ML19343C710
| ML19343C710 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/16/1981 |
| From: | Barrett L Office of Nuclear Reactor Regulation |
| To: | Harold Denton, Snyder B Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19343C711 | List: |
| References | |
| CON-NRC-TMI-81-020, CON-NRC-TMI-81-20 NUDOCS 8103250105 | |
| Download: ML19343C710 (5) | |
Text
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S('.%.e8 March 16,1981 c
NRC/TMI-81 -020 MEMORANDUM FOR:
Harold R. Denton, Director, Office of Nuclear Reactor Regulation Bernard J. Snyder, Program Director, 5
TMI Program Office FROM:
Lake H. Barrett, Acting Deputy Program Director, TMI Program Office
SUBJECT:
NRC TMI. PROGRAM 0FFICE WEEKLY STATUS REPORT Enclosed is the status report for the period of March 8-14, 1981.
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. Lake H. Barrett Acting Deputy Program Director TMI Program Office
Enclosure:
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NRC TMI PROGRAM 0FFICE WEEKLY STATUS REPORT Week of March 8-14, 1981 Plant Status Core Cooling Mode:
Heat transfer from the reactor coolant system (RCS) loops to reactor building ambient.
Available Core Cooling Modes:
Long-term cooling "B" (once through steam generator-B); decay heat removal systems.
l RCS Pressure Control Mode: Standby Pressure Control (SPC) System.
Backup Pressure Control Mode: Mini Dechy Heat Removal (MDHR) System.
Major Parameters (as of 0500, March 13,1981) (approximate values)
Average Incore Thermocouples: 120 F Maximum Incore Thermocouple:
150 F RCS Loop Temperatures:
A B
Hot Leg 116 F 119 F Cold Leg ((1) 67 F 67 F 2) 66 F 66 F RCS Pressure:
99 psig Reactor Building:
Temperature: 61 F Water level:
Elevation 290.6 ft. (8.1 ft. from floor) via penetration 401 manometer Pressure:
-0.4 psig Concentration: 1.15 x 10-4 uCi/cc (Kr-85)
(sample taken 3/9/81)
Effluent and Environmental (Radiological) Information t
1.
Liquid effluents from the TMI site released to the Susquehanna River af ter processing, were made within the regulatory limits and in accordance with HRC requirements and City of Lancaster Agreement dated February 27, 1980.
During the period March 6,1981, through March 12,1981, the effluents contained. no detectable radioactivity at the discharge point although individual effluent sources which originated within Unit 2 contained minute amounts of activity.
Calculations indicate i
i that less than one-millionth (0.000001) of a curie of cesium-137 j
(CS-137) was discharged This represents less than 0.00001% of the permissable i
total liquid activity as specified in Technical Specifications for l
operational commercial reactors.
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2 2.
EPA Environmental Data.
Results from EPA monitoring of the environment around the TM1 site were as follows:
I The EPA measured Krypton-85 (Kr-85) concentrations (pCi/m ) at 3
several environmental monitoring stations and reported the following results:
Location February 27 - March 6,1981 3
(pCi/m }
Bainbridge 25 Goldsboro 22 Observation Center 24 Middletown i
32 All of the above levels of Kr-85 are considered to be back-ground levels.
Ho 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 March 2,1981, through March 12, 1981.
3.
NRC Environmental Data..Results from NRC monitoring of the environment around the TMI site were as follows:
The' following are the NRC air sample ' analytical results for the onsite_ continuous air sampler:
1-131 Cs-137 Sample Period (uCi/cc)_ (uCi/cc)
HP-258 March 4,1981 - March 11,1981 8.3 E-14 <8.3 E-14 4.
! Licensee Radioactive Material and Radwaste Shipments.
The following shipments were made:
On Monday, March 9,1981, a 40 ml Unit 2 reactor coolant sample was sent to Babcock and Wilcox-(B&W),-Lynchburg, Virginia.
i-On Wednesday, March 11, 1981, a shielded drum containing assorted materials; e.g., nylon rope, signs, telephone, etc.,
from the Unit 2 Reactor. Building was sent to EG&G, Idaho Falls, Idaho.
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3 Major Events 1.
Reactor Building Entry.
The seventh reactor building entry is currently scheduled for March 17, 1981, and March 19, 1981. The q
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major item scheduled for the entry is obtaining a sample of sump water after the water has passed through a zeolite resin column.
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.. inated Building Expansion Joint.
The licensee has taken i;
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'J water-level readings since t.he installation of the water-I silevel monitor in the expansion joint in the basement of the control i
building.
f The readings indicate that the water level is approximately 9 inches
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below the basement floor (281 ft. elevation), with a slight daily variation that, to date, does not,show any trend.
't Contaminated Rodent Feces in the Unit 2 Control and Service 3.
The licensee issued a press release on February 27, 1981, Building.
concerning the identification of contuminated rodent feces discovered during routine surveys of the Unit 2 Control and Service Building.
Rodent feces, however, have To date no rodents have been trapped.
been found which are contaminated with small amounts of cesium-137 (less than one microcurie, one one-millionth of a curie).
The licensee called in an exterminator and poison and traps are in The contamination appears localized to small portions of place.
the licensee's protected area.
On March 10, 1981, the licensee discovered small amounts of contam-ination and rodent feces outside of the missile door (inside the This area had been contaminated during the protected area).
An accident and accessible areas have since been decontaminated.
10, 1981, indicated analysis of top soil taken from the area on Marchsmall amounts o Analysis of a water sample from the area, after a recent Cs-137).
rain, showed Cs-137 in trace amounts of 2.1 E-7 microcurie per l
There was no evidence that contamination was being milliliter.
It is not spread outside beyond the vicinity of the missile door.
It is clear at this time as to the source of this contamination.
possible that mice may have tracked the contamination to outside E
It is also possible that recent heavy rains may i
the missle door.
l have washed the contamination out from inaccessible areas that were not decontaminated after the accident.
Attached to this week's Status Report are copies of correspondence 4.
transmitted by the Citizens Advisory Panel, which was established last fall to provide advice to the Comission on cleanup activities at TMI Unit 2.
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4 Meeting Held On Tuesday, March 10, 1981, Lake Barrett met with a group of Middletown mothers to discuss various TMI issues.
They expressed their concern over possible startup of Unit 1, apparent slow progress of Unit 2 cleanup, reports of contaminated rodents and lack of urgency towards resolution of ultimate disposal of Unit 2 cleanup wastes.
Future Meetings 1.
On Tuesday, March 24, 1981, Lake Barrett will meet with area mothers to discuss various issues related to the decontamination of TMI Unit 2.
't 2.
On Tuesday, March 24, 1981, Harold Denton and Lake Barrett will attend a meeting of the American Society of Zoological Park Managers in Hershey.
3.
On Friday, March 20, 1981, Lake Barrett and Ronald Bellamy will meet with a group of university professors from City College of New York to discuss cleanup of the Reactor Building sump water.
4.
On Monday, March 16, 1981, the Citizens Advisory Panel will meet with the NRC Coranissioners to discuss various issues related to the cleanup process of TMI Unit 2.
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