05000423/LER-1997-012, Forwards Revised Commitments Re Expansion Joint Tie Rod Assemblies,Previously Submitted to NRC in LER 97-012-00

Forwards Revised Commitments Re Expansion Joint Tie Rod Assemblies,Previously Submitted to NRC in LER 97-012-00

ML20210K420
Person / Time
Site:	Millstone
Issue date:	08/12/1997
From:	Hicks G NORTHEAST NUCLEAR ENERGY CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
B16691, NUDOCS 9708190252
Download: ML20210K420 (4)

LER-2097-012, Forwards Revised Commitments Re Expansion Joint Tie Rod Assemblies,Previously Submitted to NRC in LER 97-012-00

Event date:
Report date:
4232097012R00 - NRC Website

text

< . : ;. ~

' _ y_ygg IWpc i erry Rd. (Itoute if,6), Waterfont, Cr 06385 Nuclear Energy mioon, Noa,., r ., si.ii...

Northca t Nudcar EnerFy cmopany .

.., P.O. Iba 128 Waterfoni, Cr 06385 0128

- (860) 447 1791 Fax (860) 444-4277

& Northeast Utilitic Sydem Docket No. 50-423 B16691 Auaust 12.1997 U. S. Nuclear Regulatory Commission L

Attention: Document Control Desk -

L . Washington, DC 20555-l o Millstone Nuclear Power Station, Unit No. 3 Commitment Revision- LER 97-021-00 Exoansion Joint Tie Rod Assemblies The purpose of this letter is to revise the commitments that were previously submitted to the NRC in LER 97-021-00, " Defective Desian of RSS Expansion Joint Tie Rod Assembiv. These commitmentsincluded; 1) The required physical modifications to the eight expansion joints within the RSS will be completed prior to August 13,1997 and no later than prior to entry into mode 4; and the expansion joints provided by Temp Flex division of Johnson Controls will be'identifed and reviewed to verify that they meet design requirements prior to August 13,1997 and -

no later than prior to entry into mode 4,

. At this time, all tied expansion joints at Millstone Unit 3 have been identified.

Modeling and' qualification of these joints is currently being evaluated by a qualified vendor to determine the design adequacy. Physical modifications where needed to

. correct any deficiencies identified will be completed prior to entry into mode 4.

- The revised commitments are provided in Attachment 1.- The remaining commitments in our letter of March 19,1997 are unchanged.

- Should you_ have any questions regarding this matter, please contact Mr. D. A. Smith L at (860) 437-5840.-

NORTHEAST NUCL R ENERGY COMPANY

{N '

G. D. s- V~

-190094 ir or - Milistone Unit No. 3 9708190252 970812 O PDR .ADOCK 05000423 ll khkk <

-S .PDR M.

1

,, ' U.S. Nucl::Cr R::gul~ tory Commission  ;

B16691\ Page 2 '

' cc: H. J. Miller, Region I Administrator A. C. Cerne, Senior Resident inspector, Millstone Unit No. 3 J. W. Andersen, NRC Project Manager, Millstone Unit No. 3 W. D. Travers, Dr., Director, Special Projects

J.

I __

...; Docket Nol 50-423 B16691 4

i E

7-4 i ,

4 d

Attachment 1 5

Millstone Nuclear Power Station, Unit No. 3 NNECO's Commitments

. In Response To -

(LER 97-021-00) i-4-

i f .-.

t v

4 3

i 4

August 1997 i .-

i J

s .

- . , . . , ~_ - - - . , . , , . ,, .c.., _-,y ., . . . , _ _ ,w*

,. ' U.S. Nuclscr Rrgul tory Commission B16691 \ Attachment 1 \ Page 1 Enclosure List of Regulatory Commitments The following table identifies those actions committed to by NNECO in this  ;

document. Please notify the Manager - Nuclear Licensing at the Millstone Nuclear Power Station Unit No. 3 of any questione regarding this document or any associated regulatory commitments.

Number Commitment Due B16263-01 The required physical modifications to the Prior to entry into eight (8) expansion joints within the RSS will mode 4.

be completed.

B16263 Expansion joints provided by Temp Flex Prior to entry into division of Johnson Controls will be identified mode 4, and reviewed to verify that they meet design requirements.

-i i

i

-