ML20127A837
| ML20127A837 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 08/12/1983 |
| From: | Jeng D Office of Nuclear Reactor Regulation |
| To: | Lear G Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19263A633 | List:
|
| References | |
| FOIA-84-455, FOIA-84-A-56 NUDOCS 8308180633 | |
| Download: ML20127A837 (2) | |
Text
__
. p ueg'o,,
- 1 :
UNITED STATES 7
u g
NUCLEAR REGULATORY COMMISSION M >
a WASHINGTON. D. C. 20555 4
,o s
K A\\)G 1 2 1933 MEMORANDUM FOR: George Lear Chief q
J Structural and Geotechnical Engineering Branch Division of Engineering a
h.
FROM:
David C. Jeng, Leader
- 5 Structural Engineering Section A Structural and Geotechnical Engineering Branch k
Division of Engineering
SUBJECT:
WATERFORD 3 BASE MAT CRACK ALLEGATIONS Based on information obtained from the Waterford 3 project manager James Wilson and the enclosed documents, the status of the subject issue is hibh11ghted below:
s
~
~1.
The alleged containment basemat cracking at Waterford 3 was reported s} -
in May 1983. The cracks were identified by the observation of a small amount of water percolating through the top of the mat at several 9
locations. The cracks are not visible to the naked eyes.
)
2.
Engineering studies were conducted by Ebasco, the A/E for the plant, to assess the potential impact of the alleged cracking on the structural j
3
' integrity of the base mat.
3.
NRC inspectors are monitoring the mat leakages and reviewing the results d
of the Ebasco studies. Furthennore, both NRC/I&E and Lousiana Power
& Light have separately initiated independent assessment of the potential
}
1mpact of the mat cracking and leakage upon its structural integrity.
Reports from these independent reviews are scheduled to be issued on s
September 1,1983.
s.
4.
Both Senator J. Bennett Johnston and Representative Gillis long have officially inquired about the allegatjon and requested NRC response on the issue. RIV has prepared a draft response to Rep. G. Long's inquiry on i
behalf of Mr. W. J. Dircks (see enclosure).
i I
l Fo / A 45C l
E /8.10 Casphepm @ W-
.; } * '
I George Lear.
5.
It is our understanding that, presently, RIY and I&E have the lead responsibility on the issue. Pertinent DE technical branches have-not been officially requested to participate in the resolution of
~
' the issue. We (SGEB) are prepared and will be able to offer timely assistance to RIV and I&E-on the matter if and when such assistance is requested.
$w%a c-David Jeng, Lead Structural Engineering Se ion A Structural and Geotechnica Engineering Branch i
Division of Engineering 4_
Enclosure:
As stated
\\
' cc:
R. Vollmer J. Knight J. Wilson P. Kuo F. Rinaldi L. Heller e
L.
l-
~
,,., -. +
,,..w...-.,,.-,,,,--,_,.,.-,.-.-,,,.--,_n,
,._,.,,-n,
.., _.,._. -, _ _.,,,,.. - -...--..-..,._,-,-.-,,.-.- - _ _-,-.