ML20031G141
| ML20031G141 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 10/16/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Kay J YANKEE ATOMIC ELECTRIC CO. |
| Shared Package | |
| ML20030A278 | List: |
| References | |
| REF-GTECI-B-24, REF-GTECI-EL, TASK-06-04, TASK-6-4, TASK-B-24, TASK-OR, TASK-RR LS5-81-10-29, LSO5-81-10-029, LSO5-81-10-29, NUDOCS 8110210155 | |
| Download: ML20031G141 (4) | |
Text
-,
a
'3 October 16, 1981 gN' !' 4)
Docket No. 50-29 LS05 10-029
(
Mr. James A. Kay tl OCI2 0 D31%
Senior Engineer-Licensing p
u... m.m s,,',
Yankee Atomic Electric Company C}%
1671 Worcester Road Framingham, Massachusetts 01581
,/ /a ('.
Dear Mr. Kay:
SUBJECT:
SEP TOPIC VI-4, CONTAINMENT ISOLATION SYSTEM (ELECTRICAL)
YANKEE R0WE The staff has detemined that the scope of review and evaluation perfomed for multi-plant generic activity B-24 includes the electrical aspects of SEP Topic VI-4.
Additional review and evaluation is, therefore, not re-quired.
Enclosed is a copy of our trent-evaluatgof the electrical portion of j
generic activity B-24 for an Onofre Unit 1 3This assessment compares your facility, as describe n-Docket "a.50-029, with the criteria currently used by the regulatory staff for licensing new facilities.
Please inform us if your as-built facility differs from the licensing basis assumed in our assessment within 30 days upon receipt of this letter.
Our SER is the staff's position regarding design of your facility in tie subject area. With regard to the referenced topic, the staff has concluded your facility meets our current licensing criteria.
Sincerely, I
60 5
S Dennis M. Crutchfield, Chief
/
Operating Reactors Branch No. 5
'/ '
Division of Licensing g (,it)
Enclosure:
App' As stated 4
cc w/ enclosure:
See next page 8110210155 811016 DR ADOCK 05000 Qf
]gf p
c mca >
. 5 j -..
.S.QB.:.DL..'.h.
S[kB)p.l,...
.0.[6.f.5b.db.k..
orbit DL.:Eti.
.:{A:DL..
LDCrutchfield..RC -
0..
.-GL mas...
.RHemann.....
4 Russe.LI... j
. zo//k81 2/g./81
..(a'pz81 ol.l.:dk.
.._....y/..c/81 SURNQMEh
..9/.f81
. - ~ ~ ~ ~.
m/ s78i OFFICIA'L RECORD COPY uso m au - m oco Nac rosu sia oo-so nacu ono
4 Docket No. 50-29 L505 Mr. James A. Kay Senior Engineer-Licensing Yankee Atomic Electric Compar.y 1671 Worcester Road Framingham, Massachusetts 01 581
Dear Mr. Kay:
SUBJECT:
SEPTOPICVI-4,CONTAINMENTISOLATIONSYSTEM(ELECTRICAL)
YANKEE R0WE The staff has determined that the scope of review and evaluation performed for multi-plant generic activity B-24 includes the electrical aspects of SEP Topic VI-4. Addition:.1 review and evaluation is, therefore, not re-quired.
Enclosed is a copy of our current evaluation of the electrical portion of generic activity B-24 for Yankee Rowe. This assessment compares your facility, as described in Docket No.50-029, with the criteria currently used by the regulatory staff for licensing new facilities. Please inform us if your as-built facility differs from the licensing basis assumed in our assessment within 30 days upon receipt of this letter.
Our SER is the staff's position regarding design of your facility in the subject area. With regard to the referenced topic, the staff has concluded your facility meets our current licensing criteria.
Sincerely,'
Dennis M. Crutchfield, Chief Operating Reactors Branch No. 5 Division of Licensing
Enclosure:
As stated cc w/ enclosure:
See next page W
(See attached sheet for/ concurrances)
OFFICE )
su m uc) one>
OFFIClAL RECORD COPY usam mi-m.so unc ronu sia oo-so) nacu cao
3 Mr. James A. Kay CC Mr. James E. Tribble, President Yankee Atomic Electric Company 25 Research Drive Westborough, Massachusetts 01581 Greenfield Community College 1 College Drive Greenfield, Massachusetts 01301 Chairman Board of Selectmen Town of Rowe Rowe, Massachusetts 01367 Energy Facilities Siting Council' 14th Floor One Ashburton Place
~ Boston, Massachusetts 02108 U. S. Environmental Protection Agency Region I Office
~
ATTN: Regional Radiation Representative JFK Federal Building Boston, Massachusetts 02203 Resident Inspector Yankee Rowe Nuclear Power Station c/o U.S. NRC Post Office Box 28 Monroe Bridge, Massachus.etts 01350 5
6
4 e
ENCLOSURE SAFETY EVALUATION REPORT
^
YANKE'E R0WE PLANT OVERRIDE OF CONTAINMENT PURGE ISOLATION (MULTIPLANT ACTION B-24)
Introduction
~
Instances have been reported at nuclear power plants where the intended automatic closure of the containme,nt purge / ventilation valves during a postulated accident would not have occurred because the safety actuation signals were. inadvertently overridden and/or blocked, due to design.
deficiencies.
These instances were determined to constitute an Abnormal Occurrence (#78-5). As a follow-up action, NRR issued a generic letter requesting each licensee to take certain actions.
Evaluation The enclosed report " Electrical, Instrumentation and Control Aspects of the Override of Containment Purge Valve Isolation," (1542F) was prepared for us by EG&G, Idaho as part of our technical assistance contract program.
The report provides their technical evaluation of the design compliance with NRC-provided criteria.
Because the Yankee Rowe containment ventilation valves are locked shut as required by Technical Specifications, and have no automatic isolation signals or overrides, the NRC guidelines do not apply.
. Conclusion Based upon our review of the contractor's technical report, we conclude that the electrical portion of this topic does not apply to this plant.
The mechanical operability of the containment purge valves is being analyzed separately.
S
/
l l
, - - -