ML20040A270
| ML20040A270 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 12/17/1981 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Groce R Maine Yankee |
| References | |
| NUDOCS 8201200655 | |
| Download: ML20040A270 (3) | |
Text
,
DISTRIRilTTfirl:
g DLC 17 1981 (ITo~cket FiM l}
Ol NRC POR L PDR l
NSIC TERA ORB #3 Rdg Docket No. 50-309 DEisenhut t
0FLD DEisenhut Op
+
I&E-3 P.ECEIVED ACRS-10 lir. Itobert 11. Groce JHeltemes E
Senior Engineer - Licensing PMKreutzer-3 O
DEC3 0 !981>,
Maine Yankee Atonic Power Company RAClark h, maaraarm a r
1671 Worcester Road GRequa
-\\ Nya Framinghan, Massachusetts 01701 Gray File Q
g RPrevatte
Dear Mr. Groce:
SNowicki W
SUBJECT:
DEGRADED GRIb VOLTAGE PROTECTION FOR MAINE YANKEE We are continuing our review of the degraded grid voltage protection for Maine Yankee and request that you respond to the questions contained in the enclosure to this letter. Your response is requested within 30 days of your receipt of this letter.
This request for information involves less than 10 licensees and, therefore, does not require OM3 clearance..
Sincerely, 4
Cry m ; gi Roten ;s.gagg y, Clark Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing
Enclosure:
As stated I
cc w/ enclosure:
see next page l
9201200655 811217 PDR ADOCK 05000309 P
,0RB.Q.:
0,RB#3,: DL,,,,.
- omcc, SURNAME) 12//.fJ&l.....12/yJB1..
.121.s.}.61.
oare >
unc mau aia coma nncu om OFFICIAL RECORD COPY uss a im - m m ;
-6 rMaine Yankee Atomic Power Company
?
cc:
.., s.
.: w-E. W. Thurlow, President Mrs. L. Patric12 Doyle, Presiderit
~
Maine Yankee Atomic Power Company SAFE POWER F9R MAINE Edison Drive
' Post-Office Eox 774
~
Augusta, Maine 04'336 Camden, Maine 04F43 Mr. Donald E. Vandertorgh First Selectman of Wiscasset Vice President - Engineering Municipal Building Yankee Atomic Electric Company U. S. Route 1 20 Turnpike Road Wiscasset, Maine 04578 Westboro, Massachusetts 01581 Mr. Gustave A. Linenbe'rger John A. Ritsher, Esquire Atomic Safety and Licensing Board Ropes & Gray U.S. Nuclear Regulatory Commission 225 Franklin Street Washington, D. C.
20555 Boston, Massachusetts 02110 David Santee Miller, Esq.
Mr. Rufus E. Brown 213 Morgan Street, N. W.
Deputy Attorney General Washington, D. C.
20001 State of Maine Augusta, Maine 04330 Mr. Paul Swetland
- Resident Inspector / Maine Yankee Mr. Nicholas Barth c/o U.S.N.R.C.
Executive Director P. O. Box E Sheepscot Valley Conservation Wiscasset, Maine 04578 Association, Inc.
P. O. Box 125 Mr. Cha'rles B. Brinkman Alan, Maine 04535 Manager - Washington Nuclear Operatiris Combustion Engineering Inc.
Wiscasset Public Library Association 4853 Cordell Avenue, Suite A-1 High Street Bethesda, taryla'r.d 20014 Wiscasset, Maine 04578 '
Mr. John H. Garrity, Director Mr. Torbet H. Macdonald, Jr.
Nuclear Engineering & Licensing Of fice of Energy Resources Maine Yankee Atomic Power Company State House Station #53 Edison Drive Augusta, Maine 04333 Augusta, Maine 04336 Robert M. Lazo, Esq., Chairman Atomic Safety and Licensing Board U.S. Environmental Protertion Agency U.S. Nuclear Regulatory Commission Region I Office Washington, D. C.
20555 ATTN:
Regional Radiation Repr::entative JFK Federal Building
~
Dr. Cadet H. Hand, Jr., Director Boston,. Massachusetts 02203
- Bodega Marine Laboratory University of California Bodega Bay, California 94923 State Planning Officer Executive Department 189 State Street Augusta, Maine 04330 e e o
.g
5
?
s.
.'.,)
N ENCLOSURE n
DEGRADED GRID PROTECTION,:
REQUEST'FORADDITIONALINFOR9ITION "CiU'^-
~
~
~~
' MAINE YANKEE, 1.
A listing of all Class 1E equipment that may be running,or ma'y automatically start and the interval _of time that these equipment will be exposed to a deg~raded voltage under all plant conditions of operation.
2.
Manufacturers' data or appropriate testing to assure that no damage to these Class.1E equipment (i.e., motors, control circuits, fuses, etc) will occur and that they will be able to meet the system functional requirements during the interval of exposure to a degraded voltage condition.
The degraded voltages will include levels down to the loss of grid voltage relays (first level) which will provide ' automatic ' disconnection from tlie
~
the degraded power source.
3.
Description of the informat' ion system provided in the main control room for the operator to follcw the course of the transient and take necessary corrective action to ensure that Class 1E equipment are not damaged.
4.
Descripcion of the operator training and plant operating procedures instituted to ensure that the operator will make appropriate and prompt decisions to cope with this transient.
'5.
Description of a program to assure the reliability and availability of the information syste'm, referred to in item 3 abov,e.'
l' O
e I
l
.i e
.