ML18029A898

Forwards Rev to 850621 Response to Violation Noted in Insp Repts 50-259/85-25,50-260/85-25 & 50-296/85-25.Plant Std Practice Bf 14.25, Clearance Procedure, Rewritten

ML18029A898
Person / Time
Site:	Browns Ferry
Issue date:	09/18/1985
From:	Shell R TENNESSEE VALLEY AUTHORITY
To:	Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8510030068
Download: ML18029A898 (4)

See also: IR 05000259/1985025

Text

p~~IA TENNESSEE VALLEY AUTHORITY CHATTANOOGA.

TENNESSEE 37401 400 Chestnut Street Tower II Ep@September 18, 1985 48 U.S.Nuclear Regulatory

Commission

Region II ATTN: Dr.J.Nelson Grace, Regional Administrator

101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Dear Dr.Grace: Please refer to J.A.Domer's letter to you dated June 21, 1985, which contained our response to OIE Inspection

Report 85-25 for our Drowns Ferry Nuclear Plant.As a result of discussions

with Floyd Cantrell of your staff, we have revised our response to Violation 1.d, which is enclosed.If you have any questions, please get in touch with R.E.Alsup at FTS 858-2725.To the best of my knowledge, I declare the statements

contained herein are complete and true.Very truly yours, TENNESSEE VALLEY AUTHORITY R.H.Shell Nuclear Engineer Enclosure cc: Mr.James Taylor, Director (Enclosure)

Office of Inspection

and Enforcement

U.S.Nuclear Regulatory

Commission

Washington, D.C.20555An Equal Opportunity

Employer

~N-~Le II 0 II

REVISED RESPONSE NRC INSPECTION

REPORT NOS.50-259/85-25, 50-260/85-25, AND 50-296/85-25

DAVID M, VERRELLI'S

LETTER TO H.G.PARRIS DATED MAY 22'985 am Technical Specification 6.3.A.6 requires that detailed written procedures

covering surveillance

and testing requirements

be adhered to.Contrary to the above, Plant Standard Practice BF 14.25, Clearance Procedure, was not followed in that all electrical

power was not isolated from the 2DA low pressure coolant injection (LPCI)motor-generator

set under hold order 85-150A.The motor was removed with voltage (18 volts)still applied to the thermistor

leads.On April 23, 1985, the inspectors

observed that various indicating

lights were still illuminated

although hold order tags were in place.1.dmissi o'a o ed'o a'on TVA disagrees that this example is a violation.

2.eas F th i a The 2DA low pressure coolant injection (LPCI)motor generator (MG)set was-tagged to pull the generator for transport to Louis-Allis

Company for repair.The equipment was tagged in accordance

with Standard Practice 14.25 for this job.The electrical

maintenance

personnel felt the clearance was sufficient

and safe to do work, and the shift engineer issuing the clearance felt it was adequate to safely perform the work.Involved personnel were aware of limitations, conditions, and boundaries

of this clearance.

This meets the intent and purpose of BF 14.25.The 18-volt thermistor

power supply is shared with the 2EN LPCI MG set, and there is no way to provide isolation if the other MG set is to remain operable.The maintenance

personnel did not request.this circuit tagged because they could safely handle the wiring by lifting the leads"hot." This is commonly required and done on systems with common low voltage power supplies.This circuit was subsequently

tagged, but this was for NRC inspectors

concern rather than a safety concern of personnel doing the work.The basis of this violation is related to the wording of BF 14.25.Although we believe the directions

provided in the procedure were adequate, we have reworded BF 14.25 to unambiguously

assure a uniform understanding

on the clearance procedure.

~~1 Ev 1