ML20006A334
| ML20006A334 | |
| Person / Time | |
|---|---|
| Issue date: | 01/18/1990 |
| From: | Novak T NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | Sheron B NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| Shared Package | |
| ML20006A335 | List: |
| References | |
| AEOD-E909, NUDOCS 9001260134 | |
| Download: ML20006A334 (3) | |
Text
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'JM r a g4 MEMORANDUM FOR:-
-Brian W. Sheron,-Director 1
Division of Systems Research Office of Nuclear Regulatory Research
-FROM:
Thomas M. Novak, Director Division of Safety Programs-j Office for Analysis and Evaluation of Operational Data
SUBJECT:
OPERATOR ACTIONS DURING OPERATIONAL EVENTS p~
The enclosed study on Operator Actions During Operational Events highlights a significant issue regarding impromptu actions during recovery from an event.
These actions'arise because of various circumstances including: organizational attitudes-about following procedures as guidance instead of-verbatim compliance, lack of procedures, time available for preemptive operational j
actions, incorrect or inadequate procedures, or other event specific H
conditions. As noted during the recent steam generator tube rupture event at McGuire, this process resulted in the "in place" steam generator tube rupture emergency procedures not being implemented as expected.
The recent blowdown event at Braidwood is another example where impromptu operator actions occurred during recovery'from a loss of coolant event because of a lack of emergency i
procedures-covering shutdown events.
Significant resources have been expended on developing emergency proceaures and 1
training to cope with untoward events as a result of the TM1 accident.
- Yet, j
there may be situations where conflicts arise, procedures are_ inadequate, or no procedures exist, such as recovery from events that occur when the plants are shutdown, which require impromptu operator actions. There is no specific i
. guidance governing operator actions under these conditions except the rather
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high level direction provided by 10CFR50.54, Conditions of licenses, 7aragraph j
'(x) and IN 79-20,. "NRC Enforcement Policy - NRC Licensed Individuals,"
September 1979.
1 As. indicated in the enclosed report, there should be more specific direction about.when it is appropriate to block or secure a safety system, about when safety systems should be manually actuated, about what takes priority when faced with conflicting functional demands, or about what approach to take if there are flawed or no procedures covering a situation. This prioritized i
guidance should be developed and incorporated into the operators' training.
I
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believe that written guidance could be on the order of one to two pages prepared in such'a manner so as to permit easy recall.
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' ' Ge'neric' Issue-125.11.10, '" Hierarchy of Impromptu Operator Actions," which addressed this issue was subsumed by Issue Hf4.4, " Guidelines for Upgrading-e Other Procedures".
Current efforts appear to be directed at developing procedures = for-specific situations not presently covered by the E0Ps. However,-
development of prioritized guidance on impromptu actions would be an adjunct.to-
- this effort in the interim when no procedures exist or for those future situations where unanticipated conflicts arise. The onclosed report is for your use and information in resolving the issue of impromptu actions. We strongly support more definitive guidance being developed en expected operator 1 responses under'these ad hoc situations.
Original Dirned by:
ThonnaU,Hv Y.<
Thomas M. Novak, Director Division of Safety Programs, AEOD
Enclosure:
As stated cc: w/ enclosure:
J. Roe, NRR E.'Rossi, NRR W. Regan, NRR 4
D. Hood NRR i
D. Matthews, NRR F. Coffman, RES 1
.- S. Rubin, AECD i
l Distribution:.
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L PDR SIsrael VBenaroya HFalkner j
' ROAB R/F JRosenthal TNovak MTaylor i
Centfal))ile? KBlack CHeltemes BBrady j
DSP"R/F MWilliams CHaughney i
i SEEPRgIOUSCONCURREN DSP: 200
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S MEMORANDUM FOR: Brian W. Sheron, Director Division of Systems Research, RES i
FROM:
Thomas M. Novak, Director Division of Safety Programs, AE0D
SUBJECT:
OPERATOR ACTIONS DURING OPERATIONAL EVENTS The enclosed study on Operator Actions During Operational Events highlights a significant issue regarding ad hoc actions during recovery from an event. These actions arise under various circumstances including:
lack of rocedures, time available for preemptive operational actions, incorrect or i dequate procedures, or other event specific conditions.
As noted during the r ent steam generator tube rupture event at McGuire, this process resulted i 't in place steam generator tube rupture emergency procedures not being lemented as expected.
l-The recent blowdown event at Braidwood is another ex le where impromptu operator actions were employed. Enormous resources Ave been expended on p
developing emergency procedures and training to cop with untoward events as e result of the TMI accident.
Yet, there may be si tions where conflicts arise,-
procedures are inadequate, or no procedures exist, such as recovery from events, that occur.when the plants are shutdown, which re uire impromptu operator action.
addressed this issue was subsumed by Issue HF4., gerator Actions," which Generic Issue 125.11.10 " Hierarchy of Imprompt O Guidelines for Upgrading Other Procedures." The enclosed report is for your use and information in resolving the issue of impromptu actions. We otrongly support more definitive guidance being developed on expected operator responses under these ad hoc situations in the resolution of Issue HF4.4.
T omas M. Novak, Director D vision of Safety Programs, AE0D
Enclosure:
As stated cc w/ enclosure:
J. Roe, NRR E. Rossi, NRR W. Regan, NRR D. Hood, NRR D. Matthews, NRR F. Coffman, RES S. Rubin, AE00 Distribution:
PDR SIsrael VBenaroya HFaulkner ROAB R/F JRosenthal TNovak MTaylor Central File KBlack CHeltemes BBrady DSP R/F MWilliams CHaughney ROAB:DSP:AE0D ROAB:DSP:AE0D R0A. SP:AE00 DSP:AE0D D:DSP:AE0D SIsrael G Plam /#/oA JRos thal VBenaroya TNovak 12/7]/89 12/27/89 12 89 12/ /89 12/ /89
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