ML19210B168
| ML19210B168 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/15/1975 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Arnold R METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7911040097 | |
| Download: ML19210B168 (4) | |
Text
>
- 3 *' ~
']
y N. ~
f
B' m
g
.~
J,6 6
.b
.S-Distribution:
Docket Abernathy September 16, 1975 NRC PDR CMiles Local PDR ORB #4 rdg Docket No. 50-289 OELD OISE (3)
KRGoller Metropolitan Edison Company' TJCarter ATTN: Mr. R. C. Arnold JMcGough Vice President - Generation RWReid P. O. Box 542 DNBridges Reading, Pennsylvania 19603 RIngram DEisenhut Gentlemen:
Svarga ACRS (16)
In order for us to complete our review of the Three Mile Island Unit 1 (TMI-1) emergency core cooling system (ECCS) perfonnance reefalua-tion submitted August 8,1975, it will be necessary for you to provide additional information regarding the containment input parameters. The specific data and justification desired are identified in the enclosure i
to this letter. Your reply is requested within 30 days of receipt of this letter.
Sincerely.
Robert W. Reid, Chief Operating Reactors Branch f4 Division of Reactor Licensing
Enclosure:
Request for Additional Information cc: See next page 1537 066 g
ORB #
0 e
'c =,
DNBridges/dg
__RWR.el d.
9/ _]y /75 9/ / 2 /75 o v.
- r-uc.m a.,.m acx mo
n
]
Metropolitan Edison Company -
cc:
G. F. Trowbridge, Esquire Shaw, Pittman, Potts, Trowbridge 5 Madden Barr Building 910 17th Street, N. N.
Washington, D. C.
20006 GPU Service Corporation Richard,W. Heward, Project Manager Thomas M. Crimmins, Jr., Safety and Licensing Manager 260 Cherry Hill Road Parsippany, New Jersey 07054 Pennsylvania Electric Company Vice President, Technical 1001 Broad Street Johnstown, Pennsylvania l'5907 Mr. Weldon B. Archart, Chairman Board of Supervisors of Londonberry Township 2148 Foxiana Road Middletown, Ppnnsylvania 17057 Miss Mary V. Southard, Chairman Citizens for a Safe Environment P. O. Box 405 Harrisburg, Pennsylvania 17108 Government Publications Section State Library of Pennsylvania Box 1601 (Education Building)
Harrisburg, Pennsylvania 17126 e
15S7 007
e
~
q
~J REQUEST FOR ADDITIONAL INFOR'MTION THREE MILE ISL/dTD, U'!IT 1
~
DOCKET NO. 50-289_
i Provide The ECCS analysis for your plant is referenced to BAW-10103.
i justification for the following input parac' eta.rs used in EAW-10103 b son with the appropriate values for your plant.
Net Free Containment Volu=e - Justification should include the total g 1.
internal contain=ent volume and the internal structures and equipment t i ment and their volumes which are subtracted to obtain the net free A discussion of the uncertainties should be provided.
volu=e.
sink structures Sinks - Provide the actual passive heat 2.
Passive Heat Discuss the methodi of determining the passive contain=ent for your plant.
Identify each heat sink by category (i.e., cable tray, equip-heat sinks.
f re a, ment supports, floor grating, crane wall, etc.) and provide sur ace a thermal conductivity and volumetric thickness, materials of construction, transient heat capacity, by component category used in the containment analysis code.
Startine Time of Contcinrent Cooline Svstem(s) - Discuss 3.
l i show that the start time (s) assuned in the containment response ana ys s represent the earliest possible initiation of syste (s) operation.
Containment Initial Conditions _ - Compare the initial values of temperature 4.
f values pressure and relative humidity in the containment with the range o
.that will be permitted during plant operation.
the value of containment Containeent Sorav Water Te=cerature - Show that 5.
is the spray water temperature used in the containment response ai.alysis lower bound temperature consistent with plant operating conditions a that the spray flow rate used is suitably conservative.
~
1587 068
, ;o q
.s l
Fan-Cooler Heat Removal Rate _ - Compais the maximum f an-cooler heat re 6.
Show rate for Three Mile Island, Unit 1 with that assu=ed in BAW-10103.
have been that minimum operational values of service water temperature
?
used.
If any of the above parameters are less conservative for your plant 7.
h itivity than used_in the generic evaluation of BAN-10103, provide t e sens This of these parameters to the overall contain=ent pressure response.
itainment evaluation should de=onstrate the overall conservatism of your cor parameters to those used in BNJ-10103.
l.
i e
15C7 069 0
G se e
~I...,.
.-.o
..m