ML20010A702
| ML20010A702 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/27/1981 |
| From: | Barrett L Office of Nuclear Reactor Regulation |
| To: | Harold Denton, Snyder B Office of Nuclear Reactor Regulation |
| References | |
| CON-NRC-TMI-81-042, CON-NRC-TMI-81-42 NUDOCS 8108120071 | |
| Download: ML20010A702 (4) | |
Text
DISTRIBUTION TMI Program Office /HQ r/f TM E r/f NTRAL FILE
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NRC PDR July 27,1981 LOCAL PDR NRC/lNI-81-042 Site Operations file M314.
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NDS MEHORANDUM FOR:
Harold it. Denton, Director Office of Nuclear Reactor Regulation
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Bernard J.' Snyder, Program Director Tit! Program Office FRON:
Lake H. Barrett, Depety Program Director THI Prograr Office
SUBJECT:
NRC TMI PROGRAM.0FFICE WEEKLY STATUS REPORT Enclosed is the status report for the period of July 19 - 25, 1981.
Original signed by we H. Barrett Like H. Barrett Deputy Program Director TMI Program Office
Enclosure:
As stated cc: EDO OGC Office Directors Comissioner's Technical. Assistants NRR Division Directors.
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'""C' OFFICIAL RECORD COPY i
NRC TM1 PROGRAM 0FFICE WEEKLY STATUS REPORT J
Week of July 19 - 25, 1981
~ Plant Status Core Cooling Mode: Heat transfer from the reactor coolant system (RCS) loops to Reactor Building ambient.
Available Core Cooling Modes:
Decay heat removal systems.
Long term cooling "B" (once through steam generator-B)
RCS Pressure Control Mode:
Standby Pressure Control (SPC) System.
Backup Pressure Control Modes: Mini Decay Heat Removal (MDHR) System.
Decay Heat Removal (DHR) System.
Major Parameters (as of 0500, July 23,1981) (approximate values)
Average Incore Thermocouples: 120 F Maximum Incore Therniocouple:
143 F RCS Loop Temperatures:
A B
Hot Leg 120 F 122 F Cold Leg (1) 73 F 75 F (2) 74 F 75 F RCS Pressure:
92 psig Reactor Building:
Temperature: 76 F Water level:
Elevation 290.9 ft. (8.4 ft. from floor) via penetration 401 manometer Pressure:
-0.15 psig Concentration: 4.6 x 10-6 (LLD) uCi/ml Kr-85 (Sample taken 7/23/81)
Effluent and Environmental (Radiological) Information 1.
Liquid effluents from the TMI site released to the Susquehanna River after processing, were made within the regulatory limits and in accordance with NRC requirements and City of Lancaster Agreement dated February 27, 1980.
During the period July 17, 1981, through Julj 23, 1981, the effluents contained no detectable radioactivity at the c:ischarge point although individual effluent sources which originated 91 thin Unit 2 contained minute amounts of radioactivity.
Calculat4ns indicate that less than 1 millionth (0.000001) of a curie of Cs-137 was discharged.
This represents less than 0.00001% of ',ne permissable total liquid activity as specified in Technical Specifications for operational commercial reactors.
Calculations also indicate that less than 1 tenth (0.1) of a Ci of Tritium (H-3) was discharged.
9 2.
Environmental Protection Agency (EPA) Environmental Data.
Resul ts from EPA monitoring of the environment around the TMI site were as follows:
3 The EPA measured Kr-85 concentrations (pci/m ) at several environmental monitoring stations and reported the following results :
Location June 26 - July 3,1981 3
(pCi/m )
Goldsboro 26 Observation Center 27 Middietown 28 Yorkhaven 28 All of the above levels of Kr-85 are considered to be back-ground levels.
No radiation above normally occurring background levels was detected in any of the samples collected from the EPA's air and gamma rate networks during the period from July 16, 1981, through July 23, 1981.
3.
NRC Environmental Data.
Results from NRC monitoring of the environ-ment around the TMI site were as follows:
The following are the NRC air sample analytical results for the onsite continuous air sampler:
I-131 Cs-137 Sample Period (uCi/cc)
(uCi/cc) i HP-277 July 15,1981 - July 22,1981
<8. 6 E-14 <8.6 E-14 4.
Licensee Radioactive Material and Radwaste Shipments.
On Monday, July 20,1981, a 40 ml Unit 2 reactor coolant l
sample was sent to Babcock and Wilcox (B&W), Lynchburg, Virginia.
On Friday, July 24, 1981, two Hittman steel liners containing Unit I solidified evaporator bottoms were shipped to U.S. Ecology, Richland, Washington.
Major Activities 1.
Submerged Demineralizer System (SDS).
Processing of the first batch (approximately 50,000 gallons) of intermediate radioactivity level water from the Auxiliary Building Reactor Coolant Bleed Tank (RCBT) was ccmpleted on July 19, 1981.
Preliminary results indicate that the first batch resulted in a loading of approximately 320 curies of Cs-137 and 160 curies of Sr-90 on the first ion exchange vessel.
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l This represents greater than 99% removal of these radioactive materials from the process stream.
Processing of the second batch (approximately 50,000 gallons) of RCBT water commenced on July 23, 1981.
After the RCBT water is processed, the SDS will be used to process high level Reactor Building sump water.
2.
Reactor Buidling Entry.
Four teams, a total of nine people, entered the Unit 2 Reactor Building during entry number fourteen (designation change) on July 23, 1981.
Team four included the first woman into the Reactor Building since beginning the Reactor Building entries last year.
The following tasks were successfully completed.
Maintenance of the closed circuit TV system Removal of the Core Flood Tank "B" Transducers Photographs of air cooler equipment and components of the reactor fluid make-up system Radiation survey of the shallow end of the refueling pool-Miscellaneous sample collection Installation of two radiation area monitors 3.
EPICOR-II second and Third Stage Liners.
On June 30,1981, the last two (of twenty-two) second and third stage EPIC 0R-II liners reached the burial site in Hanford, Washington, as reported in the Weekly Status Report for the week of June 28 through July 5,1981.
These liners were generated during the processing of contaminated water through the EPICOR-II system.
The EPICOR-II system was used to process Auxiliary Building water (approximately 500,000 gallons) from the March 28, 1979 accident.
Regional inspectors from the U.S. Nuclear Regulatory Commission's Region V office in~ Walnut Creek, California, have visited the Hanford burial site for inspection purposes.
The inspectors have concluded, based on physical verification of the burial of the 22 liners, and proper documentation, that all applicable burial site criteria were satisfied for the TMI wastes.
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