View source for PNO-III-85-043, on 850530,control Rod F-12 Did Not Drop to Bottom of Core During Cold full-flow Control Rod Drop Test. on 850531,rod J-4 Stuck W/Primary Sys at 370 Degrees.Vessel Head Will Be Removed to Determine Why Rods Stuck

{{Adams
| number = ML20129H064
| issue date = 05/31/1985
| title = PNO-III-85-043:on 850530,control Rod F-12 Did Not Drop to Bottom of Core During Cold full-flow Control Rod Drop Test. on 850531,rod J-4 Stuck W/Primary Sys at 370 Degrees.Vessel Head Will Be Removed to Determine Why Rods Stuck
| author name = Jackiw I, Shafer W
| author affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION III)
| addressee name = 
| addressee affiliation = 
| docket = 05000266
| license number = 
| contact person = 
| document report number = PNO-III-85-043, PNO-III-85-43, NUDOCS 8506070459
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION &amp; AUDIT &amp; I&amp;E CIRCULARS
| page count = 1
}}
{{#Wiki_filter:PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-III-85-43            Date May 31, 1985 0 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without veri--           Mffy\
fication or evaluation, and is basically all that is known by the staff on this date.
Facility: Wisconsin Electric Power                        Licensee Emergency Classification:
Point Beach Unit 1                                   Notification of an Unusual Event Two Rivers, WI 54241                                 Alert Site Area Emergency Docket No. 50-266                                                General Emergency XX Not Applicable

==Subject:==
TWO STUCK CONTROL RODS On May 30, 1985, while performing a cold full-flow control rod drop test in preparation for r: start (the unit has been shut down since April 5,1985, for refueling), control rod F-12 did not drop to the bottom of the core, but stuck about 60 inches above the bottom.
Tha licensee reviewed the control rod drive test data and sent the findings of their inv stigation to Westinghouse for analysis. The Offices of NRR and IE were notified.
Th3 licensee then went ahead with plans to conduct a hot full-flow drop test on all the other c:ntrol rods. At 3:42 a.m., May 31, 1985, with primary system at 370 degrees, rod J-4, which had successfully dropped in the cold test, dropped only 45 inches, sticking 99 inches from the bottom of the core.
Th unit is once again in cold shutdown. The licensee plans to remove the vessel head to determine why the two control rods are stuck.
Region III (Chicago) is closely follcwing the licensee's course of action.          The SRI is onsits monitoring the licensee's program to resolve the problem.
Th2 State of Wisconsin will be notified.
R;gion III was notified of the first control rod problem at 1:30 p.m. (CDT), May 30,-1985, and the second problem at about 8 a.m. (CDT), May 31, 1985. This information is current as of 9:30 a.m. (CDT), May 31, 1985.
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      .           FTS 88-5697       FTS-565 (506070459850531 PNO-III-95-043 PDR DISTRIBUTION:                                                                                -
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