ML20217N954

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Rev 1.9 to Chapter 10,rev 2 to Chapter 11 & Rev 1.9 to Chapter 12 of LaSalle Odcm
ML20217N954
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 04/30/1998
From:
COMMONWEALTH EDISON CO.
To:
References
PROC-980430-01, PROC-980430-1, NUDOCS 9805060007
Download: ML20217N954 (106)


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3' A X244 ALI, D) t Document Control Desk Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Station PI-137 Wasnington. DC 20555 April 9,1998 Attached is a revision to the Offsite Dose Calculation Manual, LaSalle Annex, Chapters 10 through

12. Please update your manual as follows:

Remove:

LaSalle Chapter 10, Revision 1.8 LaSalle Chapter 11, Revision 1.9 LaSalle Chapter 12, Revision 1.8 Insert:

LaSalle Chapter 10, Revision 1.9 LaSalle Chapter 11, Revision 2 LaSalle Chapter 12, Revision 1.9

-A .

A Please sign below indicating your manual has been updated and that your controlled copy number is correct.

Name Date Return to :

Comed Central Files 1400 Opus Place,4th Floor Downers Grove,IL 60515

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9805060007 980430 PDR ADOCK 05000373 P PDR

l l LaSalle Station O Chapter 10 Change Summary ODCM Revision 1.9, April 1998 l

! Pane Channe Descriotion 10-i Updated revision number. Added file designator identification to bottom of Page.

10-ii Updated page numbers.

10-iii Corrected title for Section 10.2.5 in Table of Contents to match that on p.10-12 and updated page numbers.

10-iv Updated page number for Table 10-1.

10-v Updated page numbers for Fig ;res 10-1 through 10-4.

10-1 Changed date for start of oil burning to Fall of 1998.

10-4 Revised the wording for Section 10.1.3.1.2 to reflect the method for establishing se+ points for the condenser air ejector monitors.

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10-7 Corrected typographical error of monitor EPN.

10-10 Revised the wo g for Section 10.2.4 to clarify the allocation ofliquid releases from the Station.

10-15 Revised Figure 10-3 to indicate a generic symbol for the flow element and deleted obsolete EPN.

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i LASALLE Revision 1.9 April 1998 LASALLE ANNEXINDEX I

CHAPTER 10 Revision 1.9 l

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LASALLE R vision 1.9 April 1998 CHAPTER 10 h RADIOACTIVE EFFLUENT TREATMENT AND MONITORING Table of Contents NUMBER PAGE 10.1 AIRBORNE RELEASES 1

1. System Description 1
1. Condenser Offgas Treatment System 1
2. Ventilation Exhaust Treatment System 2
2. Radiation Monitors 2
1. Station Vent Stack Effluent Monitor 2

! 2. Standby Gas Treatment System Effluent Monitor 2

3. Reactor Building Ventilation Monitors 3
4. Condenser Air Ejector Monitors 3
5. Turbine Building Trackway 3 l 3. Alarm and Trip Setpoints 4
1. Setpoint Calculations 4 i
1. Reactor Building Vent Effluent Monitor 4
2. Condenser-Afr Ejector Monitors 4
3. Station Vent Stack Effluent Monitor 4
4. Standby Gas Treatment Stack Monitor 5
2. Release Limits 5
3. Release Mixture 5
4. Conversion Factors 6
5. HVAC Flow Rates 6
4. Allocation of Effluents from Common Release Points 6
5. Dose Projections 6 10.2 LIQUID RELEASES 6
1. System Description 6
1. Radwaste Discharge Tanks 7
2. Cooling Pond Blowdown 7
2. Radiation Monitors 7
1. Liquid Radwaste Effluent Monitor 7
2. Service Watt.r Effluent Monitors 7
3. RHR Heat Exchanger Cooling Water Effluent Monitors 7 O

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LASALLE Revision 1.9 April 1998

~h CHAPTER 10 (V

RADIOACTIVE EFFLUENT TREA TMENT AND MONITORING Table of Contents (Cont'd)

NUMBER PAGE

3. Alarm and Trip Setpoints.. . . . . . . .. .. .7 1
1. Setpoint Calculations.. . . . . . . . .

.. 7 l

1. Liquid Radwaste Effluent Monitor... . . .8
2. Service Water Effluent Monitors . . . .. 8
3. RHR Heat Exchanger Cooling Water Monitors. . . .8 1
2. Discharge Flow Rates.. . .. . . . . . . . . 8
1. Release Tank Discharge Flow Rate . . . . 8  ;
3. Release Limits.. . . . . . . . . . . . . . . . .9 I
4. Release Mixture .. .. . .. . . .9 j
5. Conversion Factors .. . . . . . . . . . . . .9
6. Liquid Dilution Flow Rates. . . . . . . . .. . . .9
4. Allocation of Effluents from Common Release Points. . ... . .10 Projected Doses for Releases.
5. . .. . . . . . . . . .. . . .10

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10.3 SOLIO!FICATION OF WASTE / PROCESS CONTROL PROGRAM ........................................ 10 l

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l LASALLE Revision 1.9 April 1998 l

CHAPTER 10 &

LIST OF TABLES NUMBER PAGE 10-1 Assumed Composition of the LaSalle Station Noble Gas Effluent . .10-11 O'

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CHAPTER 10 LIST OF FIGURES NUMBER PAQ5 i 10-1 Simplified Gaseous Rady aste and Gaseous Effluent Flow Diagram . .... .. 10-12 {

10-2 Simplified Liquid Radwaste Processing Diagram.. . . . ., . . . . 10-14 .

I 10-3 Simplified Liquid Effluent Flow Diagram .. . ... . . . .. . . . . . . . .10-15 10-4 Simplified Solid Radwaste Processing Diagram.. . . . . . .. . . . . .. ... 10-16 l i

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LASALLE R3 vision 1.9 April 1998 i

l (d 3 CHAPTER 10

! RADIOACTIVE EFFLUENT TREATMENT AND MONITORING j 10.1 AIRBORNE RELEASES 10.1.1 System Description A simplified gaseous radwaste and gaseous effluent. flow diagram are provided in Figure 10-1.

The airbome release point for radioactive effluents is the ventilation stack which is classified as a {

stack in accordance with the definitions in Section 4.1.4 and the results in Table A-1 of Appendix '

A.

l in addition, the standby gas treatment system effluent is released through a separate stack

! inside the ventilation stack. This release point has the same location and classification as the ventilation stack. l l

Exfiltration to the environment from the Turbine Building has been identified at times of positive pressure in the Turbine Building. Continuous air sampling is in place in the south Turbine Building trackway to monitor releases through this pathway. The releases through the trackway door and other potential release paths contain insignificant levels of contamination when compared to the Station Vent Stack which has a 1,000,000 cfm typical stack flow compared to the Trackway flow rate of 40,000 scfm and conservatively estimated as a total of 80,000 scfm to

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account for pathways other than the trackway, in addition, typical releases from LaSalle Station (

, have not exceeded 0.02% of the 10CFR50 Appendix I dose limits. This pathway is a ground ,'

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r level release and should be considered in dose calculations. See Figure 10-1 for further information.

I Waste oil buming to fuel a heat recovery system is planned to begin in the Fall of 1998.

Sampling and analyses of each batch of oilis required to be performed in accordance with ODCM Table 12.4.1-1. The effluent will be verified to be within the instantaneous release limits prior to each batch (assuming 100% of the activity in the waste oil is released in the gaseous l l effluent). The oil buming unit is located in an onsite building within the protected area. The effluent is released out the top of the building, is a ground level release, and will be quantified and considered in dose calculations.

10.1.1.1 Condenser Offgas Treatment System The condenser offgas treatment system is designed and installed to reduce radioactive gaseous effluents by collecting non. condensable off-gases from the condenser and providing for holdup to reduce the total radioactivity by radiodecay prior to release to the environment. The daughter products are retained by charcoal and HEPA filters. The system is described in Section 11.3.2.1 of the LaSalle UFSAR.

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LASALLE Rsvision 1.9 April 1998 10.1.1.2 Ventilation Exhaust Treatment System Ventilation exnaust treatment systems are designed and installed to reduce gaseous radiciodine or radioactive materialin particulate form in selected effluent streams by passing ventilation or vent exhaust gases through charcoai morbers and/or HEPA filters prior to release to the environment. Such a system is not considered to have any effect on noble gas effluents. The ventilation exhaust treatment systems are shown in Figure 10-1.

Engineered safety features atmospheric cleanup systems are not considered to be ventilation exhaust treatment system components.

10.1.2 Radiation Mon. tors 10.1.2.1 Station Vent Stack Effluent Monitor Monitor OPLD5J (Wide Range Noble Gas Monitor) continuously monitors the final effluent from the station vent stack.

The monitor system has isokinetic sampling, gaseous grab sampling, iodine and particulate sampling, tritium sampling, and postaccident sampling capability.

In normal operation the low-range noble gas channel is on line and active. The mid-range channel replaces the low-range channel at a concentration of 0.1 Ci/cc anc' the high-range charmel replaces the mid-range channel at a concentration cf 100 Cl/cc.

The low-range and mid/hlgh-range iodine and particulate samplers operate in a similar ,

manner. In normal operation the low-range samplers are on line. At a concentration of 0.0 Cl' ; the mid/high-range samplers are brought on line, and at a concentration of 10 Ci/cc the low-range sample pump is tumed off.

No automatic isolation or control functions are performed by this monitor. Pertinent information on this monitor is provided in the LaSalle UFSAR Section 11.5.2.2.1.

10.1.2.2 Standby Gas Treatment System Effluent Monitor Monitor OPLD2J (Wide Range Noble Gas Monitor) continuously monitors the final effluent from the standby gas treatment system (SGTS) stack.

The SGTS stack monitor has isokinetic sampling, gaseous grab sampling, particulate and iodine sampling, and post accident sampling capability.

In normal operation the low range noble gas channel is on line and active. The mici-range channel replaces the low-range channel at a concentration of 0.1 Ci/cc and the high-range channel replaces the mid-range channel at a concentration of 100 Ci/cc.

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LASALLE Revision 1.9 April 1998 The low-range and mid/high-range iodine and particulate samples operate in a similar manner. In normal operation, the low-range samples are on-line. At a concentration of 0.05 Ci/cc the mid/high-range samplers are brought on-line, and at a concentration of 10 Ci/cc the low-range sample pump is tumed off.

No automatic isolation or control functions are performed by this monitor.

Pertinent information on this monitor is provided in the LaSalle UFSAR Section 11.5.2.2.2.

10.1.2.3 Reactor Building Ventilation Monitors Monitors 1(2)D18-NOO9 continuously monitor the effluent from the Unit 1(2) reactor building. On high alarm, the monitors automatically initiate the following actions:

A. Shutdown and isolation of the reactor building vent system B. Startup of the standby gas treatment system C. Isolation of primary containment purge and vent lines Pertinent information on these monitors is provided in LaSalle UFSAR Section 11.5.2.1.1.

10.1.2.4 Condenser Air Ejector Monitors Monitors 1(2)D18-N002/N012 (pre-treatment) and 1(2)D18-N903A/B (post-treatment) continuously monitor gross gamma activity downstream of the steam jet air ejector and prior to release to the main stack.

On "high-high-higii alarm monitor 1(2)D18-N903A/B automatically initiates closure of valve 1(2)N62-F057 thus terminating the release.

Pertinent information on these monitors is found in LaSalle UFSAR Sections 11.5.2.1.2 and 11.5.2.1.3.

10.1.2.5 Turbire Building Trackway in order to quantify releases via the Turbine Building trackway, at times of positive pressure in the Turbine Building, airbome sampling should be continuously collected using an air sampler located within the trackway. The samples collected should be counted on a weekly basis. Air sampling to identify noble gas, iodine and particulate monitoring (either as a grab sample or continuous sampling) is designed to ensure evaluation of releases emanating from the Turbine Building.

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LASALLE R: vision 1.9 April 1998 10.1.3 Alarm and Trip Setpoints 9

10.1.3.1 Setpoint Calculations 10.1.3.1.1 Reactor Building Vent Effluent Monitor The setpoint for the reactor building vent effluent monitor is established at 10 mR/hr.

10.1.3.1.2 Condenser Air Ejector Monitors Pre-Treatment Monitor The high trip setpoint is established at 1.5 times the nominal nitrogen 16 (N-16) background dose rate to help ensure that effluents are maintained ALARA.

The high-high trip setpoint is established at 5100 Ci/sec per MW-th a 3.4E+05 Ci/sec per Technical Specification 3.11.2.2.

Post-Treatment Monitor

" e off-gas isolation setpoint is consen/atively set at or below one-half the release limit calculated using the more conservative value obtained from equations 10-3 and 10-4 below.

The off gas isolation setpoint is converted into the monitor units of counts per second (cps) as follows: '

P $ 0.5 x On x E/(472 x F) ' (10-2)

P Off-gas Post-treatment Monitor isolation Setpoint [ cps]

The off-gas post-treatment monitor setpoint which initiates isolation of flow of off-gas to the station vent stack.

Om Total Allowed Release Rate, Stack Release

[ Cl/sec]

The total allowed release rate of all noble gas radionuclides released as stack releases. This is the smaller of the solutions obtained from Equations 10-3 and 10-4.

E Efficiency of the Off-Gas Post-treatment Monitor [ cps per ( Ci/cc)]

472 Conversion Constant [(cc/sec)/cfm]

Converts cubic feet per minute to cubic centimeters per second.

F Maximum Off-Gas Flow Rate (cfm]

10.1.3.1.3 Station Vent Stack Effluent Monitor The setpoint for the Mtion vent stack effluent monitor is conservatively set at or below one-half the calculated release limit calculated using the more conservative value obtained from equations 10-3 and 10-4 below.

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f LASALLE Revision 1.9 April 1998

G/ 10.1.3.1.4 Standby Gas Treatment Stack Monitor The setpoint for the standby gas treatment system effluent monitor is conservatively set at l or below one-half the release limit calculated using the more conservative value obtained from equations 10-3 and 10-4 below.

10.1.3.2 Release Limits Alarm and trip setpoints of gaseous effluent monitors are established to ensure that the release rate limits of RETS are not exceeded. The release limit Q is found by solving Equations 10-3 and 10-4.

(1.11) O. I {f,SJ < 500 mrem /yr (10-3)

O. I {(Lf,(X/Q). exp(-A.R/3600U.)*

+ (1.11)(f)SJ < 3000 mrem /yr (10 4)

The summations are over noble gas radionuclides i.

f, Fractional Radionuclide Composition The release rate of noble gas radionuclide i divided by the total release rate of all noble gas radionuclides, b

C' Q. Total Allowed Release Rate, Stack Release

[ Ci/sec)

The total allowed release rate of all noble gas radionuclides released as stack releases exp (-AR/3600.U.) is conservatively set equal to 1.0 for purposes of determining setpoints.

The remaining parameters in Equation 10-3 have the same definitions as in Equation A-8 of

' Appendix A. The remaining parameters in Equation 10-4 have the same definition as in Equation A-9 of Appendix A. ,

Equation 10-3 is based on Equation A-8 of Appendix A and the RETS restriction on whole body dose rate (500 mrem /yr) due to noble gases released in gaseous effluents (see Section A.1.3.1 of Appendix A). Equation 10-4 is based on Equation A-9 of Appendix A and the RETS restriction on skin dose rate (3000 mrem /yr) due to noble gases released in gaseous effluents (see Section A.1.3.2 of Appendix A). l The more conservative solution from Equations 10-3 and 10-4 is used as the limiting noble gas release rate.

Calibration methods and surveillance frequency for the monitors will be conducted as specified in the RETS.

10.1.3.3 Release Mixture n(,) In the determination of alarm and trip set points, the radioactivity mixture in the exhaust air is assumed to have the radionuclide composition in Table 10-1.

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i LASALLE Rc; vision 1.9 April 1998 10.1.3.4 Conversion Factors )

The conversion factors used to establish gaseous effluent monitor setpoints are obtained as follows.

Station vent stack effluent monitor.

Calibrations compare the response of station detectors to that of a reference detector using NIST traceable sources. Conversion factors for the station detectors are obtained from the response to noble gas or solid sources.

Condenser air ejector monitor.

Pretreatment Monitor The value is determined using noble gas radionuclides identified in a representative sample, and the offgas release rate and monitor response at the time the sample is taken.

Post-treatment Monitor The value is determined using noble gas radionuclides identified in a representative sample, and the offgas concentration and monitor response at the time the sample is taken.

Standby gas treatment system monitor.

l Calibrations compare the response of station detectors to that of a reference detector using ,

NIST traceable sources. Conversion factors for the station detectors are obtained from the response to nobggas or solid sources.

10.1.3.5 HVAC Flow Rates The main stack flow rate is obtained from either the process computer or Monitor RM-23.

l The SGTS flow rate is obtained from either the process computer or chart recorders in the main control room.

10.1.4 Allocation of Effluents from Common Release Points Radioactive gaseous effluents released from the main chimney are comprised of contributions from both units. Under normal operating conditions, it is difficult to allocate the radioactivity between units due to fuel performance, in-plant leakage, power history, and other variables.

Consequently, no allocation is normally made between the units. Instead, the entire release is treatesi as a single source.

10.1.5 Dose Pcojections Because the gaseous releases are continuous, the doses are routinely calculated in accordance with the RETS.

10.2 LIQUID RELEASES 10.2.1 System Description A sin 91ified licuid radwas;e and liquid effluent flow diagram are provided in Figures 10-2 and 10-3.

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LASALLE Revision 1.9 April 1998

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(j The liquid radwaste treatment system is designed and installed to reduce radioactive liquid effluents by collecting the liquids, providing for retention or holdup, and providing for treatment by filter, demineralizer, or evaporator for the purpose of reducing the total radioactivity prior to release to the environment. The system is described in Section 11.2.2 of the LaSalle UFSAR.

10.2.1.1 Radwarie Discharge Tanks There are two discharge tanks (1(2)WF05T,25,000 gallons each) which receive water for discharge to the lilinois River via the cooling lake blowdown.

10.2.1.2 Cooling Pond Blowdown Cooling Pond Blowdown is the liquid discharge line to the Illinois River. The Cooling Pond Blowdown has a flow monitoring device as well as a compositor to meet the sampling requirements of ODCM Table 12.3.1-2.

10.2.2 Radiation Monitors 10.2.2.1 Liquid Radwaste Effluent Monitor Monitor OD18-N907 monitors all releases from the release tanks. On hi-hi alarm the monitor automatically initiates closure of valves OWLO67 and trips the radwaste discharge pump to terminate the release.

Pertinent information on the monitor and associated control devices is provided in LaSalle UFSAR Section 11.5.2.3.3.

w b 10.2.2.2 Service Water Effluent Monitors Monitors 1/(2)D18-N912 continuously monitor the service water effluent. On high alarm service water discharge may be terminated manually. No control device is initiated by these monitors.

Pertinent informaticn on these monitors is provided in LaSalle UFSAR 11.5.2.3.2.

10.2.2.3 RHR Heat Exchanger Cooling Water Effluent Monitors Instrument channels 1/(2)D18-N906/8 continuously monitor the RHR heat exchanger cooling water effluent. On high alarm the operating loop may be terminated manually and the redundant loop brought on line. No control device is initiated by these monitors.

Pertinent information on these monitors is provided in LaSalle UFSAR Section 11.5.2.3.4.

10.2.3 Alarm and Trip Setpoints 10.2.3.1 Setpoint Calculations Alarm and trip setpoints of liquid effluent monitors at the principal release points are established to ensure that the limits of RETS are not exceeded in the unrestricted area.

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LASALLE Rwision 1.9 Apnl 1998 10.2.3.1.1 Liquid Radwaste Effluent Monitor The monitor setpoint is found by solving equation 10-5 for the total isotopic activity.

P $ K x [I C,' / I (C,' /10xDWC,)] x [(F + dF'm,,)/F' max] (10-5)

P Release Setpoint [ cpm]

K [I (K, x C, x WJ/ I C'] [ cpm / C1/ml]

K, Counting efficiency for radionuclide i [ cpm / Cl/ml]

We Weighting Factor Cl Concentration of radionuclide i in the release tank. [ Cl/ml]

F'=

m Maximum Release Tank Discharge Flow Rate [gpm]

The maximum flow rate is 45 gpm.

DWC Derived Water Concentration [ Cl/ml]

of radionuclide i The concentration of radionuclide i given in Appendix B, Table 2, Column 2 to ,e 10CFR20.1001-2402.

I 10 Multipiier associated with the limits specified in 12.3.1.A.

N Dilution Flow [gpm]

i 10.2.3.1.2 Service Water Effluent Monitors The monitor setpoint is established at two times the background count rate (not to exceed 10000 cpm).

10.2.3.1.3 RHR Heat Exchanger Cooling Water Monitors The monitor setpoint is established at two times the background count rate (not to exceed 10000 cpm).

10.2.3.2 Discharge Flow Rates 10.2.3.2.1 Release Tank Discharge Flow Rate Prior to each batch release, a grab sample is obtained.

The results of the analysis of the sample determine the discharge rate of each batch as follows:

d F'm , = 0.1 x [F /I(C,/10xDWC)] x MF (1 The summation is over radionuclides I.

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LASALLE Revision 1.9 April 1998 O 0.1 Reduction factor for conservatism.

k' F'm. Maximum Permitted Discharge Flow Rate [gpm)

The maximum permitted flow rate from the radwaste discharge tank.

F" Dilution Flow [gpml C, Concentration of Radionuclide iin the Release Tank [ Ci/mL]

The concentration of radioactivity in the radwaste discharge tank based on measurements of a sample drawn from the tank.

DWC, Maximum Permissible Concentration of Radionuclide i

[ Ci/ml]

The concentration of radionuclide i given in Appendix B Table 2, Column 2 to '

10CFR20.1001-2402.

I 10 Multiplier associated with the limits specified in 12.3.1.A.

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MF Multiplication Factor F'm. < 0.5; MF = 3 1

0.5 < F'mn 5; MF = 5 O

(v 10.2.3.3 5 < F'm ; MF = 7.5 Release Limits -

Release limits are determined from RETS. Calculated maximum permissible discharge rates are divided by 10 for conservatism and to ensure that release concentrations are well below applicable derived water concentrations (DWC).

10.2.3.4 Release Mixture For the liquid radwaste effluent monitor the release mixture used for the setpoint determination is the radionuclide mix identified in the grab sample isotopic analysis plus four additional radionuclides. The additional radionuclides are H 3, Fe-59, Sr-89, and Sr-90. The quantities to be added are obtained from the most current analysis for these four radionuclides.

For all other liquid effluent monitors no release mixture is used because the setpoint is established at "two times background."

10.2.3.5 Conversion Factors The readout for the liquid radwaste effluent monitor is in CPM. The calibration constant is based on the detector sensitivity to Cs-137/Ba-137 and an energy response curve.

10.2.3.6 Liquid Dilution Flow Rates A conservative maximum blowdown flowrate of 20,000 gpm is used for all radwaste discharge calculations unless actual blowdown flow is determined to be less.

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LASALLE Revision 1.9 l April 1998 l

l 10.2.4 Allocation of Effluents from Common Release Points Liquid releases from the Station will be allocated one half to Unit 1 and one half to Unit 2.

Other potential pathways (i.e., RHR) are allocated to their respective unit.

10.2.5 Projected Doses for Releases Doses are not calculated prior to release. Dose contributions from liquid effluents are determined in accordance with the RETS and station procedures.

10.3 SOLIDIFICATION OF WASTE / PROCESS CONTROL PROGRAM The process control program (PCP) contains the sampling, analysis, and formulation determination by which solidification of radioactive wastes from liquid systems is ensured.

Figure 10-4 is a simplified diagram of solid radwaste processing.

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LASALLE Revision 1.9 I April 1998 i O TABLE 10-1 Assumed Composition of the LaSalle Station Noble Gas Effluent Percent of Isotope Total Annual Release Kr-83m 4.5E-3 Kr-85m 8.0E-3 Kr-85 2.6E-5 Kr-87 2.6E 2 Kr-88 2.6E-2 Kr-89 1.7E-1 l

Kr-90 3.7E 1  !

Xe-131m 2.0E 5 Xe 133m 3.8E-4 Xe-133 1.1E 2 p Xe-135m 3.4E-2 ,

Xe-135 2.9E-2 Xe-137 2.0E-1 Xe-138 1.2E-1 O

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LASALLE Revision 2 April 1998 CHAPTER 11 h RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM TABLE OF CONTENTS CHAPTER TITLE PAGE 11 Radiological Environmental Monitoring Program 11-1 LIST OF TABLES NUMBER T!TLE PAGE 11-1 Radiological Environmental Monitoring Program 11-2 LIST OF FIGURES NUMBER T!TLE

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11-1 Fixed Air Sampling Sites and Outer Ring TLD Locations 11-9 c

11-2 inner Ring TLD Locations 11-10 11-3 Ingestion and Waterbome Exposure Pathway Sample Locations 11-11 O

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(./ RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM The Radiological Environmental Monitoring Program for the environs around LaSalle Station is given in Table 11-1.

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LaSalle Station p Chapter 12 Change Summary V ODCM Revision 1.9, April 1998 Pane Channe Descriotion 12-i Added file designator identification to bottom of page.

12-ii Updated revision number.

12-iii Updated page numbers.

12-iv Updated page numbers.

12-8 Added clarifier to Applicability statement to define that requirement is applicable only when there is flow in the system.

12-9 Deleted EPNs for the Cooling Pond Blowdown Pipe.

12-10 Added clarifying statement to Action 101 defining requirements if action exceeds 30 days.

12-15 O Added note to bottom of table notations explaining actions required if 30 day period is exceeded.

12-23 Corrected Table number designator and corrected typographical error.

12-25 Corrected typographical error in Operability Requirement section.

Amended ACTION defining requirements when the limits are exceeded to reference the appropriate reporting requirement in 10 CFR 50.

12-27 Added wording to Bases to allow for system bypass to portable waste treatment equipment.

12-34 Corrected typographical error.

12 37 Amended ACTION defming requirements when the limits are exceeded to reference the appropriate reporting requirements in 10 CFR 50.

12-38 Amended ACTION defining requirements when the limits are exceeded to reference the appropriate reporting requirements in 10 CFR 50.

12-47 Deleted ". "if front of">"in the equation.

12-54 Added qualifying statements to sampling requirements for food products.

12-55 Corrected typographical error.

12-57 Changed the H-3 LLD for water to 2,000 pCi/l to be consistent with the Generic Letter 89-01 requirements for environmental samples.

12-59 Added notation (7) deftmng that an LLD of 200 pCi/l for H-3 will still be required for off-site analyses.

12-62 Corrected typographical.

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LASALLE Revision 1.9 l April 1998 l

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CHAPTER 12 1

SPECIAL NOTE The transfer of the Radiological Effluent Technical Specifications (RETS) to the ODCM has been approved by the Nuclear Regulatory Commission in Amendments 85/69.

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LAEALLE ANNEXINDEX &1 l CHAPTER 12 l

Revision 1.9 l

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LASALLE Revision 1.9 Apnl 1998 CHAPTER 12 RADIOACTIVE EFFLUENT TECHNICAL STANDARDS (RETS)

TABLE OF CONTENTS PAGE 12.0 RADIOLOGICAL EFFLUENT TECHNICAL STANDARDS 12-1 12.1 DEFINITIONS 12-4

]

12.2 INSTRUMENTATION 12-8

1. Radioactive Liquid Effluent Monitoring Instrumentation 12-8
2. Radioactive Gaseous Effluent Monitoring instrumentation 12-13 12.3 LIQUID EFFLUENTS 12-19
1. Concentration 12-19
2. Dose 12-25
3. Liquid Waste Treatment System 12-27 12.4 GASEOUS EFFLUENTS 12-29 i^ ~<
1. Dose Rate 12-29
2. Dose - Noble Gasc c 12-37
3. Dose - lodine-131, lodine-133, Tritium, and Radionuclides in Particulate Form 12-38
4. Gaseous Radwaste Treatment System 12-40
5. Ventilation Exhaust Treatment System 12-41
6. Venting or Purging 12-42
7. Total Dose 12-43
8. Main Condenser 12-45
9. Dose Limits for Members of the Public 12-46 12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 12-47
1. Monitoring Program 12-47
2. Land Use Census 12-60
3. Interlaboratory Comparison Program 12-61 12.6 REPORTING REQUIREMENTS 12-62
1. Annual Radiological Environmental Operating Report 12-62
2. Radioactive Effluent Release Report 12-63
3. Offsite Dose Calculation Manual (ODCM) 12-64
4. Major Changes to Radioactive Waste Treatment Systems 12-65 12-lii

LASALLE Raision 1.9 April 1998 O

CHAPTER 12 RADIOACTIVE EFFLUENT TECHNICAL STANDARDS (RETS)

UST OF TABLES PAGE 12.0-1 Effluent Compliance Matrix 12-2 17.0-2 REMP Compliance Matrix 12-3 12.1-1 Frequency Notation 12-7 12.2.1-1 Radioactive Liquid Effluent Monitoring Instrumentation 12-9 12.2.1-2 Radioactive Liquid Effluent Monitoring Instrumentation Surveillance Requirements 12-11 12.2.2-1 Radioactive Gaseous Effluent Monitoring instrumentation 12-14 12.2.2-2 Radioactive Gaseous Effluent Monitoring Instrumentation Surveillance Requirements 12-16 12.3.1-1 Allowable Concentration (AC) of Dissolved or Entrained Noble Gases Released from

  • the Site to Unrestricted Areas in Liquid Waste 12-20 12.3.1-2 Radioactive Liquid Waste Sampling and Analysis Program 12-21 12.4.1-1 Radioactive Gaseous Waste Sampling and Analysis Program 12-31 12.5-1 Radiological Environmental Monitoring Program 12-50 12.5-2 Reporting Levels for Radioactivity Concentrations in Environmental Samples 12-56 12.5-3 Detection Capabilities for Environmental Sample Analysis 12-57 O

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LASALLE Revision 1.9 April 1998 12.0 RADIOLOGICAL EFFLUENT TECHNICAL STANDARDS Oi Chapter 12 of the LaSalle Station ODCM is a compilation of the various regulatory requirements, surveillances and bases, commitments and/or components of the radiological effluent and environmental monitoring programs for LaSalle Station. To assist in the understanding of the relationship between effluent regulations, ODCM equations, RETS (Chapter 12 section) and related Technical Specification requirements, Table 12.0-1 is a matrix which relates these various components. The Radiological Environmental Monitoring Program fundamental requirements are contained within this chapter, with LaSalle specific information in Chapter 11 and a supplemental matrix in Table 12.0-2.

12-1

I LASALLE Ravision 1.9 April 1998 I

l TABLE 12.0-1 EFFLUENT COMPLlANCE MATRIX Regulation Dose to be compared to limit ODCM RETS Technical Equation Specification 10CFR50 1. gamma air dose and beta air dose A-1 12.4.2 6.2.F.4.h Appendix I due to airbome radioactivity in A-2 effluent plume.

1.a whole body and skin dose due to airbome radioactivity in effluent A-6 N/A N/A plume are reported only if certain A-7 gamma and beta air dose criteria l are exceeded.

2. CDE for all organs and all four age groups due to iodines and particulates in effluent plume. All A-13 12.4.3 6.2.F.4.i pathways are considered.
3. CDE for all organs and all four age groups due to radioactivity in liquid effluents. A-29 12.3.2 6.2.F 4.d 10CFR20 1. TEDE, totaling all deep dse A-38 12.4.9 6.2.F.4.c equivalent componer t sdirect, ground and plume sr..'e) and ,

twmmitteQ effect% '..f.e _

equivalents (d. pathw Jys, both airbome and liquid-bome). CDE evaluation is made for adult only using FGR 11 data base.

40CFR190 1. Whole body dose (DDE) due to A-35 12.4.7 6.2.F.4.k (now by direct dose, ground and plume reference, also shine from all sources at a station.

part of 10CFR20) 2. Organ doses (CDE) to an adult due A 13 to all pathways.

Technical 1. " Instantaneous" whole body (DDE), A-8 "P.4.1 6.2.F.4.g Specifications thyroid (CDE) and skin (SDE), dose A-9 rates to an adult due to A-28 radioactivity in airbome effluents.

For the thyroid dose, only 6.2.F.4.b inhalation is considered.

2. " Instantaneous" concentration limits A-32 12.3.1 for liquid effluents.

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} Technical 1. Radiological Effluent Releaso NA 12.6.2 6.6.A.4 l Specifications 12-2 l

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LASALLE Revision 1.9 April 1993 Table 's2.0 2 REMP Compliance Matrix Regulation Component RETS Technical Specification 10CFR50 Implement environmental monitoring program. 12.5.1 6.2.F.5 Appendix I Section IV.B.2 Technical Land Use Census 12.5.2 6.2.F.5.b Specifications Technical Intertaboratory Comparison Program 12.5.3 6.2.F.5.c Specifications Q e V - .

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i LASALLE Revision 1.9  !

April 1998 12.1 DEFINITIONS 12.1.1 ACTION - ACTION shall be that part of a requirement which prescribes remedial measures required under designated conditions. -j l

12.1.2 CHANNEL CAllBRATION - A CHANNEL CAllBRATION shall be the adjustment, as necessary, of the channel output such that it responds with the necessary range and accuracy to known values of the parameter which the channel monitors. The CHANNEL CALIBRATION ]

shall encompass the entire channel including the alarm and/or trip functions, and shall include the CHANNEL FUNCTIONAL TEST. The CHANNEL CAllBRATION may be performed by any series of sequential, overlapping or total channel steps such that the entire channel is calibrated.

I 12.1.3 CHANNEL CHECh - A CHANNEL CHECK shall be the qualitative assessment of channel (

behavior during cperation by observation. This determination shall include, where possible, l

comparison of the channel indication and/or status with other indications and/or status derived l from independ9nt instrument channels measuring the same parameter.

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12.1.4 CHANNEL T UNCTIONAL TEST- A CHANNEL FUNCTIONAL TEST shall be:

a. Analog channels - the injection of a simulated signal into the channel as close to the sensor as practical to verify OPERABILITY including alarm and/or trip functions and I channel failure trips.
b. Sistable channels - the injection of a simulated signal into the sensor to verify OPERABILITY including alarm and/or trip functions. ,

The CHANNEL FUNCTIONAL TEST may be performed by any series of sequential, I ovvrlapping, or total channel steps such that the entire channel is tested. l 12.1.5 DOSE EQUIVALENT l 131 - DOSE EQUIVALENT l-131 shall be that concentration of I-131, {

microcuries/ gram, which alone would produce the same thyroid dose as the quantity and j isotopic mixture of I 131,1132,1133,1134 and 1135 actually present. The thyroid dose I conversion factors used for this calculation shall be those listed in Table ill of TID-14844,

" Calculation of Distance Factors for Power and Test Reactor Sites."

12.1.6 FREQUENCY - Table 12.1-1 provides the definitions of various frequencies for which surveillances, sampling, etc. are performed unless defined otherwise. The 25% variance shall not be applied to Operability Action statements. The bases to Technical Specification 4.0.2 provide clarifications to this requirement.

12.1.7 GASEOUS RADWASTE TREATMENT SYSTEM - A GASEOUS RADWASTE TREATMENT SYSTEM shall be any system designed and installed to reduce radioactive gaseous effluents by collecting primary coolant system offgases from the primary system and providing for delay or holdup for the purpose of reducing total radioactivity prior to release to the environment.

12.1.8 MEMBER (S) OF THE PUBLIC - means an individual except when that individual is receiving an occupational dose.

12.1,9 OCCUPATIONAL DOSE - means the dose received by an individual in the course of employment in which the individual's assigned duties involve exposure to radiation and/or to 12-4 i I

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LASALLE Rtvision 1.9 ,

April 1998 I radioactive material from licensed and unlicensed sources of radiation, whether in the i possession of the licensee or other person. Occupational dose does not include dose from j background radiation as a patient from medical practices, from voluntary participation in j medical research programs, or as a member of the public.

12.1.10 OPERABLE - OPERABILITY - A system, subsystem, train, component or device shall be OPERABLE or have OPERABILITY when it is capable of performing its specified function (s), ,

and when all necessary attendant instrumentation, controls, cooling or seal water, lubrication or other auxiliary equipment that are required for the system, subsystem, train, component or

{

device to perform its function (s) are also capable of performing their related support function (s).

12.1.11 PROCESS CONTROL PROGRAM - The PROCESS CONTROL PROGRAM (PCP) shall contain the current formulas, sampling, analyses, test, and determinations to be made to i ensure that processing and packaging of solid radioactive wastes based on demonstrated )

processing of actual or simulated wet solid wastes shall be accomplished in such a way as to assure compliance with 10 CFR Parts 20,61, and 71, State regulations, burial ground (

requirements, and other requirements goveming the disposal of solid radioactive waste.

12.1.12 PURGE - PURGING - PURGE or PURGING shall be the controlled process of discharging air or gas from a confinement to maintain temperature, pressure, humidity, concentration or other operating condition, in such a manner that replacement air or gas is required to purify the confinement.

12.1.13 RATED THERMAL POWER - RATED THERMAL POWER shall be a total reactor core heat transfer rate to the reactor coolant of 3323 MWT.

12.1.14 SITE BOUNDARY - The SITE BOUNDARY shall be that line beyond which the land is neither ow.:ed, nor leased, nor otherwise controlled by the licensee.

12.1.15 SOLIDIFICATION - SOLIDIFICATION shall be the conversion of radioactive wastes from liquid systems to a homogeneous (uniformly distributed), monolithic, immobilized solid with definite volume and shape, bounded by a stable surface of distinct outline on all sides (free-standing).

12.1.16 SOURCE CHECK - A SOURCE CHECK shall be the qualitative assessment of channel response when the channel sensor is exposed to a radioactive source.

12.1.17 THERMAL POWER - THERMAL POWER shall be the total reactor core heat transfer rate to l the reactor coolant.  !

l 12.1.18 UNRESTRICTED AREA BOUNDARY means an area, access to which is neither limited nor I controlled by the licensee.

12.1.19 VENTILATION EXHAUST TREATMENT SYSTEM - A VENTILATION EXHAUST l TREATMENT SYSTEM shall be any system designed and installed to reduce gaseous radiciodine or radioactive material in particulate form in effluents by passing ventilation or vent exhaust gases through charcoal adsorbers and/or HEPA filters for the purpose of removing lodines or particulates from the gaseous exhaust system prior to the release to the environment (such a system is not considered to have any effect on noble gas effluents).

Engineered Safety Feature (ESF) atmospheric cleanup systems are not considered to be VENTILATION EXHAUST TREATMENT SYSTEM components.

12-5

LASALLE Revision 1.9 April 1998 12.1.20 VENTING - VENTING shall be the controlled pro;ess of discharging air or gas from a confinement to maintain temperature, pressure, humidity, concentration or other operating condition, in such a manner that replacement air or gas is not provided or required during VENTING. Vent, used in system names, does not imply a VENTING process.

12.1.21 Definitions Peculiar te Estimating Dose to Members of the Public Using the ODCM Computer Program.

a. ACTUAL - ACTUAL refers to using known release data to project the dose to members of the public for the previous time period. This data is stored in the database and used to demonstrate compliance with the reporting requirements of Chapter 12.6.
b. PROJECTED - PROJECTED refers to using known release data from the previous time period or estimated release data to forecast a future dose to members of the public. This data is not incorporated into the database.

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LASALLE R; vision 1.9 April 'e 998 t

l TABLE 12.1 1 F.RjiOUENCY NOTATION

  • l l NOTATION FREQUENCY E

S - Shiftly At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

D - Daily At least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

W - Weekly At least once per 7 days.

M - Monthly At least once per 31 days.

Q - Quarterly At least once per 92 days.

SA - Semiannually At least once per 184 days.

A - Annually At least once per 366 days.

R - Refueling cycle At least once per 18 months.**

S/U - Startup Prior to each reactor startup.

P - Prior Prior to each radioactive release. '

N.A. - Not applicable.

Each frequency requirement shall be performed within the specified time interval with the maximum allowable extension not to exceed 25% of the frequency interval. The 25% variance shall not be applied to Operability Action statements. The bases to Technical Specification 4.0.2 provide clarifications to this requirement. These frequency notations do not apply to the Radiological Environmental Monitoring Program (Section 12.5).

    • Once per 24 months upon Technical Specification approval.

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LASALLE Rsvision 1.9 April 1998 i

V 12.2 INSTRUMENTATION 12.2.1 Radioactive Liauid Effluent Monitorina Instrumentation Operability Reauirements 12.2.1.A The radioactive liquid effluent monitoring instrumentation channels shown in Table 12.2.1-1 shall be OPERABLE with their alarm / trip setpoints set to ensure that the limits of Section 12.3.1.A are not exceeded. The alarm trip setpoints of these channels shall be determined in accordance with the ODCM Chapter 10.

Apolicability: At all times, when flow is present in the system.

Action:

a. With a radioactive liquid effluent monitoring instrumentatior, channel alarm / trip setpoint less conservative than required, immediately suspend the release of radioactive liquid effluents monitored by the affected channel or declare the channel inoperable.
b. With less than the minimum number of radioactive liquid effluent monitoring instrumentation channels OPERABLE, take the ACTION shown in Table 12.2.1-1. Restore the inoperable instrumentation to OPERABLE status within the time specified in the ACTION or, explain in the next Radioactive Effluent Release Report why this inoperability was not corrected within the time specified.

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( Surveillance Reauirements 12.21.B Each radioactive liquid effluent monitoring instrumentation channel shall be demonstrated OPERABLE by performance of the CHANNEL CHECK, SOURCE CHECK, CHANNEL FUNCTIONAL TEST and CHANNEL CALIBRATION operations at the frequencies shown in Table 12.2.1-2.

Bases 12.2.1.C The radioactive liquid effluent monitoring instrumentation is provided to monitor and control, as applicable, the releases of radioactive materials in liquid effluents during actual or potential releases of liquid effluents. The alarm / trip setpoints for these instruments shall be calculated in accordance with the procedures in the ODCM to ent ure that the alarm / trip will occur prior to exceeding the limits of RETS. The OPERABILITY and use of this instrumentation is consistent wi.h the requirements of General Design Criteria 60,63, and 64 of Appendix A t ) 10 CFR Part 50.

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12-8

l LASALLE Ravision 1.9 April 1998 TABLE 12.2.1-1 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION MINIMUM CHANNELS INSTRUMENT OPERABLE ACTION

1. GAMMA SCINTILLATION MONITOR PROVIDING ALARM AND AUTOMATIC TERMINATION OF RELEASE
a. . Liquid Radwaste Effluent Line 1 100
2. GAMMA SCINTILLATION MONITORS PROVIDING ALARM BUT NOT PROVIDING AUTOMATIC TERMINATION OF RELEASE
a. Service Water System Effluent Line (Unit 1) 1 101
b. Service Water System Effluent Line (Unit 2) 1 101
c. RHR Service Water (Line A) Effluent Line (Unit 1) 1 101
d. RHR Service Water (Line A) Effluent Line (Unit 2) 1 101
e. RHR Service Water (Line B) Effluent Line (Unit 1) 1 101 l
f. RHR Service Water (Line B) Effluent Line (Unit 2) 1 101
3. FLOW RATE MEASUREMENT DEVICES
a. Liquid Radwaste Effluent Line 1 102
b. Cooling Pond Blowdown Pipe
  • 1 102
  • Same as River Discharge Blowdown Pipe.

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LASALLE RGvision 1.9 April 1998 RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION TABLE 12.2.1-1 (Continued)

TABLE NOTATION ACTION 100 -

With the number of OPERABLE channels less than required by the Minimum Channels OPERABLE requirement, effluent releases may continue for up to 14 days provided that prior to initiating a release:

a. At least two independent samples are analyzed in accordance with Section 12.3.1.B.1, and
b. At least two technically qualified members of the Facility Staff independently verify the release rate calculations and discharge line valving; Otherwise, suspend release of radioactive effluents via this pathway.

ACTION 101 -

With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue for up to 30 days provided that, at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, grab samples are collected and analyzed for principal gamma emitters and 1-131 at a lower limit of detection as specified in Table 12.3.12. If effluent releases continue via this pathway beyond 30 days, continue to collect and analyze samples, then explain in the next Radioactive Effluent Release Report why this inoperability was not corrected within the time specified. ,

ACTION 102 -

With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, actual radioactive releases in progress via this pathway may continue provided the flow rate is estimated at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. Pump curves for Instrument 3a. or for known valve positions for Instrument 3b, may be used to estimate flow. Actual releases of radioactive effluent will not be initiated without an OPERABLE channel.

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TABLE NOTATION (1) The CHANNEL FUNCTIONAL TEST shall also demonstrate that automatic isolation of this pathway and control alarm annunciation occurs if any of the following conditions exist:

1. Instrument indicates measured levels above the alarm / trip setpoint.
2. Loss of power.
3. Instmment alarms on downscale failure.
4. Instrument controls not set in Operate or High Vo!! age mode.

(2) The CHANNEL FUNCTIONAL TEST shall also demonstrate that control room alarm annunciation occurs if any of the following conditions exist:

1. Instrument indit,c.tes measured levels above the alarm setpoint.
2. Loss of power.
3. Instrument alarms on downscale failure.
4. Instrument controls not set in Operate or High Voltage mode.

i (3) The initial CHANNEL CAllBRATION shall be performed using one or more of the reference radioactive standards certified by the National institute of Standards and Technology (NIST)or using standards that have been obtained from suppliers that participate in measuren'ent assurance activities with NIST. These standards shall permit calibrating the system over its intended range of energy and measurement range.

For subsequent CHANNEL CAllBRATION, the initial reference radioactive standards or radioactive sources that have been related to the initial calibration shall be used.

(4) CHANNEL CHECK shall consist of verifying indication of flow during periods of release. CHANNEL CHECK shall be made at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> on days in which continuous, periodic, or batch releases are made.

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LASALLE R'svision 1.9 i April 1998 12.2 (NSTRUMENTATION 12.2.2 Radioactive Gaseous Effluent Monitoring instrumentation

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Operability Reauirements  !

12.2.2.A The radioactive gaseous effluent monitoring instrumentation channels shown in Table 12.2.2-1 shall be OPERABLE with their alarm / trip setpoints set to ensure that the limits of Section 12.4.1.A are not exceeded. The alarm / trip setpoints of these channels shall be determined in accordance with the ODCM.

Aoolicability: As shown in Table 12.2.2-1.

Action:

a. With a radioactive gaseous effluent monitoring instrumentation channel alarm / trip setpoint less conservative than required, immediately suspend the release of radioactive gae",ous effluents monitored by the affected channel or declare the channel inoperable.
b. With less than the minimum number of radioactive gaseous effluent monitoring instrumentation channels OPERABLE, take the ACTION shown in Table 12.2.2-1.

Surveillance Reouirements 12.2.2.B Each radioactive gaseous effluent monitoring instrumentation channel shall be demonstrated OPERABLE by performance of the CHANNEL CHECK, SOURCE CHECK, CHANNEL FUNCTIONAL TEST and CHANNEL CAllBRATION operations at the frequencies shown in Table 12.2.2-2. '

Base 12.2.2.C The radioactive gaseous effluent monitoring ' .strumentation is provided to monitor and control, as applicable, the releases of radioactive materials in gaseous effluents during actual or potential releases of gaseous effluents. The alarm / trip setpoints for these instruments shall be calculated in accordance with the procedures in the ODCM to ensure that the alarm / trip will occur prior to exceeding the limits of RETS.

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f q

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LASALLE Rsvision 1.9 April 1998 RADIOACTIVE GASEOUS FFFLUENT MONITORING INSTRUMENTATION

("N ]1FJLE 12.2.2-1 (Continued)

() TABLE NOTATION Af all times.

Wring effluent releases via this pathway.  :

  1. During operation of the main condenser air ejector. l
    1. During operation of the SBGTS. '

ACTION 110 - a. For the Main Condenser Offgas Treatment System Effluent Monitoring System:

With only one channel OPERABLE, place the inoperable channel in a tripped I condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. )

l With no channel OPERABLE, effluent releases via this pathway may continue for up to 30 days provided grab samples are taken at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and these samples are analyzed for noble gas gamma emitters within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. (See NOTE below.)

l

b. For the Low /Mid Range of the Main Stack Monitoring System or SBGTS Monitoring System:

With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, effluent releases via this pathway may continue for up to 30 days provided grab samples are taken at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and these samples are analyzed for noble gas gamma emitters within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at a lower limit of detection as specified in Table 12.4.1-1. (See NOTE below.)

[

\

n ACTION 111 - With the number of channels OPERABLE less than required by the Minimum Channels ,, )

(v) OPERABLE requirement, effluent releases via this pathway may continue for up to 30 days provided that within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after the channel has been declared inoperable, samples are i

continuously collected with auxiliary sampling equipment as required in Table 12.4.1-1. (See NOTE below.) l I

ACTION 112 - With the number of channels OPERABLE less than required by the Minimum Channels l OPERABLE requirement, effluent releases via this pathway may continue for up to 30 days l provided the flow rate is estimated at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. (See NOTE below.)

l ACTION 113 - With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, the output from the charcoal adsorber vessels may be released to the environment for up to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> provided:

a. The offgas treatment system is not bypassed, and
b. The offgas treatment delay system noble gas activity effluent downstream monitor is OPERABLE; Otherwise, be in at least STARTUP with the main steam isolation valves closed within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

NOTE: For Actions 110 through 112 above, effluent releases may continue beyond the 30 days as long as the applicable sampling requirements are met. Explain in the next Radioactive Effluent Release Report why the inoperability was not corrected within the time specified.

12-15

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LASALLE Rsvision 1.9 April 1998 l Ci RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE V REQUIREMENTS TABLE 12.2.2-2 (Continued)

TABLE NOTATION l At all times.

During effluent releases via this pathway.

  1. During operation of the main condenser air ejector.

1

## During operation of the SBGTS.

(1) The CHANNEL FUNCTIONAL TEST shall also demonstrate the automatic isolation capability of ,

this pathway for the following conditions: i l

1. Upscale.
2. Inoperative.

O .!

3. Downscale. 1

- l (2) The CHANNEL FUNCTIONAL TEST for the log scale monitor shall also demonstrate that control room alarm annunciation occurs for the following conditions:

1. Upscale. i l
2. Inoperative.
3. Downscale.

i (3) The initial CHANNEL CALIBRATION shall be performed using one or more of the reference radioactive standards certified by the National Institute of Standards and Technology (NIST) or using standards that nave been obtained from suppliers that participate in measurement  !

assurance activities with NIST. These standards shall peimit calibrating the system over its intended range of energy and measurement range. For subsequent CHANNEL CAllBRATION, the initial reference radioactive standards or radioactive sources that have been related to the initial calibration shall be used.

O 12-17

LASALLE Rsvision 1.9 April 1998 RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS TABLE 12.2.2-2 (Continued)

TABLE NOTATION (4) The CHANNEL FUNCTIONAL TEST shall also demonstrate that control room alarm annunciation occurs if any of the following conditions exists:

1. Instrument indicates measured levels above the alarm setpoint.
2. Loss of Counts er O

12-18

LASALLE Rsvision 1.9 April 1998 12.3 LIQUID EFFLUENTS 12.3.1 Concentration Operability Reauirements 12.3.1.A The concentration of radioactive material released from the site shall be limited to ten (10) times the concentration value in Appendix B, Table 2, Column 2 to 10CFR20.1001-20.2402 for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shah be limited to the concentrations specified in Table 12.3.1-1.

Analiembility: At all times.

8 210.0 With the concentration of radioactive material released from the site exceeding the above limits, immediately restore the concentration to within the above limits.

Surveillance Reauirements 12.3.1.B.1 The radioactivity content of each batch of radioactive liquid waste shall be

' determined prior to release by sampling and analysis in accordance with Table 12.3.1-2. The results of pre-release analyses shall be used with the calculational methods in the ODCM to assure that the concentration at the point of release is mainta;ned within the limits of Section 12.3.1.A.

12.3.1.B.2 Post release analyses of samples composited from batch releases shall be performed in accordance with Table 12.3.1-2. The results of the previous post-release analyses shall be used with the calculational methods in the ODCM to

( assure that the concentrations at the point of release were maintained within the limits of Section 1,2.3.1.A.

12.3.1.B.3 The radioactivity concentration of liquids discharged from continuous release points shall be determined by collection and analysis of samples in accordance with Table 12.3.1-2. The results of the analyses shall be used with the calculational methods in the ODCM to assure that the concentrations at the point of release are maintained within the limits of Section 12.3.1.A.

12.3.1.B.4 Identify outside temporary liquid holdup tanks within the site and restrict the

. quantity of radioactive material contained in specified tanks to provide assurance that in the event of an uncontrolled release of the tanks contents, the resulting concentrations would be less than the limits of Section 12.3.1.A. Refer to LaSalle Technical Specification 3/4.11.1.

Bases 12.3.1.C This requirement is provided to ensure that the concentration of radioactive materials released in liquid waste effluents from the site will be less than ten (10) times the concentration levels specified in Appendix B, Table 2 Column 2 to 10CFR20.1001-2402. This limitation provides additional assurance that the levels of radioactive materials in bodies of water outside the site will result in exposure within (1) the Section ll.A design objectives of Appendix 1,10 CFR 50, to an individual, and (2) the limits of 10 CFR 20.1301 to the population. In addition, this limit is associated with 40 CFR 141 which states concentration limits at the nearest downstream potable water supply.

12-19

LASALLE Rsvision 1.9 April 1998 TABLE 12.3.1-1 ALL OWABLE CONCENTRATION (AC) OF l DISSOLVED OR ENTRAINED NOBLE GASES RELEASED FROM THE SITE TO UNRESTRICTED AREAS IN LIQUID WASTE NUCLIDE AC(uCi/mIP Kr 85 m 2E-4 85 SE4 87 4E-5 88 9E-5 Ar41 7E-5 Xe 131 m 7E-4 133 m SE-4 133 6E-4 135 m 2E-4 ,

135 _ 2E-4 1

Computed from Equation 20 of ICRP Publication 2 (1959), adjusted for infinite cloud submersion in water, and R = 0.01 rem / week, p, = 1.0 gm/cm , and P,/P = 1.0.

I l

l 12-20

LASALLE Revision 1.9 April 1998

\[ ]'

v TABLE 12.3.1-2 RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM LIQUID SAMPLING MINIMUM TYPE OF LOWER LIMIT OF RELEASE TYPE FREQUENCY ANALYSIS ACTIVITY DETECTION (LLD)

FREQUENCY ANALYSIS (pCi/ml)'

A. Batch Waste P P Principal 5x10-7 ,

Release Each Batch Each Batch Gamma  !

Tanks' Emitters' 4

l-131 1x10 P M Dissolved and 1x10'5 One Batch /M Entrained Gases (Gamma Emitters) l P M H-3 1x10'5 l Each Batch Composite" i

Gross Alpha 1x10'7 l P Q Sr-89, Sr-90 5x10*

Each Batch Composite"

,r .,

4 Fe-55 1x10 B. Continuous Continuous

  • Composite
  • Gamma Emitters' Cooling Pond Blowdown 4

1-131 1x10 M M Dissolved and 1x10~5 Grab Sample Entrained Gases (Gamma Emitters)

Continuous

  • M H-3 1x10~5 Composite
  • Gross Alpha 1x10'7 Continuous
  • Q Sr-89, Sr-90 4 5x10 Composite

LASALLE Revision 1.9 I April 1998 i RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM TABLE 12.3.1-2 (Continued)

O TABLE NOTATION

a. The LLD is the smallest concentration of radioactive materialin a sample that will be detected with 95% probability with 5% probability of falsely concluding that a blank observation represents a "real" signal.

For a particular measurement system (which may include radiochemical separation):

4.66 s o LLD = E . V . 2.22x106. Y . exp (-AAt)

Where:

LLD is the "a priori" lower limit of detection as defined above (as microcurie per unit mass or volume),

so is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (as counts per minute),

E is the counting efficiency (as counts per transformation),

V is the sample size (in units of mass or volume), ,

8 2.22x10 is the number of transformations per minute per microcurie, Y is the fractional radiochemical yield (when applicable),

1 is the radioactive decay constant for the particular radionuclide and for composite samples, and At is the elapsed time between midpoint of sample collection and time of counting (for plant effluents, not environmental samp'es). For batch samples taken and analyzed prior to release, At is taken to be zero.

The value of s oused in the calculation of the LLD for a detection system shall t>e based on the actual observed variance of the background counting rate or of the count- g rate of the blank samples (as appropriate) rather than on an unverified theoretically predicted variance. Typical values of E V, Y, and at shall be used in the calculation.

Altemate LLD Methodolooy An attemate methodology for LLD determination follows and is similar to the above LLD equation:

l (2.71 + 4.65VB) Decay f LLD =

E q b Y t (2.22 x 10i 12-22

LASALLE R8 vision 1.9 April 1998 TABLE 12.3.1-2 (Continued)

O RADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATIONS Where:

B = background sum (counts)

E = counting efficiency q = sample quantity (mass or volume) b = abundance (if applicable)

Y= fractional radiochemical yield or collection efficiency (if applicable) t= count time (minutes) 2.22 x 10e = number of disintegrations per minute per rnicroCurie 2.71 + 4.65VB = k2 + (2k V2 VB), and k = 1.645 (k=value of the t' statistic from the single tailed t distribution at a significance level of .95 and infinite degrees ofereadom. This means that the LLD result represents a 95% detection probability with a 5% probability of falsely concluding that the nuclide is present when it is not or that the nuclide is not present when it is.)

O Decay = e*^'[ ART /(1-e*"'))[ATa /(1-e*'d)) if applicable 1 = radioactive decay consteht (units consistent with At. RT and Ta)

At = " delta t", or the elapsed time between sample collection or the midnoint of sample collection and the time the count is started, depending on the hps of sample (units consistent with A)

RT = elapsed real time, or the duration of the sample count (units consistent with A)

To = sample deposition time, or the duration of analyte collection onto the sample media (units consistent with A)

The LLD may altemately be determined using installed radioanalytical software, if -

available. In addition to determining the correct number of channels over which to total -

the background sum, utilizing the software's ability to perform decay corrections (i.e.

during sample collection, from sample collection to start of analysis, and during counting), this attemate method will result in a more accurate determination of the LLD.

It should be recognized that the LLD is defined as a before the fact limit representing the espability of a measurement system and not as an after the fact limit for a pt rticular measurement.

O I

12-23

T LASALLE Rsvision 1.9 l April 1998 l ADIOACTIVE LIQUID WASTE SAMPLING AND ANALYSIS PROGRAM {

l TABLE 12.3.12 (Continued) {

TABLE NOTATION

b. A composite sample is one in which the quantity of liquid sampled is proportional to the quantity of liquid waste discharged and in which the method of sample employed results in a specimen which is representative of the liquids released.
c. To be representative of the quantities and concentrations of radioactive materials in liquid effluents, samples shall be collected if, proportion to the rate of flow of the effluent stream. Prior to analyses, all samples taken for the composite shall be thoroughly mixed in order for the composite sample to be representative of the effluent release.
d. A batch release is the discharge of liquid waste of a discrete volume. Prior to sampling for analyses, each batch shall be isolated, and then thoroughly mixed tp assure representative sampling.

e .~ A continuous release is the discharge of liquid wastes of a nondis volume of system that has an input flow during the continuous release.

f. The principal gamma emitters for which the LLD specification applies exclusively are the following radionuclides: Mn-54, Fe-59, Co-58, Co-60, Zn-65, Mo-99, Cs-134, Cs-137, Ce-141, .,

and Ce-144. This list does not mean that only these nuclides are to be detected and reported.

Other peaks which are measurable and identifiable, at the 95% confidence level, together with the above nuclides, shall also be identified and reported.

)

12-24

LASALLE Rsvision 1.9 April 1998 12.3 QQM9 EFFLUENTS 12.3.2 Dose Qcerability Recuirements 12.3.2.A The dose or dose commitment to an individual from radioactive material's in liquid effluents released, from each reactor unit, from the site shall be limited:

a. During any calendar quarter to less than or equal to 1.5 mrem to the total body and to less than or equal to 5 mrem to any organ, and
b. During any calendar year to less than or equal to 3 mrem to the total body and to less than or equal to 10 mrem to any organ. l APPLICABILITY: At all times.

ACTION:

a. With the calculated dose from the release of radioactive materials in liquid effluents exceeding any of the above limits, in lieu of any other report required by LaSalle Technical Specification 6.6.A, prepare and submit to the Commission, pursuant to 10CFR50, Appendix 1, Section IV.A, a report which identifies the cause(s) for exceeding the limit (s) and defines the corrective actions to be taken to reduce the releases of radioactive materials in liquid effluents during the remainder of the current calendar quarter and during the subsequent three calendar quarters, so that the cumulative dose or dose commitmer,t to an individual from these releases is within 3 mrem to the b

d total body and 10 mrem to any organ. The Report shall also include the '

radiological impact on finished drinking water supplies at the nearest

~

downstream drinking water source. The Report is due to the NRC within 30 days from the end of the quarter in which the release occurred.

Surveillance Reauirements 12.3.2.B Dose Calculations- Cumulative dose contributions from liquid effjuents shall be determined in accordance with the ODCM at least once per 31 days, when liquid discharges are performed.

Bases 12.3.2.C This requirement is provided to implement the requirements of Sections ll.A,01.A and IV.A of Appendix 1,10 CFR Part S0. The Limiting Condition for Operation implements to guides set forth in Section ll.A of Appendix 1. The ACTION statements provide the required operating flexibility and at the same time implement the guides set forth in Section IV.A of Appendix 1 to assure that the releases of radioactive material in liquid effluents will be kept "as low as is reasonably achievable." Also, for fresh water sites with drinking water supplies which can be potentially affected by plant operations, there is reasonable assurance that the operation of the facility will not result in radionuclide concentrations in the finished drinking waterthat are in excess of the requirements of 40 CFR 141. The dose calculations in the ODCM implement the requirements in Section Ill.A of Appendix I that conformance with the guides of Appendix 1 be shown by calectation.al procedures based on models and data, such that the actual exposure of an individual through appropriate pathways is unlikely to be 12-25 l

LASALLE Revision 1.9 April 1998 substantially underestimated. The equations specified in the ODCM for calculating l the doses due to the actual release rates of radioactive materials in liquid effluents are consistent with the methodology provided in Regulatory Guide 1.109,

" Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix 1,"

Revision 1 October 1977 and Regulatory Guide 1.113," Estimating Aquatic Dispersion of Effluents from Accidental and Routine Reactor Releases for the Purpose of implementing Appendix 1," April 1977.

This requirement applies to the release of radioactive materials in liquid effluents from each reactor at the site. For units with shared radwaste treatment systems, the liquid effluents from the shared are proportioned among the units sharing that system.

G' O

12-26

I LASALLE Revision 1.9 l April 1998 l

12.3 LIQUID EFFLUENTS l () 12.3.3 Liquid Waste Treatment System Operability Reauirements l 12.3.3.A The liquid radwaste treatment system shall be OPERABLE. The appropriate portions of the system shall be used to reduce the radioactive materials in liquid wastes prior to their discharge when the projected doses due to the liquid effluent j from each reactor unit, from the site, when averaged over 31 days, would exceed O.06 mrem to the total body or 0.2 mrem to any organ.

l Apolicability: At all times.

l Action:

a. With the liquid radwaste treatment system inoperable for more than 31 days or l

with radioactive liquid waste being discharged without treatment and in excess of the above limits, in lieu of any other report required by LaSalle Technical Specification 6.6.A, prepare and submit to the Commission within 30 days pursuant to LaSalle Technical Specification 6.6.C. a Special Report which includes the following information:

1. Identification of the inoperable equipment or subsystems and the reason for inoperability,
2. Action (s) taken to restore the inoperable equipment to OPERABLE status, and
3. Summary description of action (s) taken to prevent a recurrence.

/n)

'w.)

Surveillance Reauirements-12.3.3.B.1 Doses due to liquid releases shall be projected at least once per 31 days when releases are to be performed, in accordance with the methods in the ODCM.

12.3.3.B.2 The liquid radwaste treatment system sha!! be demonstrated OPERABLE by operating the liquid radwaste treatment system equipment for at least 30 minutes at least once per 92 days unless the liquid radwaste system has been utilized to process radioactive liquid effluents during the previous 92 days.

Bases 12.3.3.C The OPERABILITY of the liquid radwaste treatment system ensures that this system will be available for use whenever liquid effluents require treatment prior to release to the environment. The requirement that the appropriate portions of this system be used when specified provides assurance that the releases of radioactive materials in liquid effluents will be kept "as low as is reasonably achievable." A system bypass allows connection to portable waste treatment equipment. This enables the efficient processing of liquid radwaste through the use of state-of-the-art radwaste processing technology. The portable radwaste treatmerit system may be used in lieu of various portions of the liquid radwaste treatment system including the evaporator. During extended shutdown or low power operation, i.e.,

> 92 days, when steam is not available to the concentrators and when a portable waste treatment is not used, Surveillance Requirement 12.3.3.B.2 may be extended to 180 days. This specification implements the requirements of 10 CFR

(

>D N)4 12-27

1 LASALLE Revision 1.9 April 1998 l axtended to 180 days. This specification implements the requirements of 10 CFR Part 50.36a. General Design Criterion 50 of Appendix A to 10 CFR Part 50 and the design objective given in Section 11.0 of Appendix ! to 10 CFR Part 50. The l specified limits goveming the use of appropriate portions of the liquid radwaste treatment system were specified as a suitable fraction of the dose design objectives set forth in Section ll.A of Appendix 1,10 CFR Part 50, for liquid effluents.

I O'

O ,

12-28

LASALLE' Rsvision 1.9 April 1998 12.4 GASEOUS EFFLUENTS 12.4.1 Dose Rate Ooerability Reauirements 12.4.1.A The dose rate due to radioactive materials released in gaseous effluents from the site to areas at and beyond the SITE BOUNDARY, shall be limited to the following:

a. For noble gases: Less than or equal to a dose rate of 500 mrem /yr to the total body and less than or equal to a dose rate of 3000 mrem /yr to the skin, and
b. For lodine-131, for lodine-133, for tritium, and for all radionuclides in

. particulate form with half lives greater than 8 days: Less than or equal to a dose rate of 1500 mrems/yr to any organ via the inhalation pathway.

Acolicability: At all times.

AGlin.0:

With the dose rate (s) exceeding the above limits, immediately decrease the release rate to within the above limit (s).-

Surveillance Reauirements 12.4.1.B.1 The dose rate due to noble gases in gaseous effluents shall be determined to be within the above limits in accordance with the methodology and parameters of the ODCM by obtaining representative samples and performing analyses in accordance with the sampling and analysis program specified in Table 12.4.1-1.

O, 12.4.1.B.2 The dose rate due to iodine-131, iodine-133, tritium, and all radionuclides in particulate form with half lives greater than eight days, in accordance with the methodology and parameters of the ODCM by obtaining representative samples

. and performing analyses in accordance with the sampling and analysis program specified in Table 12.4.1-1.

Bases 12.4.1.C This specification is provided to ensure that the dose at any time at the site boundary from gaseous effluents from all units on the site will be within the annual dose limits of RETS for unrestricted areas. These limits provide reasonable assurance that radioactive material discharged in gaseous effluents will not result in the exposure of an individual in an unrestricted area, either within or outside the site boundary exceeding the limits specified in 10CFR20.1301. For individuals who may at times be within the site boundary, the occupancy of the individual will be sufficiently low to compensate for any increase in the atmospheric diffusion factor above that for the site boundary. The specified release rate limits restrict, at all times, the corresponding gamma and beta dose rates above background to an individual at or beyond the site boundary to less than or equal to a dose rate of 500 mrem / year to the total body or to less than or equal to a dose rate of 3000 mrem / year to the skin. These release rate limits also restrict, at all times, the corresponding thyroid dose rate above background via the inhalation pathway to less than or equal to a dose rate of 1500 mrem / year.

This specification applies to the release of radioactive effluents in gaseous 12-29

l I

LASALLE Revision 1.9 l April 1993 t effluents from all reactors at the site. For units within shared radwaste treatment systems, the gaseous effluents from the shared system are proportioned among the units sharing that system.

'1 O

12-30

LASALLE Revision 1.9 April 1998 l

,pg TABLE 12.4.1-1 V RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM ,

l l

l GASEOUS RELEASE SAMPLING MINIMUM TYPE OF LOWER LIMIT OF ,

TYPE FREQUENCY ANALYSIS ACTIVITY DETECTION (LLD) {

FREQUENCY ANALYSIS (pCi/ml)* '

A. Containment Vent P P Principal Gamma 1x10" and Purge Each Purge

  • Each Purge

4 l H-3 1x10 l B. Main Vent Stack M* M* Principal Gamma 1x10" Grab Sample Emitters 8 i

  1. ' 6 W H-3 1x10 4 -

Greb Sample C. Standby Gas D* D* Principal Gamma 1x10" Treatment System Grab Sample Emitters 8 D. Main Vent Stack Continuous' # l-131 1x1012 And Standby Charcoal

[_ Gas Treatment Sample

'% System

  • 1-133 1x10" Continuous' # Principal Gamma 1x10'"

Particulate Emitters 8 Sample (1-131, Others)

Continuous' M Gross Alphe 1x10'"

Composite Particulate Sample Continuous' O Sr-89,Sr-90 1 x10'"

Composite i Particulate Sample I

Continuous' Noble Gas 4 Noble Gases 1x10 Monitor Gross Beta or l Gamma l

k 12-31

LASALLE Revision 1.9 April 1998 TABLE 12.4.1-1 (Continued)

GASEOUS RELEASE SAMPLING MINIMUM TYPE OF LOWER LIMIT OF TYPE FREQUENCY ANALYSIS ACTIVITY DETECTION (LLD)

FREQUENCY ANALYSIS ( Ci/ml)'

P P Principle Gamma 5x10'7 E. Oil Burner Each Batch Each Batch Emitters Grab Sample Disr 1x10~5 Entre. is (Gamr...

Emitters) 4 1-131 1x10 P M H-3 1x10~5 Each Batch Composite  !

Grab Sample i Gross Alpha 1x10~7 a .;

Q Sr-89, Sr-90 5x10 Composite 4

Fe-55 1x10 4

O l

12-32

i LASALLE Rsvision 1.9 Aoril 1998 rh

) TABLE 12.4.1-1 (Continued) wi RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATION l

a. The LLD is the smallest concentration of radioactive material in a sample that will be detected with 95% probability with 5% probability of falsely concluding that a blank observation represents a "real" signal.

For a particular measurement system (which may include radiochemical separation):

4.66 so LLD = E . V . 2.22x10' . Y . exp (-).at) l I

Where:

LLD is the "a priori" lower limit of detection as defined above (as microcurie per unit mass or volume),

so is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (as counts per minute),

E is the counting efficiency (as counts per transformation),

p ,l V is the sample size (in units of mass or volume),

l 8

2.22x10 is the number of transformations per minute per microcurie, Y is the fractional radiochemical yield (when applicable),  !

1 I

). is the radioactive decay constant for the particular radionuclide, and l i

at is the elapsed time between midpoint of sample collection and time of counting (for plant effluents, not environmental samples).

The value of soused in the calculation of the LLD for a detection system shall be based on the j actual observed variance of the background counting rate or of the counting rate of the blank l samples (as appropriate) rather than on an unverified theoretically predicted variance. Typical ,

values of E, V, Y, and At shall be used in the calculation.

]

i Altemate LLD Methodoloav l

i An attemate methodology for LLD determination follows and is similar to the above LLD equation:

(2.71 + 4.65VB) Decay i LLD =  !

E q b Y t (2.22 x 10$ I

(~')

t v

)

i 12-33 l

LASALLE RGvision 1.9 i April 1998 TABLE 12.4.1-1 (Continued)

RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM l TABLE NOTATION Where:

B = background sum (counts)

E = counting efficiency q = sample quantity (mass or volume) b = abundance (if applicable)

Y= fractional radiochemical yield or collection efficiency (if applicable) t= count time (minutes) 8 2.22 x 10 = number of disintegrations per minute per microcurie 2

2.71 + 4.65VB = k + (2k V2 VB), and k = 1.645 (k=value of the t statistic from the single-tailed i distribution at a significance level of 0.95 and infinite degrees of freedom. This means that the LLD result represents a 95% detection probability with a 5% probability of falsely concluding that the nuclide is present when it is not or that the nuclide is not present when it is.)

Decay = e"'[ ART /(1-e*")][ATa /(1-e*")) if applicable '

A = radioactive decay ~ constant (units consistent with At, RT and Ta)

At = " delta (", or the elapsed time between sample collection or the midpoint of sample collection and the time the count is started, depending on the type of sample (units consistent with A)

RT = elapsed real time, or the duration of the sample count (units consistent with A)

To = sample deposition time, or the duration of analyte collection onto the sample media (units consistent with 1)

The LLD may altemately be determined using installed radioanalytical software, if available. In addition to determining the correct number of channels over which to total the background sum, utilizing the software's ability to perform decay corrections (i.e. during sample collection, from sample collection to start of analysis, and during counting), this attemate method will result in a more accurate determination of the LLD.

It should be recognized that the LLD is defined as a before the fact limit representing the capability of a measurement system and not as an after the fact limit for a particular measurement.

b. Analyses shall also be performed following shutdown, startup, or a THERMAL POWER change exceeding 15% of the RATED THERMAL POWER within a 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> period.

O 12-34

LASALLE Rsvision 1.9 Aoril 1998 TABLE 12.4.1-1 (Continued)

O RADIOACTIVE GASEOUS WASTE SAMPLING AND ANALYSIS PROGRAM TABLE NOTATION If there are several power transients that exceed 15% , the off gas sample may be delayed until after the last transient provided it is within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the first transient (See Technical Specification clarification 01/87 (p.17) signed by Station Manager 3/23/87.)

c. Whenever there is flow through the SBGTS. (If SBGT is run more than 10 minutes in a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period then it must be run a minimum of 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />. The 5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> run is required to meet the sample requirements for lodine and particulates )
d. Samples shall be changed at least once per 7 days and analyses shall be completed within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> after changing or after removal from sampler.

Sampling shall also be performed at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for at least 7 days following each l' shutdown, startup or THERMAL POWER change exceeding 15 percent of RATED THERMAL i POWER within a 1-hour period and analyses completed within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> of changing. When j

samples collected for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> are analyzed, the corresponding LLD's may be increased by a factor of 10. This requirement does not apply if (1) analysis shows that the DOSE EQUIVALENT l-131 concentration in the primary coolant has not increased more than a factor of 3; (2) the noble gas monitor shows that effluent activity has not increased more than a factorof 3.

e. Tritium grab samples shall be taken at least once per 7 days from the plant vent to determine tritium releases in the ventilation exhaust from the spent fuel pool area whenever spent fuel is in p/

(,

the spent fuel pool. If there is no spent fuel in the fuel pool, sampling and analysis of tritium grab samples shall be performed at least monthly.

i

f. The ratio of the sample flow rate to the sampled stream flow rate shall be known for the time period covered by each dose or dose rate calculation made in accordance with Sections 12.4.1.A,12.4.2.A and 12.4.3.A.
g. The principal gamma emitters for which tha LLD specification applies include the following radionuclides: Kr 87, Kr-88, Xe-133, Xe-133m, Xe-135, and Xe-138 for gaseous emissions and Mn-54, Fe-59, Co 58, Co-60, Zn-65, Mo-99, Cs 134, Cs-137, Ce-141 and Ce 144 for particulate emissions. This list does not mean that only these nuclides are to be detected and reported.

Other peaks which are measurable and identifiable, at the 95% confidence level, together with the above nuclides, shall also be identified and reported.

{ h. The drywell tritium and noble gas sample results are valid for 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> from sample time if 1) the drywell radioactivity monitors have not indicated an increase in airbome or gaseous radioactivity, 3M 2) the drywell equipment and floor drain sump pumps run times have not indicated an increase in leakage in the drywell since the sample was taken.

If there is any reason to suspect that gaseous radioactivity levels have changed in the drywell since the last sample (30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />), a new sample and analyses should be requested prior to starting a drywell purge to meet the intent of providing current analyses to reflect actual activity released to the environment.

If the drywell is Duraed in accordance with Technical Specification and ODCM definitions, both O

12-35

LASALLE Revision 1.9 Aoril 1998 noble gas and tritium analyses must be completed before the purge begins. If the drywell is simply vented in accordance with Technical Specification and ODCM definitions, no sample is required before venting. When SBGT equipment is started and shut down, ensure noble gas iodine and particulate samples are taken. (This is from Technical Specification Clarification 01/87 p.34 signed 3-23-87 by Station Manager)

O' O

12-36

r LASALLE Ravision 1.9 Aoril 1998

( /~ 12.4 GASEOUS EFFLUENTS 12.4:2 Dose - Noble Gases Operability Reauirements

- 12.4.2.A The air dose due to noble gases released in gaseous effluents, from each reactor unit, from the site shall be limited to the following;

a. During any calendar quarter. Less than or equal to 5 mrad for gamma radiation and less than or equal to 10 mrad for beta radiation, and
b. During any calendar year: Less than or equal to 10 mrad for gamma radiation and less than or equal to 20 mrad for beta radiation.

Acolicability: At all times.

89E9.!1

a. With the calculated air dcse from radioactive noble gases in gaseous effluents exceeding any of the above limits, in lieu of any other report required by LaSalle Technical Specification 6.6.A, prepare and submit to

! the Commission, pursuant to 10CFR50, Appendix 1, Section IV.A, =

report which identifies the cause(s) for exceeding the limit (s) and defines the corrective actions to be taken to reduce the releases and the proposed corrective actions to be taken to assure that subsequent releases will be in compliance with the above limits. This report is due to the NRC within 30 days from the end of the quarter in which the release occurred.

Surveillance Reauirements 12.4.2.8 _ Dose Calculations - Cumulative dose contributions for the current calendar

quarter and current calendar year shall be determined in accordame with the ODCM at le::t once per 31 days.

Bases 12.4.2.C This specification is provided to implement the requirements of Sections ll.B.

Ill.A and IV.A of Appendix 1,10 CFR Part 50. The Operability Requirements are the guides set forth in Section ll.B of Appendix 1. The ACTION statements provide the required operating flexibility and at the same time implement the l guides set forth in Section IV.A of Appendix ! to assure that the releases of radioactive material in gaseous effluents will be kept "as low as is reasonably achievhble." The Surveillance Requirements implement the requirements in Section Ill.A of Appendix 1 that conformance with the guides of Appendix l be shown by calculational procedures based on models and data such that the actual exposure of an individual through appropriate pathways is unlikely to be substantially underestimated. The dose calculations established in the ODCM for calculating the doses due to the actual release rates of radioactive noble gases in gaseous effluents are consistent with the methodology provided in Regulatory Guide 1.109," Calculation of Annual Doses to Man from Routine  !

Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix 1, " Revision 1, October 1977 and Regulatory Guide 1.111. " Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light Water Cooled Reactors,"

Revision I, July 1977. The ODCM equations provided for determining the air .

t doses at the site boundary are based upon the historical average atmospheric l conditions. I 12-37 ,

I l

LASALLE R vision 1.9 April 1998 12.4 GASEOUS EFFLUENTS 12.4.3 Dose - lodine-131, lodine-133, Tritium, and Radionuclides in Particulate Form Operability Reauirements 12.4.3.A The dose to a MEMBER OF THE PUBLIC from iodine-131, iodine-133, tritium, and all radionuclides in particulate form with half-lives greater than 8 days in gaseous effluents released, from each reactor unit, to areas at and beyond the SITE BOUNDARY shall be limited to the following:

a. During any calendar quarter: Less than or equal to 7.5 mrems to any organ and,
b. During any calendar year. Less than or equal to 15 mrems to any organ.

Acolicability: At all times.

Action:

a. With the calculated dose from the release of iodine-131, iodine-133, tritium, and radionuclides in particulate form with half lives greater than 8 days, in gaseous effluents exceeding any of the above limits, in lieu of any other report required by Technical Specification 6.6.A, prepare and submit to the Commission, pursuant to 10CFR50, Appendix I, Section IV.A, a report that identifies the cause(s) for exceeding the limit and I defines the corrective actions that have been taken to reduce the releases and the proposed correction actions to be taken to assure that '

subsequent releases will be in compliance with the above limits. This repun is due to the NRC within 30 days from the end of the quarter in which the released occurred.

Surveillance Reauirements 12.4.3.B Cumulative dose contributions for the current calendar quarter and current calendar year for iodine-131, iodine-133, tritium, and radionuclides in particulate form with half lives greater than 8 days shall be determined in accordance with the methodology and parameters in the ODCM at least once per 31 days.

Bases 12.4.3.C The specification is provided to implement the requirements of Sections ll.C, Ill.A and IV.A of Appendix 1,10 CFR Part 50. The Operability Requirements are the guides set forth in Section ll.C of Appendix 1. The ACTION statements provide the required operating flexibility and at the same time implement the guides set forth in Section IV.A of Appendix I to assure that the releases of radicadive materials in gaseous effluents will be kept "as low as is reasonably achievable." The ODCM calculational methods specified in the Surveillance Requirements implement the requirements in Section Ill.A of Appendix 1 that conformance with the guides of Appendix 1 be shown by calculational procedures based on models and data, such that the actual exposure of an individual through appropriate pathways is unlikely to be substantially underestimated. The ODCM calculational methods for calculating the doses due to the actual release rates of the subject materials are consistent with the methodolegy provided in O

12-38

LASALLE R: vision 1.9 April 1998 I

l Regulatory Guide 1.109," Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Complianceivith 10 CFR Part 50, Appendix 1, " Revision 1, October 1977 and Regulatory Guide 1.111, " Methods for Estimating Atmospheric Transport and Dispersion of j

Gaseous Effluents in Routine Releases from Light Water-Cooled Reactors," 1 l

Revision 1, July 1977. These equations also provide for determining the actual )

doses based upon the historical average atmospheric conditions. The release

{

rate specifications for radioiodines, radioactive materials in particulate form and I

radionuclides other than noble gases are dependent on the existing radionuclide pathways to man, in the unrestricted area. The pathways which were examined in the development of these calculations were: 1) individual inhalation of airbome radionuclides,2) deposition of radionuclides onto green leafy vegetation l with subsequent consumption by man,3) deposition onto grassy areas where l milk animals and meat producing animels graze with consumption of the milk and meat by man, and 4) deposition on the ground with subsequent exposure of man.

i

,i n ,

l l

l n

m 12-39 l-

l l

l LASALLE Revision 1.9 April 1998 l

12.4 GASEOUS EFFLUENTS 9l 12.4.4 Gaseous Radwaste Treatment System Operability Reauirements i 12.4.4.A The GASEOUS RADWASTE (OFF-GAS) TREATMENT SYSTEM shall be in  ;

operation. j 1

Apolicability: Whenever the main condenser air ejector system is in operation.

Action l

a. With the GASEOUS RADWASTE (OFF-GAS) TREATMENT SYSTEM inoperable for more than 7 days, in lieu of any other report required by LaSalle Technical Specification 6.6.A, prepare and submit to the Commission within 30 days, pursuant to LaSalle Technical Specification 6.6.C, a Special Report which includes the following information:
1. Identification of the inoperable equipment or subsystems and the reason for inoperability.
2. Action (s) taken to restore the inoperable equipment to OPERABLE status, and 1
3. Summary description of action (s) taken to prevent a recurrence. l

,{

l ggveillance Reauirement:,- -

l 12.4.4.B The GASEOUS RADWASTE TREATMENT SYSTEM shall be verified to be in l operation at least once per 7 days.

l 1

Bases 12.4.4.C The OPERABILITY of the GASEOUS RADWASTE TREATMENT SYSTEM and the VENTILATION EXHA'UST TREATMENT SYSTEM ensures that the system will be available for use whenever gaseous effluents require treatment prior to release to the environment. The requirement that the appropriate portions of ,

these systems be used, when specified, provides reasonable assurance that the j releases of radioactive materials in gaseous effluents will be kept "as low as is {

reasonably achievable". This specification implements the requirements of 10 l CFR Part 50.36a, General Design Criterion 60 of Appendix A to 10 CFR Part 50, i and the design objectives given in Section ll,0 of Appendix i to 10 CFR Part 50.

The specified limits goveming the use of appropriate portions of the systems j were specified as a suitable fraction of the dose design objectives set forth in Sections 11.3 and l1.0 of Appendix 1,10 CFR Part 50, for gaseous effluents.

l l

O 12-40 l

LASALLE Revision 1.9 Aoril 1998 12,4 GASEOUS EFFLUENTS 12.4.5 Ventilation Exhaust Treatment System Operability Recuirements 12.4.5.A The appropriate port lons of the VENTILATION EXHAUST TREATMENT SYSTEM shall be OPERABLE and be used to reduce radioactive materials in gaseous waste prior to their discharge when the projected doses due to gaseous effluent releases from each reactor unit, from the site, when averaged over 31 .

days, would exceed 0.3 mrem to any organ. l l

Aoolicability: At all times. I Ml20:

With the VENTILATION EXHAUST TREATMENT SYSTEM inoperable for more than 31 days, and with gaseous waste being discharged without treatment and in excess of the above limits, in lieu of any other report required by LaSalle '

Technical Specification 6.6.A, prepare and submit to the Commission within 30 days, pursuant to LaSalle Technical Specification 6.6.C, a Special Report which I includes the following information:

I

1. Identification of the inoperable equipment or subsystems and the reason for inoperability,
2. Action (s) taken to restore the inoperable equipment to OPERABLE status, and
3. Summary description of action (s) taken to prevent a recurrence. '

Surveillance Reouirements 12.4.5.B.1 Doses due to gaseous releases from the site shall be projected at least once per 31 days in accordance with the ODCM.

12.4.5.B.2 The VENTILATION EXHAUST TREATMENT SYSTEM shall be demonstrated OPERABLE by operating the VENTILATION EXHAUST TREATMENT SYSTEM equipment for at least 30 minutes, at least once per 92 days unless the appropriate systern has been utilized to process radioactive gaseous effluents during the previous 92 days.

Bases 12.4.5.C The OPERABILITY of the GASEOUS RADWASTE TREATMENT SYSTEM and the VENTILATION EXHAUST TREATMENT SYSTEM ensures that the system will be available for use whenever gaseous effluents require treatment prior to release to the environment. The requirement that the appropriate portions of these systems be used, when specified, provides reasonable assurance that the releases of radioactive materials in gaseous effluents will be kept "as low as is l reasonably achievable". This specification implements the requirements of 10 1

CFR Part 50.36a, General Design Criterion 60 of Appendix A to 10 CFR Part 50, and the design objectives given in Section ll,0 of Appendix 1 to 10 CFR Part 50.

The specified limits goveming the use of appropriate portions of the systems were specified as a suitable fraction of the dose design objectives set forth in Sections 11.3 and l1.0 of Appendix 1,10 CFR Part 50, for gaseous effluents O

12-41

LASALLE Revision 1.9 Aoril 1993 12.4 GASEOUS EFFLUENTS 12.4.6 Venting or Purging Operability Reauirements 12.4.6. A VENTING or PURGING of the containment drywell shall be through the Primary Containment Vent and Purge System or the Stcndby Gas Treatment System.

ADolicability: Whenever the drywellis vented or purged.

Action:

a. With the requirements of the above specification not satisfied, suspend all VENTING and PURGING of the drywell.

Surveillance Reauirements 12.4.6.B.1 The containment drywell shall be determined to be aligned for VENTING or PURGING through the Primary Containment Vent and Purge System or the Standby Gas Treatment System within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> prior to start of and at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> during VENTING or PURGING of the drywell.

12.4.6.B.2 Prior to use of the Purge System through the Standby Gas Treatment System in OPERATIONAL CONDITION 1,2 or 3 assure that:

a. Both Standby Gas Treatment System trains are OPERABLE, and '
b. Oniy one of the Standby Gas Treatment System trains is used for PURGING.

Bases 12.4.6.C This specification provides reasonable assurance that releases from drywell purging operations will not exceed the annual dose limits of 10CFR20 for unrestricted areas.

O 12-42

LASALLE Ravision 1.9 Aoril 1998 12.4 GASEOUS EFFLUENTS 12.4.7 Total Dose Ooerability Reauirements 12.4.7.A The dose or dose commitment to any member of the public, due to releases of radioactivity and radiation, from uranium fuel cycle sources shall be limited to less than or equal to 25 mrem to the total body or any organ (except the thyroid, which shall be limited to less or equal to 75 mrem) over 12 consecutive months.

ADolicability At all times.

MIDII:

With the calculated doses from the release of radioactive materials in liquid or gaseous effluents exceeding twice the limits of Sections 12.3.2.A.a.12.3.2.A.b, 12.4.2.A.a.12.4.2.A.b,12.4.3.A.a or 12.4.3.A.b, in lieu of any other report required by LaSalle Technical Specification 6.6.A. prepare and submit, pursuant to LaSalle Technical Specification 6.6.C, a Special Report to the Director, Nuclear Reactor Regulation, U.S. Nuclear Regulatory Commission, Washington, D.C,20555, within 30 days, which defines the corrective action to be taken to reduce subsequent releases to prevent recurrence of exceeding the limits of Section 12.4.7.A. This 3pecial Report shall include an analysis which estimates the radiation exposure (dose) to a member of the public from uranium fuel cycle sources (including all effluents pathways and direct radiation) for a 12 consecutive month period that includes the release (s) covered by this report. If

\

the estimated dose (s) exceeds the limits of Section 12.4.7.A, and if the release condition re:#Jng in violation of 40 CFR 190 has not already been corrected, the Special Report shall include a request for a variance in accordance with the provisions of 40 CFR 190 and including the specified information of 40 CFR -

190.11, Submittal of the report is considered a timely request, and a variance is granted until staff action on the request is complete. The variance only relates to the limits of 40 CFR 190, and does not apply in any way to the requirements for dose limitation of 10 CFR Part 20, as addressed in other sections of this technical specification.

Surveillance Reouirements 12.4.7.B Dose Calculations - Cumulative dose contributions from direct radiation and liquid and gaseous effluents shall be determined in accordance with Sections 12.3.2.8,12.4.2.B and 12.4.3.B and in accordance with the ODCM.

Bases 12.4.7.C This specification is provided to meet the dose limitations of 40 CFR 190. The specification requires the preparation and submittal of a Special Report whenever the calculated doses from plant radioactive effluents exceed twice the design objective doses of Appendix 1. For sites containing up to 4 reactors, it is highly unlikely that the resultant dose to a member of the public will exceed the dose limits of 40 CFR 190 if the individual reactors remain within the reporting requirement level. The Special Report will describe a course of action which O

12-43 J

LASALLE Revision 1.9 April 1998 should result in the limitation ot dose to a member of the public for 12 consecutive months to within the 40 CFR 190 limits. For the purpose of the Special Report, it may be assumed that the dose commitment to the member of the public from other uranium fuel cycle sources is negligible, with the exception that dose contributions from other nuclear fuel cycle facilities at the same site or within a radius of 5 miles must be considered. If the dose to any member of the public is estimated to exceed the requirements of 40 CFR 190, the Special Report with a request for a variance (provided the release conditions resulting in violation of 40 CFR 190 have not: already been corrected), in accordance with the provisions of 40 CFR 190.11,. is considered to be a timely request and fulfills the requirements of 40 CFR 190 until NRC staff action is completed. An individualis not considered a member of the public during any period in which he/she is engaged in carrying ou.t any operation which is part of the nuclear fuel cycle.

er t

f I

e l 12-44

LASALLE Rsvision 1.9 )

April 1998 12.4 GASEOUS EFFLUENTS 12.4.8 Main Condenser Operability Reauirements 12.4.8.A The release rate of the sum of the activities from the noble gases measured prior to the holdup line shall be limited to less than or equal to 3.4 x 105 microcuries/second.

Acolicability: Operational Conditions 1,2 and 3.

A_g((g.Q With the release rate of the sum of the activities from the noble gases prior to the holdup line exceeding 3.4 x 105microcuries/second, restore the release rate to within its limit within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least STARTUP with the main steam isolation valves closed within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

Surveillance Reauirements 12.4.'l.B.1 The radioactivity rate of noble gases prior to the holdup line shall be continuously monitored in accordance with the ODCM and Table 12.2.2-2.

12.4.8.B.2 The release rate of the sum of the activities from noble gases prior to the holdup line shall be determined to be within the limits of specification 12.4.8.A at the following frequencies by performing an isotopic analysis of a representative O sample of gases taken prior to the holdup line, 7 V

a. At lec::t once per 31 days.
b. Within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> following an increase, as indicated by the off gas pre-treatment Noble Gas Activity Monitor, of greater than 50%, after factoring out increases due to changes i.. THERMAL POWER level, in  ;

the nominal steady state fission gas release from the primary coolant. '

Bases 12.4.8.C In accordance with surveillance requirements contained within ODCM Chapter 12 item number 12.4.8.B.1 and 2, this specification provides reasonable assurance that the releases from the main condenser will not exceed the requirements of the LaSalle Technical Specifications 3/4.11.2.2. In addition, a sample is required within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> if the increase is not due to thermal power changes. If the cause is known and not fuel related god less than i hour in duration, then no sample is required. [This is based on interpretation letter from W. R. Huntington to Operating Engineers, Shift Engineers and F.R. Lawless, dated May 24,1984.]

O 12-45

LASALLE Revision 1.9 Aoni 1998 12.4.9 Dose Limits for Members of the Public Operability Reauirements 12.4.9.A The licensee shall conduct operations such that the TEDE to individual MEMBERS OF THE PUBLIC does not exceed 100 mrem in a year. In addition, the dose in any unrestricted area from extemal sources does not exceed 2 mrem in any one hour. The Effluents Program shall implement monitoring, sae.eliag, and analysis of radioactive liquid and gaseous effluents in accordance wi' 10CFR20.1302 and with the methodology and parameters in the ODCM.

Applicability: At all times.

Act;;n:

1. If the calculated dose from the release or exposure of radiation meets or exceeds the 100 mrem / year limit for the MEMBER OF THE PUBLIC, prepare and submit a report to the Commission in accordance with 10CFR20.2203.
2. If the dose in any unrestricted area from extemal sources of radiation meets or exceeds the 2 mrem in any one hour limit for the MEMBER OF THE PUBLIC, prepare and submit a report to the Commission in accordance with 10CFR20.2203.

Surveillance Reauirements 12.4.9.B Calculate the TEDE to individual MEMBERS OF THE PUBLIC annually to determine compliance with the 100 mrem / year limit in accordance with the ODCM.

In addition, evaluate and/or determine if direct radiation exposures exceed 2 '

mrem in any hour in unrestricted areas.

l l

Bases 12.4.9.C This section applies to direct exposure of radioactive materials as well as radioactive materials released in gaseous and liquid effluents.10CFR20.1301 l sets forth the 100 mrem / year dose limit to members of the public; 2 mrem in any l

one hour limit in the unrestricted area; and reiterates that the licensee is also required to meet the 40CFR190 standards.10CFR20.1302 provides options to determine compliance to 10CFR20.1301. Compliance to the above operability requirement is based on 10CFR20,40CFR190 and LaSalle Station Technical Specifications.

O 12-46

LASALLE Rsvision 1.9 April 1998 12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM O 12.5.1 Monitorino Prooram Operability Reouirements 12.5.1.A The Radiological Environmental Monitoring Program shall be conducted as i

specified in Table 12.5-1. I ApolicabilitV: At all times.

A.g[jg!1:

1. With the Radiological Environmental Monitoring Program not being conducted as specified in Table 12.5-1, prepare and submit to the Commission, in the Annual Radiological Environmental Operating Report required by Technical Specification 6.9.1.6, a description of the reasons for not conducting the program as required and the plans for preventing a recurrence.

Deviations are permitted from the required sampling schedule if specimens are s

unobtainable due to hazardous conditions, seasonal unavailability, malfunction of sampling equipment, if a prson/ business who participates in this program goes out of business or no longer can provide sample, or contractor omission which is corrected as soon as discovered. If the equipment malfunctions, corrective actions shall be completed as soon as practical. If a person / business supplying samples goes out of business, a replacement supplier shall be found as soon as possible. All deviations from the sampling schedule shall be described in the Annual Radiological Environmental Operating Report.

2. With the level of radioactivity as the result of plant effluents in an environmental O- sampling medium at a specified location exceeding the reportinglevels of Table

'a 12.5-2 when cveraged over any calendar quarter, prepare and submit to the Commission within 30 days, pursuant to Technical Specification 6.9.2, a Special Report that identifies the cause(s) for exceeding the limit (s) and defines the corrective actions to be taken to reduce radioactive effluents so that the potential annual dose

  • to a MEMBER OF THE PUBLIC is less than the calendar year limits of Section 12.3.2,12.4.2, or 12.4.3. When more than one of the radionuclides in Table 12.5.2 are detected in the sampling medium, this report shall be submitted if:

concentration (1) . concentration (2) > 1.0 reporting level (1) reporting level (2)

When radionuclides other than those in Table 12.5-2 are detected and are the result of plant effluents, this report shall be submitted if the potential annual dose

  • to A MEMBER OF THE PUBLIC from all radionuclides is equal to or greater than the calendar year limits of Section 12.3.2,12.4.2, or 12.4.3. This report is not required if the measured level of radioactivity was not the result of plant effluents; however, in such an event, the condition shall be reported and described in the Annual Radiological Environmental Operating Report required by Section 12.6.1.
  • The methodology and parameters used to estimate the potential annual dose to a MEMBER OF THE PUBLIC shall be indicated in this report.

O 12-47

LASALLE Revision 1.9 April 1998 12.5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Continued)

3. If the sample type or sampling location (s) as required by Table 12.51 become(s) l permanently unavailable, identify suitable altemative sampling media for the I pathway of interest and/or specific sampling locations for obtaining replacement samples and add them to the Radiological Environmental Monitoring Program as soon as practicable. The specific locations from which samples were unavailable may then be deleted from the monitoring program.

Prepare and submit controlled version of t'he ODCM within 180 days including a l revised figure (s) and table reflecting the new location (s) with supporting l

information identifying the cause of the unavailability of samples and justifying the selection of new location (s) for obtaining samples.

Surveillance Reauirements 12.5.1.B The radiological environmental monitoring program samples shall be collected I pursuant to Table 12.5-1 from the specific locations given in the table and figure (s) i in the ODCM, and shall be analyzed pursuant to the requirements of Table 12.5-1 l and the detection capabilities required by Table 12.5-3.

l Bases l

l 12.5.1.C The Radiological Environmental Monitoring Program required by ttus section l provides representative measurements of radiation and of radioac ive materials in those exposure pathways and for those radionuclides that lead to tite highest potential radiation exposures of MEMBERS OF THE PUBLIC resulting from the '

station operation. This monitcring program implements Section IV.B.2 of Appendix i to ~iu CFR Part f 0 and thereby supplements the radiological effluent monitoring program by verifying that the measurable concentrations of radioactive materials and levels of radiation are not higher than expected on the t, asis of the effluent measurements and the modeling of the environmental exposure pathways. Guidance for this monitoring program is provided by the Radiological Assessment Branch Technical Position on Environmental Monitoring. The initially specified monitoring program will De effective for at least the first 3 years of j commercial operation. Following this period, program changes may be initiated based on operational experience.

The required detection capabilities for environmental sample analyses are tabulated in terms of the lower limits of detection (LLDs). The LLDs required by Table 12.5-3 are considered optimum for routine environmental measurements in industriallaboratories. It should be recognized that the LLD is defined as a before the fact limit representing the capability of a measurement system and not as an after the fact limit for a particular measurement.

Detailed discussion of the LLD, and other detection limits, can be found in HASL Procedures Manual, HASL-300 (revised annually), Currie, LA., " Limits for Qualitative Detectior, and Quantitative Deter-ination - Application to Radiochemistry," Anal. Chem. 40.586-93 (1968), and Hartwell, J.K., " Detection Limits for Radioanalytical Counting Techniques," Atlantic Richfield Hanford Company Report ARH-SA-215 (June 1975).

12-48

L.ASALLE Revision 1.9 April 1998 b

.V/ 12.5 RADIOt.OGICAL ENVIRONMENTAL MONITORING PROGRAM (Continued)

Interpretations 12.5.1.D Table 12.5-1 requires "one sample of each communi;y d' inking water supply downstream of the plant within 10 kilometers." Drinking water supply is defined as water taken from rivers, lakes, Jr reservoirs (not well water) which is used for drinking.

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LASA1.LE Revision 1.9

( April 1998 TABLE 12.s-1 (Continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM TABLE NOTATIONS (1) Specific parameters of distance and direction from the centerline of the midpoint of the two units and additional description where pertinent shall be provided for each and every sample location in Table 12.s-1, except for vegetation. For vegetation, due to location variability year to year, the parameters of distance and direction shall be provided in the i

Annual Environmental Operating Report.

(2) Far field samples are analyzed when the respective near field sample results are inconsistent with previous measurements and radioactivity is confirmed as having its Origin in airbome effluents from the station, or at the discretion of the Radiation Support l

l Director.

(3) Airbome particulate sample filters shall be analyzed for gross beta radioactivity 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or more after sampling to allow for radon and thoron daughtei decay. If gross beta activity in air particulate samples is greater than 10 times the yearly mean of control samples, gamma isotopic analysis shall be performed on the individual samples.

l (4) Gamma isotopic analysis means the identification and quantification of gamma emitting radionuclides that may be attributable to the effluents from the station.

l (5) One or more instruments, such as a pressurized ion chamber, for measuring and recording dose rate continuously may be used in place of, or in addition to, integrating dosimeters. Film badges shall not be used as dosimeters for measuring direct radiation. ,

The 40 locations is not an absolute number. The number of direct radiation monitoring stations may be reduced acc_ording to geographical limitations; e.g., If a station is adjacent to a !.:ke, some sectors may be over water thereby reducing the number of dosimeters which could be placed at the indicated distances. The frequency of analysis or readout for TLD systems will depend upon the characteristics of the specific system used and should be selected to obtain optimum dose information with minimal fading.

(6) Groundwater samples shall be taken when this source is tapped for drinking or irrigation purposes in areas where the hydraulic gradient or recharge properties are suitable for contamination.

(7) The " downstream" sample shall be taken in an area beyond but near the mixing zone.

The " upstream sample" shall be taken at a distance beyond significant influence of the discharge. Upstream samples in an estuary must be taken far enough upstream to be beyond the station influence.

(8) If milking animals are not found in the designated indicator locations, or if the owners decline to participate in the REMP, all milk sampling may be discontinued.

(9) Biweekly refers to every two weeks.

(10) 1-131 analysis means the analytical separation and counting procedure are specific for this radionuclide.

(11) One sample shall consist of a volume / weight of sample large enough to fill contractor specified container.

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LASALLE Rsvision 1.9 l April 1998 O

d-TABLE 12.5-3 (Continued)

DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS TABLE NOTATIONS (1) The nuclides on this list are not the only nuclides intended to be considered. Other peaks that are identifiable, together with those of the above nuclides, shall also be analyzed and reported in the Annual Radiological Environmental Operating Report.

(2) Required detection capabilities for thermoluminescent dosimeters used for environmental measurements shall be in accordance with the recommendations of Regulatory Guide 4,13.

, (3) The Lower Limit of Detection (LLD) is defined, for purposes of these specifications, as the smallest concentration of radioactive material in a sample that will yield a net count, above system background, that wi!! be detected with 95% probability with only 5% probability of falsely concluding that a blank observation represents a "real" signal.

For e particular measurement system, which may include radiochemical separation, the LLD is defined as follows:

4.66 Sb + 3/tb LLD = - -

i (E) (V) (2.22) (Y) (exp (- ut))

l f"] 4.66 Sb ,

'V LLD ~

(E) (V) (2.22) (Y) (exp (-ut))_ _

Where: 4.66 Sb >> 3/tb LLD = the "a priori" Minimum Detectable Concentration (picoCuries per unit mass or volume),

i sb = the standard deviation of the background counting rate or of the counting rate of a blank sample, as appropriate (counts per minute),

= Vtotal counts tb E = the counting efficiency (counts per disintegration),

j V = the sample size (units of mass or volume),

2.22 = the number of disintegrations per minute per picocurie, Y = the fractional radiochemical yield, when applicable,

). = the radioactive decay constant for the particular radionuclide (sec-1),

O 12 58

I LASALLE Revision 1.9 April 1998 9

TABLE 12.5-3 (Continued)

DETECTION CAPABILITI ES FOR ENVIRONMENTAL SAMPLE ANALYSIS TABLE NOTATIONS tb = counting time of the background or blank (minutes), and At = the elansed time between sample collection, or end of the sample collection period, and the time of counting (sec).

Typical values of E, V, Y, and at should be used in the calculation.

It should be recognized that the LLD is defined as a before the fact limit representing the capability of a measurement system and not as an after the fact limit for a particular measurement.

Analyses shall be performed in such a manner that the stated LLDs will be achieved under routine conditions. Occasionally, background fluctuations, unavoidable small sample sizes, the presence of interfering nuclides, or other uncontrollable circumstances may render these LLDs unachievable.

In such cases, the contributing factors shall be identified and described in the Annual Radiological Environmentti Operating Report.

(4) If no drinking water pathway exists, the value of 15 pCi/l may be used.

(5) A value o; 0.5 pCi/l shall be used when the animals are on pasture (May through October) and a value of 5 pCl/l shall be used at all other times (November through April).

(6) This LLD applies only when the analytical separation and counting procedure are specific for this ladionuclide.

(7) This LLD is the minimum allowable, however, vendors performing environmental sample analyses off-site will be required to meet an LLD of 200 pCl/l.

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12-59

l LASALLE '

Revision 1.9 April 1998 l

O V12.5.2 Land Use Census Operability Reouirements 12.5.2.A. A Land Use Census shall be conducted and shall identify within a distance of 10 km (6.2 miles) the location in each of the 16 meteorological sectors

  • of the nearest milk animal, the nearest residence **, and an enumeration of livestock. For dose calculation, a garden will be assumed at the nearest residence.

Applicability: At all times.

Action: I l

1. With a Land Use Census identifying a location (s) that yields a calculated dose or dose commitment, via the same exposure pathway 20% greater than at a location from which samples are currently being obtained in accordance with Section 12.5.1, add the new location (s) within 30 days to the Radiological Environmental Monitoring Program given in Chapter 11. The sampling location (s), excluding the control location, having the lowest calculated dose or dose commitment (s), via the same exposure pathway, may be deleted from this monitoring program after October 31 of the year in which this Land Use Census was conducted. Submit in the next Annual Radiological Environmental Operating Report documentation for a change in the ODCM including a revised figure (s) and table (s) for the ODCM reflecting the new location (s) with information supporting the change in sampling locations.

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  • This requirement may be reduced according to geographical limitations; e.g. at a lake .,

site where some sector's will be over water, "The nearest industrial facility shall also be documented if closer than the nearest residence.

Surveillance Reoulrements 12.5.2.8 The Land Use Census shall be conducted during the growing season, between June 1 and October 1, at least once per 12 months using that information that will provide the best results, such as by a door-to-door survey, aerial survey, or by consulting local agriculture authorities. The results of the Land Use Census shall be included in the Annual Radiological Environmental Operating Report.

Bases 12.5.2.C This specification is provided to ensure that changes in the use of areas at and beyond the SITE BOUNDARY are identified and that modifications to the Radiological Environmental Monitoring Program given in the ODCM are made if required by the results of this census.

This census satisfies the requirements of Section IV.B.3 of Appendix 1 to 10 CFR Part 50.

An annual garden census will not be required since the licensee will assume that there is a garden at the nearest residence in each sector for dose calculations.

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l 12-60

LASALLE Revision 1.9 April 1998 12.5.3 Interfaboratory Comparison Proaram e

Operability Reouirements 12.5.3.A Analyses shall be performed on radioactive materials supplied as part of an Interlaboratory Comparison Program that correspond to samples required by Table 12.5-1.

Applicability: At all times.

Action:

1. With analyses not being performed as required above, report the corrective actions taken to prevent a recurrence to the Commission in the Annual Radiological Environmental Operating Report.

Surveillance Reouirements 12.5.3.B A summary of the results obtained as part of the above required Intertaboratory Comparison Program shall be included in the Annual Radiological Environmental Operating Report.

Bases 12.5.3.C The requirement for participation in an interfaboratory Comparison Program is provided to ,.

ensure that independent checks on the precision and accuracy of the measurements of radioactive materialin environmental samples matrices are performed as part of the

' quality assurance program for environmental monitoring in order to demonstrate that the results are valid for the purposes of Section IV.B.2 of Appendix 1 to 10 CFR Part 50.

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1 12-61 l

1 LASALLE Revision 1.9 April 1998 12.6 REPORTING REQUIREMENTS 12.6.1 Annual Ratliploaical Environmental Operatina Reoort*

Routine Annual Radiologica! Environmental Operating Report covering the operation of the Units during the previous calendar year shall be submitted prior to May 1 of each year.

The Armual Radiological Environmental Operating Report shall include summaries, interpretations, and an analysis of trends of the results of the radiological environmental surveillance activities for the report period, including, as found appropriate, a comparison o'f preoperational studies with operational controls or with previous environmental surveillance reports, and an assessment of the observed impacts of the plant operation on the environment.

The Annual Radiological Environmental Operating Report shallinclude the results of all radiological environmenta! samples and of all environmental radiation measurements taken during the period pursuant to the locations specified in the tables and figures in Chapter 11 of the ODOM, as well as summarized and tabulated results of these analyses and measurements in the format of the table in the Radiological Assessment Branch Technical Position, Revision 1, November 1979. In the event that some individual results are not available forinclusion with the report, the report shall be submitted noting and explaining the reasons for the missing results. The missing data shall be submitted as soon as possible in a supt.lementary report.

The reports shall also include the following: a summary description of the Radiological Environmental Monitoring Program; legible maps covering all sampling locations keyed to a s table giving distances and directions from the midpoint between the two units; reasons for not

[' --} conducting the Radiological Environmental Monitoring Program as required by Section 12.5.1, ,';

and discussion of all deviations from the sampling schedule of Table 12.5-1; a Table of Missed Samples and a Table of Sample Anomalies for all deviations from the sampling schedule of  ;

Table 11.1-1; discussion of environmental sample measurements that exceed the reporting j levels of Table 12.5-2 but are not the result of plant effluents; discussion of all analyses in  !

which the LLD required by Table 12.5-3 was not achievable; results of the Land Use Census I required by Section 12.5.2; and the results of licensee participation in an Interlaboratory Comparison Program and the corrective actions being taken if the specified program is not being performed as required by Section 12.5.3.

The Annual Radiological Environmental Operating Report shall also include an annual summary of hourly meteorological data collected over the previous year. This annual summary may be either in the form of an hour-by-hour listing on magnetic iape of wind speed, wind direction, atmospheric stability, and precipitation (if measured), or in the form of joint frequency distributions of wind speed, wind direction, and atmospheric stability, in lieu of submission with the Annual Radiological Environmental Operating Report, the licensee has the option of retaining the summary of required meteorological data on site in a file that shall be provided to the NRC upon request.

  • A single submittal may be made for a multiple unit station.

12-62

LASALLE f Revision 1.9 April 1998 12.6.1 Annual Radioloaical Environmental Operatina Report (Continued) ei  !

i The Annual Radiological Environmental Operating Report shall also include an assessment of the radiation doses due to the radioactive liquid and gaseous effluents released from the unit or station during the previous calendar year. This report shall also include an assessment of radiation doses to the most likely exposed MEMBER OF THE PUBLIC from reactor releases and other nearby uranium fuel cycle sources, including doses from primary effluent pathways and direct radiation, for the previous calendar year.

The assessment of radiation doses shall be performed in accordance with the methodology and parameters in the ODCM and in compliance with 10CFR20 and 40 CFR 190,

" Environmental Radiation Protection Standards for Nuclear Power Operation."

12.6.2 Radioactive Effluent Release Reoort'

a. Routine radioactive effluent release reports covering the operation of the unit during the previous calendar year of operation shall be submitted according to the Technical Specifications. The period of the first report shall begin with the date of initial criticality,
b. The radioactive effluent release reports shall include a summary of the quantities of radioactive liquid and gaseous effluents and solid waste released from the unit as outlined in Regulatory Guide 1.21, " Measuring, Evaluating and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light Water-Cooled Nuclear Power Plants," Revision 1, June 1974, with data summarized on a quarterly basis following the format of Appendix B thereof.
c. The radioactive effluent release report shall include the following information for each type of =

solid waste shipped offsite during the report period:

~

1. Container volume,
2. Total curie quantity (specify whether determined by measurement or estimate),
3. Principal radionuclides (specify whether determined by measurement or estimate),
4. Type of waste (e.g., spent resin, compacted dry waste, evaporator bottoms),
5. Type of container (e.g., LSA, Type A, Type B, Large Quantity), and
6. Solidification agent (e.g., cement, urea formaldehyde).

The radioactive effluent release reports shallinclude unplanned releases from the site to unrestricted areas of radioactive materials in gaseous and liquid effluents on a quarterly basis.

The radioactive effluent release reports shall include any changes to the PROCESS CONTROL PROGRAM (PCP) made during the reporting period.

'A single submittal may be made for a multiple unit station. The submittal should combine those sections that are common to all units at the station; however, for units with separate radwaste systems, the submittal shall specify the releases of radioactive material from each unit. Semiannual Radioactive Effluent Release Reports are required until the frequency change to annual is approved by the NRC in the LaSalle Technical Specifications.

O 12-63 )

I 9

LASALLE Revision 1.9 April 1998 O 12.6 REPORTING REQUIREMENTS 12.6.3 Offsite Dose Calculation Manual (ODCMP l 12.6.3.1 The ODCM shall be approved by the Commission prior to implementation.

12.6.3.2 Licensee-initiated changes to the ODCM:

a. Shall be documented and records of reviews performed shall be retained as required by Specification 6.5.8. This documentation shall contain:
1. Sufficient information to support the change together with the appropriate analyses or evaluations justifying the changes (s); and
2. A determination that the change will maintain the level of radioactive effluent control required by 10 CFR 20.1302,106,40 CFR Part 190,10 CFR 50.36a, '

and Appendix 1 to 10 CFR Part 50 and not adversely impact the accuracy or reliability of effluent, dose, or setpoint calculations. i

a. Shall become effective after review and acceptance by the Onsite Review and investigative Function and the approval of the Plant Manager on the date specified by the Onsite Review and Investigative Function.
b. Shall be submitted to the Commission in the form of a complete, legible '

O~ copy of the entire ODCM as a part of or concurrent with the Radioactive Effluent Release Report for the period of the report in which any change to the ODCM was made effective. Each change shall be identified by markings in the margin of the affected pages, clearly indicating the area of the page that was changed, and shall indicate the date (e.g.,

month / year) the change was implemented.

. 'The OFFSITE DOSE CALCULATION MANUAL (ODCM) is common to LaSalle Unit 1 l
and LaSalle Unit 2.

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12-64

LASALLE Rsvision 1.9 l April 1998 12.6 REPORTING REQUIREMENTS 12.6.4 Maior Chanoas to Radioactive Waste Treatment Systems 12.6.4.1 Licerise initiated major changes to the radioactive waste treatment systems (liquid and gaseous):

i

a. Shall be reported to the Commission in the Monthly Operating Report for the period in which the evaluation was revicwed by the Onsite Review and Investigative Function. The discussion of each change shall contain:
1. A summary of the evaluation that led to the determination that the change could be made in accordance with 10 CFR 50.59;
2. Sufficient detailed information to totally support the reason for the change without benefit or additional or supplemental information;
3. A detailed description of the equipment, components and processes involved and the interfaces with other plant systems;
4. An evaluation of the change which shows the predicted releases of radioactive materials in liquid and gaseous effluents waste that differ from those previously predicted in the license application and amendments thereto;
5. An eva!uation of the change which shows the expected maximum exposures to individual in the unrestricted area and to the general population that differ from those previously estimated in the license application and amendments thereto;
6. A comparison of the predicted releases of radioactive materials,in liquid and gaseous effluents, to the actual releases for the period to when the changes are to be made;
7. An estimate of the exposure to plant operating personnel as a result of the change; and
8. Documentation of the fact that the change was reviewed and found acceptable by the Onsite Review and Investigative Function.
b. Shall become effective upon review and acceptance by the Onsite Review and Investigative Function.

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12-65

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