ML19317H368
| ML19317H368 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/27/1980 |
| From: | PORTER CONSULTANTS, INC. |
| To: | |
| Shared Package | |
| ML19317H367 | List: |
| References | |
| NUDOCS 8006020303 | |
| Download: ML19317H368 (8) | |
Text
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..c y,(i Porter Gcrtz C:nsultant2. he.
76 RSTTENHouSE PLACE A n o Mo R E, P A.19003 215 496 5353 FROM:
Sydney W. Porter, Jr., C.H.P.
SUBJECT:
Explanation of the TMI Effluent Assessment Group Monthly Summary
.a)
General Reference is made to the Executive Su= mary entitled "TMI Units I and II Liquid and Gaseous Releases".
For purposes of comparison, all previous 1980 releases are included in this report. All data is given in monthly increments with quarterly averages or totals as applicable.
1)
Liquid Releases Line (a) gives all liquid releases except Tritium.
Since Tritium cannot be effectively removed from liquids, it needs to be separated out so that is can be carefully watched. Tritium may very well be the critical radionuclide for liquid releases during the entire recovery process as well as during normal plant operations. Present Tech Specs for discharge of liquids, excluding Tritium and Noble Gases, is 10 Ci per reactor in any quarter year.
Line (b) separated the Iodine-131 released since it was the major radionuclide released during the early days of the accident and it will be found periodically in downstream drinking water supplies because of the periodic discharge from hospitals using Iodine-131.
The 10CFR20 allowable Iodine-131 release rate is 3x10-7pci/cc and the EPA drinking water standard is 3x10-'pci/cc (as averaged over one year).
Line (c) utilizes units of pCi/cc for Tritium so that the release concentrations can be compared to the 10CFR20 limits of 3x10-8pci/ce.
Note that the EPA drinking water standard is 2x10-spC1/cc (as averaged over one year).
2)
Airborne Iodine releases are separated out because of the fact that radioiodines are potentially the largest hazard from a serious reactor accident. The units pCi/sec. are used so that the radioiodine releases can be compared to the Tech Spec quarterly release limits of 0.024 pCi/sec.
3)
Noble Gas releases are listed in Ci/sec. averaged over the quarter so that they can be compared to 0.0072 Ci/sec. Tech Spec limits.
The tables appended to the Executive Sumtary give all the specific technical data which is summarized in the Executive Swnmary.
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SWP/sa M '" W,s
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Sydney W. Porter, -Jr![ C.H.P.
Head, Effluent and Dose Assessment-84060203c">
EXEC 1rrIVE
SUMMARY
TilREE MILE ISLAND UNITS I ~and II LIQUID and CASEOUS RELEASES Quarterly. Totals 1/1/80 to 2/1/80 to 3/1/80 to 1/1/80 to DISCilARGE PATHWAYS 1/31/80 2/29/80 3/31/80 3/31/80 1.
. Liquid Released:
a) Discharged less Tritium
-1)
Concentration (UCi/cc) 2.33E-9 4.90E-9 2.31E-9 3.12E-9
- 2) Total Activity.(Ci) 1.84E-2 3.24E-2 1.62E-2 6.70E-2 b) Iodine-131-Released
- 1) Concentration (PCi/cc)
<LLD
<LLD
<LLD
<LLD i
- 2) Total Activity (C1)
<LLD
<LLD
<LLD
<LLD c) Tritium Released
- 1) Concentration (pCi/cc) 7.81E-7 1.31E-6**
8.33E-7 9.61E-7
- 2) _ Total Activity 6.17E0 8.65E0**
5.85E0 2.07El d) MDCT Flow for Month (cc) 7.90E12 6.61E12 7.02E12 2.15E13 II.
Airborne Iodine Released a) Quarterly Release Rate (UCi/sec)
<LLD
<LLD
<LLD
<LLD b) Total Iodine-131 released (C1)
<LLD
<LLD
<LLD
<LLD III.
Noble Gases Released:'
a)' Quarterly Release Rate.(Ci/sec) 8.63E-6 8.68E-6 8.04E-6 2.52E-5 b) Total Noble Cases released (C1) 68*
68*
63 199 (Kr-85 is only gas identified by y spectroscopy)
- January and February gas releases were changed (slightly lower than originally published Ci amounts) to reflect a more accurate method of computation of total flow. These numbers were obtained by adding hourly readings of AM-5 cpm and integrating with flow data which is read every four hours.
1
- Re-calculated using method described by note on bottom of Table (4).
I
TABLE (1)
LIQUID RADIONUCLIDE DISC 11ARGE By Isott.pe First Quarter 1/1/80-1/31/80 2/1/80-2/29/80 3/1/80-3/31/80 1/1/80-3/31/80 Activity Activity Activity Activity RADIONUCLIDE (C1)
(C1)
(C1)
(Ci) 11 - 3 6.17E0 8.65E0 5.85E0 2.07El P-32 1.52E-4 1.52E-4 Mn-54 1.66E-4 9.84E-5 2.64E-4 Co-58 9.76E-5 2.77E-4 6.77E-5 4.42E-4 Co-60 7.98E-4 6.71E-4 1.42E-3 2.89E-3 Sr-89 1.43E-4 9.55E-3 3.16E-5 9.72E-3 Sr-90 4.3E-3 9.55E-3 2.88E-3 1.67 E-2 Ag-110m 2.04E-5 7.54E-4 7.74E-4 I-131 Cs-134 2.51E-3 2.33E-3 2.19E-3 7.03E-3 Cs-137 1.04E-2 9.86E-3 8.74E-3 2.90E-2 Totals less 11-3 1.84E-2 3.24E-2 1.62E-2 6.70E-2 Effluent = 2.53E-3 Ci 4.00E-4 Ci 2.93E-3 Ci Influent = 2.69E-3 C1 4.05E-4 Ci 3.10E-3 Ci Therefore, there is no net release of Iodine-131 from TMI (1) Re-calculated using method described by note on bottom of Table (4)
I
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TABLE - (2)
SUMMARY
bF LIQUID VOLUME DISCHARGES-1980 (CALLONS) 1st Quarter 1/1/80-1/31/80 2/1/80-2/29/80 3/1/80-3/31/80 1/1/80-3/31/80 IWIS 737,250 652,000 912,550 2,301,800 IWFS 237,390 222,000 305,730 765,120 WECST (A&B) 55,522 114,735 88,642 258,899
~ Unit I SEC. NEttr.
424,500 292,056 118,011 834,567 MDCT.= TOTAL - (IWTS + IWFS + WECST -(A6B) + UNIT I SEC. NEITr.)
TOTALS 2,087,600,000 1,744,900,000 1,853,400,000 5,685,900,000
TABLE (3)
SUSQUEHANNA RIVER FLOW RATES-1980*
1st Quarter January 2.37E4 cfs or 1.42E6 cfm February 1.25E4 cfs or 7.54E5 cfm March-6.38E4 cfs or 3.83E6 cfm Average 3.33E4 cfs or 2.00E6 cfm 2nd Quarter April May June Average 3rd Quarter July August September
~~
Average 4th Quarter October November.
December Average.
- Estimate by U.S. Geological' Survey e
... ~~-.
TABLE (4)
THI LIQUID TRIT!UM DISCHARCE FOR-1980
- '. ~
UNIT I UNIT !!
UNITS 1 and 11 WECST - TANK 11A and !!8 IWFS.
WETT - TAHK 10S! COMPOSITE Total IWTS, and 9A and 95 Dischstged Volume Sum of Each Sec.
HEUT. TEST TANK Sample To River D!acharged Composite Sample Release Neut.
8A and 88 Volume --
Date For Month cc x 10' PCi/cc C1 C1 C1 C1 cc p C1/cc C1 C1 No Release Siner 12/31/79 to
' January 2.10 1.60E-2 3.36 3.91
<!. 26 E-2 3/28/79 7.9E12 6.lE-7 4.82E0 1/31/80 6.17*
Februa ry 4.34 1.23E-2 5.34 7.07 6.6E12 1.IIE-6 7.33E0 2/1/80 to 2/29/80 8.65 e March 3.33 1.19E-2 3.96 4.46 4
)j3f0 7.0E12 5.8E-7 4.07E0
.85 * -
80 April e
M:y Juma July B
lArguit 8
SJptember 4
Octtbst i
,' Nivtaber Decsmber
- Calculated using plant effluent data and batch release data. The higher daily figurs la used, then summed. for the month.
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TABLE (5)
THI LIQUID RADIOSTRONTIUM DISCllARGE FOR -1980 UNIT I UNIT II WECST - Composite Tank llA & 118 WETT - Composite Tank 9A & 95 NEUT. TEST TANK 8A & 8B Tank Volume Tank Volume Tank Volume
~
Discharged Sr-89 Sr-90 Discharged Sr-89 Sr-90 Discharged Sr-89 Sr-90 cc x 10' pC1/cc Ci uct/cc C1 cc x 10' pC1/cc Ci pC1/cc C1 cc x 10' pC1/cc C1 pC1/cc C1 J:nua ry 2.10-6.BE-7 1.43E-4 4.7E-7 9.87E-5 No lig.1d release from Unit Il since the accident t f Harch 28, 1979 Fsbruary 4.34 2,.2E-5 9.55E-3 2.2E-5 9.55E-3 Harch 3.33 "
- 9. 5 E-8 3.16E-5 1.5E-7 5.00E-5 April Hay June July August Srptember October November December 1
I
6,.
TABLE (5) cont.
THI LIQUID RADIOSTR0!(TIUM DISCnARCE FOR-1980
=
UNIT I and II Honthly Composite - 1051 (also known as RML-7)
Total Ci for the Month Volume.
Sample Sr-89 +
Disclarged Dates Sr-89 Sr-90
$r-89 St-90 Sr-90 sa cculo pC1/cc Ci pC1/cc C1 C1 C1 Ci 12/31/79-JI uarY 7.9 1/31/80
<2E-9 5.5E-10 4.3E-3 1.43E-4 4.3E-3 4.4E-3 Fabruary 6.6-8
<2E-9
<5E-10 9.55E-3 9.55E-3 1.91E-2 g
2/29/80 y*o
<1E-9 4.lE-10 2.88E-3 3.16E-5 2.88E-3 2.91E-3' 3/31/80 April HEY Jute July Argult SIptsaber
.Octzber November DIcember
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