ML19296C344
| ML19296C344 | |
| Person / Time | |
|---|---|
| Site: | 05000142 |
| Issue date: | 02/01/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Wegst W CALIFORNIA, UNIV. OF, LOS ANGELES, CA |
| References | |
| NUDOCS 8002250627 | |
| Download: ML19296C344 (1) | |
Text
7~/G f*...,,,%
UNITED STATES
+['y)'.,(
j NUCLEAR REGULATORY COMMISSION j
REGION V 3 J-o, 1 g
1990 N. C ALIFORNI A BOUL EVARD
%, ' b' SUITE 202, WALNUT CRE E K PLAZA WALNUT CREEK, CALIFORNIA 94596 February 1,1980 Docket flo. 50-142 University of California at Los Angeles 405 Hilgard Avenue Los Angeles, California 90024 Attn: Walter F. Wegst, PhD Director, Research & Occupational Safety Department of Conmunity Safety Gentlemen:
The enclosed Circular 80-02 is fonvarded to you for information.
If there are any questions related to your understanding of the suggested actions, please c..itact this office.
Sincerely, u
l 6
}
R. H. Engelken Director
Enclosures:
1.
IE Circular No. 80-02 2.
List of IE Circulars Recently Issued 8002250
SSIMS No.: 6830 Accession No.:
UNITED STATES 7912190657 NUCLEAR REGULATORY COMMISSION
[ F kJ [
7 OFFICE OF INSDECTION AfD ENFORCE'1ENT WASHINGTON, D.C.
20555 g
i February 1, 1980 IE Circular No. 80-02 NUCLEAR POUER PLANT STAFF FORK HOURS Description of Circunstances:
Studies indicate that with fatigue, especially because of loss of sleep, an individual's detection of visual signals deteriorates markedly, the tine it takes for a person to nake a decision increases and more errors are made, and readino rates decrease.
Other studies show that fatique results in personnel igr.oring some signals because they develop their own subjective standards as to what is important, and as they becone more faticued they ignore more signals.
Inspections of personnel perfornance and trainina since the accident at Three Mile Island, have shown that in certain situations facility oersonnel are either recuired or allowed to remain on duty for extended periods of time.
Also, corolaints have been received fron some licensed nuclear power plant operators concerning the number of continuous hours they have been on duty.
Licensee managerent is responsible for providing 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 orocedures covering the working hours of nuclear nower plant staff. These procedures should establish a sound policy covering workino hours for plant staff who cerform safety related functions (e.g., senior reactor operators, reactor onerators, health physicists, auxiliary operators, I&C technicians, key maintenance personnel, etc.)
Subcommittee ANS-3 is currently developing criteria to address the subject of operator work hours. Thesa guidelines vill become a cart of ANSI N18.7. The NRC is also considering issuing requirements for administrative orocedures tnat would control staff overtine. Until either the ANSI Standard is issued and endorsed by NRC (via a Reculatory Guide) or separate requirements are issued by NRC, it is recommended that the following quidance be used. The guidance should be aoplied to all personnel nerforming a safety related function:
1.
Scheduled work should be linited to the following naxinum work hours:
a.
An individual should not be permitted 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.
IE Circular ?!o. 80-02 February 1, 1980 Page 2 of 2 b.
There should be at least a 12-hour break between all work periods, c.
An iadividual should not wort; nore than 72-hours in any 7-day period.
d.
An individual should not work nore than 14 consecutive days without having 2 consecutive days off.
2.
In the event that special circumstarces arise that require deviation from the above, such deviations should be authorized by the Station flanager with appropriate 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 any task that affects core reactivity or could possibly endanger the safe operation of the plant.
No written resoonse to this Circular is required.
If you desire additional infornation regarding this natter, contact the Director of the aopropriate NRC Regional Office.
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 facilities and holders of nuclear power reactor cps 79-25 Shock Arrestor Strut 12/20/79 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 CL or Pipe Break Detection CP Equipment on B'.lRs.
79-23 Motor Starters and 11/26/79 All Power Reactor and Contactors Failed Operating Facilities 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 Rock Safety-Relief Valves Reactor OLs and cps 79-17 Contact Problem in SB-12 8/14/79 All Power Reactor Switches on General Electric Licensees with a CP Company Metalclad Circuit and/or OL Breakers