ML20049J131
| ML20049J131 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/01/1982 |
| From: | Barrett L Office of Nuclear Reactor Regulation |
| To: | Harold Denton, Snyder B Office of Nuclear Reactor Regulation |
| References | |
| CON-NRC-TMI-82-011, CON-NRC-TMI-82-11 NUDOCS 8203120124 | |
| Download: ML20049J131 (16) | |
Text
.
l DISTRIBUTION TMIPO HQ r/f TMI SITE r/f
!! arch 1,1982 LOCAL PDR NRC/TMI-82-Oll Site Operations File y320 ilD10RANDUlf FOR:
Harold R. Denton, Director Office of fiuclear Reactor Regulation Bernard J. Snyder, Program Director Tt!I Program Office FRO ll:
Lake H. Barrett, Deputy Program Director l}ll Program Office
SUBJECT:
NRC Till PROGRAM 0FFICE WEEKLY STATUS REPORT Enclosed is the status report for the period of February 21,1982 to February 27, 1932. Itajor items included in this report are:
Liquid Effluent Releases NRC and EPA Environmental Data m
4 Radioactive Material and Radwaste Shipments D
Till Occupational Exposure gigcF,NED 9-
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Submerged Domineralizer System Status MAR 0 419823*'
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qimmat asynwsama astnesnous sin EPICOR II r4 f
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Ground Water Samples 4
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Peactor Building Entries Apparent Oxygen Deficiency and Combustible Gas Indications in Reactor Du11 ding Public Meetings Mataals%
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f Lake 11. Barrett Deputy Program Director TMI Program Office
Enclosure:
As stated o" " >.............
su m u k 8203120124 820301 PDR ADOCK 05000320 R
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unc,onu sis < 50-8o sncu 024o OFFICIAL RECORD COPY
liarold R. Denton March 1,1982 Bernard J. Snyder cc w/enci:
EDO OGC Office Directors Comissioner's Technical Assistants liRR Division Directors ilRR A/D's Regional Directors IE Division Directors TAS EIS Till Program Office Staff (15)
PilS EPA DOE Projects Br. #2 Chief, DRPI, RI DRPI Chief, RI Public Affairs, RI State Liaison, RI TMI TMTP0 TRIPO /
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NRC FOT;M 318 (10-80) NRCM O240 OFFICIAL RECORD COPY j
NRC TMI PROGRAM 0FFlCE WEEKLY ST/.TUS REPORT February 21, 1982 - February 27, 1982 Plant Status _
Core Cooling Mode: Heat transfer from the reactor coolant system (RCS) lorsps 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 0620, February 26,1982) (approximate values)
Average Incore Thermocouples : 103*F Maximum Incore Thermocouple :
133*F RCS Loop Temperatures:
A B
Hot Leg 96*F 99 F Cold Leg (1) 83*F 80 F (2) 90*F 83*F RCS Pressure: 96 psig Reactor Building: Temperature :
64*F Water level :
Elevation 283.5 ft. (1.0 ft. from floor)
Pressure:
-0.17ps i g Airborne Radionuclide Concentrations :
4.8 E-6 uCi/cc H3 (sample taken 2/24/82) 4.2 E-6 uti/cc Kr85 (sample taken 2/22/82)
Effluent and Environmen_tal (Radiological) Information 1.
Liquid effluents from the TMI site released to the Susquehanna River after processing, were made within the regulato y limits and in accordance with NRC requirements and City of Lancaster Agreement dated February 27, 1980.
During the period February 19,1982,. through February 25,1982, the effluents contained no detectable radioactivity at the discharge t
i point although individual effluent sources which originated within Unit 2 contained minute amounts of radioactivity.
Calculations indicate that less than one millionth (0.000001) of a curie of cesium was discharged.
The effluent discharge for the week of February 5,1982, through February 10, 1982, contained in addition to the cesium previously reported, less than two millionths (0.000002) i of a curie of tritium.
l
. 2 Environmental Protection Agency (EPA) Environmental Data.
Results from EPA monitoring of the environment around the TML site were as follows:
3 The EPA measured Kr-85 concentrations (pCi/m ) at several environmental monitoring stations and reported the following results :
Location _
January 11 - February 5,1982 (pC1/m3)
Goldsboro 24 Observation Center 30 Middletown 28 Yorkhaven 23 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 February 17, 1982, through February 25, 1982.
On February 26, 1982, the EPA published a preliminary status report on the ongoing tritium (H-3) study in the TMI area.
The EPA is sampling for H-3 in air at three sampling locations near TMI (TMI Observation Center, Goldsboro and Middletown) and a control location at Wernersville, PA (35 miles northeast of Middletown).
The environmental air H-3 is associated with the air moisture and is incorporated in water as part of the water molecule (HTO, T20, H2O with "T" indicating the tritium nuclide).
The EPA is using a sophisticated and sensitive analytical method to provide for adequate detection of slight increases in the de minimus (extremely low) levels of H-3 in the atmosphere with a lower limit of detection (LLD) of 0.5 pCi/ml of air moisture.
This LLD of H-3 in moisture would equate to average values of about 6-8 pCi/m3 of air.
All samples collected near TMI indicated H-3 air concentrations of values less than the lower limit for detection or values comparable to the control location at Wernersville.
During November and December 1981 and January 1982, a few samples at the Observation Center indicated an apparent slight increase in H-3 concentrations (see attached EPA Press Release).
In comparison to the 10 CFR 20 limit of 200,000 pCi/m3 these detected concentrations are at least 10,000 times lower than this limit.
The EPA will continue to collect and analyze additional air samples.
I
3-3.
NRC Environmental Data.
Results from NRC monitoring of the environment around the TM1 site were as follows:
The following are the NRC air sample analytical results for the onsite continuous air sampler:
I-1 31 Cs-137 Sample Period (uCi/cc)_ (uCi/cc)
HP-308 February 18, 1982 - February 24, 1982
<2.9 E-14 <2.9 E-14 4
1.icensee Radioactive Material and Radwaste Shipments.
On Monday, February 22, 1982, six drums of compacted trash and six metal containers of noncompacted trash from Unit 1 were shipped to Chem-Nuclear Systems, Inc., Barnwell, South Carolina.
On Monday, February 22,1982, a 250 mi sample (Unit i decay heat "A") was mailed to the Radiation Management Corp. Laboratory, Philadelphia, Pennsylvania.
On Wednesday, February 24, 1982, one drum containing 14 samples from Unit II SDS was shipped to the Oak Ridge National Laboratory, Oak Ridge, Tennessee.
5 TMI Occupational Exposure.
Licensee TLD (Thermoluminescent Dosimeter) records indicate the following Unit II total occupational radiation exposure for January 1982 : 17 man-rem.
(This is a corrected number. The number reported in the Weekly Status Report dated February 22, 1982, was in error.)
Major Activities 1.
Submerged Demineralizer System (SDS).
Processing of batch 21 was completed on February 27, 1982, and its performance parameters are enclosed as Attachment 1.
Transfer of batch 22 commenced on February 27, 1982, and was terminated on February 28,1982, when the pump used to transfer water from the reactor building lost suction, as expected, with approximately six inches of water (36,000 gallons) remaining.
Approximately 600,000 gallons of water have been removed from the reactor building.
2.
EPICOR II.
The EPICOR II system continued to process SDS effluents during the week.
Performance parameters are included in Attachment 1.
3.
Ground Water Samples.
Tritium concentrations in the ground water have remained in essentially the same range as reported in previous l
Weekly Status Reports. contains a sketch of the test l
boring locations with the latest tritium concentrations.
Cesium 137 concentrations slightly above the lower limit of detection were reported in the Weekly Status Report last week. Water samples taken after February 11,1982, indicate that cesium 137 and all isotopes except tritium are below the lower limit of detection.
t 4-4.
Reactor Building Entries.
Three reactor b'uildind (RB) entrips were 3
scheduled during the week of February 21, 1982.
The first entry was cancelled when an air sample indicated that the tritium concentration in RB air was above the maximun permissible concentration (MPC).
However, workers were able to complete most of the tasks scheduled for the week during entries on Thursday and Friday (February 25 and February 26,1982).
The installation of systems necessary for the gross decontamination experiment was' completed and it is expected that the gross decontamination experiment will commence during the first week in March.
A low pressure flush df'the floor surfaces of'the 305 ft elevation is scheduled for Tbesday, March 2,1982.
On a' subsequent entry,e the polar crana.will be flushed with low pressure water.
On the third entry of the gross decontamination experiment, also scheduled for next week, it is anticipated that the "D" ring surfaces and the refueling pool will be decontaminated.
5.
Apparent' 0xygen Deficiency And Compustible Gas Indications in the Reactor Building.
Prior to the start of scheduled tasks inside the reactor building this week, a'special entry was made on Wednesday, February 24, 1982, to verify th:t there was sufficient oxygen and no combustible gases inside the reactor building.
The analysis of the reactor building air during the previous week indicated the
. presence of combustible gases ~ and reduced oxygen concentrations. A subsequent investigation concluded that the combustible gas and depleted oxygen measurements were incorrect because of instrument
-interference, e.g. radio transmissions.
The special entry on Wednesday confirmed, through portable air analyzer readings and laboratory analysis of air samples, that the reactor building air conta,ined acceptable levels of approximately 20% oxygen and no combustible gases.
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Past Meetings On Monday, February 22, 1982, Lake Barrett met with a group of area mothers to discuss various TMI issues including, the Unusual Event of February 19, 1982, cleanup funding and Unit 1 steam generators.
They expressed their opinion that Unit 1 should not be restarted prior to the completion of the Unit 2 cleanup.
Future Meetings 1.
On Saturday, March 13, 1982, Lake BarretI will address the Society of Manufacturing Engineers in Williamsport, PA, on the cleanup of TMI and general aspects of nuclear power, 2.
On Wednesday, April 14, 1982, Lake Barrett will be the keynote speaker for the Southern Pennsylvania Association of Occupational Health Nurses, to be held at the Holiday Inn in York.
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ATTACHMENT 1 SDS Performance for Batch Number 21 Average Average Average Radionuclide Influent Effl uent DF (uc/ml)
(uc/ml)
Cesium 137 1.1 x 102 6.7 x 10-4 1.6 x 105 Strontium 90 4.4 6.0 x 10-3 7.3 x 102 EPICOR II Performance February 16,1982 to February 22, 1982 Average Average Average Radionuclide Infl uent Effluent DF (uc/ml)
(uc/ml )
Cesium 137 7.9 x 10-4 1.3 x 10-7 6.1 x 103 Strontium 90 5.6 x 10-3
<1.3 x 10-5
>4.3 x 102 Antimony 125 1.0 x 10-2
<3.4 x 10-7
>2.9 x 104
'ATTAC//MEAfY 2 l
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s February. 26, 1982 (KIRK)
(717) 782-3909 TMI RADIATION As a means of providing information to the public on the radi-MONITORING ation in6nitoring activities around Three Mile Islan51 (TMI), the Environmental Protection Agency (EPA) announces the'following ne-sults obtained from its monitoring networks..
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 February 17, 1982 through February -
25, 1982.
Because of the " unusual event" at TMI Unit II on Febru-ary 19 - 20, 1982, the prefilters and charcoal cartridges were col-1ected from EPA's 13 air monitoring stations on the morning of Feb-ruary 20 and analyzed that day.
All samples were negative for reactor-as'ociated garr.a radioactivity.
s Only background levels of krypton-85 were measured in air samples collected at noble gas sampling stations located in Golds-boro, Middletown, York Haven and TMI Observation-Center for the period January 11, 1982 through February 5, 1982.
A program for monitoring tritium in atinospheric moisture was announced in the March, 20, 1981 Environmental News. The initial data report for this program, including all data collected for 1981, is enclosed. The amount of tritium per cubic meter of air sampled was less than 1/10,000 (0.01%) of Federal limits in all cases.
Slight elevatiors in the concentration of tritium in the water collected from the air were noted in several samples from the TMI Observat' ion Center and Goldsboro samplers. The levels found appear to be generally consistent with the low level -
releases associated with pre-entry purging of the containment building.
EPA 147/02/26/82
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EPA 147/02/26 /82 Dab Date Average Range.
Iocation
- On
' ~Off * * (mre#hr) * '(mreWhr)
Ccrments N.
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Iondonderry Twp. Bldg.
02/17 02/19 0.011 0.008-0.,015 Normal Background 02/19 02/22 0.012 0.008-0.017 Normal Background
- 02/22 02/24 0.013.
0.008-0.019 Normal Background Iondonderry (Hershberger) 02/17 02/19 0.014 0.010-0.019 Normal Background 02/19 02/22 0.015 0.010-0.020 Normal Background 02/22 02/24 0.013 0.010-0.~020 Normal Background
'IMI Observation Center 02/17 02/19 0.012 0.007-0.017 Normal Background 02/19 02/22 0.013 0.008-0.019 Normal Background 02/22 02/24 0.013 0.007-0.020 Normal Background York Haven 02/18 02/20 0.009 0.006-0.012 Normal Background 02/20 02/23 0.009 0.006-0.013 Normal Background 02/23 02/25 0.009 0.006-0.012 Normal Ba,ckground 9...
E-AIR FONI'IORDG J;.
Radioactivity in airborne particles is detennined by passing air through a glass -
fiber filter and analyzing the filter. A charcoal cartridge that is highl'y efficient ir.-
in its collection of radiciodine is also used following each filter and analyzed to assure that no radiciodine is present in the air. The results of the analyses for
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th2sc samples collected at the sa.re locations and indicated sanpling periods as for the above recorders w.re all less than the mininun detectable concentration of EPA's analytical instrtrrents, 0.2 picocurie par cubic noter of air.
INITIAL REPORT - TRITIUM IN ATMOSPHERIC MOISTURE PROGRAM I
The Programmatic Environment Impact Statement (NUREG-0683)$forthe decontamination of Unit II identified tritium, as tritiated water vapor in air, as one of the dominant nuclides which may be released during' the cleanup.
Current releases result from purges of the reactor con-tainment building and froi evaporation from the spent fuel pool that contains and shields the SDS system. Accordingly, EPA located atmo-spheric moisture samplers at three locations near TMI (Observation Center, Goldsboro.and Middletown) and a control sampler at Werners-ville,:PA. The samplers remove the water vapor from a measured volume of air for a selected period - usually one:w~eek.
The collection vessel is then removed from the sampler and sent to the laboratory (presently in Las Vegas)where the collected water is analyzed for tritium content..
The resulting concentration (in picoeuries of tritium per milliliter of water) together with the original air sample volume and relative humidity is used.to calculate the concentration of tritium in air (pico-curies tritium per cubic meter of air).
Federal regulations limit the concentration of tritium in air to 5,000,000 l
PCi/m3 for occupational exposure and 200,000 pCi/m3 in the environment.
t The re'sults of tritium-in-atmospheric moisture monitoring from May 7, 1981 to January 7 and January 11, 1982 are given in Tables 1 and 2. Sample periods since November 13 have been lengthened because of a shortage in the custom-made glass collection vessels caused by breakage in shipment in October and November. New collectors have been received in Las Vegas and are now being placed in service so that the weekly collection period can be resumed.
The tritium in cir concentrations obtained at these sampling locations for the period of the report were all less than 1/10,000 (0.01%).
Few studies of tritium in atmospheric moisture have been reported; but, the levels of tritium in the collected water are generally expected to be similar to those found in precipitation, surface water, and drinking water in the same area. Higher levels are found sporadically even in the absence of identifiable local sources of tritium.
From the exten-sive precipitation, river water, and drinking water data, the " normal" range for the TMI area is estimated to be 0.1 - 0.6 pCi/ml. These levels have been decreasing since 1963 when tritium concentrations at various U.S. locations were in the 1.5 _- 14 pCi/ml range because of fallout from::
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nuclear weapons testing.
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Most samples reported here are within the estimated range. Several sam-pies from the TMI Observation Center and Goldsboro were a factor of 2 - 3 4_
higher as would be expected based on low level releases from TMI.
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(This report included in Environmental News release EPA 147/02/26/82)
EPA 147/02/26/82 KRYPIO:1-85 7bble gas sanplers are operated near 'IMI to nonitor kr-85, which also exists in the atncsph2re world-wide as a resn1t of nuclear weapons, testing, nuclear pw_r generating, fuel reprocessing and 'in very srall quantities frcrn natural sources..
Sanples collected in the vicinity of 'IMI frcrn April 1979, through June 28,19g0, slosed tackground levels to be less than 40 picocuries per cubic neter (pci/m ) of
' air.
The analytic re'sults for sanples collected duridg the period from January 11 through February 5, 1982 are' given below.
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Fc-85 Concentrat{on Location pci/m 24 Goldsboro Middletaan 28 York Raven 23
'IMI Observation Cente.r 30 O
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GA'OR RATE REX)RDER DATA EPA 147/02/26/82 TMI Environnental Ibnitoring Ga:mn rate recorders are used to nonitor for any increases in ganma radiation levels above the normal background caused by naturally occurring radioactivity. The follcming table su:marizes the neasurenents made for each recorder location and indicated period. The neasurencnts, reported in millirems per hour (mreWhr), are all attributed to naturally occurring radioactivity.
Date Date Average Range Iocation On Off (mreWhr)
(mreWhr)
Ccaments 02/17 02/19 0.010 0.008-0.013 Normal Background Falnouth (Brooks) 02/19 02/22 0.010 0.008-0.012 Normal Background 02/22 02/24 0.010 0.008-0.013 Normal Background Falnouth (Libhart) 02/17 02/19 0.017 0.010-0.024 Normal Background 02/19 02/22 0.016 0.011-0.025 Normal Background 02/22 02/24 0.018 0.011-0.025 Normal Background Goldsboro (Miller) 02/18 02/20 0.015 0.010-0.020 Normal Background 02/20 02/23 0.015 0.010-0.020 Normal Background 02/23 02/25 0.015 0.010-0.020 Normal Background Harrisburg Int'l Airport 02/18 02/20 0.015 0.010-0.020 Normal Background 02/20 02/23 0.015 0.010-0.020 Normal Background 02/23 02/25 0.015 0.010-0.020 Normal Background Middletcun 02/18 02/20 0.011 0.007-0.015 Normal Background 02/20 02/23 0.012 0.008,0,016 Normal Background 02/23 Oj!/25 0.011 0.007-0.015 Normal Background Newterrytcun 02/18 02/20 0.016 0.013-0.020 Normal Background' 02 20 02/23 0.017 0.014-0.021 Normal Background 02 23 02/25 0.017 0.013-0.021 Nomal Background Newille 02/17 02/19 0.010 0.007-0.013 Nomal Background 02/19 02/22 0.011 0.007-0.014 Normal Background 02/22 02/24 0.011 0.008-0.014 Normal Background Plainfield 02/18 02/20 EQUIPMENT MALFUNCTION 02/20 02/22 0.011 0.008-0.015 Nomal Background 02/23 02/25 0.012 0.008-0.017 Normal Backgoround Pleasant Grove 02/18 02/20 0.009 0.006-0.012 Nomal Background 02/20 02/23 0.010 0.006-0.014 Nomal Background 02/23 02/25 0.009 0.006-0.012 Normal Background-I-%
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e TAPLE 1 TMI AREA STATIONS TNI observation Niddletown Coldsboro Conc. of Conc. of Cone. of Cone..of Conc. of Conc. of Tritium in Tritium in Tritium in Tritium in Tritium in Tritium in Collected
. Air Collected Air Collected Air Vater "ater
~ L'a t e r Dates _
pCi/mi la pC1/m3 1,2 pCi/mi 1 pC1/m 1.
pCi/ml - pCi/mk 1.
I 1
05/07-05/15 -
Not operational Not Operational 1.30 i.33 9.9 2.6 05/15-05/22 Not Operational Not Operational
.62 i*.32 1
2.2 1.1 05/22-05/29 Not Operational Not 0perational
<.49
( 6.5 05/29-06/05
<.45
< 5.1
<.45
< 6.2
<.45
. 5.4 06/05-06/12
< 45
.<4.6
.56 i.'28 8.91 4.5 <.45
< 5.4 06/12-06/19
<.47
< 7.1 c.47
< 11
< 47
<8 06/19-06/26
<.47
<5.9
<.47
< 11
< 47
< 7.8 06/26-07/03
-<.37
< 5.3
<.37
< 5.4
<.37
< 4.8
<.37
< 7. 0
<.37
< 6.2
<.37
< 7.3 07/03-Oh/10 07/10-07/24
< 46
<4.8
<.46
< 7.3
< 46
< 6.4 07/24-07/31
<.52
<6.7
<.52
< 9.4
.66i.33 Ili 5.7 07/31-08/07
< 49
<5.5
<.49
< 7.2
< 49
< 5. 8
~." C.
08/07-08/14
< 42
<7.3
<.42
< 9.9
<.42
< 7/1 f.-,<
08/14-08/21
<.50
<6.5
<.50
< 8.7
<.50
<4.9
.53
.28 4.3! 2.3
<.44
< 4.2
.54i.28 81 4.2 08/21-08/28 08/28-09/04
< 41
<6.1
<.41
< 6.8
<.41
< 5.7 09/04-09/18
<.41
< 5.5
<.41
< 6.2
<.41
<3.3 09/18-09/25
.632.27 7.3 3.1
<.41
< 4.6
<.41
<4.9 09/25-10/05
.54i.29 2.7i 1.6 42 2.25 4.7i2.9 < 40
<2.7 10/05-10/12
< 44
<3.0
<.44
< 2.7
<.44
<4.4 Eroien in Shirment
<.30
< 2.0
<.30
<1.4 10/12-10/23 Broken in Shipment Broken in Shipment
<.38
<3.3 10/23-10/30 45 i.25 4.012.2 Broken in Shipment
<.38
<3.0 10/30-11/.0,6 C
.64 i.27 5.4 i2.2
<.46
< 3.1
<.41
<2.8 l
11/06-11/13 i
1.5 i.29 8.71 1.7
.38 i.24 1.6 11.0 <.38
<1.3 11/13-12/-04 1.4 1.28 2.3 i
.5
<.41
< 1.2
<.41
<1.8 l
12/04-12/21 1.1 1.28
.5 i 3. 3 <.43
< 1.5
<.43
<1.1 j
12/21-01/11/82 i
statistically sitnificant salues are given i 2 standard deviations of the rean for 1.
I the detereiration. The symbol "<" denotes the true value is less than the val.e given.
The volume of air san.ple used to calculate the ceneentration *>f tritium in air at the 2.
TMI C1scrvatten Center is e stir.ated f rom sa pling time and pre-operational calibrations of flev rate tecause the sampler dry tas exter was not functieriing properly. Tbc crror from this seuice is of the order of 2202.
TABLE 2 Wernersville, PA Background Station -
s Concentration of
.e Conc. of Tritium in Tritium in Air Collected water pCi/m pCi/mi Dates o
<< 7.3
<.41 09/10-09/17
< 2.3
<.41 07/17-09/24
< 1.4
<.41 09/24-10/05
< 3.0
<.44 10/05-10/12 1.3
.7
.36
.19 10/12-10/21 Broken in Shipment 10/21-10/29 1.3 t
.8
.40
.24 10/29-11/05
< 1.3
<.46 11/05-11/16
< 1.0
<.38 11/16-12/03
< 7.8
<.41 12/03-12/18
< 7.9
<.43 12/18-01/07/82 em eusse e e ememe -
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