Ro:On 800207,control Rod Withdrawal Inhibit on Intermediate Power Level Period Monitor Set Below Specified Setpoint. Possibly Caused by Inadvertent Movement During Channel Check.Withdrawal Inhibit Adjusted to Proper SetpointML19271A009 |
Person / Time |
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Site: |
05000054 |
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Issue date: |
02/08/1980 |
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From: |
Voth M UNION CARBIDE CORP. |
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To: |
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References |
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NUDOCS 8002140504 |
Download: ML19271A009 (1) |
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Category:REPORTABLE OCCURRENCE REPORT (SEE ALSO AO
MONTHYEARML19323F2881980-05-15015 May 1980 RO 50-54/80-01:during Reactor Startup,Control Rod Found Separated Between End Piece & Poison Section.Cause Unstated. Silver Indium Rods Inspected.Startup Reactivity Check Procedures Being Revised to Prevent Misinterpretation ML19309H4921980-05-0505 May 1980 Ro:On 800503,poison Section of Control Rod Assembly Found Separated from Rod Drive.Failure Did Not Compromise Shutdown Margin.Rod Replaced & Reactor Returned to Power. Remaining Rods Will Be Closely Monitored Until Insp ML19294B1701980-02-18018 February 1980 Ro:On 800207,control Rod Withdrawal Inhibit on Intermediate Power Level Period Recorder Found Set at Less than 30-s Setpoint.Caused by Nut Loosened During 800207 Maint Allowing Setpoint to Be Changed During Channel Check ML19271A0091980-02-0808 February 1980 Ro:On 800207,control Rod Withdrawal Inhibit on Intermediate Power Level Period Monitor Set Below Specified Setpoint. Possibly Caused by Inadvertent Movement During Channel Check.Withdrawal Inhibit Adjusted to Proper Setpoint 1980-05-05
[Table view] Category:LER)
MONTHYEARML19323F2881980-05-15015 May 1980 RO 50-54/80-01:during Reactor Startup,Control Rod Found Separated Between End Piece & Poison Section.Cause Unstated. Silver Indium Rods Inspected.Startup Reactivity Check Procedures Being Revised to Prevent Misinterpretation ML19309H4921980-05-0505 May 1980 Ro:On 800503,poison Section of Control Rod Assembly Found Separated from Rod Drive.Failure Did Not Compromise Shutdown Margin.Rod Replaced & Reactor Returned to Power. Remaining Rods Will Be Closely Monitored Until Insp ML19294B1701980-02-18018 February 1980 Ro:On 800207,control Rod Withdrawal Inhibit on Intermediate Power Level Period Recorder Found Set at Less than 30-s Setpoint.Caused by Nut Loosened During 800207 Maint Allowing Setpoint to Be Changed During Channel Check ML19271A0091980-02-0808 February 1980 Ro:On 800207,control Rod Withdrawal Inhibit on Intermediate Power Level Period Monitor Set Below Specified Setpoint. Possibly Caused by Inadvertent Movement During Channel Check.Withdrawal Inhibit Adjusted to Proper Setpoint 1980-05-05
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20237C5181998-08-19019 August 1998 Safety Evaluation Supporting Order Terminating Facility License R-81 for Cintichem,Inc Research Reactor ML20211C5761997-09-22022 September 1997 Bedrock Dose Assessment Rept. W/One Oversize Drawing ML20149G9201997-06-27027 June 1997 Final Survey Repts for Cintichem Outdoor Areas Inside of Former RCA, Chapters 13 & 14 ML20070S2991990-12-31031 December 1990 Annual Rept for 1990 for Centichem,Inc Nuclear Reactor. W/ ML20055F9141990-07-17017 July 1990 Safety Evaluation Supporting Amend 26 to License R-81 ML20236D2121989-03-14014 March 1989 Safety Evaluation Supporting Amend 25 to License R-81 ML20248K2341988-12-31031 December 1988 Annual Rept for 1988 ML20151W5051988-08-16016 August 1988 Safety Evaluation Supporting Amend 24 to License R-81 ML20153B0341987-12-31031 December 1987 Annual Rept for 1987 for Cintichem,Inc Nuclear Reactor ML20214J1771986-12-31031 December 1986 Annual Operating Rept for 1986 ML20113C6411984-12-31031 December 1984 Annual Rept for 1984 for Union Carbide Nuclear Reactor (Ucnr) ML20087L4251983-12-31031 December 1983 Annual Rept for 1983 ML20072P3641983-03-28028 March 1983 Annual Operating Summary,1982 ML20042C1021982-03-23023 March 1982 Annual Operating Rept,1981. ML19350C7301981-03-31031 March 1981 Annual Operating Rept 1980. ML20003E6431981-03-31031 March 1981 Annual Operating Summary,1980, Page 5 ML19323F7061980-05-31031 May 1980 Revisions to Sar,Submitted in Support of Application for Renewal of License R-81 ML19323F7001980-05-23023 May 1980 Annual Financial Rept 1979 ML19323F2881980-05-15015 May 1980 RO 50-54/80-01:during Reactor Startup,Control Rod Found Separated Between End Piece & Poison Section.Cause Unstated. Silver Indium Rods Inspected.Startup Reactivity Check Procedures Being Revised to Prevent Misinterpretation ML19309H4921980-05-0505 May 1980 Ro:On 800503,poison Section of Control Rod Assembly Found Separated from Rod Drive.Failure Did Not Compromise Shutdown Margin.Rod Replaced & Reactor Returned to Power. Remaining Rods Will Be Closely Monitored Until Insp ML19309C3971980-03-31031 March 1980 Annual Operating Rept 1979, Reporting Facility Mod & Major Maint ML19294B1701980-02-18018 February 1980 Ro:On 800207,control Rod Withdrawal Inhibit on Intermediate Power Level Period Recorder Found Set at Less than 30-s Setpoint.Caused by Nut Loosened During 800207 Maint Allowing Setpoint to Be Changed During Channel Check ML19271A0091980-02-0808 February 1980 Ro:On 800207,control Rod Withdrawal Inhibit on Intermediate Power Level Period Monitor Set Below Specified Setpoint. Possibly Caused by Inadvertent Movement During Channel Check.Withdrawal Inhibit Adjusted to Proper Setpoint 1998-08-19
[Table view] |
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- cly 7400 bein, c on 7 February 1980, Iho control rod w I t heir nwa l i n h 11.i t on the intermediate powor invo] pe r i nr1 mnni t or was (nund Pi e t at 1 <> ri ci than the v orrui red 30 noconr1 not pn i nt purnuant to Technical Speci-ficatlon "l . 7 . 3 . It is believed to have been moved in-advort<*nt1y ourIng a channel check s>er formed approx 5nate-Jy R hourn narlinr. The 10 nascond rnverne and the 3 second r.c r a m n e t poi n t e, remained operable. The inntrument wan corrected immediately. Thiv= in not a m .rt.itive e situation.
Thin t-eJ er opy con f I rma a teiephons notification to Mr. P. It . McCabe of your office at 1415 hourn today. A writtca. r e po r t- wi11 he nubmitted wit.hin 14 dayn purnuant to Tochnical F=poc i fi ca t J on (> . S . 3 . a . ( :1) ( b ) .
Yourn very tr uly, jj o , . s 1. i .! a .
Mity : 1 t.m Mascon II . Vcth Planaoer Nuc3 car o pe r.st.i o n n e
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