ML20198C728
| ML20198C728 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/04/1985 |
| From: | Travers W Office of Nuclear Reactor Regulation |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| CON-NRC-TMI-85-084, CON-NRC-TMI-85-84 NUDOCS 8511120161 | |
| Download: ML20198C728 (5) | |
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November 4,1985 NRC/Tril-85-084 a
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,g f1EHORANDUM FOR:
Harold R. Denton, Director Office of Nuclear Reactor Regulation FROH:.
William D. Travers, Acting Director TMI Program Office
SUBJECT:
NRC THI PROGRAM OFFICE WEEKLY STATUS REPORT FOR OCTOBER 28, 1985 - NOVE!!BER 3, 1985 1.
DEFUELING i:
On Thursday, October 31, 1985, GPU Nuclear began the first phase of defueling the damaged reactor core. The operations in this limited initial phase involve the rearrangement of core debris within the reactor vessel. This will provide clearance for the installation of equipment which is needed to facilitate the removal of fuel from the reactor vessel.
Specially trained operators, under the direction of licensed Fuel Handling Senior Reactor Operators, used long-handled manual and hydraulic o
tools to move damaged fuel and assorted core material within the reactor vessel.
In the next few weeks initial defueling activities are expected to include; loading of debris into specially designed baskets, which will later be loaded into defueling canisters and removed from the reactor vessel, and the identification and positioning of core debris samples for later removal and examination. The licensee expects to begin removing fuel from the reactor vessel sometime during November 1985. Onsite NRC personnel are monitoring activities.
2.
PLANT STATUS The facility remains in long term cold shutdown with the Reactor Coolant System (RCS) vented to the reactor building atmosphere and the reactor vessel head and plenum assembly removed from the reactor vessel.
The plenum is on its storage stand in the deep end of the fuel transfer canal. A dam has been installed between the deep and shallow ends of the fuel transfer canal. The deep end is filled with water to a depth of about 20 feet (about 5 feet above the top of the plenum).
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The modified internals indexing fixture is installed on the reactor vessel flenge and is flooded to elevation 327 feet 6 inches (151 feet above the top of the core region). The defueling platform is gd(
installed over the Internal Indexing Fixture in preparation for IP defueling.
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Harold R. Denton 2
tiovember 4, 1985 Bernard J. Snyder
- NRC/THi -SS-084 Calculated reactor decay heat is less than 12 kilowatts.
RCS cooling is by natural heat loss to the reactor building ancient atmosphere.
Incore thermocouple readings range from 70*F to 93*F with an average of 82*F.
The average reactor building tenperature is 53"F.
The reactor building airborne activity is 5.0 E-8 uCi/cc Tritium and 3.5 E-10 uCi/cc particulate, predominantly Cesium 137.
Spent Fuel Pool "A" is ficoded to a depth of 20 feet. About 6 feet of water is over fuel canister storage racks.
3.
WASTE MANAGEttENT The Subaerged Demineralizer System (SDS) continues processing batch 125, Fuel Transfer Canal through Train No.1.
To date a total of 185,201 gallons has been processed.
EPICOR II is temporarily shutdown while changing out liners.
Total volume processed through SDS to date is 3,174,794 gallons, and the total volume processed through EPICOR II is 2,700,737 gallons.
10 CFR 61.55 Exenption approval was given by NRC shich authorized the licensee to classify EPICOR II liners containing 1 microcuries per cubic centimeter of Strontium 90 as Class A waste.
4.
DOSE REDUCTION / DECONTAMINATION ACTIVITIES Decontamination activities are continuing on the 281' level of tho auxiliary building.
Average general area radiation dose rate is 40 mrem per hour on the 347' level of the reactor building and is 67 arem per hour on the 305' level of the reactor building.
Renoval of insulation and decontamination of the pressurizer is in progress.
5.
ENVIRONMEHTAL_ W' iITORING US Environmental Protection Agency (EPA) sample analysis results show T!!I site liquid effluents to be in accordance with regulatory liaits, NRC requirements, and the City of Lancaster Agreement.
THI water samples taken by EPA at the plant discharge to the river consisted of seven daily composite samples taken from October 12 through October 19, 1985. A gamma scan detected no reactor related activity.
The Lancaster water sample taken at the water works intake and analyzed by EPA consisted of a seven day composited sample taken from October 13 through October 19, 1985. A gama scan detected no reactor related radioactivity.
The NPC outdoor airborne particulate sampler at the THI Site collected a sample between October 23 and October 30, 1985. No reactor related radioactivity was detected. Analysis showed Iodine-131 and Cesiun-137 concentrations to ha less than the lower limits of detectability.
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NRC FORM 318 (10 POI NRCM O240 OFFICIAL. RE' CORD COPY
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Haroit R. Denton 3
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November 4, 1935 Barnard J. Snyoer NRC/Till-85-084 6.
RADI0 ACTIVE MATERIAL /UASTE SHIPMEi>TS During October 1985 the shipments listed below warc mde from the Ttil site.
October 1 - Unit 1, a new fuel assembly was returned to vendor at Lynchburg, VA.
October 3 - Combined laundry shipment; 75 drums,1 box of protective clothing to Royersfoni, PA.
October 8 - Unit 1 liquid radioactive samples sent to Rockville, MD.
October 9 - Coabined laundry shionent; 40 drums, 2 boxes of protective clothing to Royersford, PA.
Octot _r 11 - Unit 2 lower head debri; samples were sent to Idaho National Engineering Laboratories at Scoville, ID.
October 15 - Cor.bined laundry shipment; 73 drums, 2 boxes of crotective clothing to Royersford, PA.
October 17 - Unit 1 unccnpacted trash in a steel box and three liners containing dewatered resins to Hanford, WA.
October 21 - Combined shipment of barrels and boxes of coapacted and uncompacted waste to Hanford, MA.
October 21 - Unit 1 solidified radioactive liquid in a steel liner sent to Barnwell, SC.
October 24 - Combined laundry shipr.wnt; 97 drums, 2 boxes of protective clothing to Royersford, PA.
October 29 - An EPICOR II dewatered resin liner was sent to Hanford, WA using the recently approved NRC and Washington state exemptions for shipment / disposal of Strontium 90 in wastes.
October 30 - Combined laundry shipment; 49 drums,1 box of protective clothing to Royersford, PA.
October 31 - Unit 2 scrap metal was sent to Oak Ridge, TH.
7.
REACTOR BUILDING ACTIVITIES Defuel'ig Water Cleanup System (DWCS) preoperational testing and modif'.ation continued.
Installation of the vacuum defueling system is in progress.
Work is in progress on the canister positioning system.
Canister handling bridge indexing and load testing is in progress.
The initial phase of defueling the reactor core is in progress.
8.
AUXILIARY AND FUEL HANDLING BUILDING ACTIVITIES Installation of the DWCS continued. Partial DUCS turnover for processing RCS during early defueling is expected to be completed in October.
Spent Fuel Pool has been flooded to a depth of about 20 feet (about 6 feet above the top of the fuel canister storage racks).
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Harold R. Denton 4
November 4,1985 Bernard J. Snyder NRC/THI-85-034 9.
NRC EVALUATIONS IN PROGRESS Technical Specification Change Request number 49.
Recovery Operations Plan Change numbers 29, 31, and 32.
Fuel Canister Technical Evaluation, Revision 1.
Defueling Safety Evaluation.
SDS Technical Evaluation and Systen Description Update.
Core Stratificar'on Sample Safety Evaluation.
Heavy Load Handling Safety Evaluation Report.
Defueling Water Cleanup Systen Technical Evaluation Report, Revision 7.
Containment Air Control Envekpe Technical Evaluation Repart, Revision 5.
- 10. PUBLIC HEETING The next meeting of the Advisory Panel is scheditled for 11:00 AM, November 19, 1985, in Washington, DC, before the NRC Cocmissioners. The next meeting in the TMI area is ccheduled for Decencer 12, 1985, at the Harrisburg, PA Holiday Inn, 23 South Second Street, Harrisburg, PA, frori 7:00 PH to approximately 10:00 PM.
Persons desiring the opportunity to speak before the Panel are asked to contact tir. Thomas Snitngall at 717-291-1042 or write to him at 2122 ilarietta Avenue, Lancaster, Pennsylvania 17603.
CRIGINAL $10NE Bf Wmm D. Travers Uillian D. Travers Acting Director TMI Program Office
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