ML20059D781
| ML20059D781 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 05/01/1990 |
| From: | Johnson S FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML20059D770 | List: |
| References | |
| PROC-900501, NUDOCS 9009070181 | |
| Download: ML20059D781 (4) | |
Text
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CRYSTAL RIVER - UNIT #3 0FF-SITE DOSE CALCULATION MANVAL i
i Approved By: b dAAd h
V Date:
A 1 1940-q Revision:
15 9009070181 900823 PDR ADOCK 05000302 R
l i
Calculation of Ingestion Dose Factor 1
Grass-Cow Milk Pathway Qr(Vap) f c-p fs (1 - fp fs) **A tih R
D/Q = K' Fm(r)(DFLj)a
+
e'A ttf i
Aj + Aw Y
Y p
3 where: Unit = m2. mrem /yr per #C1/sec Reference Table R.G.1.109 K'
A constant of unit convarsion,106 pCi/ Ci.
I
=
i QF The cow's consumption rate, 50 kg/ day (wet weight)
E-3
=
U The receptor's milk consumption rate for age (a),
E-5
=
ap in liters, yr l
Infant & Child - 330 Teen - 400 Adult - 310 Yp The agricultural productivity by unit area of pasture E-15 feed grass 0.7 kg/mZ Ys The agricu1%ni oroductivity of unit eea of E-15 stored feed 2.0 kg/m2 Fm = The stable element transfer coefficients, in days /kg.
E_- 1 Fraction cf deposited activity retained on cow's E-15 r
=
feed grass 1.0 radioiodine 0.2 particulates tr Transport time from pasture to receptor, in sec.
E-15 l.73x100 sec (2 days) 4 th Transport time from crop field to receptor, in sec.
E-15 i
7.78x100 sec. (90 days)
(DFLj)a - The maximum organ ingestion dose factor for the ith E-Il to 5
radienuclide for the receptor in age group (a),
E-14 in mrem /pCi i
Aj The decay constant for the ith radionuclide, in sec -I
=
Aw The decay constant for removal of activ;ty on ; eaf and E-15 plant surfaces by weathering 5.73 x 10 4 sec -
4 (corresponding to a 14 day half-life).
fp Fraction of the year that the cow is on pasture
=
(dimensionless) = 1*.
fs Fraction of the cow feed that is pasture grass while the cow is on pasture (dimensionless) = 1*.
- Milk cattle are considered to be fed from two potential sources, pasture grass and stored feeds. (
8.1' Oriain and Purnose of the Offsite Dose Calculation Manual The Offsite Oose calculation Manual was developed t'o support the implementation of the Radiological Effluent Technical Specifications required by 10 CFR 50, Appendix I, and 10 CFR 50.36.
The purpose of the manual is to provide the NRC with-sufficient information relative to effluent monitor setpoint calculations, effluent related dose calculations, and environmental monitoring to demonstrate compliance with the Radiological Effluent Technical Specifications.
6.2 Channes it is recognized that changes to-the Offsite Dose Calculation Manual may be required during the operational life of Crystal River Unit 3.
All changes shall ne reviewed and approved by the PRC arlor to implementation.
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The NRC shall be informed of all changes to tie 00CM by providing a description of the change (s) in the first Semiannual Radioactive Effluent-Release Repor'. following the date the change became effective.
6.3 Review In addition to the change review in 6.2 above, the NGRC shall review the OOCH and its implementing procedures at least once per 24 months.
6.4 Unclanned Releases in order to better ensure that Technical Specification 6.9.1.5.d and 6.5.1.6.k are met, the following definition of " unplanned release" was developed.
This definition should be used as " guidance only."
11 i
An " UNPLANNED RELEASE" is:
- 1) A release of radioactive waste to the plant environs which has not been -evaluated and released in accordance with approved procedures and Technical Specifications.
Radioactive waste in this context means radioactive material that I
is awaiting evaluation before being released in a controlled l
fashion.
This includes plant condensate, and the contents of all of the waste tanks (i.e., ECST's, LSST's, WGOT's, SDT-1).
4 i
Examples:
Releasing the wrong waste tank, or sampling the wrong tank and l
releasing the correct tank; I
l
- 2) A release of radioactive material through a designated effluent i
pathway, which is due to equipment failure or human error, and causes i
actuation of an effluent monitor warning alarm; J
l l
t 87-o
[
.t L-3)
Any sustained _ release of gaseous radioactive material from the RCA, but not throug or human error,h a normal effluent pathway, due to equipment failure i
which exceeds 1 MPC, restricted area.
1 Examples:
)
Releases from the RB equipment _ hatch RCA'in excess of 1 MPC, restricted area.
Relee,es from the IB RCA in excess of 1 MPC, restricted area.
Not Examples of Unplanned Releases:
Short term increases in effluent monitor count rate due to sampling -
and analysis activities.
Controlled releases due to planned maintenance activities.
Minor transient releases due to normal plant operations, such as waste processing or power changes which may cause an-effluent monitor's
. warning alarm to actuate.
l Events within the Auxiliary Building which may actuate a process monitor alarm but are not of sufficient magnitude to actuate an effluent monitor warning alarm.
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