ML022120437

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Emergency Implementing Procedure EI-9, Revision 9, Offsite Radiological Monitoring
ML022120437
Person / Time
Site: Palisades Entergy icon.png
Issue date: 07/23/2002
From: Doolittle W, Ridley J
Consumers Energy
To: Mcknight J
Office of Nuclear Reactor Regulation
References
Download: ML022120437 (23)
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Text

Date Entered: Jul 23, 2002 TO:

USNRC/WASHINGTON JMCKNIGHT Copy Number:

145 TRANSMITAL NUMBER:

222741 PROCEDURE NUMBER: EI-9 TITLE: OFFSITE RADIOLOGICAL MONITORING TRANSMITTAL: LISTED BELOW ARE NEW/REVISED PROCEDURES WHICH MUST BE IMMEDIATELY INSERTED INTO OR DISCARDED FROM YOUR PROCEDURE MANUAL.

Action Required Section or Description REMOVE AND DESTROY EI-9, R/9, ENTIRE PROCEDURE REPLACE WITH EI-9, R/9, ENTIRE PROCEDURE EDITORIAL/WORD 2000 CONVERSION SIGN, DATE, AND RETURN THE ACKNOWLEDGEMENT FORM WITHIN 10 DAYS TO THE PALISADES PLANT DOCUMENT CONTROL.

SIGNATURE OR INITIALS DATE

Procedure No EI-9 Revision 9 Issued Date 7/23/02 PALISADES NUCLEAR PLANT EMERGENCY IMPLEMENTING PROCEDURE TITLE: OFFSITE RADIOLOGICAL MONITORING edure Sponsor Date WlDoolittle 4/25/97 Technical Reviewer Date JSRidley 4/23/97 User Reviewer Date

PALISADES NUCLEAR PLANT Proc No El-9 EMERGENCY IMPLEMENTING PROCEDURE Revision 9 Page i TITLE: OFFSITE RADIOLOGICAL MONITORING Table of Contents 1.0 PERSONNEL RESPONSIBILITY...............................................................................

1 1.1 TECHNICAL SUPPORT CENTER (TSC)/EMERGENCY OFFSITE FACILITY (EOF) HEALTH PHYSICS (HP) SUPPORT GROUP LEADER.... 1 1.2 OPERATIONAL SUPPORT CENTER (OSC) HEALTH PHYSICS (HP)

SUPERVISOR...........................................................................................

1 1.3 EMERGENCY OPERATIONS FACILITY (EOF) HEALTH PHYSICS SUPPORTTEAM.......................................................................................

1 1.4 SITE EMERGENCY DIRECTOR (SED)IEOF DIRECTOR........................ 1 1.5 OFFSITE MONITORING TEAM.................................................................

2 2.0 PU R PO SE......................................................................................................................

2

3.0 REFERENCES

2 3.1 SOURCE DOCUMENTS............................................................................

2 3.2 REFERENCE DOCUMENTS.....................................................................

2 4.0 INITIAL CONDITIONS AND/OR REQUIREMENTS..................................................

3 5.0 PRO C EDU RE.................................................................................................................

4 5.1 OSC HEALTH PHYSICS SUPERVISOR..................................................

4 5.1.1 Equipment..........................................................................

4 5.1.2 Briefing.................................................................................

4 5.2 OFFSITE MONITORING TEAM.................................................................

5 5.2.1 Deployment Preparation....................................................

5 5.2.2 Emergency Vehicle and Equipment.................................. 5 5.2.3 Meteorological Data...........................................................

5 5.2.4 Offsite Monitoring Team Log.............................................

5 5.2.5 Evacuation Monitoring.......................................................

6 5.2.6 Guidelines for Plume Tracking, Surveying, Sampling......... 6 5.2.7 Field Collection and Determination of Airborne Concentration/Contamination Surveys............................

6 5.2.8 Worker Protection Against Iodine.................................... 6 5.2.9 Reporting............................................................................

6

PALISADES NUCLEAR PLANT Proc No El-9 EMERGENCY IMPLEMENTING PROCEDURE Revision 9 Page ii TITLE: OFFSITE RADIOLOGICAL MONITORING Table of Contents 6.0 ATTACHMENTS AND RECORDS.............................................................................

7 6.1 ATTACHMENTS.......................................................................................

7 6.2 RECO RDS.................................................................................................

7 7.0 SPECIAL REVIEW S..................................................................................................

7 ATTACHMENTS, "Offsite Monitoring Team List", "Air Sample Analysis Sheet", "Dose Equivalent Iodine Conversion Factors", "Dead Time Correction Curve", "Offsite Monitoring Team Log", "Operational Support Center/Emergency Offsite Facility Phone List"

PALISADES NUCLEAR PLANT EMERGENCY IMPLEMENTING.PROCEDUR.

Proc No EI-9 Revision 9 Page 1 of 7 TITLE:.; O FFSITE RADIOLOGICAL MONITORING USER ALERT REFERENCE USE PROCEDURE Refer to the procedure period cally to confirm that all procedure segments of an activity,Wilti6" or are being performed. W.here rqqtuire.d. sign appropriate sign-off blanks to certify that all segments are complete.

1.1 TECHNICAL SUPPORT CENTER (TSC)IEIVIAGE NCY OFFSITE FACILITY (EOF)

HEALTH PHYSICS (HP) SUPPORT GROUP L2EADER The TSC and/or EOF HP Support Group Lead*-(s), orcdesigrlate(s), are responsible for ensuring that offsite radiation rMOnitoring is pefrfrhed.

1.2 OPERATIONAL SUPPORT CENTER (OSC) HEALTH PHYSICS (HP)

SUPERVISOR An OSC HP Supervisor(s) is responsible for tracking, organizing, briefing, and directing the Offsite Monitoring Team(s) at the request for offsite monitoring by the TSC HP Support Group.

1.3 EMERGENCY OPERATIONS FACILITY (EOF) HEALTH PHYSICS SUPPORT TEAM When the EOF is activated, responsibility for tracking, and direction of the Offsite Monitoring Team(s) is transferred to the EOF HP Support Team.

1.4 SITE EMERGENCY DIRECTOR (SED)/EOF DIRECTOR Based on who has command and control, either the SED or EOF Director has the responsibility to authorize the use of Potassium Iodide (KI) as a thyroid blocking agent.

'8 1-D PERSONNEL RESPONSIBILITY

PALISADES NUCLEAR PLANT Proc No EI-9 EMERGENCY IMPLEMENTING PROCEDURE Revision 9 Page 2 of 7 TITLE: OFFSITE RADIOLOGICAL MONITORING 1.5 OFFSITE MONITORING TEAM The Offsite Monitoring Team Technicians are responsible for performing surveys, monitoring personnel and equipment, collecting environmental samples and TLDs, analyzing air samples, and reporting results to the OSC, or the EOF when activated.

2.0 PURPOSE To provide guidelines for offsite radiological monitoring during an emergency.

3.0 REFERENCES

3.1 SOURCE DOCUMENTS 3.1.1 Site Emergency Plan Section 7, "Emergency Facilities and Equipment" 3.1.2 EPA-400 Manual, "Protective Action Guidelines and Protective Actions for Nuclear Incidents 1990" 3.1.3 EA-JLF-93-01 3.1.4 EA-JLF-94-02 3.1.5 EA-JLF-97-004 3.1.6 10CFR20 Subpart C 3.1.7 Docket 50-255 - License DPR-20 Palisades Plant, Technical Specification Change Request Regarding Elimination of Post - Accident Sampling System Requirements 3.2 REFERENCE DOCUMENTS 3.2.1 Health Physics Procedure HP 2.18, "Personnel Contamination" 3.2.2 Emergency Implementing Procedure El-10, "Accident Environmental Assessment" 3.2.3 Emergency Implementing Procedure El-13, "Evacuation/Reassembly" 3.2.4 Emergency Implementing Procedure El-i6.1, "Maintenance of Emergency Equipment" 3.2.5 Emergency Implementing Procedure EI-2.1, "Site Emergency Director" 3.2.6 Palisades Administrative Procedure 10.46, "Plant Records"

PALISADES NUCLEAR PLANT EMERGENCY IMPLEMENTING PROCEDURE Proc No EI-9 Revision 9 Page 3 of 7 TITLE. OFFSITE RADIOLOGIEALMONITORING INITIAL CONDITIONS AND/OR REQUIREMENTS Offsite monitoring shall be initiated at a Site Area. Emergency or above, or when the results of onsite monitoring verify thata..reease of radioactive material has occurred, area and!or-process monitors indicatera'telease has. occurred,: cQnditions current and impending warrant monitoring, or upon request by the SED or TSC HP Support Group.

All members-of -the,Offsite Radiation Monitoring-Teams shall, perform their actions in such a manner that they keep their exposure As Low As Reasonably Achievable (ALARA), and do not exceed the following yearly dose control Tevels(without SED approval):

AREA EXPOSED

-Total Effective Dose Equivalent (TEDE)

-Shallow Dose Equivalent (SDE) for the Whole Body and Extremities

-Lens of eye (LDE)

CONTROL LEVEL (rem) 2.0 (Consumers Dose) 4.0 (All Dose) 40 (All Dose) 12 (All Dose) 4.3 Emergency Implementing Procedure EI-2.1, "Site Emergency Director," gives requirements for authorizing exposure in excess of the Consumers Energy Administrative Dose Control Levels and Federal Regulatory dose limits.,

4.4 Turnover of the Offsite Monitoring-Teams frorn-the OSC to the EOF HP Support Group should be-ompleted via radio. Telephone communications-may be used if radio problems are encountered. The following information should be included in this turnover:

a.

Number of teams

b.

Team members

c.

Team(s) location,

d.

Surveys/Samples performed, results

e.

Team Members Available Dose 4.0 4.1 4.2 I6_

PALISADES NUCLEAR PLANT EMERGENCY IMPLEMENTING PROCEDURE Proc No EI-9 Revision 9 Page 4 of 7 TITLE: OFFSITE RADIOLOGICAL. MONITORING 5.1.1 Equipment Ensure each Offsite Monitoring Team is equipped with instrumentation and personal protective equipment (PPE) needed for potential and actual radiological hazards encountered in the field. Guidelines for when to use PPE should be understood.

5.1.2 Briefing Designate and brief the Offsite Monitoring teams prior to dispatch as outlined in, Section 1 of this procedure.

5.0 PROCEDURE USER ALERT REFERENCE USE PROCEDURE Refer to the procedure periodically to confirm that all procedure segments of an activity will be or are being performed. Where required, sign appropriate sign-off blanks to certify that all segments are complete.

5.1 OSC HEALTH PHYSICS SUPERVISOR

PALISADES NUCLEAR PLANT Proc No El-9 EMERGENCY IMPLEMENTING PROCEDURE Revision 9 Page 5 of 7 TITLE:- OFFSITE RADIOLOGICAL MONITORING 5.2 OFFSITE MONITORING TEAM 5.2.1 Deployment Preparation' Refer to Attachment1,',Section lb of-this~procedureo ensure all necessary equipment is available. Obtain a briefing from an OSC HP Supervisor prior to dispatch.

5.2.2 Emergency Vehicle and Equiprhent' C....

Perform emergency vehicle and emergory equipment checks as soon as possible upon dispatch,.in an area.of low backgrmmd, in.accordance with Attachment 1, Section 2, of this procedure.

5.2.3 Meteorological Data Verify given meteorological data in the field by observation of the flag, cooling tower plume, movement of trees, or other suitablie meah.- If the observations conflict with the given data, contact the OSC to verify meteorological data 'and, if needed, redetermine affected areas to be monitored.

5.2.4 Offsite Monitoring Team Log Each monitoring team shall'keep a 'log of 'iertifient data. Record on Attachment 5 of this procedure.

a.

Significant Plant conditions, including Emergency Classification

b.

Meteorological data, observations

c.

Communications, requests

d.

Surveys performed, locations, routes

e.

Dose tracking for team members

f.

Problems, deficiencies noted

g.

Personnel monitored at Reassembly Control Point

h.

Technician initials

PALISADES NUCLEAR PLANT Proc No EI-9 EMERGENCY IMPLEMENTING PROCEDURE Revision 9 Page 6 of 7 TITLE: OFFSITE RADIOLOGICAL MONITORING 5.2.5 Evacuation Monitoring Refer to Attachment 1, Section 3 of this procedure for Evacuation Monitoring.

5.2.6 Guidelines for Plume Tracking, Surveying, Sampling Refer to Attachment 1, Sections 4 and 5 of this procedure. Record data on Attachments 2 and 5 of this procedure.

5.2.7 Field Collection and Determination of Airborne Concentration/Contamination Surveys Refer to Attachment 1, Section 5 of this procedure for Airborne sampling and Contamination Surveys.

5.2.8 Worker Protection Against Iodine

a.

Thyroid blocking agents shall be considered if a significant iodine release has occurred or is imminent.

b.

Authorization to use thyroid blocking agents shall be given by the SED or EOF Director. Once authorization has been given, each worker shall personally decide whether to take the blocking agent.

c.

The thyroid blocking agent is in the form of Potassium Iodide (KI) tablets in the amount of 130 mg per tablet. These tablets should be made available on a basis of one tablet per day per worker for a maximum of ten days.

KI tablets administered three to four hours post exposure can reduce the thyroid dose by 50 percent. These tablets (KI) should be administered within four hours of exposure for maximum effectiveness.

5.2.9 Reporting

a.

Report results of surveys and sample analysis as soon as possible to the OSC or EOF by mobile radio. If this means of communication is not available/functional, use the nearest telephone available.

PALISADES NUCLEAR PLANT Proc No EI-9 EMERGENCY *IMPLEMENTING PROCEDURE Revision 9 Page 7 of 7 TITLE: -OFFSITE RADIOLOGICAL MONITORING 6.0 ATTACHMENTS AND RECORDS 6.1 ATTACHMENTS 6.1.1, "Offsite Monitoring Teard List"

  • 6.1.2, "Air Sample Analysis Sheet"';

6.1.3, "Dose Equivalent Iodine Conversion Factors" 6.1.4, "Dead Time Correction Curve" 6.1.5 Attachment'5, "Offsite Monitoring Teamn Log""'

6.1.6, "Operational Support Center/Emergency Offsite Facility Phone List" 6.2 RECORDS Records generated by this procedure shall be filed in accordance with Palisades Administrative Procedure 10.46, "Plant Records."

7.0 SPECIAL REVIEWS The scope of this procedure does not include activities that require a 50.59 review per Palisades AdministrativeProcedure 10.41. "Procedure Initiation and Revision."

Therefore, changes to this proceduredo n6t-require a 50.59 review.

The scope of this procedure includes activities that require a PRC review per

  • Palisades Administrative Procedu re6O.41,;"Procedure Initiation and Revision."

Therefore, changes to this proceddre require a PRCOreview.

1;

ERC: 950/22*06 Proc No EI-9 Revision 9 Page 1 of 6 OFFSITE MONITORING TEAM LIST SECTION 1: DEPLOYMENT

a.

Review the Offsite Monitoring Deployment Kit (3-ring binder in OSC Emergency Kit). Contents include: Emergency Implementing Procedures EI-9, "Offsite Radiological Monitoring;" El-10, "Accident Environmental Assessment;" El 16.1, "Maintenance of Emergency Equipment;" EI-13, "Evacuation/Reassembly;" and copies of various forms for use in the field.

b.

Determine and obtain necessary equipment in accordance with assignment and the following equipment list:

1.

Primary and Secondary dosimetry.

2.

Interim protective clothing and respiratory equipment, based on Plant conditions and job assignment in desired area(s).

3.

Writing material.

4.

Emergency vehicle keys. (Stored in HP Key Locker and OSC Emergency Kit.)

5.

Radiation Detection Instrumentation (Instrumentation for emergency vans is stored in deployment kits located in the Fan Room behind the OSC). Perform Operational Checks of instruments prior to leaving the OSC.

c.

Obtain briefing from the OSC HP Supervisor in the following areas, if applicable:

1.

Meteorological data:

Wind direction Wind Speed Stability Class

2.

Plant conditions:

Affected Components/Areas Release Time Release Path Emergency Class

ERC: 950/22*06 Proc No EI-9 Revision 9 Page 2 of 6 OFFSITE MONITORING TEAM LIST

3.

Projected dose rates and airborne activity.

4.

Locations/routes to be surveyed.

(ie, nearest population center, three downwind sectors for plume, outer boundaries, centerline, leading edge, evacuation reassembly control point/monitoring station)

5.

Surveys/samples desired.

(ie, dose rates three inches and three feet from ground, open/closed

[ windows; surface contamination; airborne activity)

NOTE:

Initiate Emergency Implementing Procedure El-10, "Accident Environmental Assessment," and obtain replacement TLDs.

6.

Environmental samples and TLDs desihed.

7.

Optimum route to designated area, such that exposure is kept ALARA.

8.

Protective action(s) guidelines/limits.

9.

Communications, preferred and alternate methods, frequency, and emergency phone numbers. (Reference Attachment 6 of this procedure for preferred phone numbers.)

SECTION 2: VEHICLE AND EQUIPMENT CHECKS

a.

Start vehicle.

b.

Establish radio contact with the OSC to indicate operability.

c.

Perform vehicle checks (ie, fuel tank, lights, horn, wipers, seat belts).

d.

Emergency Implementing Procedure EI-16.1, "Maintenance of Emergency Equipment," Attachment 1, contains the inventory list for Kit 3. While a kit inventory is not necessary, this should be reviewed for knowledge of kit contents.

e.

Perform operational check of the inverter.

f.

Verify given met data by observation.

g.

Data logged, Attachment 5.

ERC: 950/22*06 Proc No El-9 Revision 9 Page 3 of 6 OFFSI*TE MON*TORING.TEAIM, LIST SECTION 3: EVACUATION MONITORING

a.

Proceed to the assigned Reassembly.,ont*l

'Point/Monitoring Station (established at: Access Road; Parking Lot of Van Buren State Park; or, Parking Lot of Covert-Townsbip Park) and ascertain habitability prior to establishing the monitoring~statjpn_._If personnel cannot be deconned at the selected location, they.l..

houil

  • siert to the Allegan Service Center. Reference Emergency implemi enting Procedure E1-13, "Evacuation/Reassembly," for gudarpce.- Contact the OSC so that arrangements can be made for Use6 of the AllegIan Service Center.

El-13, "Evacuation/ReassembJy, '.mplemtented: Personnel surveyed, dosimeters read, dosimetry collected, etc.

c.

Personnel decontaminated in, acco-rdaep. with Health Physics Procedure HP 2.18, "Personnel Coontamination," (copy of HP 2.18 and forms are indecoan kit).

,d.

Data logged, Attachment 5.

e.

Data reported to OSCor EOF.QE;.

p

ERC: 950/22*06 Proc No El-9 Revision 9 Page 4 of 6 OFFSITE MONITORING TEAM LIST SECTION 4: PLUME TRACKING NOTE:

The following guidance is an aid only in initially locating and following the plume.

a.

Using given meteorological data and the 10-mile Emergency Planning Zone (EPZ) map, a fair idea can be quickly obtained of the possible location of the plume. Using the wind speed and time from release data, the leading edge of the plume can be projected and followed.

NOTE:

Plume location and dose rate information shall be reported as soon as possible.

This information is vital for Members of the Public Dose Assessment and Protective Action Recommendations.

b.

Traverse the plume to determine outer boundaries, centerline, and respective dose rates.

1 The survey instrument should be held at an open window of the vehicle, the meter monitored continuously.

2.

When an increase in dose rate is noted, record the odometer reading, relative map location, dose rate, and time. (When an air sample is taken, all data should be recorded on Attachment 2.)

3.

Continuing slowly, record dose rate increases and odometer readings to the centerline of the plume, where the dose rate wilt be at a maximum, periodically checking open vs closed beta window dose rates for the presence of the plume at ground level.

4.

At the centerline, unless high dose rates prohibit, obtain an air sample (iodine and particulate) and survey for dose rates at three inches and three feet from the ground. Check open and closed beta window dose rates, and take smear(s) for loose surface contamination. If centerline open/closed window readings indicate there is no ground level plume present, the air sample and surface contamination survey may be omitted. Record all data on Attachment 2.

5.

Continue to the opposite plume boundary, noting dose rates and odometer readings, and finally, the relative map location of the outer boundary.

ERC: 950/22*06 Proc No El-9 Revision 9 Page 5 of 6 OFFSITE MON~q'*O*IING!-*

  1. 'MLIST
c.

When traversing the plume, keep vehicle wkidoWs 'And vehts closed, except for that necessary to take dose rate readings en route. Avoid dusty, gravel, or dirt roads when traversingth el*lumre. Periodi'ally perform personnel and vehicle interior surveys for contamination in a low background area.

If'minor contamination is foundýdedonitarninate, if possible. Record data on. *Gross vehicle aird Irsothberdecontamindtion should not be

- attemkpted until the-tea,, is -reca1fd-. R6port gross contamination results to the OSC or EOF for'guidarhe and' i61tImntd 1.cdtion for Vehicle and/or Personnel decontamination.

d. -

When traversing or'sampling in' 0groi'tr level pluhne, evaluate necessary protective clothing.

e..-

Check self-reading or electronicdo ýseteis froequently (ie, entry into plume, exit from plume), record times and dose received, and report to the OSC or EOF. Dose received per plume entry in addition to previous dose received in the current year should be closelytercked to ensure 'authorized dose control levels are not exceeded.

SECTION 5: AIRBORNE SAMPLINGAND CONTAMINATION'SURVEYS

a.

Field collection under emergency conditions should be a 5 ft3 sample, normally obtained by taking a 2 cfm sample for 2.5 minutes. A shorter sample would-be appropriate ih the presence of high dose rates.

b.-;

Complete Sections' 1 and 2 of Attacb*ient 2 todocument dose rates, contamination levels and air sampledata to'determine corrected volume.

Section 1 is to be completed for every air sample taken.

c.

Careftilly remove filter and carttidge.-.Mark the; direction of air flow on the silverzeolite cartridge with an arrbw"' Wanidle filters with care to prevent dros! Contamination dr loss of c'olIctedrmate*ial, using tweezers when possible-v NOTE:

If time constraints do not permit-completion of calculations, transmit count rate data to the OSC or EOF by mobile radio.

d.

Perform ihitialgross analysis using a PRM-6 count rate meter with an HP-210 probe, or equivalent.

ERC: 950/22*06 Proc No El-9 Revision 9 Page 6 of 6 OFFSITE MONITORING TEAM LIST

e.

Field determination of particulate Airborne Activity:

1.

Determine the background count rate with the HP-210 probe, or equivalent, in place on the sample holder.

2.

Place the particulate filter in the sample holder, upstream side up.

With the HP-210 probe, or equivalent, in place on the holder, the filter should be approximately 1/2 inch from the detector.

3.

Determine the gross particulate count rate.

4.

Complete Section 3 of Attachment 2.

5.

Place the sample in a bag or envelope, label with date, time sample started and ended, average flowrate, location sample was taken, and initial.

f.

Field determination of gross Iodine Activity.

1.

Determine the background count rate with the HP-210 probe, or equivalent, in the counting area.

NOTE:

Backside readings at '/2" are preferred, but if count rate is negligible use the frontside at 1/2".

2.

Determine the gross iodine count rate by placing the HP-210 probe, or equivalent, '/2" from the backside of cartridge.

3.

Complete Section 4 of Attachment 2.

4.

Place the cartridge in a bag, label same as for the particulate filter.

g.

Save all samples for further/future analysis, storing high level samples in a shielded area.

h.

Reevaluate protective measures necessary (protective clothing) based on determined airborne activity levels.

Proc No EI-9 AIR SAMPLE ANALYSIS SHEET Revision 9 Page 1 of 1

1.

RADIOLOGICAL DATA (Taken at Each Air Sample Location)

a.

3 foot: _

mR/hr(OW)-

mR/hr(CW) X 1BCF =

mrad/hr

b.

3 inch:

mR/hr(OW).-,..

mR/hr(CWVX

'BCF =

mrad/hr

c.

Ground Smear: _____7_cpm/1OOcm 2(Gross) -c pm (BKG) =

cpm (Net)

d.

Location:

1BCF = Beta Correction Factor Date:

Time:

2. AIRSAMPLEDATA Consumers Energy Sampler No:

Date:

Start Time:

Stop Time:

Sample Duration (min) X Flowrate (Cfm) = Total Volume (ft3)

Corrected Volume (Particulate and Iodine):

(Total Volume ft3

) (0.90) (2)8314 cc/ft3) =

cc

3.

PARTICULATE AIR SAMPLE ANALYSIS Instrument Model/Consumers Energy No PRM-6/,..,.

Efficiency Gross _cpm

- Background

.cpm

--.ccpm Calculation:

l[Ci/cc =

ccpm C/c (Corrected Volume ___

_cc (Ef

).....j (2.22E6 dpm/iCi)

4.

IODINE SAMPLE ANALYSIS Backside (Preferred)

Frontside _

(Check One)

Instrument Model/Consumers Energ'y No PM-6/

Gross _cpm

- Background-

,cpm=

ccpm Calculation:

laCi/cc =ccom 1Ci/cc (Corrected Volume cc) (2CF ccpm/PCi)

Completed By:

Reviewed By:

2Conversion Factor (CF) is 1.48E5 ccpm/pCi for backside count rates or 3.77E6 ccpm/pCi for frontside count rates. These factors are acceptable for reactor critical and up to 8 hr post reactor shutdown. After 8 hr post reactor shutdown, use Conversion Factors in Attachment 3, Table 1 or Table 2.

DOSE EQUIVALENT IODINE CONVERSION FACTORS TABLE 1 BACKSIDE (PREFERRED METHOD)

Proc No El-9 Revision 9 Page 1 of 2 TIME SINCE RX SHUTDOWN ccpm/i.Ci (HRS) 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 3.00 4.00 5.00 6.00 2.73E+5 2.40E+5 2.23E+5 2.1OE+5 2.OOE+5 1.92E+5 1.85E+5 1.80E+5 1.61 E+5 1.48E+5 1.38E+5 1.30E+5 TIME SINCE RX SHUTDOWN ccpm/gCi (HRS) 7.00 8.00 9.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 1.23E+5 1.17E+5 1.12E+5 1.07E+5 9.93E+4 9.26E+4 8.69E+4 8.11E+4 7.66E+4 7.19E+4 6.75E+4 6.35E+4 TIME SINCE RX SHUTDOWN ccpm/ýlCi (HRS) 28.00 30.00 32.00 34.00 36.00 38.00 40.00 42.00 44.00 46.00 48.00 50.00 5.98E+4 5.63E+4 5.30E+4 4.99E+4 4.65E+4 4.36E+4 4.06E+4 3.80E+4 3.52E+4 3.28E+4 3.02E+4 2.79E+4

DOSE EQUIVALENT IODINE CONVERSION FACTORS TABLE 2 FRONTSIDE (ALTERNATE METHOD)

Proc No El-9 Revision 9 Page 2 of 2 TIME SINCE RX SHUTDOWN ccpm/jCi (HRS) 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 3.00 4.00 5.00 6.00 4.58E+6 4.51 E+6 4.47E+6 4.43E+6 4.36E+6 4.32E+6 4.25E+6 4.22E+6 3.99E+6 3.77E+6 3.56E+6 3.37E+6 TIME SINCE RX SHUTDOWN ccpm/gCi (HRS) 7.00 8.00 0.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 3.18E+6 3.01 E+6 2.84E+6 2.69E+6 2.40E+6 2.15E+6 1.92E+6 1.71 E+6 1.53E+6 1.36E+6 1.28E+6 1.24E+6 TIME SINCE RX SHUTDOWN ccpm/gCi (HRS) 28.00 30.00 32.00 34.00 36.00 38.00 40.00 42.00 44.00 46.00 48.00 50.00 1.20E+6 1.16E+6 1.13E+6 1.09E+6 1.05E+6 1.01 E+6 9.74E+5 9.43E+5 9.05E+5 8.7gE+5 8.41 E+5.

8.1 5E_+5

Proc No EI-9 Revision 9 Page 1 of 1 DEAD TIME CORRECTION CURVE Dead Time Correction Curve For PRM-6

'-I I I

I I

I I

I I

I

-I I

I I I

I I I

1 1 I I

I I

II I 100 120 140 160 180 200 220 240 260 280 300 320 340 360 380 400 420,440 460 480 500 Observed Count Rate (1,000 cpm) 1,400 E

CL 0

0 0

0

,-4 0

C)

-o a,

ERC: 950/22*06 OFFSITE MONITORING TEAM LOG Proc No EI-9 Revision 9 Page 1 of 1 Date:

Technicians:

TIME I DATA

Proc No EI-9 Revision 9 Page 1 of 1 OPERATIONAL SUPPORT CENTER /EMERGENCY OFFSITE FACILITY PHONE LIST OSC Director 764-2109 (OSC Director)*

764-2110 (TIF) 764-2243 (OSC Communicator)

Health Physics 764-2409 (OSC)*

764-2410 (OSC)*

637-7397 (EOF)*

637-6695 (EOF)*

764-2385 (EOF, Plant Phone) 764-2384 (EOF, Plant Phone)

Fax Line 764-2730 (OSC) 458-7815 (EOF) 458-8078 (EOF)

Chemistry 764-2596 (OSC)

General Use 764-2346 (OSC)

Locker Room 764-2600 764-2606 Power Failure Only 764-8994 (OSC)*

  • Preferred Phones for communications from Offsite Monitoring Teams
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