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 Issue dateTitleTopic
ML20209C9338 July 1999Vols 1 & 2 to SAR for Ma Institute of Technology Nuclear Reactor LabSafe Shutdown
Shutdown Margin
Loop seal
High Radiation Area
Safe Shutdown Earthquake
Hydrostatic
Earthquake
Fire Protection Program
ML20196K03330 June 1999Quality Mgt Program for Generation of MITR-II Medical Therapy Facility Beams for Human Therapy, Reflecting Change to Provision 14
ML20205A65519 March 1999Ro:On 990310,main Ventilation Damper Failed to Close on Receipt of High Radiation Test Signal.Cause Indeterminate. Relays Associated with Main Exhaust Damper/Fans & Main Intake Damper Were Replaced
ML20206P5326 January 1999Ro:On 981229,only One Nuclear Safety Period Scram Channel Was Operable,For Period of Five Minutes.Caused by Placement of Nuclear Safety Sys Channel 1 Input Signal Cable on Wrong Bnc Connector.Placed Channel on Correct Bns Connector
ML20199H23731 December 1998Revised SER for Fission Converter FacilityEmergency Lighting
Earthquake
Fuel cladding
ML20196B75430 June 1998Mit Research Reactor Nuclear Reactor Lab Ma Inst of Technology,Annual Rept to Us NRC for Period 970701-980630. with
ML20217E80723 March 1998Ro:On 980127,containment Integrity No Longer Existed & Key Switch Was Still 'On' for One of Test & Calibr Procedures. Caused by Retrieving Tool Box from Truck Air Lock.Discussed Occurrence W/Personnel & Will Consider TS Rev Re Key Switch
ML20217G2183 October 1997SER for Fission Converter Facility
ML20198P80730 June 1997Annual Operating Rept for Jul 1996 - June 1997
ML20137L5903 April 1997Safety Evaluation Supporting Amend 30 to License R-37
ML20129B32030 June 1996Annual Rept to Us NRC for Period 950701-960630
ML20092K82822 September 1995Corrective Action for RO 50-20/1995-4,re Abnormal Situations Which Occurred on 950711
ML20091K30918 August 1995Ro:On 950809,malfunction of Shim Blade Drive Mechanism Occurred.Determined That Mechanism Experienced Intermittent Slippage When Blade Being Withdrawn.Blade Drive Mechanism Assembly Procedure PM 7.1.1.1 Will Be Reviewed
ML20086T75728 July 1995RO 50-20/1995-4:on 950720,operated W/One Shim Blade Fully Inserted.Caused by Failure of Licensed Operators to Follow Written Procedure for Investigating Mismatch.Failed Proximity Switches Replaced
ML20092K23030 June 1995Mit Research Reactor Annual Rept to NRC for Period Jul 1994 - June 1995
ML20082B85530 March 1995RO 50-20/1995-2:on 950320,operation of Reactor in natural- Circulation Mode W/O Required Two Operable Nuclear Safety Level Channels Set to Scram at or Less than 100 Kw,Mitr TS 3.7
ML20078S22417 February 1995Reportable Occurrence 50-020/95-01:on 950206,voltage & Specific Gravity Measurements of Cell of Emergency Battery Bank Recorded at Less than Specified Weekly SR in TS 4.3.5. C/A Will Modify SR to Monthly
ML20072T30430 June 1994Annual Rept for Mit Research Reactor for 930701-940630High Radiation Area
ML20058Q23717 December 1993RO 50-20/1993-1:on 931207,operation W/Fewer than Required Number of 100 Kw Nuclear Safety Sys Level Channels Identified.Caused by Faulty four-segment Relay in low-range Amplifier of Channel 5.Amplifier Replaced
ML20056G80130 June 1993Mit Research Reactor Nuclear Reactor Lab Mit,Annual Rept to NRC for Period 920701-930630
ML20128P43716 February 1993Safety Evaluation Supporting Amend 27 to License R-37
ML20073H1459 December 1992Study of MITR-II Core Tank Aging for Relicensing ConsiderationHydrostatic
ML20114D92630 June 1992Mit Research Reactor Nuclear Reactor Lab Mit,Annual Rept to NRC for 910701-920630Coatings
ML20094K07212 March 1992RO 50-020/1992-2:on 911030,three Fission Chambers Missing During Annual Inventory of SNM Matl.Search for Missing Chambers Completed on 920311 W/O Locating Chambers.Snm Inventory for 1991 Has Been Amended
ML20090D6662 March 1992RO 50-20/92-1 on:920218,malfunction Occurred in Reactor Analog Controller Due to Improper Performance of Increase in Reactor Power.Caused by Operator Error.Analog Automatic Control Sys Investigated & Temporarily Repaired
ML20082K59122 August 1991RO 50-20/1991-1:on 910813,fission Product Gas Levels Rose from Normal Operating Levels to Max of 15% of Mpc.Caused by Small Blister on One of Element MIT-17 Fuel Plates. Corrective Action Consisted of Removing MIT-17 from Core
ML20082L84530 June 1991Mit Research Reactor Annual Rept to NRC for Jul 1990 to June 1991
ML20058N57410 August 1990QA Program for MITR-II Spent Fuel Shipment
ML20059G43330 June 1990Mit Research Reactor Annual Rept to NRC for Jul 1989 - June 1990
ML20012D96522 March 1990RO 50-20/1990-1:on 900312,incorrect Calculation of Estimated Critical Position (ECP) Attained During Reactor Startup. Caused by Failure to Check Second Portion of ECP Calculation Performed by Individual in Training
ML20012C2779 March 1990SER for BWR Coolant Chemistry Loop to Be Installed & Operated in MitrUltimate heat sink
ML20248C7114 August 1989RO 50-20/1989-2:on 890726,console Operator Received Abnormal Bldg Alarm.Leak Test Revealed Crack on Sys Ref Line Which Senses Atmospheric Pressure Outside Containment.All Polyethylene Tubing in Sys Replaced
ML20247H70430 June 1989Mit Research Reactor Annual Rept for Jul 1988 - June 1989Power change
ML20246P30717 March 1989RO 50-20/1989-1:on 890308,operation W/Fewer than Required Number of Nuclear Safety Channel Level Scrams Due to Lack of High Voltage Power Supply (Hvps) to Channel 5.Reactor Shut Down & Hvps Energized to Supply Channel 5
ML20195K11624 October 1988Suppl to PWR Loop Ser:Use of Large Circulating Pump
ML20154J62229 August 1988Revised Mit Research Reactor Annual Rept to NRC for Jul 1987 - June 1988Power change
ML20153F55930 June 1988Mit Research Reactor Annual Rept to NRC for Jul 1987 - June 1988Power change
ML20154M65026 May 1988RO 50-20/1988-1:on 880511,incipient Fuel Clad Defect Detected.Caused by Small Blister on One Element MIT-12 Fuel Plate.Element MIT-12 Removed from Core
ML20151R73419 April 1988Sser for PWR Coolant Chemistry Loop (Pccl) MITNRL-020Fuel cladding
ML20236S49319 November 1987RO 50-20/1987-2:on 871110,improper Performance of Reactor Reshim Resulted in Excessive Power Rise.Caused by Operator Error.Operator Suspended from All Licensed Duties Pending Further Review of Circumstances & Disciplinary Measures
ML20237K61230 June 1987Mit Research Reactor Annual Rept to NRC for Jul 1986 - June 1987
ML20151R72713 February 1987SER for PWR Coolant Chemistry Loop (Pccl) MITNRL-020Boric Acid
Shutdown Margin
Hydrostatic
ML20213G0606 November 1986RO 50-20/1986-3:on 861027,shim Blade 6 Could Not Operate at full-out Position Due to Mechanical Interference.Caused by Misalignment of Blade Proximity Switch Tube.Switch Tube Reinstalled ProperlyShutdown Margin
ML20214V90017 October 1986Revised RO 50-20/1986-2:on 861008,elevated Levels of Fission Gases Discovered in Primary Containment.Cause Undetermined. Refueling Initiated & Element MIT-19 Removed.All in-core Elements Sipped.No Abnormalities Found
ML20214H95417 October 1986RO 50-020/86-02:on 861008,elevated Levels of Fission Gases in Primary Containment Observed.Cause Unknown.Element MIT-19 Removed from Core & All in-core Elements Sipped
ML20148B30130 June 1986Mit Research Reactor Annual Rept to NRC for Period Jul 1985 - June 1986
ML20154S45928 February 1986RO 50-20/1986-1:on 860219,fission Product Gas Levels Rose from Normal Operating Levels.Caused by Blister on Surface of Outer Fuel Plate of Element MIT-11.Element MIT-11 Removed from Core
ML20214R38131 January 1986Rept of Educational & Research Activities for Academic/ FY84-85 W/Selected Data from Previous YrsFinite Element Analysis
Fuel cladding
ML20137G36623 July 1985RO 50-20/1985-2:on 850715,defect in Fuel Element Cladding Observed.Caused by High Rate of Outgassing from Fuel Element MIT-32.Defective Element Removed
ML20133H40830 June 1985Mit Research Reactor Annual Rept to Us NRC for Jul 1984 - June 1985
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