ML18060A207

Offsite Dose Calculation Manual

ML18060A207
Person / Time
Site:	Saint Lucie
Issue date:	02/15/2017
From:	Florida Power & Light Co
To:	Office of Nuclear Reactor Regulation
References
Download: ML18060A207 (4)

Text

ENCLOSURE3

-c-200,-oFFSITE DOSE CALCULA~TION MANUAL REVISION 48 (PCR 2184721) AND REVISION 49 (PCR 2137189)

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a,=~ ;§ i- - Revision 48-lncorporated PCR 2184721 to ade note to cover page ensurin§ that changes to ro the-ODCM are reviewed by EP. (Author: N. Davidson)

Revision 47 - Incorporated PCR 2174317 to correct location on map in the AREOR.

(Author: N. Davidson)

Revision 46 - Incorporated PCR 2146572 to update procedure number reference.

(Author: N. Davidsonl

-Revision 45 - lncorporated-PCR 2067790 for addition of Unit-1 and 2 containment-equipment hatch monitoring as potential effluent pathways dur-ing outages. CA-uthor: J. Hunt)

Revision 44 - Incorporated PCR 1974178 to implement changes documented in EC 277011 for rep~acement-of U1 PV Radiation Monitor. Updated monitor channel IDs. The new tJ1 PV Mirian MGP Radiation Monitor does not have a particulate, iodine, or mid range gas deteGtor channet (Author: J. Hunt)

Revision Approved By Approval Date UNIT#

DATE 0 C.M. Wethy 04/27/82 DOCT PROCEDURE DOCN C-200 SYS 48 M. DiMarco 02/15/17 STATUS COMPLETED REV 48

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0 - <( Revision 49 - Incorporated PCR 2137189 per EC 278372 to update values in Methodology

<ii:.::- 0 O'.l -section. (Author: T. Bertolinir Revision 48 - Incorporated PCR 2184721 to add note to cover page ensuring that changes to the ODCM are reviewed by EP. (Author: N. Davidson)

Revision 47 - Incorporated PCR 2174317 to correct location on map in the AREOR.

(Author:-N~ Davidson)

Revision 46-!ncorporated PCR 2146572 to update procedure number reference.

-:1_ (Author: N. Davidson)

Revision 45 - Incorporated PCR 2067790 for addition of Unit 1 and 2 containment equipment hatch monitoring as potential effluent pathways during Gutages. (Author: J. Hunt)

Revision 44- - Incorporated .PCR 1974178 to implement changes documented in EC 277011 for replacement of U1 PV Radiation Monitor. Updated monitor channel IDs.The-new U1 PV

-Mirian MGP Radiation Monitor-does not have a particulate, iodine,-or mid range gas detector channel. (-Author: J. Hunt)

Revision Approved By Approval Date UNIT#

DATE 0 C.M. Wethy 04/27/82 DOCT PROCEDURE DOCN C-200 SYS 49 W. Parks 08/09/17 STATUS COMPLETED REV 49

1. OF PGS

REVISION NO.: PROCEDURE TITLE:

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49 PROCEDURE NO.:

OFFSITE DOSE CALCULATION MANUAL (ODCM)

C-200 ST. LUCIE PLANT METHODOLOGY-SECTION 2.2 Determining the Total Body and Skin Dose Rates for Noble Gas Releases And Establishing Setpoints for Effluent Monitors (continued)

1. (continued)

C. (continued)

Unit 2 Fuel Building:

The 10,000 cpm High Setpoint is based on an Infant's Maximum Exposed Organ Dose Rate (Liver) from Inhalation of Cs-137-at the Site Boundary-. The value-of 10,000 cpm is very conservative.relative to the site dose rate limit of 1500 mrem[yr. The methodology-is based on measured particulate channel count rates when the-detector was calibrated with a known source activity of-cs-137, and on default assumptions as follows:

1. The particulate channel read 39,782 ccpm when exposed to a 7.59 uCi source of Cs-137 (decayed to June 19, 1996 data).

2. Assuming that 7.59 uCi ofCs-137 were collected during 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of skid sample collection (fixed filter), the typical sample volume would yield z1..08E+06-cc's. Greater than 99% sample I-fitterefficiency is assumed.

-:3. 1he maximum building process flow e~haust is -31,584 cfm.

4. Q(dot) for Cs-~ 37 uCi/sec release rate is approximately 21 uCi/sec as follows:

7.59 uCi x hour x 28317 cc's x 3l584 ft3 x min = 27.72 uCi hour 4.08E+06cc.s ft3 mi-n 60 sec sec I*

5. The default historical (X/Q)d for the worst.sector (NVJ) at the site boundary is 1.3E-06 meters/sec.

6. The E.lose rate (equivalent to 10,000 cpm) is calculated per ODCM Section 2.3 Inhalation Dose Rate to an Infant. The resulting dose rates yield.

Bone Liver Thyroid Kidney Lung GI-LLI W.Body mrem/yr mrem/yr mrem/yr mrem/yr mrem/yr mrem/yr mrem/yr 6.21 E+OO 6.62E+OO OE+OO 3.52E+OO 8.56E+OO 1.2E+OO 3.99E+OO L __J