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Category:REPORTABLE OCCURRENCE REPORT (SEE ALSO AO
MONTHYEARML20038A9681981-11-16016 November 1981 RO Re Tech Spec Violations Reported on 811029.Procedural Aspects of New & Novel ESA Must Be Reviewed by Radiation Use Committee Prior to Implementation ML19341B5201981-01-26026 January 1981 Ro:On 810120,rods 1 & 4 Dropped to Zero Causing Reactor to Shut Down.Cause Not Determined.Console Returned to Normal. Reactor Returned to Power.Event Will Be Further Investigated ML19309G4041979-12-26026 December 1979 Ro:On 791219,during Routine Operation Involving Use of Pneumatic Sample Transfer Sys,Two Strip Chart Recorders Simultaneously Ceased Inking.High Flux Scram Occurred During Consequent Inkwell Refill.Caused by Operator Error 1981-11-16
[Table view] Category:LER)
MONTHYEARML20038A9681981-11-16016 November 1981 RO Re Tech Spec Violations Reported on 811029.Procedural Aspects of New & Novel ESA Must Be Reviewed by Radiation Use Committee Prior to Implementation ML19341B5201981-01-26026 January 1981 Ro:On 810120,rods 1 & 4 Dropped to Zero Causing Reactor to Shut Down.Cause Not Determined.Console Returned to Normal. Reactor Returned to Power.Event Will Be Further Investigated ML19309G4041979-12-26026 December 1979 Ro:On 791219,during Routine Operation Involving Use of Pneumatic Sample Transfer Sys,Two Strip Chart Recorders Simultaneously Ceased Inking.High Flux Scram Occurred During Consequent Inkwell Refill.Caused by Operator Error 1981-11-16
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20127K2821992-12-31031 December 1992 Final Decommissioning Rept for Boelter Reactor Facility Dismantlement & Final Decommissioning Project ML20046B8661992-12-31031 December 1992 Final Decommissioning Rept for Boelter Reactor Facility Dismantlement & Final Decommissioning Project. ML20128G2171992-11-30030 November 1992 Final Release Survey Rept for Boelter Reactor Facility Dismantlement & Final Decommissioning Project ML20247Q7801989-07-28028 July 1989 Safety Evaluation Re Phase II Decontamination,Dismantlement & Disposition of Component Parts of Reactor.Health Physics Program Provides Adequate Protection to Assure Radiologically Safe Program for Dismantling of Facility ML20155C6331988-06-0909 June 1988 Rept of UCLA Reactor Decommissioning,Guide for Phase II, Final Phase ML20211Q3321986-07-14014 July 1986 Safety Evaluation Supporting Decommissioning Plan Phase I, Per 851029 Application.Addl Info,Including Campus Map, Diagram of Lab & Dismantling Organization Chart Encl ML20138M9051985-10-31031 October 1985 Decommissioning Plan:Phase I:Dismantlement & Radiological Assessment of UCLA Argonaut Reactor Facility ML20127K1791984-12-31031 December 1984 Annual Rept 1984,Nuclear Energy Lab ML20080K5581984-02-13013 February 1984 Ro:During Annual Reactor Calibr,Two Control Blades Exhibited Prolonged Drop Times,One Slightly Exceeding Acceptability Limit.Problem Lies within Core.Steady Viscous Drag Indicated Possibly Due to Lubricant Degradation ML20095L0001983-12-31031 December 1983 Annual Rept 1983,Nuclear Energy Lab ML20072G6861982-12-31031 December 1982 Nuclear Energy Lab Annual Rept,1982 ML20063E8851982-07-0808 July 1982 Ro:On 820630,during Initial Approach to Criticality,Operator Unable to Take Reactor Critical Due to Constant Engagement of Auto Controller.Caused by Failed Diode in Inhibit Surveillance Circuit.Voltage Diode Added Across Relay Coil ML20038A9681981-11-16016 November 1981 RO Re Tech Spec Violations Reported on 811029.Procedural Aspects of New & Novel ESA Must Be Reviewed by Radiation Use Committee Prior to Implementation ML19347E9371981-04-17017 April 1981 Operator Requalification Program ML19341B5201981-01-26026 January 1981 Ro:On 810120,rods 1 & 4 Dropped to Zero Causing Reactor to Shut Down.Cause Not Determined.Console Returned to Normal. Reactor Returned to Power.Event Will Be Further Investigated ML19330C7351980-07-29029 July 1980 Annual Rept-UCLA Nuclear Reactor,Jan-Dec 1979. ML20050A7801980-01-17017 January 1980 Ucla QA Program Submitted Per 10CFR71 Re Univ Intent to Transfer MTR Type Fuel,Irradiated,To Carrier ML19338D3601980-01-0303 January 1980 Ucla Reactor Is Safe Exhibit B.Fifteen of 22 Pages ML19309G4041979-12-26026 December 1979 Ro:On 791219,during Routine Operation Involving Use of Pneumatic Sample Transfer Sys,Two Strip Chart Recorders Simultaneously Ceased Inking.High Flux Scram Occurred During Consequent Inkwell Refill.Caused by Operator Error ML19275B6061979-10-0303 October 1979 Ucla Nuclear Reactor - Is It Safe. ML19343A1731976-12-31031 December 1976 Atmospheric Dispersion of Ar-41 from Ucla Nuclear Reactor. ML20155K4201976-07-12012 July 1976 Evaluation of UCLA Security Plan ML20155K3891976-05-10010 May 1976 Evaluation of UCLA Security Plan 1992-12-31
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- UNIVERSITY OF CALIFORNIA, IOS ANGELES . .
UCIA j ntam n nois insis e sus asctto, mittasios . sss oirce? sss russeisoo ; e sis 14esassas usr4 carz e :
G W E 9 COMMUNITY SAFETY DEPARTMENT OFFICE OF RESEARCH & OCCUPATIONAL SAFETY LOS ANCELES, CALIFORNIA 90094 Q/ ,
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November 16, 1981 '
V* /:h p f {$x; Director U.S. Nuclear Regulatory Commission Washington, D. C. 20555 Cocket 50-142 License R-71
Dear Sir:
Two possible violations of UCLA's Technical Specifications were reported by tele-phone to the USNRC Region V on October 29, 1981. The action constituting the first possible violation was committed on October 23. On October 27, it occurred to us that we might have violated the Technical Specifications, and we subsequently reported the action on October 29. We believe the reporting delay may also be cla'ssified-zt. a violation.
4 The first apparent violation was a failure to insert all control blades prior to re-moval of a sample of large negative reactivity (UCLA Technical Specification VII.B.2).
No physical consequences ensued as a negative shut down margin of 70 to 80 cents re-mained after removal of the sample.
If Technical Specification VII.B.2 was indeed violated then the reporting delay is also a violation under Technical Specification VIII.M.1 A.
The precise nature of the violation is uncertain and depends upon the interpretation of Technical Specification VII.B.2. That specification clearly applies to a critical reactor; but does it also apply to a sub-critical reactor containing a sample of known negative reactivity and known shutdown margin? UCLA requests NRC clarification of th;s question.
UCLA's Radiation Use Committee was convened on November 2,1981 to review the circum-stances of the apparent violations. (A copy of the meeting minutes is available if desired). The following is a management summary of those minutes:
First Violation - Findings
- 1. A new and novel experiment was run on October 23, 1981. The experiment was in-tended to identify a possible sample of positive reactivity.
- 2. The written procedure for the conduct of the experiment assumed that the sample would display a positive reactivity.
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. .- 3. The. Reactor Supervisor reviewed the written procedure and assumed that standard procedures would govern in the case of unforseen developments.
- 4. The written procedure was not submitted to the Radiation Use Committee.
- 5. The Senior Reactor Operator running the reactor followed the procedure as written, but failed to implement the standard procedure when it was found that the sample reactivity was in fact negative.
- 6. The Senior Reactor Operator acted with unnecessary haste, in prosecuting what may have been a deficient procedure. Although he knew his procedure was safe, he did not consider the possibility of a technical violation.
- 7. The principal cause of this apparent violation was a failure to anticipate, and correctly respond to an unexpected development.
First Violation' - Recommendation / Approvals
- 1. The Comittee approved a recommendation that the procedural aspects of new and novel ESA's must be reviewed by the Radiation Use Committee prior to implementation.
Second Violation - Findings and Recommendations.
- 2. All personnel normally expected to notify the NRC were reminded of their res-
.ponsibilities in that regard.
Very truly yours,
&$ b' Walter F. Wegst Director Research & Occupational Safety WW/jr cc: Walnut Creek USNRC Reg. V