ML19308D634

Tech Spec Change Request 20 Re Tech Spec 3.2,changing Units in Which K-40 Is Reported,Deleting Total Deposition of Lld'S & Requiring Lower Lld'S for K-40

ML19308D634
Person / Time
Site:	Crystal River
Issue date:	02/17/1978
From:	FLORIDA POWER CORP.
To:
Shared Package
ML19308D624	List: ML19308D623 ML19308D628 ML19308D630 ML19308D634
References
TAC-08886, TAC-08887, TAC-8886, TAC-8887, NUDOCS 8003050840
Download: ML19308D634 (8)

Text

_ _ _ _____-___ _ - _ _ _ _ _ _ _

U Technical Specification Change Request No. 20 (Appendix B)

Replace pages 3-10,11,12,13,14, 21 and 22 with the attached revised pages 3-10,11,12,13,14, 21 and 22.

Proposed Change Change all potassium 40 (K-40) values in Table 3.2-1 from grams / unit to picocuries/ unit.

Revise the LLD's for K-40 in Tables 3.2-5 A and B; change the units of K-40 in Tables 3.2-5 A and B; delete the Total Deposition LLD's from Table 3.2-5A.

Reason for Procosed Change Potassium 40 is the only nuclide in Tables 3.2-1 that does not have values of picocuries/ unit. To correct this, a factor of 838 picocuries K-40/ gram K has been applied (1.18x104 grams K-40/ gram Kx7.1x106 pCi/ gram K-40). This brings the values of K-40 in line with the other nuclides in the table.

Tables 3.2-5 A and B have been revised to reflect more realistic LLD's than are presently required. It can be seen that if the 838 picccurie K-40/

gram K conversion factor is applied to the tables, extremely large LLD's will result and it would be possible to exceed ten times the preoperational 95 percentile value a reporting limit before the operational LLD is reached.

However, the LLD's in the tables were thought to have units of picocuries/

and in that light, they are overly restrictive. Not only can the present detection system not yield these LLD's while yielding the recuired LLD's for the other nuclides, but the preoperational values are such that more reasonable LLD's can be required without losing the sensitivity necessary to determine increases of activity over the preoperational values.

Finally, the Total Deposition LLD's were deleted from Table 3.2-5A as the State of Florida Department of Health and Rehabilitative Services performs the Total Deposition (Precipitation) analyses.

Benefit-cost Analysis of Proposed Change The changing of the units in which K-40 is reported and the deleting of the Total Deposition LLD's from Table 3.2-5A are essentially bookkeeping changes which benefit the personnel working with the Environmental Technical Specifications and pose no cost to t.N environment.

The proposed requirement of lower LLD's for K-40 will incur no cost to the licensee while benefiting the environment around Crystal River Unit 3. Any increase of activity above preoperational levels in the environment will now be detected, rather than not being required to detect activity in the environment until it had reached levels many times that of the preoperational samples.

RB: hic 2/1 ecos osofyo

w s

_ 3-10 TABLE 3.2-1 SUIDfARY OF PREOPERATIONAL ENVIR0 RENTAL SURVEILLANCE RESULTS 1971 - 1974 (Cont'd.'

Preccerational Concentrations Environmental .

Media Nuclide Median Value 95 Percentile Value Sea Water E-3 71. pCi/1 87 pC1/1 Ba-140 (a) 11. pCi/kg s Cs-137 (a) 10. pCi/kg Zn-65 (a) 7. pC1/kg Mn-54 (a) (a)

I-131 (a) (a)

K-40 150.8 pC1/kg 368.7 pC1/kg Ra-226 (a) 600. pCi/kg Th-232 (a) 7. pCI/kg Zr-95 (a) (a)

Ru-106 (a) (a)

Cs-134 (a) (a)

Air Gross S 0.029 pCi/m3 0.120 pC1/m3 Ba-140 (a) 0.016 pCi/m>

Cs-137 (a) 0.013 pC1/m3 Zn-65 (a) (a)

Mn-54 (a) (a)

I-131 (a) 0.004 pC1/m3 ,

K-40 (a) (a) l Ra-226 (a) 0.241 pCi/23 Th-232 (a) 0.008 pC1/=3 Zr-95 0.003 pC1/m3 0.043 pCi/m3 Ru-106 0.025 pCi/m3 0.216 pCi/=3 Ce-144 0.003 pCi/m3 0.172 pCi/s3 Milk Sr-90 4. pC1/1 6. pC1/1 Cs-134 (a) (a)

I-131 (a) (a)

Ba-140 (a) (a)

Co-58 (a) , (a)  !

Cc-60 (a) (a)

Mn-54 (a) (a)

Zr-95 (a) (a) l Cs-137 16 pC1/1 22 pCi/l

^

(*) See pg 3-9. -

l

. - '3

, 3-11 Table 3.2-1 SU10tARY OF PREOPENATIONAL E P/IR0;DtENTAL SURVEILLAMCE RESULTS 1971 - 1974 (Cont'd)

Preoperationaf Concentrations Environmental Media Nuclide Median Value 95 Percentile value 4

Soil Ba-140 (a) (a)

Cs-137 270. pC1/kg 1100. pCi/kg Zn-65 (a)

(a)

Mn-54 .

(a) (a) s I-131 (a) (a)

K-40 713 pCi/kg 1432 pCi/kg Ra-226 (a) 2200. pCi/kg Th-232 (a) 300, pCi/kg Zr-95 40. pC1/kg 150. pCi/kg Ru-106 0. pCi/kg 330. pC1/kg Small Terrestrial Ba-140 (a) (a)

Animals Cs-137 (a) 80. pCi/kg Zn-65 (a) 160. pCi/kg Mn-54 (a) (a)

I-131 (a) 100. pCi/kg K-40 2656.5 pCi/kg 3586.6 pCi/kg Ra-226 (a) 720. pCi/kg Th-232 (a) (a)

Zr-95 (a) 70. pCi/kg Ru-106 (a) (a)

Total Deposition Ba-140 3 pCi/m -day 22 pCi/m;-day Cs-137 (a)

Zn-65 6pCi/m;-day (a) 7 pCi/m'-day Mn-54 (a) (a) 1-131 (a) (a)

K-40 (al 25.1 pCi/m.32-day Ra-226 20 pCi/m'-day 508. pCi/m;-day Th-232 (a)

Zr-95

6. pCi/m;-day (a) 13. pCi/m"-day Ru-106 (a) 152. pCi/m -day

• See page 3-9.

r\

3-12 Tabic 3.2-1

SUMMARY

OF PRE 0PERATIONAL ENVIR0mtENTAL SURVEILLANCE RESULTS 1971 - 1974 (Cont'd)

Preoperational Concentrations Environmental Media , Nuclide Median value 95 Percentile Value Oyster Meat Ba-140 (a) (a)

Cs-137 (a) (a)

Zn-65 (a) . 33. pCi/kg Mn-54 (a) (a) 1-131 (a) s (a)

K-40 (a) 2.2 g/kg Ra-226 (a) 1843.6 pCi/kg Th-232 (a) (a)

Zr-35 (a) (a)

Ru-106 (a) 82. pCi/kg Blue Crab 3a-140 (a) 55. pCi/kg Cs'137 (a) 75. pCi/kg 2n-65 (a) 127. pCi/kg Mn-54 (a) 24. pCi/kg I-131 (a) (a)

K-40 '1424.6 pC1/kg 2011.2 pCi/kg Ra-226 1325. pCi/kg 3600 pCi/kg Th-232 92. pCi/kg 170. pCi/kg Zr-95 (a) 13. pCi/kg Ru-106 (a) (a)

Cs-134 (a) (a) lierbivorous Fish Ba-140 (a) 50. pCi/kg Cs-137 (a) 110. pCi/kg Zn-65 (a) 6~. pCi/kg Mn-54 (a) (a) 1-131 (a) (a)

K-40 2178.8 pC1/kg 3100.6 pCi/kg Ra-226 960. pCi/kg 3100. pCi/kg Th-232 (a) 84. pCi/kg Zr-95 (a) 9. pCi/kg Ru-106 (a) 90. pCi/kg Cs-134 (a) (a)

See page 3-9.

<~.

, 'S rx 3-13 Table 3.2-1

SUMMARY

OF PREOl'ERATIONAL ENVIROtD!ENTA1.

SURVEILLANCE.RESULTS 1971 - L974 (Cont'd)

Preoperational Concentrations Environmental Media Nuclide Median Value 95 Percentile value Carnivorous 3a-140 , (a) 72. pCi/kg Fish Cs-137 (a) 43. pCi/kg Zn-65 (a) 99. pCi/kg Mn-54 (a) , (a) 1-131 (a) (a)

K-4C 2346.4 pCi/kg 3854.8 pCi/kg Ra-226 335. pCi/kg 2400. pCi/kg Th-232 (a) 92. pCi/kg Zr-95 (a) 12. pCi/kg Ru-106 (a) (a)

Cs-134 (a) (a)

Shrimp Ba-140 (a) (a)

Cs-137 (a) 37. pCi/kg Zn-65 (a) (a)

Mn-54 (a) (a)

I-131 (a) (a)

K-40 921.8 pCi/kg . 2514. pC1/kg Ra-226 (a) .(a)

Th-232 (a) 36. pCi/kg Zr-95 (a) (a)

Ru-106 (a) (a)

Food Crops Co-53 (a) (a)

(Oranges) Co-60 (a) (a) 3a-140 . (a) (a)

Sr-90 105. pC1/kg 130. pC1/kg Cs-134 (a) (a)

Cs-137 (a) (a)

Zn-65 (a) (a)

Mn-54 (a) (a)

I-131 (a) (a)

(* See page 3-9.

G

-s. 3-14 ..

Ttblo 3.2-1

SUMMARY

OF PREOPERATIONAL ENVIRONMENTAL SURVEILLANCE RESULTS 1971 - 1974 (Cont'd)

Preocerational Concentrations Environ = ental Media Nuclide Median Value 95 Percentile Value Vegetation K-40 578.2 pCi/kg 2430.2 pCi/kg Ra-226 (a) 2363. pCi/kg Th-232 (a) 120. pCi/kg Ba-140 26. pci/.kg 253. pCi/kg Zr-95 (a) 31. pCi/kg Cs-137 *1363, pCi/kg 5416. pCi/kg s Zn-65 (a) 589. pci/kg Mn-54 (a) (a)

I-131 (a) (a)

Ru-106 (a) (a)

Aquatic Plants Ba-140 (a) 75. pCi/kg and Crasses Cs-137 (a) 131. pCi/kg (Including Algae Zn-65 (a) 156. pCi/kg and Plankton) Mn-54 (a) 43. pCi/kg

, ,, I-131 (a) 37. pCi/kg K-40 1508.4 pC1/kg 12570. pC1/kg Ra-226 l

624. pCL/kg 3300. pCi/kg Th-232 (a) 230. pCi/kg Ru-106 (a) 360. pCi/kg Zr-95 13. pC1/kg 157. pCi/kg External Radiation All 62. srem/yr 77. mrem /yr Ocean Sediment Ba-140 (a) (a)

Cs-137 (a) 250. pCL/kg Zn-65 (a) (a)

Mn-54 (a) 19. pCi/kg I-131 (a) 34. pCi/kg K-40 259.8 pC1/kg 1005.6 pCi/kg Ra-226 2900, pCL/kg 10000. pCi/kg Th-232 90. pCL/kg 300, pCi/kg Ru-106 190, pCL/kg 696. pCi/kg Zr-95 12. pei/kg 40. pCi/kg Cs-134 (a) (a) 5"}see page 3-9.

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