ML18024B028

Responds to NRC 790807 Ltr Re Violations Noted in IE Insp Repts 50-259/79-14,50-260/79-14 & 50-296/79-14.Corrective Actions:Training Initiated for All Operating Groups & Valves Locked After Being Found in Unlocked Condition

ML18024B028
Person / Time
Site:	Browns Ferry
Issue date:	08/29/1979
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024B027	List: IR 05000259/1979014 ML18024B028
References
NUDOCS 7909280522
Download: ML18024B028 (6)

See also: IR 05000259/1979014

Text

TENNESSEE VALLEY AUTHORITY CHATTANOOGA.

TENNESSEE 8 f401 400 Chestnut Street Tower II August 29, 1979 Mr.James P.O'Reilly, Director Office of Inspection

and Enforcement

U.S.Nuclear Regulatory

Commission

Region II-Suite 3100 101 Marietta Street Atlanta, Georgia 30303 Dear Mr.O'Reilly:~~Enclosed is our response to R.C.Lewis'ugust

7, 1979, letter, RII:HDJ 50-259/79-14, 50-260/79-14, and 50-296/79-14, which requested a supplementary

response to TVA's July 30, 1979, letter concerning

the same subject.We have reviewed the enclosed supplementary.response and find no proprietary

information

in it.If we can provide additional

information, please get in touch with us.Very truly yours, TENNESSEE VALLEY AUTHORITY L.M.Mills, Manager Nuclear Regulation

and Safety Enclosure<909280 OPS An Equal Opportunity

Employer

't

Corrective

Ste s Taken to Avoid Further Noncom liance These actions taken as described above will avoid further noncompliance.

Date Full Com liance Achieved Ualves were verified to be in proper position on June 24, 1979.All core Cooling Instructions

will be revised and approved for second-person

verification

of valve checklists

by November 1, 1979.Group Supplemental

Training will be completed by September 14, 1979.

ENCLOSURE SUPPLEMENTAL

RESPONSE TO NRC-OIE LETTER FROM R.C.LEWIS TO H'i'.-G.PARRIS DATED AUGUST 7, 1979, (REFERENCE

RII:BXM 50-259/79-14$

50-260/79-14, AND 50-296/79-14)

Infraction

As required by Technical Specification 6.3.a.l, detailed written procedures, including applicable

checkoff lists covering normal operation and components

involving nuclear safety of the facility shall be prepared, approved, and adhered to.Operation Instruction

74',"RHR Systems", drawing No.47W811-1,"Flow Diagram RHR System", and drawing No.47W859-1,"Flow Diagram, Emergency Equipment Cooling Water" require certain valves lined up for LPCI mode during normal operation are locked open.Contrary to the above, two outlet valves (HCV 74-33 and HCV 74-44)at the discharge side of RHR Heat Exchangers

3B and 3D were not locked during the normal operation on May 24, 1979.Other ESF valves not locked during the operation were EECW RHR Pump Seal Heat Exchanger Valves Nos.561, 572, and 614.Su lemental Res onse Corrective

Ste s Taken and Results Achieved The item.of noncompliance

is being emphasized

in Group Supplementary

Training for a13.operating groups.With reference to the outlet valves on the RHR system, these valves were locked immediately

after discovery of being in the unlocked condition;

and similar valves on the other units were checked and verified to be correctly locked.The valve checklist in Operation'Instructions

is being revised to include second-party

verification

for the valves.This includes not only valves on the RHR, but all emergency core cooling systems.This will prevent recurrence

of this type of item of noncompliance.