ML19317F481

RO 270/76-05:on 760520,auxiliary Hoist Used W/O Approved Procedure.Caused by Personnel Error.Procedures Revised & Concerned Personnel Required to Review Tech Specs

ML19317F481
Person / Time
Site:	Oconee
Issue date:	06/02/1976
From:	DUKE POWER CO.
To:
Shared Package
ML19317F476	List: ML19317F475 ML19317F481
References
RO-270-76-05, RO-270-76-5, NUDOCS 8001140712
Download: ML19317F481 (2)

Text

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O DUKE POWER COMPANY OCONEE UNIT 2 Report No.: R0-270/76-5 Report Date: June 2, 1976 Occurrence Date: May 20, 1976 Fac ility,1 Oconee Unit 2. Seneca, South Carolina Identification of Occurrence:_ Operation of auxiliary hoist without an approved procedure Conditions Prior to Occurrence: Unit in refueling shutdown Description of Occurrence:

On Fby 20,1976, while Oconce Unit 2 was in refueling shutdown,the thereactor auxiliary hoist was used to lift special tools utilized to cut vessel surveillance specimen holder tubes on the core support assembly in preparation for their removal. An approved procedure was not used for operation of the auxiliary hoist, contrary to the requirements of Oconee Technical Specification 3.12.3. This specification requires that when the reactor vessel head is removed and irradiated fuel is in the Reactor Building, the auxiliary hoist shall be operated only in accordance with approved procedures.

g arent Cause of Occurrence:

This occurrence resulted from the incorrect assumption by concerned personnel that the procedure for operation of the polar crane was also applicabic to operation of the auxiliary hoist. Although similar pre-cautions are to be taken when operating either the polar crane or the auxiliary hoist, the then existing procedure for operation of a crane over the fuel transfer canal specified use of the polar crane only.

Analysis of Occurrence:

Although an approved procedure was not followed, the auxiliary hoist was operated in a safe manner. The work performed in this instance could have been completed without the auxiliary hoist, but use of the hoist assured a safer work practice. It is concluded, therefore, that this occurrer e did not af fect the health and safety of the public.

Corrective Action:

The procedure for operation of crancs over the fuel transfer canal has been revised to include operation of the auxiliary hoist. Additionally, all

! maintenance personnel directly involved in supervising work in the Reactor Building have been required to review Oconee Technical Specification 3.12 8001240 7/ 2

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. referring to the operation of cranes in the Reactor Building. Also, signs have been placed in conspicuous places reminding all crane operators that a procedure is required to operate cranes over the fuel transfer canal,

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