ML17179B102
| ML17179B102 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 09/17/1993 |
| From: | Forney W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Delgeorge L COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML17179B103 | List: |
| References | |
| NUDOCS 9309240163 | |
| Download: ML17179B102 (3) | |
Text
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- Docket No. 50-237 Docket No. 50-249 Commonwealth Edison Company ATTN:
Mr. L. 0. DelGeorge Vice President Nuclear Oversight and Regulatory Services Executive Towers West III 1400 Opus Place, Suite 300 Downers Grove, IL 60515
Dear Mr. DelGeorge:
SEP 1 7 1993
SUBJECT:
EXAMINATION REPORT (REQUALIFICATION, REQUALIFICATION RETAKE AND INITIAL LICENSE EXAMINATIONS)
During the weeks of July 26 and August 2, 1993, Mr. D. McNeil and others of this office adminfstered requalification examinations and initial license examinations to employees of your organization who operate and handle fuel at your Dresden Nuclear Power Station.
On August 4, 1993, a retake examination (dynamic simulator portion) was administered to one of your operators who failed the requalification examination administered on September 9, 1992.
At the conclusion of the examinations, preliminary findings were discussed with those members of your staff identified in the enclosed report.
The Dresden Station requalif~cation training program was determined to be effective and has been assigned an overall program rating of satisfactory in accordance with the criteria of NUREG-1021, Revision 7, Operator Licensing Examiner Standards, ES-601.
For the individual with unsatisfactory results, the facility should take corrective action as required by its approved requalification program.
The Dresden Station operator requalification training program shows improvement when compared with previous years.
The requalification examination material submitted has also improved. The examination team was able to use the presented material with only minor modifications.
The station operators appeared to be more familiar with the Dresden Emergency Operating Procedures (DEOPs) than during previous examinations and showed marked improvement in their communication skills.
However, weaknesses were noted in the initial exam process as described in the following three paragraphs.
9309240163 930917 PDR ADOCK 05000237.
V PDR.~
Commonwealth Edison Company 2
SEP 1 7 1993 During the initial license exam, a majority of candidates were judged to be weak or unsatisfactory in the area of radiation release. A significant item of concern in this area is the execution of the Dresden Emergency Operating Procedures (DEOPs) when high radiation conditions exist in the reactor building. Six crews were given a dynamic simulator scenario with high radiation levels in the reactor building caused by a sma 11 steam leak with core damage.
The DEOPs require the operators to emergency depressurize the reactor if radiation levels in the Emergency Core Cooling System (ECCS) rooms exceed 2500 mr/hr.
However, six of the eight control room ECCS room radiation monitors have instrument scales that cannot read 2500 mr/hr. Also, the scenario prevented operators from entering the Reactor Building (due to high radiation levels at the building entrance) and obtaining radiation levels locally.
As a result, three crews took action to emergency depressurize the reactor while three crews did not take action to emergency depressurize the reactor under the same scenario conditions. The conflicting responses to the same scenario conditions indicate either a failure of the DEOPs to provide adequate guidance or an inadequate ranging of specific control room radiation monitors as indicated by the inability of operators to acquire data needed for DEOP implementation.
We request that you respond to this issue within 30 days of the date of this letter.
During the administration of the initial license examination, seven candidates were given a Job Performance Measure (JPM) requiring them to recognize and take the corrective actions for a mispositioned control rod.
All candidates correctly identified the mispositioned control rod.
However, two Reactor Operator candidates initiated corrective actions that were not in accordance with Dresden Station operating procedures. This is of concern because Dresden Station has demonstrated a history of improper response to mispositioned control rods.
Because 2 of 7 candidates responded incorrectly, it appears that corrective actions taken to train operators in responding to mispositioned control rods have not been totally effective.
We also request that you respond to this issue within 30 days of the date of this letter.
During the administration of the initial license examination, multiple occurrences of poor performance by Radiation Protection personnel were noted.
A description of the occurrences can be found in Enclosure 1, Report Details, Section 4.b. Although no written response is necessary for this item, management attention should be directed to this area.
In accordance with 10 CFR 2.790 of the Commission's regulations, a copy of this letter and the enclosures will be placed in the NRC's Public Document Room.
Commonwealth Edison Company 3
SEP 1 7 1993 Should you have any questions concerning this examination, please contact us.
Enclosures:
- 1.
Examination Report No. 50-237/0L-93-01
- 2.
Requalification Program Evaluation Report
- 3.
Examination and Answer Keys (RO) cc w/enclosures.(1 & 2 only)
M. D. Lyster, Site Vice President Gary F. Spedl, Station Manager J. Shields, Regulatory Assurance Supervisor D. Farrar, Nuclear Regulatory Services Manager Sincerely, Origin.al signed by William L. Forney William L. Forney, Acting Director Division of Reactor Safety R. Weidner, Plant Training Manager (w/all 3 encl.)
OC/LFDCB Resident Inspectors-LaSalle, Dresden, Quad Cities Richard Hubbard J. W. Mccaffrey, Chief, Public Utilities Division Robert Newmann, Office of Public Counsel, State of Illinois Center State Liaison Officer Chairman, Illinois Commerce Commission J. B. Martin, RIII H. J. Mil 1 er, RI II T. 0. Martin, RIII J. E. Dyer, NRR M. J. Jordan, RIII C. D. Pederson, RIII S. Stasek, SRI, Davis-Besse J. F. Stang Jr., LPM, NRR G. Buckley, PNL M. Mitche 11 PNL cc w/enclosures:
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