ML19256F423

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Excerpts from Radwaste,Environ Monitoring & Occupational Personnel Radiation Exposure,Jul-Dec 1974.
ML19256F423
Person / Time
Site: Quad Cities  Constellation icon.png
Issue date: 02/28/1975
From:
COMMONWEALTH EDISON CO.
To:
Shared Package
ML19256F405 List:
References
FOIA-79-491 NUDOCS 7912190126
Download: ML19256F423 (8)
v • d • e


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QUAD CITIES POWER STATION RADIOACTIVE WASTE, ENVIRONMENTAL MONITORING AND OCCUPATIONAL PERSONNEL RADIATION EXPOSURE JULY THROUGH DECEMBER 1974 ggc5RPTS FEBRUARY 1975 )b a

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SUMMARY

a Gaseous and liquid effluents for the period remained at a fraction of 10 the Technical Specification Limits. Calculations of environmental con-centrations based on effluent, Mississippi River flow, and meteorologi-N %g cal data for the period indicate that consumption by the public of E radionuclides attributable to the plant will not exceed the quantity of those radionuclides that result from continuous exposure to the concen-

[E CFR20. Gac:ma p tration values listed in Appendix B, Table II, of radiation exposure from noble gases released to the atmosphere represent-ed the critical pathway for the period with a maximum individual dose es-timated to be 5 mrem for the six-month period, and 7 mrem for the year, when a shielding and occupancy factor of two is assumed. Environmental monitoring results confirm that dose via other pathways was not signif-

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l-l 1.0 EFFLUENTS 1.1 GASEOUS Er""JENTS TO THE ATMOSPHERE Measured concentrations and isotopic composition of noble gases, r radioiodine and particulate radioactivity released to the atmosphere dur- '

ing the period 1 July through 31 December 1974, are listed in Table 1.1-1.

A six-month total of 5.3 E+ 05 curies of noble gases was released during the period with a maximum release rate during any one-hour period of 1.05 E - 01 '

Ci/sec. Release rates during any one month of the period did not exceed 11% of the Technical Specification limit. '

A total of 6.2 curies of I-131 and 12.5 curies of I-133 were released during the six-month period. The highest monthly radioiodine release was 61% of the Technical Specification limit.

Six-month totals of 0.15 curies of beta-gamma emitters and 1.4 E - 06 f curies of alpha emitters were released as airborne particulate matter.

t The highest monthly release of beta-gamma particulate activity did not ex-

ceed 14% of the Technical Specification limit.

{ A total of 1.3 E+ 0711ters of radioactive liquid wastes contain- I ing 26 curies (excluding tritium) were discharged from the station.

', These wastes were released at an average concentration of 5.3 E- 08 uCi/ml '

i which is 53% of the Technical Specification releases limit for unidentified

radioactivity. During the same period, 21 curies *of tritium and 1.2 E- 03 '

} curies of alpha radioactivity were released. Monthly release estimates and l principal radionuclides in liquid effluents are given in Table 1.2-1.  ;

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The maximum concentration of radioactivity, above background, in the Quad )

Cities Unit 1/2 discharge canal during the period was computed to be 9.92 E- 08  ;

l uCi/ml. This particular release occurred on 11-13 August 1974. '

2.0 SOLID RADIOACTIVE WASTE i_

The total amount of solid waste packaged for disposal was I cubic feet during the last six-month period. The total amount of radio- '

activity involved was calculated to be just under 540 curies. Solid _

radioactive wastes were shipped to either Nuclear Engineering Company, '

Sheffield, Illinois or Chemical Nuclear Services, Bellevue, Washington.

Date, volume and radioactivity of each shipment are shown in Table 2.0-1.

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  • Exclusive of December contributions for which data were not available in time for inclusion in this rr port.

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l TABLE 1.1-1(Cont'd)

REPORT OF RADIOACTIVE EFFLUENTS Docket No. 50-254 & 50-265 FACII.ITY : QUAD CITIES YEAR: 1974 E Six Month 1.1 Gaseous Effluents Units July Aug Sept Oct. Nov. Dec. Total

3. Particulate Releases h a) Gross Deta-Gamma Curies 1.5 E -02 1.7 E -02 1.9 E -02 5.6 E -02 2.5 E -02 1.9 E-02 1.5 E-01 tj b) Gross Alpha Curies 4.7 E -08 5.1 E -07 6.7 E -08 1.4 E -07 1.1 E -07 4.8 E-07 1.4 E-06 h c) Isotopes Released: Curies y Sr- 89 2.0 E -04 2.9 E -04 1.3 E-03 2.8 E-03 9.1 E-04 NA 5.5 E-03*

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Sr- 90 2.6 E -05 1.8 E -05 1.0 E-05 2.1 E-05 1.5 E-05 NA 9.0 E-05*

Cr- 51 7.1 E -04 1.1 E -03 2.0 E -04 4.7 E -04 8.9 E -04 1.0 E-03 4.3 E-03 dI Hn- 54 9.1 E -05 6.5 E -05 1.1 E -04 8.6 E -05 5.9 E -05 7.4 E-05 4.8 E-04 C Co- 58 9.3 E -05 9.3 E -05 2.5 E -05 7.1 E -05 7.3 E -05 3.0 E-05 3.9 E-04 d co- 60 5.6 E -04 3.4 E -04 1.6 E -04 3.6 E -04 3.1 E -04 7.9 E-04 2.5 E-03 l

Zn- 65 1.5 E -05 3.7 E -05 1.7 E -05 1.9 E -05 1.3 E -05 5.3 E-05 1.5 E-04 m

O I -131 1.5 E -03 2.7 E -03 2.7 E -03 8.1 E -03 3.2 E -03 2.1 E-03 2.0 E-02 N Cs-134 3.9 E -04 1.5 E -04 2.8 E -04 3.8 E -04 3.5 E-04 W 1.2 E -03 2.7 E-03

, Cs-137 6.9 E -04 3.0 E -04 4.9 E -04 6.8 E -04 6.0 E -04 6.5 E-04 3.4 E-03 Ba-140 1.6 E -04 6.1 E -04 8.4 E -04 2.1 E -03 1.3 E -03 5.3 E-04 5.5 E-03 j __, La-140 2.7 E -04 9.1 E -04 4.7 E -05 3.2 E -03 1.9 E -03 7.6 E-04 7.1 E-03 p - Cs-136 2.6 E -05 2.0 E -05 6.0 E -05 ND ND 4.6 E-05 1.5 E-04 p Ce-141 ND ND 2.5 E -05 ND ND ND 2.5 E-05 E

d) % of Chimney Limit  % 0.03 0.03 0.06 0.21 0.06 0.03 -

e) % of Vent Stack Limit  % 14 11 7 11 13 12 -

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. ; SOLID WASTE SHIPMENTS

  • i July through December 1974

- Month Volume Shipped (m 3) Curies

. July 52.4 44.6 August 77.9 138.9 September 67.8 172.3 October 73.4 55.1 November 12.1 39.6 December 88.1 87.8 TOTAL 371.7 538.3

  • Wastes shipped to Nuclear Engineering Co. , Sheffield, Illinois, and Chemical Nuclear Services, Bellevue, Washington.

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