ML19296C326
| ML19296C326 | |
| Person / Time | |
|---|---|
| Site: | Humboldt Bay, Diablo Canyon |
| Issue date: | 02/01/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Crane P PACIFIC GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8002250585 | |
| Download: ML19296C326 (1) | |
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UNITED STATES E 'y,y.,(
',g NUCLEAR REGULATORY COMMISSION p
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WALNUT CREE K, CALIFORNI A 94596 February 1,1980 Docket Nos. 50-133, 50-275 50-323 Pacific Gas and Electric Company 77 Beale Street San Francisco, California 94106 Attention: Mr. Philio A. Crane, Jr.
Assistant General Counsel Gentlemen:
The enclosed Circular 80-02 is forwarded to you for infomation.
If there are any questions related to your understanding of the suggested actions, please contact this office.
Sincerely, d. $.
R. H. Engelken Director Enclosures :
1.
IE Circular No. 80-02 2.
List of IE Circulars Recently Issued cc w/ enclosures:
W. Barr, PG&E W. Raymond, PG&E R. Ramsay, PG&E, Diablo Canyon E. Weeks, PG&E, Humboldt Bay E. B. Langley, PG&E
!!002250 SP S
SSI!!S No.: 6830 Accession fio. :
UilITED STATES 7912190657 NUCLEAR REGULATORY CO'"1[SSION OFFICE OF INSDECTIC'l A!O ENFORCE"ENT WASHINGTON, D.C.
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February 1, 1980 l
IE Circular No. 80-02 f;UCLEAR POWER PLANT STAFF WORK HOURS Descriotion of Circunstances:
Studies indicate that with fatigue, especially because of loss of sleep, an individual's detection of visual signals deteriorates markedly, the tire it takes for 3 person to make a decision increases and more errors are made, and readino rates decrease.
Other studie. show that fatique results in personnel ignoring some signals because they develop their own subjective standards as to what is important, and as they becone Fore fatiqued they ignore nore signals.
Inspections of cersonnel performance and trainino since the accident at Three
'111e Island, have shown that in certain situations facility nersonnel are either reouired 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 canagerent is responsible for providing a sufficient number of trained personnel who are in the proper physical condition to coerate and maintain the plant.
Licensee ranagement should review their adninistrative crocedures covering the working hours of nuclear nower plant staff. These crocedures should establish a sound policy covering workino hours for plant staff who nerforn safety related functions (e.g., senior reactor operators, reactor operators, 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. These guidelines will becone a cart of ANSI N18.7.
The NRC is also considering issuing requirenents for adninistrative procedures that would control staff overtine.
Until either the ANSI Standard is issued and endorsed by NRC (via a Reculatory Guide) or separate requirenents are issued by NRC, it is recomnended that the following guidance 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 oernitted 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 No. 89-02 February 1, 1980 Paae 2 of 2 b.
There should be at least a 12-hour break between all work ceriods, c.
In individual should not work 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 circunstances arise that require deviation from the above, such deviations should be authorized by the Station Manager 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 reqarding 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 4'
79-25 Stock 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 BWRs.
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 Unplanr.ed 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 Problea in 58-12 8/14/79 All Power Reactor Switches on General Electric Licensees with a CP Company Metalclad Circuit and/or OL Breakers