ML19296C329
| ML19296C329 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 02/01/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Papay L SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 8002250588 | |
| Download: ML19296C329 (1) | |
Text
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UNITED STATES E ' y,
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,e-SUITE 202, WALNUT CREE K PLAZA WALNUT CR E E K, CALIFORNI A 94596 February 1, 1980 Docket Nos. 50-206, 50-361 50-362 Southern California Edison Company P. O. Box 800 2244 Walnut Grove Avenue Rosemead, California 91770 Attention:
Dr. L. T. Papay, Vice President Advanced Engineering Gentlemen:
The enclosed Circular 80-02 is forwarded to you for information.
If there are any questions related to your understanding of the suggested actions, please contact this office.
Sincerely,
~
s R. H. Engelke" Director Enclosures :
1.
IE Circular No. 80-02 2.
List of IE Circulars Recently Issued cc w/ enclosures:
J. M. Curran, SCE R. Dietch, SCE 8002250 588
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S5I15 flo.: 6830 Accession fb.:
UNITED STATES 7912190657
'4UCLEAR REGULATORY C0!!!11SSION OFFICE OF If;SDECTIC'l AfD ENFORCE *1ENT hD g
WASHINGTON, D.C.
20555 Februarv 1, 1980 IE Circular No. 80-02 f!UCLEAR POWER PLANT STfFF WORK HOURS Description of Circunstances:
Studies indicate that with fatigue, especially because of loss of sleep, an individual's detection of visual signals deteriorates narkedly, the tine it takes for a person to make a decision increases and more errors are nade, and readino rates decrease.
Other s'
'ies show that fatique results in oersonnel ignoring some signals because they develop their own subjective standards as to what is important, and as they becone more fatiaued they ignore more signals.
Inspections of oersonnel perfornance and training since the accident at Three Mile Island, have shown that in certain situations facility oersonnel are either reauired or allowed to remain on duty for extended periods of time.
Also, conolaints have been received from sone licensed nuclear power plant operators concerning the number of continuous hours they have been on duty.
Licensee nanagerent is responsible for providina a sufficient number of trained personnel who are in the proper physical condition to operate and maintain the plant.
Licensee ranagement should review their administrative procedures covering the working hours of nuclear nower plant staff. These procedures should establish a sound policy covering workina hours for plant staff who perforn safety related functions (e.g., senior reactor operators, reactor operators, health physicists, auxiliary operators, I&C technicians, key mainter, nce personnel, etc.)
Subconmittee ANS-3 is currently developing criteria to address the subject of operator work hours.
These guidelines will become a cart of ANSI fl18.7. The NRC is also considering issuing requirements for administrative procedures that would control staff overtine. Until either the ANSI Standard is issued and endorsed by NRC (via a Regulatory Guide) or separate requirements are issued by tRC, it is recommended that the following guidancr. be used. The quidance should be aoplied to all personnel performing a safety related function:
1.
Scheduled work should be linited to the following naxinum work hours:
a.
An individual should not be oermitted to work nore than 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> straight.
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IE Circular No. 89-02 February 1, 1980 Page 2 of 2 b.
There should be at least a 12-hour break between all work ceriods.
c.
An individual should not work nore than 72-hours in any 7-day period.
d.
An individual should not work nore than 14 consecutive days withcut having 2 consecutive days off.
2.
In the event that special circumstances arise that require deviation fron the above, such deviations should be authorized by the Station !1anager with approoriate documentation of the cause.
Plants should be staffed and schedules developed to operate such that exceptions are not reouired.
3.
If an operator is required to work in excess of 12 continuous hours, his duties should be carefully selected.
It is preferable that he not be assioned anv task that affects core reactivity or could possibly endanger the safe operation of the plant.
No written resoonse to this Circular is reauired.
If you desire additional inforration regarding this natter, contact the Director of the aopropriate NRC Regional Office.
L-t.
IE Circular No. 80-02 Enclosure February 1, 1980 RECENTLY ISSUED IE CIRCULARS Circular Subject Date of Issued to No.
Issue 80-01 Service Advice for GE 1/17/80 All licensees of Induction Disc Relays nuclear power reactor operating f..cilities and holders of nuclear power reactor cps 79-25 Shock Arrestor Strut 12/26/79 All licensees and Assembly Interference holders of power reactor cps 79-24 Proper Installation and 11/26/79 All Holders of a Calibration of Core Spray Power Reacter OL or Pipe Break Detection CP Equipment on BWRs.
79-23 Motor Starters and 11/26/79 All Power Reactor and Contactors Failed Operating i:cilities to Operate and Holders of Reactor cps 79-22 Stroke Times for Power 11/16/79 All Power Reactor Operated Relief Valves Operating Facilities and all Utilities having a CP 79-21 Prevention of Unplanned 10/19/79 All holders of Power Releases of Radioactivity Reactor OLs and cps 79-20 Failure of GTE Sylvania 9/24/79 All holders of Power Relay, Type PM, Bulletin Reactor OLs and cps 7305, Catalog SU12-11-AC with a 12V AC Coil 79-19 Loose Locking Devices 9/13/79 All Holders of Power on Ingersoll-Rand Pumps Reactor OLs and cps 79-18 Proper Installation of Target 9/10/79 All Holders of Power Qack Safety-Relief Valves Reactor OLs and cps 79-17 Contact Problem in 58-12 8/14/79 All Power Reactor Switches on General Electric Licensees with a CP Company Metalclad Circuit and/or OL Breakers