ML19224B001
| ML19224B001 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/02/1977 |
| From: | Metropolitan Edison Co |
| To: | Mullinix W NRC/IE |
| References | |
| 1958.4, TM-0201, TM-201, NUDOCS 7906130403 | |
| Download: ML19224B001 (4) | |
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DOCUMENT NO:
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COPY MADE CN j -2 h
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METRCPOLIT!di EDISON COMPANY.
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w, k'ilda R. Mullinix, NRC 181 023 790 61 ~5@3
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Revision 2 1958.4 11/02/77 THREE MILE ISLAND NUCLEAR STATidN MA l'n rnov sul i
STATION CHEMISTRY PROCEDURE 1958.4 NO~
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DOSE EQUIVALENT IODINE 190_lD. COPY.
Table of Effective Pages Pace Cate Revision Pace Date R evision Pace Date Revision 1.0 11/02/77 2
26.0 51.0 3
2.0 11/02/77 2
27.0 52.0 3.0 11/02/77 2
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75.0 Unit 1 Staf f Recommends Apr roval Unit 2 Staff Recomme ds pp val h /_/# Date
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Date Approval Approval H
Ccanizant Oc/t[ed Cognizanl D e'pi.fH ea,d Unit 1 PORC Recommends Approval Unit 2 PORC Recommer.ds Approval 40E w %,
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Quality Azurance Unit S;penutendent r
1958.4 Revision 2 11/02/77 1.0 3CMMARY NRC Regulatory Guide 1.16 states that a tabulation of primary coolant sample resul ts for 1-131, I-132, I-133, I-134 and I-135 should be made following any thermal pcwer char.ge of more than 15% of rated thermal pcwer within a 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> period.
Such 4
samples should be obtained within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after the power change and should La continued at 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> intervals until the dose equivalent I-131 drops below 1pCi/ml.
Dose equivalent I-131 is that amount of I-131 which would give the same internal radiaticn dose as would the mixture of iodine nuclides in tt a sample.
2.0 APDARATUS 2.1 As described in GP 1104-43 and 2104-1.11.
2.2 As described in ECP 1958.
3.0 REAGENTS 3.1 No reagents necessary 4.0 PRCCEDURE I
4.1 Obtain a sample of reactor coolant letdown as described in OP 11C4-43 cr 2103-1.11.
4.2 Analyze for '-131, I-132, I-133, I-134 and I-135 activities as described in SCP 1953.
4.1 Calculate Dose Equivalent I-131 (D) as follcws:
P
- P132 + P133 ' P134 + P125 D
131 '
=
Where:
P,,l = I-131 Activity x 1.00 ia P
= I-32 Activity x 0.036 j
13,c P;33 = I-33 Activi ty" x 0.27 l
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1958.4 Revision 2 11/02/77 F
= I-134 Activity x 0.017 134 P
= I-13b Activity x 0.081 135 1.4 Document results en Data Sheet 1958.4-1.
5.0 REFERENCE 5.1 NRC Regulatory Guide 1.16.
1 5.2 NRC, TID 14844, Calculation of distarce factors for power ar.d test reactor sites.
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181 026 2.0 4
1958.4 Revision 2 11/02/77 Unit #
ISOTOPIC IODINE DOSE EQUI'!ALENT REPCRT REACTOR COOLANT A
l DATE TIME
" PCWER l
I l 31 A.
1.00 x I)3) 7
.-._-l 2.
0.035 x I 132 I 133 C.
0.27 X I l33 I l34 D.
0.017 x 1 134 I --
lac E.
0.084 x I l35 Dose Ecuivalent Iodine = MS+C+D+E PE;.FCPMED BY-I i
l 2.c0C'!ED SY:
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