ML20086C122
| ML20086C122 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 04/20/1976 |
| From: | Schwalje E Public Service Enterprise Group |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086C120 | List: |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8311220578 | |
| Download: ML20086C122 (2) | |
Text
e 4
O
..MM 00Eg
-%)
M[ lou %d I
~
~
PublicService ElectricandGasCompany 80ParkPlace Newark N.J. 07101 Phonc201/622-7000 I
~
?
"l April 20, 1976 i:
Mr. Jamec P.
O'Reilly, Director i
U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement
~[
Region 1 C
631 Park Avenue King of Prussia, Pennsylvania 19406
Dear Mr. O'Reilly:
SUPPLEMENTARY INFORMATION SIGNIFICANT REPORTABLE ITEMS 10CFR50.55(e)
LETTERS OF MARCH 16 AND 31, 1976 NO. 1 UNIT SALEM NUCLEAR GENERATING STATION Reports of March' 16', 1976 "3/4 Pipe Failure - RHR Systems" and March 31, 1976 "CvCS No. 13 Charging Pump Suction Header" were.
submitted in compliance with 10CFR50.55(e).
The following is offered as supplementary information to these'two reports and to provide further assurance of the adequacy of similar piping in other systems.
Operating experience of No. 1 Unit, Salem during the hot-functional test afforded the opportunity to. observe expansions, vibrations and other characteristics of the piping-systems.
Although these systems as installed met the design criteria,.
abnormal vibration during hot functional test was the cause of the two reported subject failures.
As a result of~these occurrences, a review was initiated of similar piping instal-la tions in other safety-r. elated systems.
' This analysis consisted of drawing reviews plus physical-examination oflthe installed piping systems.
This-inves.tigation which took into account the hot functional. test operating.
experience will result in revisions to add 1 additional conser-
.vatism in selected areas above - that needed to meet the original-design criteria.
Pipe replacement, test, inspection and verification controls will-be. equivalent lto 'that of the ' original installation.
I 8311220578 760316 PDR ADOCK 05000272 PDR g
J i
The Enc'rgy Pc'ople p
4.
v
~
pi
._ s.
A
{
' ' h/20/y6*~
Mr.
J.P. O'Reilly
-2*
f-
~"'
l l
. completed by core loading and y,311,
The work is scheduled to be provide the added. assurance to prevent the recurrence of th29
"? D
~
type-of failure.
N s
Very truly yours, t.
,~ -
h'
,r,_
E. N. Schwa 1 e m
J Manager of Quality Assurance Engineering and Construction.
Department 4.
CC:
Director, U.S. NRC m
Bethesda, Md.
\\
a
,,s i
~
r p
.m '
w,:
u g
s.
r s
,m
.\\
'4
- k
"/r,
gw s
a
,s y
r~ j
? ; J-n, 9
N,W e
y 4
n y
17 6
.!y_
- /
_4 5
. L+
n j
e
- h*h
2-
..p.
e 0
9 1
e
', A f ' '
+
y i
y
/,
4
, f,
M'-
a4
%,-,, A -