PNO-III-86-104, on 860923,unit Shutdown at 4:08 Am,To Investigate Cause of High Bearing Temp on One of Recirculation Pumps.Vendor Insp Determined That Some Cells, Which Supply Control Power to Hpic Sys Valves Be Degraded: Difference between revisions

From kanterella
Jump to navigation Jump to search
VisualWikitext
StriderTol Bot insert
 
StriderTol Bot change
 
Line 14: Line 14:
| page count = 1
| page count = 1
}}
}}
{{#Wiki_filter:e     p;
{{#Wiki_filter:e p;
            - PRELIMINARY NOTIFICATION OF EVENT-OR UNUSUAL OCCURRENCEePNO-!!!-86404 Date'Septemb6 23,1
- PRELIMINARY NOTIFICATION OF EVENT-OR UNUSUAL OCCURRENCEePNO-!!!-86404 Date'Septemb6 23,1
* This preliminary notification constitutes EARLY notice of events of-POSSIBLE safety The information is as initially received without verification _or evaluation, and is basically all that-is- known by. the Region !!!-
* This preliminary notification constitutes EARLY notice of events of-POSSIBLE safety The information is as initially received without y [ N or public' interest _significancei _
y [ Nystaffonthisdate.-
verification _or evaluation, and is basically all that-is-known by. the Region !!!-
a or public' interest _significancei _
ystaffonthisdate.-
a
: Facility:; Iowa Electric Light:& Power Co.H Licensee Emergency Classification:-
: Facility:; Iowa Electric Light:& Power Co.H Licensee Emergency Classification:-
Duane Arnold Energy Center.                 Notification of.an Unusual Event
Duane Arnold Energy Center.
                              =Palo,-I C 52324                               Alert Site Area Emergency Docket No. 50-331-                         General Emergency T Not Applicable
Notification of.an Unusual Event
=Palo,-I C 52324 Alert Site Area Emergency Docket No. 50-331-General Emergency T Not Applicable


==Subject:==
==Subject:==
-SHUTDOWNFORRECIRCl4ATIONPUMPBEARINGPROBLEM-         ,
-SHUTDOWNFORRECIRCl4ATIONPUMPBEARINGPROBLEM-Theunitwasshutdownat4:08a.m._(CDT), September 23, 1986, to investigate the cause of high bearing temperatures on one of the recirculation pumps. During the shutdown, other maintenance will be performed including replacement of a recirculation valve in the High Pressure Coolant Injection-(HPCI) System and the evaluation and possible replacement of -
Theunitwasshutdownat4:08a.m._(CDT), September 23, 1986, to investigate the cause of high bearing temperatures on one of the recirculation pumps. During the shutdown, other maintenance will be performed including replacement of a recirculation valve in the High
        .      Pressure Coolant Injection-(HPCI) System and the evaluation and possible replacement of -
12 cells in the 250-volt battery bank. A vendor inspection determined some cells, which supply control power to HPIC System valves, to be degraded and the-HPCI system was
12 cells in the 250-volt battery bank. A vendor inspection determined some cells, which supply control power to HPIC System valves, to be degraded and the-HPCI system was
              ' declared-inoperable. Other Emergency Core Cooling Systems were operable, and the HPCI-
' declared-inoperable. Other Emergency Core Cooling Systems were operable, and the HPCI-
: problem therefore did not require shutdown.                                                                                       -
: problem therefore did not require shutdown.
The outage is expected to last longer than 48 hours.
The outage is expected to last longer than 48 hours.
The State of Iowa will-be notified.
The State of Iowa will-be notified.
Region !!!-(Chicago) was informed that the' unit was shutting down at 4 p.m. (CDT),
Region !!!-(Chicago) was informed that the' unit was shutting down at 4 p.m. (CDT),
September 22, 1986, and additional information was provided by the Resident' Inspector._ This               .
September 22, 1986, and additional information was provided by the Resident' Inspector._ This information is current as of 11 a.m.,_ September 23, 1986.
  '>              information is current as of 11 a.m.,_ September 23, 1986.
'>k CONTACT:
k CONTACT:     D. C. Boyd                         W. G. Guldemond-FTS 388-5546                       FTS 388-5574 C/R Distribution:                 Chm, Cmrs,
D. C. Boyd W. G. Guldemond-FTS 388-5546 FTS 388-5574 C/R Distribution:
                                                                          ..        S,GC,CA,ACRS. Historian, yy v ')
Chm, Cmrs, S,GC,CA,ACRS. Historian, yy SECY, Records.
SECY, Records.
v ')
C
SP: O W P2 d3S N' C
                'OISTRIBUTION:                                      SP: O W P2 d3S N' H. St.       ,
'OISTRIBUTION:
EDO     _NRR     E/W "       Willste     Mail: ADM:DMB Chairman Zech                PAL                IE .      NMSS u                             DOT:Trans only Conn. Roberts               ELD               OIA         RES 30 Comm. Asselstine                               AE00 Conni. Bernthal
H. St.
                  - Conn. Carr 5P~           Regional-Offices
EDO
                  -ACRSc                                                                                                                       ~
_NRR E/W "
                  -SECY.                         INP01               MSAC R.                       _    ne:                     (Corp. Office.-R9actorLic.Only)                                     -
Willste Mail: ADM:DMB NMSS u DOT:Trans only Chairman Zech PAL IE.
      ,9                                                                                                                                 '
30 Conn. Roberts ELD OIA RES Comm. Asselstine AE00 Conni. Bernthal
            \'                                                                                   Region III
- Conn. Carr 5P~
                        ,                                                                      .Rev. November 1985
Regional-Offices
                    ~
-ACRSc
(M d_2 D                                                                                                   -
~
9711040021 6 NO-I       96-104 PDR _ , _
-SECY.
i_
INP01 MSAC R.
                                                                        =
ne:
                                                                                                    . _ _ - _ _ - _ _              _ _ _ _          m}}
(Corp. Office.-R9actorLic.Only)
,9
\\'
Region III
.Rev. November 1985 (M d_2 D
~
9711040021 6 i_
NO-I 96-104 PDR _, _
=
m
_ _ _ _}}


{{PNO-Nav|region=III}}
{{PNO-Nav|region=III}}

Latest revision as of 07:25, 4 December 2024

PNO-III-86-104:on 860923,unit Shutdown at 4:08 Am,To Investigate Cause of High Bearing Temp on One of Recirculation Pumps.Vendor Insp Determined That Some Cells, Which Supply Control Power to Hpic Sys Valves Be Degraded
ML20212E682
Person / Time
Site: Duane Arnold 
Issue date: 09/23/1986
From: Boyd D, Guldemond W
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-86-104, NUDOCS 9711040021
Download: ML20212E682 (1)
v • d • e


e p;

- PRELIMINARY NOTIFICATION OF EVENT-OR UNUSUAL OCCURRENCEePNO-!!!-86404 Date'Septemb6 23,1

  • This preliminary notification constitutes EARLY notice of events of-POSSIBLE safety The information is as initially received without y [ N or public' interest _significancei _

verification _or evaluation, and is basically all that-is-known by. the Region !!!-

ystaffonthisdate.-

a

Facility:; Iowa Electric Light:& Power Co.H Licensee Emergency Classification:-

Duane Arnold Energy Center.

Notification of.an Unusual Event

=Palo,-I C 52324 Alert Site Area Emergency Docket No. 50-331-General Emergency T Not Applicable

Subject:

-SHUTDOWNFORRECIRCl4ATIONPUMPBEARINGPROBLEM-Theunitwasshutdownat4:08a.m._(CDT), September 23, 1986, to investigate the cause of high bearing temperatures on one of the recirculation pumps. During the shutdown, other maintenance will be performed including replacement of a recirculation valve in the High Pressure Coolant Injection-(HPCI) System and the evaluation and possible replacement of -

12 cells in the 250-volt battery bank. A vendor inspection determined some cells, which supply control power to HPIC System valves, to be degraded and the-HPCI system was

' declared-inoperable. Other Emergency Core Cooling Systems were operable, and the HPCI-

problem therefore did not require shutdown.

The outage is expected to last longer than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.

The State of Iowa will-be notified.

Region !!!-(Chicago) was informed that the' unit was shutting down at 4 p.m. (CDT),

September 22, 1986, and additional information was provided by the Resident' Inspector._ This information is current as of 11 a.m.,_ September 23, 1986.

'>k CONTACT:

D. C. Boyd W. G. Guldemond-FTS 388-5546 FTS 388-5574 C/R Distribution:

Chm, Cmrs, S,GC,CA,ACRS. Historian, yy SECY, Records.

v ')

SP: O W P2 d3S N' C

'OISTRIBUTION:

H. St.

EDO

_NRR E/W "

Willste Mail: ADM:DMB NMSS u DOT:Trans only Chairman Zech PAL IE.

30 Conn. Roberts ELD OIA RES Comm. Asselstine AE00 Conni. Bernthal

- Conn. Carr 5P~

Regional-Offices

-ACRSc

~

-SECY.

INP01 MSAC R.

ne:

(Corp. Office.-R9actorLic.Only)

,9

\\'

Region III

.Rev. November 1985 (M d_2 D

~

9711040021 6 i_

NO-I 96-104 PDR _, _

=

m

_ _ _ _

Retrieved from "https://kanterella.com/w/index.php?title=PNO-III-86-104,_on_860923,unit_Shutdown_at_4:08_Am,To_Investigate_Cause_of_High_Bearing_Temp_on_One_of_Recirculation_Pumps.Vendor_Insp_Determined_That_Some_Cells,_Which_Supply_Control_Power_to_Hpic_Sys_Valves_Be_Degraded&oldid=3999978"