ML20058F530
| ML20058F530 | |
| Person / Time | |
|---|---|
| Issue date: | 04/28/1982 |
| From: | Roles G NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Rich Smith NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| FRN-46FR38081, REF-WM-4, RULE-PR-61 NUDOCS 8207300553 | |
| Download: ML20058F530 (4) | |
Text
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DISTRIBUTION NMSS r/f APR 2 8 4992 WM r/f yf pit. Sto d
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M" t
202/GWR/82/04/20/0 GWRol es fS*~ $ RDSmith REBrowning JBMartin
[d. dNob f)M N PHLohaus WMLL: 202 PDR g73_5J MEMORANDUM FOR:
R. Dale Smith, Chief Low-Level Waste Lichnsing Branch Division of Wast ( Management FROM:
G.W. Roles Low-Level Waste Licensing Branch Division of Waste Management
SUBJECT:
RADIOACTIVITY CONCENTRATION DISTRIBUTIONS IN LWR PROCESS WASTE The attached document lists, for wet wastes generated by light water reactor power plants, the volume percent distribution of gross concentration (in Ci/ft 3) as determined from two years of proprietary shipment records to the Barnwell, S.C. disposal facility.
Six different LWR waste streams are shown:
PWR resins, PWR sludges, PWR concentrated liquids, BWR resins, BWR sludges, and BWR concentrated liquids.
The data from which the attached document was prepared were compiled from the disposal records by Neuman and Dupree, and covers the years 1978 and 1979.
Eginal Signed by G.W. Roles Low-Level Waste Licensing Branch Division of Waste Management
Enclosure:
As stated 8207300553 820428 PDR WASTE WM-4 PDR Q N bi y v-(v hg TICKET N0:
DIST:
0FC : WMLL O
WML
},
PHLohaus :
NAME : GWRoles/c y
DATE $82/04/ M i 82/04/D$
4 Radionuclide Concentration Distributions in LWR Process Waste The attached table lists, for wet wastes generated by light-water reactor power plants, the volume percent distribution of gross concentration (in Ci/fta) as determined from 2 years of proprietary waste shipment records to the Barnwell, S.C. di_sposal facility.
Six different LWR waste streams are shown:
PWR resins, PWR sludges, PWR concentrated liquids, BWR resins, BWR sludges, and BWR concentrated liquids.
The concentrations are separated into 14 ranges from
.000005 Ci/ft3 to 10+ Ci/ft.
Within each range, the percentage of the total 3
volume of the particular stream found to be within the range is indicated, as well as the average concentration (in Ci/ft ) of the waste within the concentra-3 tion range. Also shown are the total number of data points (shipments) found for each waste stream as well as the total waste volumes.
The data for the table was complied from the disposal records by Neuman and Dupree, and covers the years 1978 and 1979.
During these two years, the Barnwell site received 79% and 77%, respcctively, of the total volume of waste disposed in the country.
In the table, resins and sludges are shown as dewatered, while concentrated liquids are shown prior to solidification.
To obtain these concentrations from the raw data, resins and sludges were generally assumed to be shipped dewatered unless:
(1) specifically otherwise indicated in the data or (2) originating from power stations operated by Commonwealth Edison (eg, Quad Cities, Zion).
Concentrated liquids were all assumed to be shipped solidified. To convert to dewatered resins and sludges and concentrated liquids, a solidification volume increase factor of 1.4 was assumed.
The calculated results require some interpretation, principally due to some uncertainties present in the raw data.
For example, the distinction in the shipment records between resins and sludges was often unclear.
Some of the data points were listed as " resins + diatomaceous earth" (counted as sludge) while others were listed as "powdex resin" (counted as resin).
Many other potential data points, which were disregarded for purposes of constructing the table, were described in vague terms such as " solidified product" or "radwaste solidified in concrete." Several other potential data points (also disregarded) 1
were listed in the shipment records as " evaporator bottoms plus dry waste."
Another problem was that the distribution of data points was uneven. While over a thousand.dat_a. points were available for BWR resin waste,;only_10 data points, for example, were found for PWR sludge and 63 data points for BWR concentrated liquids.
.a Given the above, the results for LWR resins and sludges are also presented in the table as combined (resin + sludge) streams.
Support for this action is indicated by the similar concentration distribution shown for BWR resins and BWR sludges.
BWR and PWR concentrated liquids are also presented in.the table as combined streams.
Support for this combination comes from the observation that about 80% of the data points for both PWR and BWR concentrated liquids falls within a concentration range of from.001 to.05 Ci/ft.3 The data also indicated that LWR resins and sludges generally have a higher percentage of waste in a higher concentration range than concentrated liquids.
Of these, BWR resins and sludges appear to have somewhat higher concentrations than PWR resins and sludges.
2
s e
a s
e 8
Volume Percent and Average Concentration (C1/f t ) in Range PWR RESIN PWR SLUDGE PWR CONC LIQ BWR RESIN BWR SLUDGE BWR CONC LIQ PWR RESIN + SLUDGE SWR RESIN + SLUDGE LWR CONC LIQ
%ng ? (C1/ft )
Volt Conc vol% Conc Vol% Conc Vol% Conc Vo1% Conc Vo1% Conc Vo1% Conc vo1% Corc vol% Conc 8
.000005 -.00001 0.2
.0000071 0.1
.0000071
.00001 -.00005 0.8
.000032 0.4
.000043 0
0.7
.000032 0
0.3
.00004 l
.00005 -.0001 5.2
.000064 0.6
.000068 0.2
.000059 1.2
.000060 4.8
.000064 0.4
.000060 0.5
.00006
.0001
-.0005 8.4
.00025 4.3
.00033
- 3. 7
.00028 3.5
.00025 7.5
.00027
- 7. 8
.00025 3.7
.00027 4.9
.00031
.0005
-.001 5.9
.00071 8.1
.00071 9.1
.00067 3.2
.00061 1.1
.00092 0
6.1
.00071 2.9
.00070
- 7. 6
.00067 i
.001
-.005 15.5
.0026 67.8
.0019 28.6
.0028 9.7
.0030 19.4
.0028 45.7
.0030 19.3
.0025 11.4
.0029 31.8
.0928
.005
.01 8.2
.0074 9.3
.0076 20.4
.0077 7.2
.0076
- 7. 3
.0072 22,3
.0072 8.3
.0074
- 7. 2
.0075 20.9
.0076 30.4
.024 31.0
.024 29.0
.025 8.8
.027 22.1
.024 30.6
.024 26.8
.024
.01
.05 23.0
.024 In.9
.018 a
.05
.1 8.9
.074 3.9
.084
- 3. 2
.067 11.6
.076 12.3
.070 6.1
.075 8.5
.074 11.8
.075 2.9
.069
.1
.5 15.4
.22 2.6
.16 26.9
.21 20.0
.21 9.7
.15 14.3
.21 25.7
.21 3.8
.16
.5
- 1.0 4.2
.71 0.1
.51 3.6
.72 3.8
.75
- 3. 9
.71 3.6
.73 0.1
.51 1.0
- 5.0
- 3. 5 2.08 0.3 2.45 2.4 1.69 2.3 1.81
- 3. 2 2.08 2.4 1.72 0.2 2.45 l
i l
2.0
- 10 0.9 7.37 0.1 7.17 0.8 7.37 0.1 7.17 l
10+
0.2 11.19 0.1 13.08 0.2 11.19 0.1 13.08 l
l Jata Points (1818) 254 10 286 1024 181 63 264 1205 349 1
ictal volume (ft )
39,924 3121 55,081 142,097 30,044 71,790 43,045 172.141 66,331 8
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