ML17139A211
| ML17139A211 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 06/03/1981 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Curtis N PENNSYLVANIA POWER & LIGHT CO. |
| References | |
| NUDOCS 8106100051 | |
| Download: ML17139A211 (5) | |
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'ocket Nos.:
50-387 and SO-388 hfr. Norman W. Curtis Vice President-Engineering and Construction Pennsylvania Power and Light Company
'Duo North Ninth Street Allentown, PA 18101
Dear hfr. Curtis:
DIST.
'DDoc cet or Central.
LB 0"..
DEisenhut-
'Youngblood '-
MRushbrook RTedesco SHanuaer RVollmer
Enclosures:
As stated
Subject:
Susquehanna Steam Electric Station, Units 1 and 2-for additional information File Tifurley DRoss RHartfield, MPA OELD OIE (3)
RStark bcc; ACRS (16)
TERA NRC PDR L/PDR NSIC TIC Request As a result of our review of your application for operating licenses for the Susquehanna Steam Electric Plant, we found that we need additional infomation in the area of Reactor Systems.
The enclosed question was telecopied to PP(L during hhy 1981.
Please provide your final responses by June 1S, 1981.
Ifyou desire any discussion or clarification of the information requested, please contact R. M. Stark, Project Manager, (301) 492-7238.
Sincerely, cc w/encls.:
See next page Robert L. Tedesco, Assistant Director for Licensing Division of Licensing 8106 ~0 OC5l A
foal OFFICE)
SURNAME)
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o Mr. Norman M. Curtis Vice President - Engineering and Construction Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 CC:
Hr. Earle H. Head Project Engineering'anager Pennsylvani'a Power
& Light Company 2 North Ninth Street Allentown, Pennsylvania
'18101 Jay Silberg, Esq.
Shaw, Pittman, Potts 8
Trowbridge 1800 M Street, N.
t<.'ashington, D. C.
20036 Hr.. Milli.am E. Barberich, Nuclear Licensing Group Supervisor Pennsylvania Power
& Light Company 2 North Ninth Street Al1entown, Pennsyl vania 18101 Hr. E.B. Poser P'roject Engineer Bechtel Power Corporation P. 0.
Box 3965 San Francisco, California 94119 Matias F. Travi eso-Di az, Esq.
Shaw, Pittman, Potts Trowbridge
'1800 H Street, N. M.
Washington, D. C.
20036 Dr. Judith H. Johnsrud Co-Di rector Environmental Coalition on Nuclear Power 433 Orlando Avenue State College, Pa 16801
--Edward M. Nagel, Esquire General Counsel and Secretary Pennsylvania Power
& Light Company.
2 North Ninth Street
. Allentown, Pennsyl vani a 18101 Bryan Snapp, Esq.
Pennsylvania Power 8 Light Company 2 North Ninth Street Al1 entown, Pennsyl vani a 18101 Robert M. Gallo Resident Inspector
'. 0.
Box 52 Shickshinny, Pennsylvania 18655 John.L. Anderson Oak Ridge National Laboratory Union Carbide Corporatioh Bldg. 3500, P. 0.'ox X
Oak Ridge, Tennessee 37830 Gerald R. Schultz, Esq.
Susquehanna Environmental Advocates P. 0.
Box 1560 ttikes-Barre, Pennsylvania 18703 1
Hr. Thomas M.:"ierusky, Director Bureau of Radiation Protection Department of Environmental Resources Commonwealth of Pennsylvania P. 0.
Box 2063 Har risburg, Pa 17120 Ms. Colleen Harsh Box 538A, RD5'4 Mountain To~,
PA 18707 Hr. Thomas.J.
Hall igan Corre'spondent The Ci.tizens Against Nuclear
.Danagers P. 0.
Box 5 Sc'ranton, Pennsylvania 18501 Mr. J.M. Hillard Proje'dt MAnager Mail Code 394 General Electric Company 175 Curtner Avenue San Jose, California 95125 Robert M. Adler Dept. of Environmental Resources 505 Executive House P. 0.
Box 2357 Harrisburg, Pennsylvania 15120
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211.296 Calculations of NPSH available to ECCS pumps in BNRs are normally provided with reference to the pump suction.
Ne are concerned that under certain post accident conditions the potential may exist for damage to ECCS pumps from cavitation because of local flashing in the system suction lines.
The potential can result'or example from local elevation changes in the
'iping runs.
Calculations of NPSH available at the pump suction may erroneously assume liquid continuity up to the point of pump 'suction.
Provide an analysis with calculations which demonstrates that the NPSH available at all points in all safety related pump suction piping, is adequate to preclude local flashing and pump cavitation under the worst postulated conditions.
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