ML20236F569
| ML20236F569 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/26/1987 |
| From: | Travers W Office of Nuclear Reactor Regulation |
| To: | Crutchfield D, Schroeder F Office of Nuclear Reactor Regulation |
| References | |
| CON-NRC-TMI-87-081, CON-NRC-TMI-87-81 NUDOCS 8711020208 | |
| Download: ML20236F569 (4) | |
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?EMORANDUM FORf i 1 r
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%O NRC THI-2 CLEANUP, PROJECT DIRECTORATE STATUS <
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REPORT FOR SEPTEHBER. OCTOBER;25, 1987, M
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4 3 h dF Pick and place defueling of the core region. continued.'3Th'us far 1643 JI 2
%0 of1177zpartial 1ength' fuel assemblies thave been removed.dboutJ.
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'180,000'lbs of a total of approximately 300,000l1bs;of core debris l M d
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' and other materials have been removed. Completion of partial" length:
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@M assembly removal an'd removal of remaining loose pins and frocks" ist expected in Hovember.
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During October additional testing of.tha 1ower? head vacuumTsystec1
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lower head vitflow holesJbelow gridilocations D-12 and Ka9. ;These' d
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are 2 Lof' the 5, grid locations?.whereificwTholes1through?the?lowar;,.
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$h core support assenibly components align? allowing'directlaccess toJthe; s $g lower head of the reactor vessel.: Each # stem successfullyiloa_dedl
'q several.hunked pounds of. core debris. : The min 11airL11ft was; morel 1
ji successful in that it clogged less frequently 4thus minimizing timei "
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spent unclogging'and backflushingc.
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- 2c ENVIRONMENTAL MONITORING'
,p37 US Environmental Protection: Agency (EPA) sa'aple?analys'is' results
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%y b4 TMI water effluents froni thefshtioni(Units l andc2) dischargeLare i
ph 1 analyzed by EPA.~LGamma spectrum ~ analyses;of j;fp esamplestfor-SeptemberL12: through 0ctob'eri10h;the daily compositedi i
1987Tshowed nofreactor, h.
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JlRC/THI-87-081' EPA's gamo spectrua analysis. o_f= the NRC's THI outdoor' air' samples a
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for September.10 Lthrough October 10, 2907 sh6wed no. reactor related' j
radioa.ctivity..
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. Daily water samples are taken at the City of Lancaster water works'=
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intake. These daily. samples are composited and are analyzed by.tho' EPA weekly.
EPA's. gamma. spectrum analysis of composite samples fori September,13.- 19f September 20 26, Septoaber 2/
L0ctober:3, and:
October 4 - 10, 1987 showed no reactor related radioactivity.
1 3.
DECONTAMINATIDH ACTIVITIES Scabbling of tha Seal Injection Valve Room has been temporarily:
p halted.. Ventilation system problems have caused radioactively; j
contaminated dust from the scebbling operat.ionL to spredd to the 320' elevation of the Fuel Handling Building.- Work will resume when the1 1
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ventilation problems.are resolved.
Atteapts were made to sluicc their'esin from ths makeup and' 4
purification' system demineralizers' The attempts were unsuccessful 1
due to an apparent blockage or valve malfunction in the flow path.
q Uhen the blockage is cleared the resin will be ' transferred to the, i
spent resin storage tanks for sampling,' analysis, and ultimately for j
solidification for offsite disposal.
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4 Vacuum defueling of the "A" and "B" Once Through Steam Generator
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f (OTSG) tube sheets was completed. About 30 - 35 lbs of debris were collected and placed in fuel canisters.. Sanples of the debris fron the "B" OTSG were retained for analysis.
j The Phase III decontamination endpoint.was reached in the "s" and "C" Reactor Coolant Bleed Yank Roou, the Makeup Tank Room, and the Nakeup Suction Valve Room..To date, 109 of the 143 contaminated' cubicles have been decontaminated the the Phase IV endpoint.. Twenty of these have been completed 'in 1987. : 0f th? 'reminingl34 cubicles, 21 are scheduled for completion in 1987 arid the remainingzl3 are scheduled for 1988, 4.
NRCEVALUATIONSINPROGRESS u
Technical Specification Change Requests 52, 53 and 56.
Recovery Operations Plan Chenge Request 38..
Solid Waste Facility Technical Evaluation Report, Processed Water Disposition Proposal,'
t Safety Evaluation Report.for Defueling of tthe Core Support Assembly.
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Environmental Evaluation of the Post-Defueling. Monitored Storage Proposal.
Canister Handling and Preparation.for Shipaent Safety Evaluation Report,-Revision 4 and Revision S.
Defueling Water Cleanup Systen Technical Evaluation Report Annual-Update.
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flRC/TMI-87-031 o.
Defueling Car,ister Technical Evaluation. Report Almual Opdate..
Request for Exemption fron.10 CFR 70.24 Requirements.
i During the reporting period, the staff approved the licensee's proposal' for defueling of the pressurizer. The proposal involves vacuuming debris fron.the pressurizer with a submersible pump, filteririg the puap effluent and returning the filtered water to the reactor vessel.- The analyses.
have concluded that there are less than 25 kg of fissile material in' the pressurizer. The. staff.also approved the licensee's' proposal to place two solidified disposal liners in.the waste handlin'g and packaging facility (WitPF) for examination. The total,curic loading of the liners
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exceeds the amount of radioactive material-allowed in the WHPF by a
r previous analyses.
The' staff examined the offsite dose consequences of.-
l accidents involving the liners and detemined that the consequences are a
. factor of 10 lower than the consequences of accidents involving,the normal uaste natorial in the facility. This is due to the. radionuclides.
mix and the solidification media in the liners.
~1 5.
PUBLIC !!EETIllG l-No date has been set for the~ next nocting of the Advisory Panel for the I>
Decontamination of Three Mile Island Unit 2.
The details of the next nacting will be announced.
l ORIGINAL. SIGNS) ty, William D. Travers Willian D. Travers Director TMI-2 Cicanup Pr@act Directorate I
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fiRC/THI-87-081 IllTERf1AL DISTRIBUTI0il ICDlTRAL FTLE 3
liRC POR LOCAL PDR E00 OGC EPA.
DOE RI Regional Aduinistratur R1 Division Directors Public Affairs, RI State Liaison, RI Ti!I IlQ r/f Ti!I SITE r/f TetI-2 Project Section File T}il-1 Resident Office (5)
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