ML19339A389
| ML19339A389 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 06/19/1978 |
| From: | Heider L YANKEE ATOMIC ELECTRIC CO. |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| TASK-08-04, TASK-RR WYR-78-54, NUDOCS 8011030731 | |
| Download: ML19339A389 (2) | |
Text
__
_ ~,
rS. F
- 9. E.I
-Q~_ ' t '
i v.
I.
i Tct: phone 617 366-90H em Tv1 710=390 0739 YANKEE ATOMIC El.ECTRIC COMPANY ura 78-54 4
M, 20 Turnpike Road Westborough, Massachusetts 01581
.YAN KEE
~~
June 19, 1978 79, United States Nuclear Regulatory Commission Washington, D.C. 20555 in
~~
Attention: Victor Stello, Director Division of Operating Reactors
- 1, Li
-~
u,ib
-. I :
ES '
Reference:
License No. DPR-3 (Docket No. 50-291.
r '
h;
..-1 H
=. -
?.
-s
Dear Sir:
R G
to
Subject:
Containmer Electrical Penetration End Seals at Yankee Rowe During recent conversations with members of your staf f, Yankee has been made aware of potential problems with the end seals for containment electrical penetrations containing mineral insulated cables at Connecticut Yankee. Though we do not believe that the Connecticut Yankee tests are representative of conditions at Yankee Rowe, Yankee has decided to modify the af fected safety related end seals at Yankee Rowe. The proposed modification would incorporate the environmentally qualified design which has been recently installed at the Connecticut Yankee facility and qualified at the Franklin Laboratories.
Yankee is currently proposing to commence this modification following a plant shutdown on June 24, 1978.
It is presently felt that this allows adequate time for procurement of materir' and preparation of sufficient design change documentation and installation procedures.
In addition we are planning to initiate a test program to verify the integrity of the Yankee Rowe end seals under the Yankee Rowe environmental conditions. This testing will be initiated immediately on the sample end seals.
Any significant new findings resulting from these tests will be discussed with your staff if the need arises.
We trust that this information is satisfactory, however; should you desire additional information please call us.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY YN L. H. Heider Assistant Vice President Operations and Engineering o'
9 Ig 8013o30 72/
sj
M[/q
[
M REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
OISTRIBUTION FOR INCOMING MATERIAL 50-029 EC: STELLO V ORG: HEIDER L H DOCDATE: 06/19/78 idRC YANKEE ATOMIC ELEC DATE RCVD: 06/26/78
- 'C'i VPE: LETTER NOTARIZED: NO COPIES RECEIVED JOJECT:
LTR 3 ENCL 0
'RNISHING INFO CONCERNING POTENTI AL PROBLEMS WITH THE CONTAINMENT ELEC
- NETRATION END SEALS AND ADVISING OF APPLICANT"S INTENTIONS TO MODIFY THE rFECTED SAFETY RELATED END SEALS AT SUBJECT FACILITY.
ANT NAME: YANKEE ROWE REVIEWER INITIAL:
XJM DISTRIBUTOR INITI AL: gg,,
c>ecoo********** DISTCiBUiION OF THIS MATERI;;L IS AS FOLLOWS ******************
GENERAL DISTRIBUTION FOR AFTER ISSUANCE OF OPERATING LICENSE.
(DISTRIBUTION CODE AOO1)
FOR ACTION:
BR CHIEF ORB #2 BC**LTR ONLY(7) h FI INTERNAL:
LTR ONLY(1)
NRC PDR**LTR ONLY(1)
A cn *LTR ONLY(2)
OELD**LTR ONLY(1)
HANAUER**LTR ONLY(1)
CORE PERFORMANCE BR**LTR ONLY(1 AD FOR SYS & PROJ**LTR ONLY(1)
ENGINEERING BR**LTR ONLY(1)
REACTOR SAFETY BR**LTR ONLY(1)
PLANT SYSTEMS BR**LTR ONLY(1)
EEB**LTR ONLY(1)
EFFLUENT TREAT SYS**LTR ONLY(1)
J.
MCGOUGH**LTR ONLY(1)
EXTERNAL:
LPDR'S GREENFIELD, MA**LTR ONLY(1)
TIC **LTR ONLY(1)
NSIC**LTR ONLY(1)
I ACRS CAT B**LTR ONLY(16)
I
?.
p\\
- TRIBUTION-LTR 40 ENCL 0 CONTROL NBR:
-76i77004c-Z: 1P THE END
'D