. - . NINE MILE POINT NUCLEAR STATION , EMERGENCY PLAN AND PROCEDURES PROCEDURE NO. EPP-6 INPLANT EMERGENCY SURVEYS FOR INFORMATION ONI.Y DATE AND INITIALS APPROVALS SIGNATURES REVISION 6 REVISION 7 REVISION 8 Chemistry & Radiation Management Superintendent g 7/s/fd. '/r.$ E. W. Leach f L.) _ ~4 "' ' ' '" Station Superintend NMPNS - AQ OHh , , T. V. Roman sufwe y M 7,5cs G , '~ . 4 /u, General Superintendent Nuclear Generation Chairman of S.O.R.C. N (bb4 /~//7/G J T. J. Perkins [/ F I/# ' V a Summarv of Pages Revision 7 Effective 6/24/83 Page Date 1, 2 May 1982 i, 3 -9 June 1983 NIAGARA MOHAWK POWER CORPORATION THIS PROCEDURE NOT TO BE USED AFTER June 1985, SUBJECT TO PERIODIC REVIEW. ~ 830Pf050687 830729 PDR ADOCK 05000220 p PDR _ - _ . - - _ _ _ .. - .- _ _ _ _ _ _ _ - - _ - - . _ _ _ . .- . _ . _ _
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The purpose of this procedure is to define the responsibilities andactions of station personnel when performing investigatory survey andsampling operations during or after an emergency. This includesdirect radiation measurements and air sampling performed in thecourse of Damage Control operations.
2.0 REFERENCES
2.1 EPP-1 - Radiation Emergencies
2.2 EPP-10 - Emergency Equipment Inventories and Checklists
Assumes the role of Emergency Director, until properly relieved.a.
b. Evaluates the consequences of a radiological emergency, as itpertains to nuclear safety, and the overall operation of theplant; including the potential spread of radioactive material tonon-affected areas and systems. 6
3.2 Radiological Assessment Coordinator
a. Responsible to the Emergency Director for managing theradiological monitoring and assessment aspects of an emergency.
I'b. Provide technical and administrative direction to the Station
a. Re sponsible to the Ra diological Assessment Coordinator forproviding technical and administrative direction to the InplantSurvey Teams during an emergency condition.
3.4 Inplant Survey Teams
a. Responsible to the Station Survey / Sample Team Coordinator fori
performing appropriate radiation surveys and post-accident I
sampling operaHnna par applicable station and Emergency PlanImplementing procedures.
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4.0 EQUIPMENT
4.1 Equipment Location 6
The equipment used to make an emergency inplant survey (with theexception of the surveyors film badge and dosimeters) can be found in '
the Inplant Survey Ki ts located in the OSC emergency cabinet. Inaddition, survey equipment may also be made available from the
,
Instrument Storage Room.
4.2 Eouipment Summary
The complete description of the equipment contained within theInplant Survey Kits is contained in EPP-10 " Emergency EquipmentInventories and Checklists".
4.2.1 Protective Clothing
The following protective clothing is available and may be worn ifnecessary.
a. Coverallsb. Shoe Coversc. Rubber Bootsd. Cotton Hoodse. Cotton Glovesf. Respirators with charcoal cartridgesg. Self-Cantained Breathing Apparatus (Scott Pak II)
EPP-6 -2 May 198 2
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4.2.2 Survey Equipmentn. ,
! The following survey equipment is available and should be used forthe surveys.
a. Count Rate Meter (GM Type)b. Dose Rate Meter (Ion Chambrr Type)
High Level Dose Rate Meter.(Teletector or equivalent)c.d. High Volume Air Sampler (AC)e. Fiberglass Particulate Filterf. Charcoal Cartridgesg. Silver Zeolite Cartridgesh. Emergency Procedures Sinder with Survey Logs and Maps
4.2.3 Coramunication Equipment
a. High Band Portamobile Radio,
b. Station Gaitronics System (available in Station Bldgs.) '
Station Telephone System (available in Station Bldgs.)c.
5.0 PROCEDURE
5.1 Inolant Survey Teans.
5.1.1 Obtain briefing from the Emergency Director, Radiological AssessmentCoordinator, Station Survey / Sample Team Coordinator or the Chemistryand Radiation Protection Team Coordinator regarding:
a. Monitoring and sample collection locations;b. required monitoring data;
anticipated levels of radiation and contambation en route;c.
d. suggested routes;e. required protective gear;f. exposure limits allowed for this entry.
3.1.2 Obtain needed emergency equipment from the emergency kits or fromnormal station supplies. This equipe:ent should include:
5.1.4 Prior to. leaving equipment storage location, obtain ,necessarycommunicatione equipment and assure its operability by establishing <
communications with the TSC. Inplant survey teams will utilize radiochmmel #1 (Inhouse repeater) and will be identified by numericaldesignations (ie. Inplant 1,2,3, etc.).
5.1.5 When accompanying Damage Control Teams, verify that a Radiation Work -Permit has been written and that team members are properly outfittedwith protective gear and dosimetry.
5.1.6 When conducting surveys separate from Damage Control Team entries,proceed to the locations requiring monitoring per step 5.1.1, and useappropriate station floor plans and survey forms contained in theInplant Emergency Survey Binder to record results. Furthermore,ensure that a HRA Entry and Survey Log or a Radiation Work Permit isfilled out to record exposures of survey team members.
5.1.7 If airborne activity is suspected because of:A ventilation monitor in the alarm condition, ora.
b. A CAM in the alarm condition, orc. Visual observations detect the presence of steam which could be
radioactivethen:
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Full protective clothing including Scott Air Paks should bedonned.
5.1.8 a. If the survey consists of taking radiation measurements on thestack sample line when the stack monitor is approaching itslimit per N1-PSP-12, ensure the 4 "C" cell batteries designatedfor use as spares in the installed interim High Range StockMonitor are brought from the Control Room Dose Estimate Cabinetor Station Storeroom to the 256' elevation of the Screenhouse,
b. When entering an area of suspected radiation, the survey meters(normal and high level) should first be on the highest range ofthe instrument, then downscaled until a reading is obtained.The Teletector Probe should be extended so that distance can beput between the surveyor and the probe.
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c. When conducting surveys, voice communications (e.g. radio,,
Gaitronics, etc.) with the TSC or Control Room should be - 7,
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| maintained as appropriate. In addition, when approaching an; area requiring monitoring, do not approach the level via thel
elevator. Use stairs only.
3.1.9 a. The area should be entered cautiously making observations of anyfailed equipment which could have caused the alarm,
b. Survey area to verify validity of monitor readings as per RP-3" Performance of Radiological Surveys". Survey the area asquickly as possible to ascertain the cause of the highradiation. Note any unanticipated high radiation levels, theirlocation, and time and date of reading.
4
NOTE: Keying a radio microphone close to a RO-2A dose rate metermay cause an upscale deflection of that instrument. Ifthis should happen, repeat survey maintaining an adequatedistance between microphone and dose rate meter.
EPP-6 -4 June 1983
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5.1.10 If dose rates greater than 10,000 mrem /hr are encountered, exitimmediately and report results to the S tation Survey / Sample Team. .
'- Coordinator, per Step 5.1.1, or others, as directed. Area should be
reentered only after a survey planning session has been held perEPP-15.
5.1.11 If airborne activity is suspected, a high volume air sample vill betaken in the suspected area (2 to 10 micute Particulate and Iodinesample) as per N1-RTP-75. Record flow rate and the time the sampleis started and stopped on Figure 1. If field analysis is possiblecontinue with Step 5.1.12, if not sMip to Step 5.1.13.
5.1.12 After obtaining samples, travel to an area of low background(preferably < 300 cpm but not to exceed 500 cpm) and run highvolume air sampler for approximately 1 minute to clear inert gasesfrom the cartridge.
NOTE: If sample (s) have been taken on Silver ZeoliteCartridges (s) the post sampling purge is not required.
Obtain a background count and count the particulate filter and lodine,
cartridge separetly. During counting hold the probe approximately '
1/2 to 3/4 inch from the cartridge or filter and count for a total Itime of 1 minute. Log the maximum count rates obse ved en the survey 7data sheet (Figure 1).
5.1.13 The results of all surveys shall be immediately recorded on Figure j1.0 and reported (via radio, Gaitronics, etc.) to the Station i
. Survey / Sample Team Coordinator in the TSC or the SSS in the Control|Room, as appropriate, so that proper evaluation can be made of the i
conditions. This data will be logged on Figure 2 and provided to || appropriate survey coordinator for review, posting and action. !
|5.1.14 Filters, cartridges and/or liquid samples shall be placed in separate |containers (e.g. envelopes, plastic bags, etc.) to avoid cross j
contamination of samples and counting facilities.||5.1.15 Return labeled air sample filters and cartridges requiring further|analysis to the Chemistry Laboratory. Samples should be wrapped in ;
another layer of polyethylene wrap or plastic bag prior to placing inthe GeLi cave.
NOTE: Assure adequate integrity of sample containers and strict.
handling to avoid contamination of counting facilities. If'
a very high level (> 1 R/hr), bring to High LevelLaboratory hood and consult with the Station Survey / Sample '
Team Coordinator for recommend course of action. Refer toEPP-15 for general instructions concerning emergencyexposure, dosimetry and respiratory protection.
EPP-6 -5 June 1983
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5.1.16 Return all Inplant Survey Data Sheets to a Chemistry and RadiationProtection Department Supervisor or Chief Technician in the OSC forforwarding to the Station Survey / Sample Team Coordinator or other's asdirected.
5. 2 Station Survey / Sample Team Coordinator
5.2.1 Request a briefing on the emergency condition and emergency actionsstatus from the Emergency Directcr and/or the Radiological AssessmentCoordinator.
5.2.2 Determine the need for additional equipment, supplies, and manpowerand make a request for same.
5.2.3 Based on briefings with the Radiological Assessnent Coordinatorand/or Emergency Director contact the Chemistry and RadiationProtection Team Coordinator in OSC (via dedicated telephone line,Gaitronics, etc.) and brief him on the station status and emergencyactions status. Assign personnel to perform Inplant surveys andsampling through the Chemistry and Radiation Protection TeamCoordinator or the OSC Coordinator. Priorities for assignments willdepend on station conditions and should follow the following order:
a. Support of source term calculations neeced for initial dose ~
projecticus when normal effluent monitors are inoperable,offscale, or not in the release pathway. 7
b. Inplant nurveys to calculate initial source term.c. Accompany initial Damage Control Team (s) entering affected areas.d. Accompany subsequent reentry teams.e. Inplant Sample Collectionsf. Sample Analysesg. Other missions as required.
NOTE: When implementing N1-PSP-12 " Interim High Range Stack Monito rProcedure", ensure an individual is sent to the Control Room toassist Chemistry and Radiation protection Assistant Supervisori
with communications.,
5.2.4 For each monitoring assignment, ensure that team members are briefedon the following:
a. monitoring and sample collection location (s)b. required data
j c. anticipated radiological conditions-
' d. required protective gear and dosimetryprimary and alternate ingress / egress routese.
f. maximum stay times and radiation field limitations requiringspecial authorization
EPP-6 -6 June 1983
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following, if applicable:5.2.5 Ensure that each group of team cembers on a given miasion has the
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a. proper monitoring and communications equipmentb. copy of pertinent proceduresc. maps / drawings marked up to show monitoring / sample collection
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points, if necessaryd. any special equipment required to contain and/or transport
semple (s)e. Radiation Work Permit (if required)f. proper dosimetry and protective gear
NOTE: Inplant survey teams will utilize radio channel #1 7(In-house repeater) and will be identified by numericaldesignaticas (ie. Inplant 1,2,3, etc.)
5.2.6 If the emergency condition is expected to continue beyond the normalemployee work stopping time or if the emergency has continued formore than 6 hours, commence to develop contingency plans forproviding 24 hour coverage for emergency survey activities.
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EPP-6 -7 June 1983
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EPP-6, FIGURE 2, EPP-7, FIGURE 2
- N U MOHAWK hmummeA SURVEY T. AM RE'0RT =??'5~Y NIAGARA us 1a m a m |s e ~ ~ ?"
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TO: Survey / Sample Team Coorcinator TSC D EOFOFROM: Survey Team ID
Chemistry & RadiationManagement Superintendent 7 7/Q 7///fjE. W. Leach (U _ f of' - 'r /
Station Superintende,
NMPNST. W. Roman A NAL /u 9 h- . 1hGeneral Superintendent
Nuclear GenerationChairman of S.O.R.C. F / / q[F::- 7[(DT. J. Perkins i.Q.[[ M k -ftP -T'If
/ / (/Summary of Pages
, REVISION 6 (Effective 6/24/S3)PAGE DATE
1,2,15.21 May 1962i,3-14,22,23 June 1983
NIAGARA MORAWR POWER CORPORATION
THIS PROCEDURE NOT TO BEUSED AFTER June'1985,SUBJECT TO PERIODIC REVIEW.
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EPP-7
60WNWIND RADIOLOGICAL MONITORING'
Section Contacts Page
1.0 Purpose 1
2.0 References 1
3.0 Responsibilities 1
4.0 Equipment 2
5.0 Procedure 3-
5.1 Downwind Survey Teams 3
5.2 Environmental Survey / Sample Team Coordinator 8
FIGURE 1 Inplant/ Downwind /Re-Entry Survey Data Sheet 13
FIGURE 2 Survey Team Report 14 .
FIGURE 3 Onsite Survey / Sample Locations 13
FIGURE 4 Offsite Survey / Sample Locations 16
k FIGURE 5 Table of Onsite and Offsite/ Survey / SampleLocations 17
FIGURE 6 NMP Unit 2 Evacuation Assembly Areas 22 '
EPP-7 -1 June 1983
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! EPP-7Ii DOWNWIND RADIOLOGICAL MONITORING'
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1.0 PURPOSE
The purpose of this procedure is to define the responsibilities andactions of station personnel when performing surveys of onsite andoffsite areas in response to an emergency condition.
2.0 REFERENCES
2.1 EPP-8 - Onsite and Offsite Dose Assessment Procedure
2.2 EPP-10- Emergency Equipment Inventories and Checklists
2.3 EPP-16- Environmental Monitoring
2. 4 EPA-520/1-75-001 - Manual of Protective Action Guides and ProtectiveActions for Nuclear incidents.
a. Assumes the role of Emergency Director, until properly relieved.
b. Evaluates the consequences of a radiological emergency, as itpertains to nuclear safety and the overall operation of theplant. including the accidental release of radioactive materialto onsite and offsite areas.
3.2 Radiological Assessment Coordinator
a. Responsible to the Emergency Director for managing the
radiological monitoring and assessment aspects of an emergency.
b. Provide technical and administrative direction to the
Environmental Survey / Sample Team Coordinator and staff.
3a. Responsible to the Radiological Assessment Coordinator. for .;providing technical and administrative direction to onsite andoffsite survey teams during an emergency.
3.4 Downwind Survey Teams
a. Responsible to the Environmental Survey / Sample Team Coordinatorfor performing appropriate environmental surveys and samplingoperations.
4.0 EOUIPMENT
4.1 Equipment Location
The equipment used to make a downwind survey (with the exception ofthe surveyor's film badge and dosimeter) can be found in the DownwindSurvey Kit A or B located in the OSC emergency cabinets or DownwindSurvey Kit C located in the On-Call Chemistry and RadiationManagement Department vehicle. In addition a Downwind Survey Kit isalso located at the alternate EOF for use in the event onsiteradiological conditions prevent survey teams from gaining access totheir required equipment.
4.2 Usually three (3) fully . equipped teams will be dispatched forenvironmental monitoring of emergency conditions. The completedescription of the equipment contained within the Downwind SurveyKits is contained in EPP-10 " Emergency Equipment Inventories andChecklist".
4.2.1 Protective Clothing
The following protective clothing is available and may be worn ifnecessary. Discretion should be used to not alarm the public,therefore, conservative use of protective clothing is recommended,
a. Cov$rallsb. Soot Coverac. Rubber Bcotsd. Hoodse. Rubber Cotton Glovesf. Respirators with Charcoal Cartridges
EPP-7 -2 May 1982
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4.2.2 Survey Equipmenti
p The following * equipment is available and should be used for the'
' survey.
a. Count Rate Meter (GM type)b. Dose Rate Meter (Ion Chamber type)c. High Volume Air Sampler (DC)d. High Volume Air Sampler (AC) (Optional)e. Fiberglass Particulate Filtersf. Charcoal Sampling Cartridgesg. Silver Zeolite Cartridgesb. Emergency Procedures Binder with Survey Iags and Mapa
4.2.'3 Communications Equipment
a. High Band Portamobile Radiob. Mobile Radio (In Emergency Vehicles)
4.2.4 Transportation
a. The On-Call Chemistry and Radiation Management vehicle should beused when making downwind surveys. This vehicle is equippedwith a mobile radio for maintaining communications with theControl F. con c' ~*i Support Center, and/or EmergencyOperatons Facility.
b. In addition to the above mentioned vehicle, two other On-Callvehicles and seven supervisory cars are equipped with mobile
' radios and can be used for performing survey.
c. If the radiation emergency occurs during the off-hours when onlyshift coverage is available on-site, the emergency staff may
.. assemble at the alternate Emergency Operations Facility.Eq uipment from the emergency kits at the alternate EmergencyOperations Facility and company vehicles should be used to makethe downwind survey.
5.0 PROCEDURE
5.1 Downwind Survey Teams
5.1.1 Obtain briefing from the Emergency Director, Radiological AssessmentCoordinator, Environmental Survey / Sample Team Coordinator, or theChemistry and Radiation Protection Team Coordinator regarding:a. Monitoring and Sample Collection locationsb. Required monitoring datac. Anticipated levels of radiation and contamination en routed. Suggested routes (other than pre-selected routes)e. Required protective gearf. Exposure limits to be followed, if any.g. Reporting locations for survey results, samples, and data cheetsb. Wind Direction
5.1. 4 Obtain emergency vehicle keys from the maintenance office and ensure,the gas tank for vehicle is full. Establish radio communicationswith the TSC or EOF radio operator as directed per step 5.1.1.Downwind survey teams will utilize radio channel #4 (stack repeater)and will be identified by alphabetic designations (ie Downwind A,B,C,etc.)
6.
5.1.5 Proceed to the pre-selected locations outlined in Step 5.1.6 or themonitoring points . indicated in step 5.1.1 and perform thesurvey / sample measurements indicated or as directed. Follow thesampling instructions of step 5.1.7 and the following generalguidelines.
a. Surveys should always be made by at least two surveyors,b. *4 bile traveling to the survey sites, the survey meters should be
turned on in the vehicle and observed by the passenger.c. Any abnormal readings observed while on the way to the survey
site should be noted for possible followup investigation. Thisdata should be noted under the moving survey section of Figure1, "Inplant/ Downwind / Reentry Survey Data Sheet".
d. Make every effort to conduct surveys as near as possible to thedesignated points.NOTE: Ground level releases are expected to result in
maximum radioactive concentrations at or near the siteboundary. Elevated releases may result in producingmarimum radioactive concentrations at varying ;
dist=nces from the site boundary.e. At each survey point, gamma dose rate and/or air sample
measurements should be taken (see step 5.1.6 for further 6 i
instructions). Results of the measurements shall be transmitted 1
back to the TSC or EOF as indicated per step 5.1.1. If radio is i |f.inoperative, use coins available in kit to telephone results
back to location indicated in step 5.1.1. Telephone directory |1s available in the Emergency Survey Binder for references. r
f. At each survey location, determine the maximum area of
concentration by scanning to the left and right of the expectedsurvey area. At the area of highest dose rate commence airsampling and/or doserate survey. -
EPP-7 -4 June 1983
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5.1.5 (Cont.) (g. Once the *=H== concentration area is confirmed, the width off
C- the rezesse ,1ume- shou 1d de defined. This is dcne e7surveying areas at right angles to the direction of the wind;these areas will be specified by the Environmental Survey / Sample'Team Coordinator. If these "right angle" surveys show that the
* "=M== area" has shifted, new surveys should be made toredefine it. I
h. During the monitoring activities, maintain accurate records ofyour total accumulated exposure and relate this information backto the TSC or EOF as appropriate per the survey logs. Personnelexposure data must be related to the TSC or EOF with the surveyhu.,
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5.1.6 Survey Team Assignments
*a. Survey Team A
I) Survey Team A will be used to locate the plume centerlinebased on the current wind direction. This team shouldprocejd either east or west on Lake Road and perform8, O dose rate measurements at each pre-determinedsurvey sample location designated on Fig. 3.
2) If the wind is out of an easterly direction the team should.
proceed west on Laka acad and then north onto Lakeview road.3) If the wind is out of a westerly direction the team should
proceed east on Lake ' Road and then south on Rt. 29 for a
northwest wind or north onto Nine Mile Point Road for awest wind. 6
4) During transit from one survey / sample location to another,'
Survey Team A will perform moving vehicle surveys todetermine exact Jocation of plume centerline and transmitresults back to the' Environmental Survey / Sample TemaCoordinator.;.
5) As surveys are completed or once plume centerline has beenestablished, report location, results of surveys and
; personnel exposure data to the TSC or EOF as indicated in'
step 5.1.1. Request further instructions fromEnvironmental Survey / Sample Team Coordinator.-
b. Survey Team B !
1) Survey Team B will be used to assess the radiologicalconditions at the Nine Mile Point Unit 2 Construction Site ;and the Nine Mile Point Energy Information Center.
2) If the wind is out of a westerly direction, this teamshould proceed to the NMP Unit 2 Construction Site andperform the following:
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* Proceed to Unit II Safety Office (Next to Trainingi
Center, Fig. 3 Location 24) and coordinate monitoring ;
activities of Unit II site personnel with the SWEC )( Radiological Monitors. Ensure SWEC monitors are
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| appropriately dressed and dispatched to critical i'
assembly areas (see Figure 6)to perform personnelmonitoring. A SWEC Radio 1ogical Monitor equipped with
. a radio will assist the team in defining andL\ communicating with critical assembly areas.
5.1. 6 (Cont.) *Parforn 8, [ dose rate / airborne activity)Jessurments at the following Survey / Sample locations ,
. , "- See Fig. 5.
**
D-1, Fig. 3 (Outside SWEC Warehouse and*
Inside SWEC Warehouse)E-1, Fig 3 (Outside NMP-2 combined construction
- offices and Inside NMP-2 combined constructionoffices)G-1, Fig. 3 (Outside Unit 2 Training Center and
Inside Unit 2 Training Center). *As surveys are completed record results on Fig. 1 and
transmit results and personnel exposure datai to theEnvironmental Survey / Sample team coordinator. Requestfurther survey inattuctions if necessary.
3) If the wind direction is out of the east, proceed tothe Nine Mile Point Energy Information Center andperform the following:*Enroute to Information Center, perform a survey of
. the north and of contractor parking lot by Sewage'
Treatment Plant and the south and of contractorparking lot to determine if any activity has beendeposited on parked vehicles.* Proceed to Energy Information Center and initiatesurveys inside and outside Energy Information Center.
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* Proceed to Nine Mile point Unit II construction siteand perform actions as detailed in Step 5.1.6 - b. 2).*As surveys are completed record results on Fig.'l andtransmit results and personnel exposure data to the yEnvironmental Survey / sample Team Coordinator. Request . ./further survey instructions if necessary.
c. Survey Team C 6
1) Survey Team C will be used to monitor on-sitelocations initially, and then perform follote-up
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8, dose rate / airborne activity measurments oncethe plume centerline has been defined by Survey TesaA. Furthermore, Survey Team C may be used to collectsamples and data from affected downwind environmental -monitoting stations and energency T1D locations.Survey Team C will utilize the On-Call Chemistry andRadiation Management vehicle to perform this survey.
2) Survey Team C will perforn 8, y dose ratemeasurement (and if necessary airborne activity
measurements) as determined by the EnvironmentalSample Survey Team Coordinator at the following
locations:North of hRC Trailer-
Entrance to Switch Yard-
Security Gate ares-,
N.W. Corner of Reactor Bldg.-
West of Trailer ComplexNortheast fence of NMP-1-
3) As surveys are completed, record results on Fig. 1 andtransmit results and personnel exposure data to the !
Environmental Survey / Sample Team Coordinator. Request i,
further survdy instructions if necessary.EPP-7 -6 June 1983
i Two different readings (ground level and waist level) are takenat each survey point. These two readings should assist in the
i evaluation of whether the activity is coming from an overhead'
plume or a ground deposit. Reading will be taken after the airsample has been started at a given location, if an air sample is-
required.
Ground Level ReadingsGround level contact readings should be taken at three survey-
points within a circle of about 25 yards in diameter using a;. c)unt rate meter. Readings over 20,000 c/m should be taken with'
a dose rate meter. Record open window and closed windowreadings. Record and report only the highest of the threemeasurements.
Waist Level ReadingsWaist level readings (approximately 3 ft from the ground) shouldbe at each of the locations where a ground level reading is
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taken._ Readings over 20,000. c/m should be taken with a doserate meter. Record open window and close window readings.Record and report only the hi:; hest of the three measurements.
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b. Air Sample Measurements
Air samples should be obtained at the plume centerline and atk other locations, as specified' (ie plume edge). Other air
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samples should be collected for backup data after the primarysampling is completed.
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. Using a portable high volume air sampler (AC or DC depending onpower source) loaded with both particulate filter and iodinecollection cartridge, obtain a 5-20 minute sample (approximately
'15 cubic feet). Record flow rate and the time the sampler isstarted and stopped.NOTE: Silver Zeolite sampling cartridges shall be used until
it has been determined that noble gas interference ofair samples measurementa is not a problem.
Sample filters, cartridges and/or liquid samples shall be placedin separate containers (e.g. envelopes, plastic bags, etc.) toavoid cross contamination of samples and counting facilities.
After obtaining air samples, travel to an area of low background( <100 cpa) and run the high volume air saapier forapproximately 1 minute to clear inert gases from the cartridge.
fNOTE: If sample (s) have been taken on Silver Zeolite
Cartridge (s) the post sampling purge is not required.!
~. \" Obtain a background count and count the particulate filter and - [ jiodine cartridge separately. During counting hold the probe |approximately 1/2 to 3/4 inch from the cartridge or filter and l
count for a total time of 1 minute. Iag the =mv1=um count rates 1'
observed on the survey data sheet (Figure 1). Iodine samplecounts greater than 10,000 cpm should be returned for GeLianalysis expeditiously.
Return labeled air sample filters and cartridges to the site forGeLi analysis as. directed in Step 5.1.1. -
NOTE: Samples will be returned to either the NMPNS OSC,JAPNPP Environmental Laboratory, or the EOF dependingon wind direction and relative activity of samples.
. Return all Downwind Survey Data Sheets to the EnvironmentalSurvey / Sample Team Coordinator at either ' the EOF or TSC as'
directed per step 5.1.1.
c. Environmental Monitoring Stations
Samples from Environmental Monitoring Stations will be selectedon a priority basis by the Environmental Survey / Sample Team '
Coordinator in accordance with the guidance and procedurascontained in EPP-16.
d. Emergency / Environmental TLD's
Emergency / Environmental TLD collection and readout will be - l
directed by the Environmental Survey / Sample Team Coordinator in 6accordance with the guidacca and procedures contained in EPP-16.
e. Environmental Media Samples
Collection and analysis of other environmental media saapies!will be directed by the Environmental Survey / Sample Team
Coordinator in accordance with the guidance and procedures,
contained in EPP-16. ||
5.2 Environmental Survey / Sample Team Coordinator!
5.2.1 Request a briefing on the emergency and energency actions status from I
the Energency Director and/or the Radiological Assessment Coordinator. ,
.
5.2.2 Determine the need for additional equipment, supplies, and manpower! and make a request for same.
5.2.3 Based on the briefing supplied by the Emergency Director and/or,
Radiological Assessment Coordinator, contact the Chemistry and,
(q Radiation Protection Team Coordinator in the OSC (via dedicated>
''s telephone line, radio, gaitronics, etc.) and assign teams to performdownwind surveys and sampling.- Priorities for assignments will 6* depend on station conditions and should fonow the fonowing order:
a. Confirmation of initial off-site dose projections.(EPP-7)
b. Tracking plume by field measurments.(EPP-7)
c. Expanded environmental monitoring (EPP-16)..
d. Other missions as required.
5.2.4 Ensure monitoring team members ara notified of the fonowing:
a. monitoring and sample collection location (s)b. required monitoring data
- c. anticipated radiological conditionsd. required protective gear and dosimetrye. suggested routes (other than pre-selected routes)f. exposure limits to be fonowed, if anyg, reporting locations for survey results, samples, and data sheetsb. wind direction
,
5.2.5 Ensure that each group of team members on a given mission has tne~
fonowing, if applicable:
b. a. proper monitoring and communications equipmentb. copy of pertinent proceduresc. maps marked up to show monitoring / sample conection points, if,
necessary (see figures 3 & 4)d. any special equipment required to contain and/or transport.
sample (s)e. Proper dosimetry and protective gear
NOTE: Downwind survey teams will utilize radio channel #4 (stackrepeater) and will be identified by alphabetic designations(ie bownwind A,B,C, etc.)
6
5.2.6 Guidelines for field monitoring,
a. Upon discussion with the Radiological Assessment Coordinatorprovide recommended locations for initial and fonow-up fieldmonitoring to survey teams. These should be determined basedupon prevailing wind directions, and survey / sample locations,
,
i and/or roads in that direction. Furthermore, should effluent| monitor data not be readily available, establish what survey I
! location (s) will be used to determine chronological release rate '
b. Monitoring' should be performed over a three sector area '(e.g. -'
that is one 22 1/2" sector on each side of the affected sector)6-
until the puas centerline has been established off-site. -
NOTE:- During lake breeze conditions, it is possible for theplume to diverge from the prevailing costal winddirection once it meets the inland air mass.Therefore, during postulated lake breeze conditions(i.e. wind direction from north) it may be necessary
0to expand survey area to 45 on either side of theplume sector in order to define the inland directionof plume.
Advise survey teams whenever it appear's that the wind directionc.has shifted more than 22 1/2* during the monitoring period.
d. Direct, if necessary, survey teams to collect and replaceazisting emergency and environmental T1D's, beginning with theT1D's downwind of the plume.
e. Direct, if necessary, the- initiation of the expanded,
environmental monitoring program based on the release conditions(n.g. water for liquid releases, grass and milk samples for
6iodine releases).
5.2.7 As survey results are received via the survey Report Form (Fig. 2),calculate dose rates and airborne concentrations using Fig. 2 and
-
v)forward data to the Radiological Assessment Coordinator. Perform anevaluation of the following areas per each location.
. a. The whole body immersion dose rate will be due mainly to noblegases. This may best be estimated by the waist (3') dose ratereading directly in mR/hr.
b. Noble gas airborne . activity any be calculated using thefollowing formula: 6,
3Noble gas u C1/cc (or Ci/m ) =(3' mR/br) or 3' mR/br x 1.4 z'1g6(7.2 x 10') I
l' c. Particulate Activity Calculation
The particulate activity may be calculated by using thej. fallowing formula:
2) If counts observed minus background are significant (i.e.greater than MDC for the associated background value)calculate particulate activity as follows:
..
u Ci/cc (or Ci/m ) = (1.6 x 10 l.:.0.) x (c,,)3
ft.'
10-9NOTE: Any sample activities greater than 9 x(Co-60 MPC)should be recounted on a GaLi todetermine if activity was influenced by Radon
' daughter products.
3) If net counts per minute are less than MDC, calculate .
activity using MDC and report nuclide cencentration as lessthan the calculated value.
d. The Iodine-131 activity may be calculated by using the followingformula:{
61) Minimum detectable counts (MDC) a 4.66 Bkgd. (cpa)_. 333
. Bkad. (can) MDC60 6380 7290 77100. 81
, ,
2) If counts observed minus background are significant (i.e.greater than MDC .for the associated background value)calculate Iodine activity as follows:
3u C1/cc (or C1/m ) = (3.4 x 10 ,9.1 (com)ft'
sample activities greater than 9 xNOTE:Any'(I-131-MPC) should be recounted on a10- GeLi todetermine if activity was influenced by Radondaughter products.
3) If net counts per minute are less than MDC, calculate '
activity using MDC and report nuclide concentration as lessthan the calculated value.
4) In addition, the ratio of Iodine-131 concentration to gamma.exposure rate concentration should be approximatelyconstant for different locations if the measurements arenot spread out over more than about 2 hours and the releaserate has been fairly constant over the period. Therefore,the process of collecting and analyzing a few air samplesand estimating Iodine concentrations based on tne
Iodine-131 concentration to gamma exposure rate at' other: locations could be employed to save considerable monitoring
time.
I-131 Conc /r==== Exposure Rate Ratio:
i 3I-131/yratio (Ci/m /ar/hr)= Step 5.2.7d(2)I-131 Conc3' y Exposure Rate from
.
Downwind Survey
Estimated I-131 Cone (uCi/cc) =hratio x 3' mR/hr'I-/3/,
The Iodine to Noble Gas concentration ratio may be calculated bye.using the following formula: -
Iodine / Noble Gas Ratio = Iodine Activity 6
Noble Gas Activity
f. The general population (child) thyroid dose rate may be ./calculted using the following formula:
General Population (child) = Iodine Activity z 5 x 105.Dose Rate Rem /hr
g. Ground deposition may be calculated by using the followingferaula:
Ci/M2= (contact countrate~
3.' countrate meter reading in- .
cpa) x 2 x 10-9or
|(contact dossate 3' dose rate meter reading in !-
mrad /hr)x8 x 10-6 |:
5.2.8 Provide results of environmental surveys and calculations to the ,
Radiological Assessment Coordinator so a comparison can be made || between survey readings and dose projections. Identify whether plume| data are centerline values or edge of plume values. Ensure the '
,
! 1stter is also reflected on any data which is posted.|
5.2.9 If the emergency condition is expected to continue beyond the normalemployee work day or has continued for more than 6 hours, commence
i preparations for developing contingency plans for providing 24 hourI
. coverage for emergency field monitoring activities.