NUREG-1154, Addresses Prioritization of One Subtask Re Schedule for Resolving Generic Issue 125.I.1 Re Availability of Shift Technical Advisor,Per TMI Item I.A.1.1

Addresses Prioritization of One Subtask Re Schedule for Resolving Generic Issue 125.I.1 Re Availability of Shift Technical Advisor,Per TMI Item I.A.1.1

ML20235H483
Person / Time
Site:	Davis Besse
Issue date:	07/02/1987
From:	Beckjord E NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:	Arlotto G, Ross D, Sheron B NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
References
REF-GTECI-125, REF-GTECI-NI, RTR-NUREG-0933, RTR-NUREG-1154, RTR-NUREG-933, TASK-1.A.1.1, TASK-125, TASK-OR, TASK-TM NUDOCS 8707150157
Download: ML20235H483 (5)

Text

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,( p nua j,k UNITED STATES y , i p, NUCLEAR REGULATORY COMMISSION -

rn '1 y WASHINGTON, D, C. 20555 k ..... # JUL 2 ' 1987 MEMORANDUM FOR: Guy A. Arlotto, Director, RES/DE Denwood F. Ross, Acting Director, RES/DRAA Brian W. Sheron, Director, RES/DRPS Bill M. Morris,' Director, RES/DRA  :

FROM: Eric S. Beckjord, Director Office of Nuclear Regulatory Research

SUBJECT:

SCHEDULE FOR RESOLVING GENERIC ISSUE NO. 125.I.1, I

" AVAILABILITY OF THE SHIFT TECHNICAL ADVISOR" The findings of the Davis-Besse Incident Investigation Team as reported in  !

NUREG-1154, " Loss of Main and Auxiliary Feedwater Event at Davis-Besse Plant-on June 9, 1985," were reviewed by the staff to identify potential generic issues and make recommendations regarding the need for staff actions.

Twenty-nine separate subtasks were identified as long-term actions for

-prioritization. This memorandum addresses the prioritization of one of these-subtasks: Issue 125.1.1, " Availability of the Shift Technical Advisor."

The prioritization of this issue shows that the safety concern has been '

addressed, or is being addressed by licensees in response to TMI Action Plan Item I.A.1.1, " Shift Technical Advisor." Therefore, Issue 125.I.1 will be DROPPED from further consideration.

The enclosed prioritization evaluation will be incorporated into NUREG-0933, "A Prioritization of Generic Safety Issues," and is being sent to the regions, other offices, the ACRS, and the PDR by copy of. this memorandum and its enclosure to-allow others the opportunity to commert on the evaluation. All comments should be sent to the Advanced Reactors and Generic Issues Branch, l

DRA, RES. Should you have any questions pertaining to the contents of this memorandum, please contact Ronald Emrit (X-24576).

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& >' YVh EricS.Beckjord[ Director Office of NucleaNRegulatory Research

Enclosure:

Prioritization Evaluation cc: see next page 8707150157 870702 6 ,

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r ENCLOSURE PRIORITIZATION EVALUATION Issue 125.I.1: Availability of The Shift Technical Advisor L

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ITEM 125.I.1: AVAILABILITY OF THE SHIFT TECHNICAL ADVISOR DESCRIPTION Historical Background

, This issue is one of a list of long-term generic issues which arose during the investigation of the loss of all feedwater event which took place at the 94o Davis-Besse plant on June 9, 1985. During the event, neither the shift ,

supervisor nor any of the other licensed operators requested the assistance of the shift technical advisor (STA). One reason for not doing so was the fact ,

that the STA was not in the control room or immediately available when the event occurred, but rather was on an on-call status. (Note: he is allowed i 10 minutes to reach the control room after being called.) Moreover, the event occurred so rapidly that it was essentially over when he did arrive.

STAS were first required as part of the TMI Action Plan (see Issue I.A.1.1,

" Shift Technical Advisor"). The purpose of the STA was to provide readily available technical support to the plant operators. The STA's expertise was intended to aid in the mitigation of those transient and accidents which 1 involve complex thermal-hydraulic behavior in the primary and secondary l a

coolant systems. In summary, having the STA available was a post-TMI improve-ment to provide the shift supervisor with additional technical expertise, but his potential886assistance and guidance was not available nor required during this event.

Safety Significance  !

The safety question posed by this issue is whether the STA should be in the control room, or immediately available, to support the shift supervisor rather than being on an on-call status.

l CONCLUSION One year after the Davis-Besse incident, the staff conducted a survey to ful-fill a Staff Requirements Memorandum to provide the Commissioners with the implementation results of the Commission Policy Statement on engineering I . _ _ _ _ __ _j

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l expertise on shift and reporte'd their findings in SECY 86-231. This survey found that there were only three plants which did not have on-shift STAS.

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On-shif t STAS means that there is a ST/i, or a STA qualified 'SRO, in or near the control room on a shift basis during operations. The STA shift may or  !

t may not correspond to the'same shift times and length as the licensed operators' I shift. It further means that the STA does not' work on an extended assignment period, e.g., 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, during which time the STA is provided quarters _to rest during a portion of his extended duty and is available on an on-call basis.

Based on the staff's findings, 1o23 STAS are in the control room or immediately available at the majority of operating plants. For the three plants identified with a deficiency, licensee action is being reviewed by '.he staff on a plant-specific basis. Thus, this item should be DROPPED as a generic iss,ue.

l REFERENCES 940. Memorandum for T. Speis from H. Thompson, " Longer-Term Generic Actions as a Result of the Davis-Besse Event of June 9, 1985," November 6, 1985.

886. NUREG-1154, " Loss of Main and Auxiliary Feedwater Event at the Davis-Besse Plant on June 9, 1985," U. S. Nuclear Regulatory Commission, July 1985. I 1023. SECY-86-231, " Survey on Engineering Expertise on Shift," August 6, 1986.

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i JUL 2 1997

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cc: T. Murley, NRR k J. Zerbe, DEDROGR l H. Thompson, NMSS l E. Jordan, AE00 W. Russell, Reg, I l l

J. N. Grace, Reg. II J. G. Keppler, Reg III R. D. Martin, Reg. IV J. B. Martin, Reg. y ACRS lPDR [ '

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