ML19206B301
| ML19206B301 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/26/1978 |
| From: | Fess G NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD) |
| To: | Johnson W, Rosenthal A, Sharfman J NRC ATOMIC SAFETY & LICENSING APPEAL PANEL (ASLAP) |
| References | |
| NUDOCS 7905080360 | |
| Download: ML19206B301 (1) | |
Text
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Distribution:
F. Fess
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H.McGurren S.Treby H. Silver ll6c-Phillies July 26, 1978 s-EP 314-Phill i ps D.Vassallo 110-Phillips Alan S. Rosenthal, Esq., Chaiman Dr. W. Reed Johnson, Member Atomic Safety and Licensing Appeal Atcaic Safety and Licensing Appeal Board Board U.S. Nuclear Regulatory Comission U.S. Nuclear Regulatory Cccnission Washington, D.C.
20555 Washington, D.L.
20555 Jerome E. ShaMi::an, Esq., Member f.3 Atcmic Safety and Licensing Appeal E ge ardt Board M.Grossman U.S. Nuclear Regulatory Comission Washington, D.C.
20555 p
ELD FF (2)
Chron.
In the Matter of Metropolitu Edison Company, et al.
(Three Mile Island Nuclear Station, Unit 2)
Docket No. 50-320 Gentlecen:
Enclosed for your information 1s a copy of a memorandum with attach-
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ments, dated July 11, 1978 from Harley Silver, Project Manager for the Three Mile Island, Unit 2 Nuclear Station to D. B. lssallo, Assistant Director for Light Water Reactors. The memorandum 'cratifies three items which have arisen lately and relate to the Three.'mle Island, Unit 2 facility. The Staff is presently evaluating these items and will advise you of the results of its review in the near future.
Sincerely.
Gregory Fess Counsel for NRC Staff
Enclosure:
As stated _
u cc w/ enclosure:
Edward Luton, Esq.
Ms. Judith H. Johnsrud Mr. Gustave A. Linenberger.
, Atomic Safety and Licensing George F. Trowbridge, Esq.
Board Panel Dr. Ernest O. Salo Atomic Safety and Licensing Dr. Chauncey R. Kepford Appaal Panel Ms. Karin W. Carter Docketing and Service Section
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Alan S. Rosenthal, Esq., Chairman Dr. W. Reed Johnson, Member At0mic Safety and Licensing Appeal Atcmic Safety and Licensing Acceal Board Scard U.S. Nuclear Regulatory Ccmission U.S. Nuclear Ragulatory Cc= mission Washington, D.C.
20555 Washington, D.C.
2CE55 Jerome E. Sharfman, Esq., Member Atomic Safety and Licensing Appeal
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U.S. Nuclear Regulatory Ccmission
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In the Matter of Metrc::alitan Edison Ccmpany, et gA.1
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(Three Mile Island Nuclear Station, Unit 2)
'C",,,d p W hg Decket No. 50-320 Gentlemen:
Enclo ed for your infor ation
,5 a cacy of a memorandum with attach-ments, dated July 11, 1978 frca Harley Silver, Project Manager for the Three Mile Island, Unit 2 Nuclear Station to 3. S. 'lassallo, Assistant Director for Light Water Reactors. The memorandum identifies three items which have arisen lately and relate to the Three Mile Island, Unic 2 facility. The Staff is presently evaluating these items and will cuvise you of the results of its review in the rear future.
Sincerely,
%[
k M Gregory Fess Counsel for NRC Staff
Enclosure:
As stated cc w/ enclosure:
Edward Luton, Esc.
Ms. Judith H. Jchnsrud Mr. Gustave A. Linenberger Atcmic Safety ard Licensing George F. Treweridge, Esq.
Board Panel Dr. Ernest O. Salo Atcmic Safety and Licensing Dr. Chauncey R. Kepford Acpeal Panel Ms. Karin W. Carter Dccketing and Service Section 77 0.k b zJ e...
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MEMORANDUM FOR:D. 3. Vassallo, Assistant Director for Light v.'a ter Reac to rs, DPM (I..
FROM:
H. Silver, Proj ect Manager, Light Water Reactors Branch No.
4, DPM C;} us THRU:
S. A. Varga, Chief, Light Water Reactors'"
Branch No.
4, DPM
SUBJECT:
ITEMS FOR T.'!I-2 HEARING 30ARD The following items have arisen lately on TMI-2 which may be of interest to the hearing board.
(The appeal board is still convened.)
1.
Purge Valve Operability In response to concerns raised by the Containment Systems Branch, the Mechanical Engineering 3 ranch has identified certain requests for additional in-formation regarding operability of the containment purge valves.
These requests deal with confirmatory information to more completely document the ability of the containment purge valves to close if they are in use at the time of a LOCA.
Present technical specifications restrict the time these valves may be open with the reactor critical to 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> per year.
Responses to our requests are not expected to raise any issues which represent significant safety problems.
2.
Burnable Poison Rod / Orifice Rod Assemblies At another operating 35W reactor, it was found that two burnable poison rod assemblies (BPRA) had been ejected from the core and pieces of several components had been carried into the steam generator inlet plenums.
The reactor was safely shutdown and no damage was done which represented a significant safety issue.
35W concluded that this problem was due to wear in the 3PRA ball-lock coupling caused by hydraulic lifting of the BPRA during operation with all four reactor coolant pumps.
35W proposed installation of a 3PRA retailer which won 1 "vo"4da
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