ML17195B055
| ML17195B055 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/15/1985 |
| From: | Zublinski J Office of Nuclear Reactor Regulation |
| To: | Kober R ROCHESTER GAS & ELECTRIC CORP. |
| Shared Package | |
| ML17195B056 | List: |
| References | |
| LSO5-85-02-011, LSO5-85-2-11, NUDOCS 8502210117 | |
| Download: ML17195B055 (3) | |
Text
- *Docket No.
50-244~
L~05-85~02-0ll
~
UNITED STATES e
NUCLEAR REGULATORY COMMISSION WASH.ING TON, D. C. 20555.
February.15, 1985 Mr. Roqer W. Kober, Vice Pre~ident Electr~c and Steam Production Rochester Ga.s and El ectric'"":'Corporat"ron 89 East Avenue Rochest~r, New York 14649
Dear Mr. Kober:
SUBJECT:
TRANSMITTAL OF TEST DATA ON UPPER. PLENUM INJECTION (UPI) AND A 2 DAY UPI MEETING ABOUT MARCH 12-14, 1985
.Re:.
R. E. Ginna Nuclear Power Plant
~-~
~*;::.p*.::*.
- ~
- !'~'** ***
At the january 10, 1985 meeting at NRC to discuss upper plenum injection (UPI),
,6;.,,,,.:..
NRC. was.asked to p~ovide addition~l UPI test da!a as soon as it could be made
- f~::~\\~:
avaiJable. Accordingly, we are pro"viding herewith three copies of
- \\;
- i:,f~1;_1I k "-* JAERI:M-84-221, Ef~ects of Upper Plenum Injection on Thermal-Hydrodynamic*
- .,. tOJ.-fW Behav1 or Under Ref111 and Refl ood Phases, December 1984.
~- i.'v I '
T.his report describes the effects.of UPI as measured on the Slab Core Test.
- Facility (S(:TF) operated by the Japan Atomic Energy Research Institute (JAERI).
It contains SCTF test data which show that (1) adding UPI to a cold leg injection (CLI) system caused the post-LOCA maximum core temperature to decrease from 1195°K.to 1158°K and (2) subcooling of the UPI water caused a further decrease to 1119°K (per pages 24-27).
However, (3) the corresponding time to bottom of core recovery (BOCREC) (equivalent to the beginning. of reflood)*increased substantially from 19 seconds to 80 and 81 seconds (per pages 47 and 30) and (4) downward flow of subcooled UPI liquid into the core was apparently intermittent (per pages 6, 37 arid 47).
The SCTF-UPI data is not directly applicable to the existing Westinghouse two loop UPI plants because the SCTF-UPI test used both accumulators and.Pumps to provide both UPI.and CLI, with the UPI flow about equal to the CLI flow (per page 2~). Additionally, the UPI nozzle was at th~ bottom of the upper
- o l P.nurn (per page 24) ra.ther than the level of the hot 1 egs.
Neverthe 1 ess,
- the SCTF tests had important features representative of a full size 1100 MWe
\\*!estinghouse PWR, e.g., full height heater rods and full radial width cf a core. Also, the tests document phenomena which cin* be used to develop and/or test i UPI model, e.g., hot leg flow reversal (pages 15 and 53-54), fluid temperature variations in the upp~r plertum and upper core (pages 38-40) and horizontal pres-Sifre variations at three heights inside the core (pages.42-43).
L
.. --*--0-*5-o.~~10111 a5o2i5T~--*,. J PDR ADOCK 05oog5~4 ~- **\\...
p
- .---- _L -*--
Mr. Roger February 15, 1985 Bes ides.. providing JA.ERI-M-84-221, we will provide proprietary 11 Qui ck Look 11 Reports ("QLRs) on UPI tests a't JAERI's Cyl.indrical Core Test Facility (CCTF) as. follows~:, (1) QLRs on CCTF" UPI t~s.ts 57 and 59 were provided previously; (2} ii~QLR.on the no-singfe failu.q~* UPI test 72 will probably be available in Feb.rua.f'y*qr Ma,rch;_~nd (~)"dr.aft_-.QLRs on asyrrrrnetric UPI tests 76 and 78 will probably be*available fn*tviarth.** w,e:-suggest you provide copies of the enclosure and 6f ~he~QLRs to tho~e fuef ~en~ors assisting you in UPI model development.
'.::.. ""....,_. :<. J ~: :*
.}
- .. *_. ~
\\~- '.' '...
..... ~ ~~ 1-*:.
~i..
An NRC~JAERI discussi~n-bf:the~U~L tests will be held in the Bethesda, Md.
ar~a* for 21 day~ about March 12*-1'4~ 198~.**
The NRC Office of Nuclear Regulatory Research-'(RES*) 'expe;cts. to*iarraf)ge,;for UPI licensees and their designated fuel vendor. repie~f,!ntatives td" o,bseY;ve_}.thoSe discussions and to participate with JAERl representative~ *irj :round-tabJe'.*technical discussions of UPI phenomena.
We a_nticipate that we *wfll be abl¢ to *keep the discussions from becoming unwieldy if we limit eath.UPI ~icensee to designating one employee observer, one employee particfpant, one.veridor observer and one vendor participant, with a maximum of 6ne observer*"and one participant present from any given fue 1 vendor.
- Please let NRC know if you intend to send an employee observer, an employee technical partieipant;* a vendor observer and/or a ve~dor technical participant so that we can set µp the meeting with JAERI and the NRC.
Please respond by phone by February 20, 1985*to your NRC Project Manager, Charles Miller, (301) 492-9503.
Enclosures:
JAERI-M-84-221 (3) cc w/enclosures:
See next page DISTRIBUTION Docket
. NRC PDR Local PDR ORB Reading NSIC JZwol inskiw/o CJamerson BSheronw!o DL:ORB#5~
CJamerso "b
02/12/85 OELD ELJordan PFMcKee ACRS ( 10)
SEPB CMiles, OPA CMi ll er DLangford w/c DL: QRj3#5 cgj{fler 02/l'f/85 Sincerely,
..... ~bf John A. Zwolinski, Chief Operating Reactors Branch #5 Division of Licensing "Z'
DL:ORB#5 JZwolinski
.i,.J,1'3 /85
.f"./. *.<./.
. *.: ~
- ~.
~+/-~;:e~~~r~*
- ~£r~f 7
- ~~-:. ~ *
. *:~. ": ~ :'......
Mr. RoQer W. Kober cc Harry H. Voigt, Es qui re *.,
LeBoeuf, Lamb, Leiby and MacRae 1333 New *Hamps*hfre Avenue, N.. W.
Suite 1100 '*'.
Washington, D.C.
20036
, I' Ezra Bialik Assistant Att6rney Generai*
- Environmental Protection Bureau New York State Department of Law 2 World Trade Center New York~ New York 10047 Resident Inspectbr R.E. Ginna Plant
. *c/o U.S. NRC 1503 Lake Road
-Ontario, New York 14519 Stanley B. Klimberg, Esquire General Counsel
- New )'ork State Energy Of ti ce... *.:.. * -
Agency Building 2 Empire Stat~ Plaza
- Alban~, New York 12223 Dr. Thomas E. Murley Regional A~inistrator Nuclear Regulatory Commission Region I Office 631 Park Avenue King nf Prussia, Pen~sylvania 19406 Supervisor of the Town of Ontario 1850 Ridge Road
- Ontario, New York 14519 Jay Dunkleberger
- 3 Division of Policy Analysis & Planning New York State Energy Office Agency Building 2 Empire State Plaza Albany, New York 12223 U. S. Envirormental Protection ~gency Region* II Office ATTN:
Regional Radiation Representative 26 Federa 1 Plaza New York, New York 10007 February 15, 1985
, :