ML20011B230
| ML20011B230 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 12/04/1981 |
| From: | Sargent C COMMONWEALTH EDISON CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| 2980N, NUDOCS 8112080128 | |
| Download: ML20011B230 (1) | |
Text
f ~'
Commonwealth Edison
/
Ona First N'.1tiond Pl;za, Chicago, Ilhnois
(
) Address Reply to: Post Othee Box 767 x,,/ Chicago, lihnois 60690 Decembe r 4, 1981 d
Q[fv(((r f/P
/.
Mr. A. Schwencer, Chief
'c gEC7 f((
s )
Licensing Branch #2 J
Licensing Department IO8 U.S. Nuclear Regulatory Commission I-
'NIsl@ roe /%
Washington, D.C.
20555 r
?
g
//
/
Subject:
LaSalle County Station Unit 1 N
Jet Pump Hold-Down Beam Replacems
//Z %h NRC Docket No. 50-373 Dea r Mr. Schwencer:
The purpose of this letter is to formally document our commitments regarding jet pump hold-down beam replacement made to Mr. A. Bournia during discussions of this subject.
The revised heat treatment jet pump hold-down beams recently supplied by the vendor will be installed in LaSalle County Station Unit 1 prior to fuel load.
The actual replacement is already in progress.
This commitment was made with the understanding that the requirement to perform a visual and ultrasonic inspection during each refueling outage until the original hold-down beams were replaced would not be included in the final facility operating license.
The decision to replace the jet pump hold-down beams is based on the expected increase in service lif e resulting from the high temperature annealing and hot working procerses along with the decreased pre-stress loading of the beam.
The vendor's preliminary data to support the longer service life, which was discussed with the NRR reviewers, is being augmented with test results which are expected in early 1982.
If there are any questions in this regard, please contact this office.
Ve ry truly yours, Cb C. E. Sa rgent Nuclear Licensing Administrator cc:
NRC Resident Inspector - LSCS o\\
Im 9
Q 2[ h o!oo 2980N A