View source for 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

{{Adams
| number = ML20212E682
| issue date = 09/23/1986
| 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
| author name = Boyd D, Guldemond W
| author affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION III)
| addressee name = 
| addressee affiliation = 
| docket = 05000331
| license number = 
| contact person = 
| document report number = PNO-III-86-104, NUDOCS 9711040021
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION &amp; AUDIT &amp; I&amp;E CIRCULARS
| page count = 1
}}
{{#Wiki_filter: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 verification _or evaluation, and is basically all that-is- known by. the Region !!!-
y [ Nystaffonthisdate.-
a or public' interest _significancei _
: 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 hours.
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 v ')
SECY, Records.
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                 'OISTRIBUTION:                                      SP: O W P2 d3S N' H. St.       ,
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                  - Conn. Carr 5P~            Regional-Offices
                  -ACRSc                                                                                                                       ~
                  -SECY.                          INP01               MSAC R.                       _     ne:                     (Corp. Office.-R9actorLic.Only)                                     -
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            \'                                                                                    Region III
                         ,                                                                       .Rev. November 1985
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9711040021 6 NO-I       96-104 PDR _ , _
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