRELEASE l NA l l NA 7 8 .9 10 11 44 45 , St PERSONNEL EXPOSURES NUMBER TYPE DESC341PTICN Q l0 l0 l0 l 7 89 11 Wl12 13 NA Es | ] CFyRELEASE l NA l l NA 7 8 .9 10 11 44 45 , St PERSONNEL EXPOSURES NUMBER TYPE DESC341PTICN Q l0 l0 l0 l 7 89 11 Wl12 13 NA Es PERSONNEL INJUAIES - | ||
NUMBER DESCRPTON E l0l0l0_l l NA 7 89 11 .12 , | |||
PERSONNEL INJUAIES - | |||
NUMBER DESCRPTON E l0l0l0_l | |||
l NA 7 89 11 .12 , | |||
SC OFFSITE CONSECUENCES | SC OFFSITE CONSECUENCES | ||
,Ql - | ,Ql - | ||
NA - - | NA - - | ||
l | l 7 89 Bt LOSS OR OAMAGE TO FAC:UTY TYPE CESCRPTON . | ||
7 89 Bt LOSS OR OAMAGE TO FAC:UTY TYPE CESCRPTON . | |||
1 7 89 bl 10 NA LC PUBUCITY l 17 l NA I | 1 7 89 bl 10 NA LC PUBUCITY l 17 l NA I | ||
7 89 UC | 7 89 UC | ||
, ADDITIONAL FACTORS as89 | , ADDITIONAL FACTORS as89 | ||
}l See attached Supplementary Information | }l See attached Supplementary Information 8 0 02 280 fp 7 89 , to NAME: | ||
W. P. Stewart PHONE: (813) 866-4159 | W. P. Stewart PHONE: (813) 866-4159 | ||
, _q,- l . | , _q,- l . | ||
cPo one.ssT l _ _ _ _ . | cPo one.ssT l _ _ _ _ . | ||
. ~ | . ~ | ||
~ ~ ' | ~ ~ ' | ||
SUPPLDfENTARY INFORMATION | SUPPLDfENTARY INFORMATION | ||
~,,.. | ~,,.. | ||
N. Report No.: 302/77-75 . | |||
4 | 4 | ||
: 2. Facility: Crystal River Unit #3 * | : 2. Facility: Crystal River Unit #3 * | ||
Line 105: | Line 75: | ||
: 4. Occurrence Date: 2 July 1977 | : 4. Occurrence Date: 2 July 1977 | ||
: 5. Identification of Occurrence: | : 5. Identification of Occurrence: | ||
The loss of all absolute position indication resulted in a limiting condition for operation in excess of those addressed in the Specifications as defined by Technical Specification 3.0.3. | The loss of all absolute position indication resulted in a limiting condition for operation in excess of those addressed in the Specifications as defined by Technical Specification 3.0.3. | ||
: 6. Conditions Prior to Occurrence: | : 6. Conditions Prior to Occurrence: | ||
Mode 2 startup operation. | Mode 2 startup operation. | ||
: 7. Description of Occurrence: . | : 7. Description of Occurrence: . | ||
At 0435 while performing operability test of the absolute position indication of rod 3 of .:. | At 0435 while performing operability test of the absolute position indication of rod 3 of .:. | ||
group 6, the absolute position indication for all rods was lost. The Electrical Supervisor '' i was immediately notified and preparations were made to go to hot standby within 1 hour, as required by Technical Specifications. The v.ssolute position indication system was restored operable within 8 minutes. | group 6, the absolute position indication for all rods was lost. The Electrical Supervisor '' i was immediately notified and preparations were made to go to hot standby within 1 hour, as required by Technical Specifications. The v.ssolute position indication system was restored operable within 8 minutes. | ||
Designation of Apparent Cause: | Designation of Apparent Cause: | ||
An apparent , spike from an unknown origin causet a crowbar of the API 15 alt power supplies. The power supplies were reset and th 1 API system restored operable. | An apparent , spike from an unknown origin causet a crowbar of the API 15 alt power supplies. The power supplies were reset and th 1 API system restored operable. | ||
Line 124: | Line 90: | ||
i This was not a repetitive occurrence. | i This was not a repetitive occurrence. | ||
; | ; | ||
- - .-- .. .. - -}} | - - .-- .. .. - -}} |
Revision as of 12:39, 1 February 2020
ML19308D557 | |
Person / Time | |
---|---|
Site: | Crystal River |
Issue date: | 07/28/1977 |
From: | Stewart W FLORIDA POWER CORP. |
To: | |
Shared Package | |
ML19308D554 | List: |
References | |
NUDOCS 8002280987 | |
Download: ML19308D557 (2) | |
Text
_ __ _ _ _ -
i Lil,tlWtt CV CPJ i MCPUMI ik* * ,
CONTROL BLOC. l l l l l l (PLEASE PRINT ALL RtCUtRED INFCRM AT*C.
6
{ ~
1 i
[ AME UCENSE NUMBER
, PE
, (J
,7 l FlL 89 l ClR lP l314l l0 l0 l-l0 l 0 l 0 l 0 l 0 l-l 0 l 0 l l 4 l1 l1 l1 l 1l l0 l3 l 25 32
.;
15 26 30 31 CATEcoRY " 7PE T E CoCKET NUMBER
- EVENT oATE REPORT CATE l 0 1 CON'T l 7 8 l_l l Ll lo l5 l0 l-l0 l3 l0 l? l l0 l7 l0 l2 l7 l7l l 0 l 7 l2 l8 l7 l~,
57 $8 59 60 61 68 69 74 75 t EVENT DESCRIPTION I gg l In mode 2 operation while performing operability test of rod 3 group 6 API, the absolute j 7 89 .
t !
, Ql 7 89 position indication for all regulating rods was lost, creating a ec.2dition as defined L
l Ql by Tech Spec 3.0.3. Redundancy was maintained with the relative position indication.
7 89 L l
, Ql 7 09 This was a non-repetitive occurrence. Maintenance restored the API system operable
, E DE l within 8 minutes. (LER 77-75) 7 89 m,, E, EE CCCE COMpor4ENT CCCE ACT 4 VCLATCN Q lIl Dl lF l 7 89 10 l Il Nl S l Tl Rl Ul lNl l Dl1 l 5 l 0 l g ,
11 12 17 43 44 47 48 .
CAUSE DESCRIPTION 'p ;~
e l The 15 volt power supplies for the API system crowbarred due to a spike of unknown 7 89 6-0 l origin and were reset restoring system operability; 6
f ,
9
- E l
's'TE % POWER oTHER STATUS -Cr5 CVERY e6 COWRY CESCMT:CN l
Q 70
]
9 10
[0 l0 l0 l l 12 13 NA l 44 l Al 45 l
'46 1A 8.
ACTMTV CCATENT -
RELEASEO AMCUNT OF ACTMTV LOCAT:CN CF RELEASE 1
] CFyRELEASE l NA l l NA 7 8 .9 10 11 44 45 , St PERSONNEL EXPOSURES NUMBER TYPE DESC341PTICN Q l0 l0 l0 l 7 89 11 Wl12 13 NA Es PERSONNEL INJUAIES -
NUMBER DESCRPTON E l0l0l0_l l NA 7 89 11 .12 ,
SC OFFSITE CONSECUENCES
,Ql -
NA - -
l 7 89 Bt LOSS OR OAMAGE TO FAC:UTY TYPE CESCRPTON .
1 7 89 bl 10 NA LC PUBUCITY l 17 l NA I
7 89 UC
, ADDITIONAL FACTORS as89
}l See attached Supplementary Information 8 0 02 280 fp 7 89 , to NAME:
W. P. Stewart PHONE: (813) 866-4159
, _q,- l .
cPo one.ssT l _ _ _ _ .
. ~
~ ~ '
SUPPLDfENTARY INFORMATION
~,,..
N. Report No.: 302/77-75 .
4
- 2. Facility: Crystal River Unit #3 *
- 3. Report Date: 28 July 1977
- 4. Occurrence Date: 2 July 1977
- 5. Identification of Occurrence:
The loss of all absolute position indication resulted in a limiting condition for operation in excess of those addressed in the Specifications as defined by Technical Specification 3.0.3.
- 6. Conditions Prior to Occurrence:
Mode 2 startup operation.
- 7. Description of Occurrence: .
At 0435 while performing operability test of the absolute position indication of rod 3 of .:.
group 6, the absolute position indication for all rods was lost. The Electrical Supervisor i was immediately notified and preparations were made to go to hot standby within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, as required by Technical Specifications. The v.ssolute position indication system was restored operable within 8 minutes.
Designation of Apparent Cause:
An apparent , spike from an unknown origin causet a crowbar of the API 15 alt power supplies. The power supplies were reset and th 1 API system restored operable.
- 9. Analysis of Occurrence:
3 There were no safety implications as a result of this occurrence.
- 10. Corrective Action:
No corrective action deemed necessary as normal maintenance restored system operability.
- 11. Failure Data:
i This was not a repetitive occurrence.
- - .-- .. .. - -