ML101540286

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Revision 10 to Emergency Plan Implementing Procedure IP-EP-310, Dose Assessment and Revision 5 to IP-EP-410, Protective Action Recommendations
ML101540286
Person / Time
Site: Indian Point  Entergy icon.png
Issue date: 05/26/2010
From: Glander L
Entergy Corp
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
IP-SMM-AD-103, Rev 0, FOIA/PA-2011-0181, FOIA/PA-2011-0262 IP-EP-310, Rev 10, IP-EP-340, Rev 0
Download: ML101540286 (35)
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O May 26, 2010 DISTRIBUTION CONTROL LIST Document Name: IPEC EMERGENCY PLAN CC# NAME DEPARTMENT LOCATION 2 CROULET, DON INSTRUC TECH TRNG (E-PLAN ONLY) 48-2-A

  • 9* IRAOLA, TONY FOR THE JIC EOF 10 SHIFT MANAGER OPERATIONS IP3 11 CONTROL ROOM OPERATIONS IP3 14 EOF E-PLAN (ALL EP'S) EOF 16 PEREZ, ROSE E-PLAN (ALL EP'S) WPO-12D 21 TSC (nP3) EEC BUILDING IP2 23 BARR, STEVE NRC (ALL EP'S) OFFSITE 24 BARR, STEVE NRC (ALL EP'S) OFFSITE 25 DOC CONTROL DESK NRC (ALL EP'S) OFFSITE
  • 26* DOC CONTROL DESK NRC (E-PLAN ONLY) OFFSITE
    • (FOR CONTROL COPY #26 - USE ATTENTION TO DIRECTOR OF SPENT FUEL FOR OFFSITE DISTRIBUTION)**

28 CULLINAN, P J A (PLAN ONLY) OFFSITE 30 E-PLAN STAFF E-PLAN (ALL EP'S) EOF 31 KRAUS, KEVIN (ALL) ST. EMERG. MGMT. OFFICE OFFSITE 32 DELBORGO, D (PLAN ONLY) DISASTER & EMERGENCY OFFSITE 33 LONGO N (PLAN ONLY) EMERGENCY SERVICES OFFSITE 34 GREEN D (PLAN ONLY) DISASTER & CIVIL DEFENSE OFFSITE 35 STIEBELING A (PLAN ONLY) OFF OF EMERG MANAGEMENT OFFSITE 41 GRANT, LEAH SIMULATOR (TRAINING) 48-2-A 319 GRANT,LEAH LRQ TRAINING 48-2-A 520 CONTROL ROOM OPERATONS IP2 521 CHIUSANO, J SIMULATOR (TRAINING) IP2 CC/STMP NRC RESIDENT INSPECTOR US NRC (88' ELEVATION) IP2

  • 9* GETS: E-PLAN, IP- EP-115 (FORMS), IP-EP-260(JOINT CENTER INFORMATION)

IPEC SITE QUALITY RELATED IP-SMM-AD-103 Revision 0

-EitergyMANAGEMENT ADMINISTRATIVE PROCEDURE MANUAL INFORMATIONAL USE Page 13 of 21, ATTACHMENT 10.1 SMM CONTROLLED DOCUMENT TRANSMITTAL FORM SITE MANAGEMENT MANUAL CONTROLLED DOCUMENT TRANSMITTAL FORM - PROCEDURES Page 1 of 1 Enteroy CONTROLLED DOCUMENT TRANSMITTAL FORM - PROCEDURES IPEC, P.O. Box 308, Buchanan, NY 10511 TO: DISTRIBUTION DATE: 5/26/10 TRANSMITTAL NO:

(Circle one)

FROM: IPEC DOCUMENT CONTROL: EEC or IP2 53'EL PHONE NUMBER: (914) 271-7054 The Document(s) identified below are forwarded for use. In accordance with IP-SMM-AD-103, please review to verify receipt, incorporate the document(s) into your controlled document file, properly disposition superseded, void, or inactive document(s). Sign and return the receipt acknowledgement below within fifteen (15) working days.

AFFECTED DOCUMENT: IPEC EMERGENCY PLAN DOC # REV # TITLE INSTRUCTIONS THE FOLLOWING PROCEDURE HAS BEEN REVISED, PLEASE REMOVE YOUR CURRENT COPY AND REPLACE WITH ATTACHED REVISIED PROCEDURE:

IP-EP-310 REV.10 IP-EP-340 REV.0

                      • PLEASE NOTE EFFECTIVE DATE***********

RECEIPT OF THE ABOVE LISTED DOCUMENT(S) IS HEREBY ACKNOWLEDGED. I CERTIFY THAT ALL SUPERSEDED, VOID, OR INACTIVE COPIES OF THE ABOVE LISTED DOCUMENT(S) IN MY POSSESSION HAVE BEEN REMOVED FROM USE AND ALL UPDATES HAVE BEEN PERFORMED IN ACCORDANCE WITH EFFECTIVE DATE(S) (IF APPLICABLE) AS SHOWN ON THE DO*T NAME (PRINT) SIGNATURE DATE CC#

CONTROLLED IPEC NON-QUALITY RELATED IP-EP-410 Revision 5 i y" EMERGENCY PLAN PROCEDURE IMPLEMENTING I....

PROCEDURES REFERENCE USE Page 1 of 10 Protective Action Recommendations Prepared by: Lori Glander ~.jji, <- 'a e tcI /

I-'rln Name

~

Approval: Brian Sullivan P'rint Name Effective Date: May 27, 2010 IP-EP-410(PAR) R5.doc

IPEC NON-QUALITY RELATED IP-EP-410 Revision 5

'1'1t4Y. EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 2 of 10 Table of Contents 1 .0 P U R P O S E ............................................. ............................................................................... 3 2 .0 R E F E R E N C E S ....... ............... ........ ....... ......... .... ..... .............................................. 3 3 .0 D E FIN IT IO N S ........................................... .................. .......... . ................................ 3 4 .0 R E S PO N S IB IL IT IE S ..................... .......... .......... ................................................................. 3 5 .0 D ET A ILS ......................... ............................................................................................... 3 5.1 NUE, ALERT, SITE AREA EMERGENCY ................ . .................................... 3 5.2 G ENERAL EMERGENCY ......................................... .................................................... 3 6 .0 IN T E R F A C E S ................................ ............................. ............................................................ 4 7.0 RECORDS .................. .................................................. 4 8.0 REQUIREMENTS AND COMMITMENT CROSS-REFERENCE ...................................... 4 9.0 ATTAC H M ENTS ..... ............ .............................................................................. 4 9.1 FLOWCHART FOR GENERAL EMERGENCY PROTECTIVE ACTION DECISIONS .................. 5 9.2 STABILITY CATEGORY - DOWNWIND KEYHOLE SECTOR CORRELATION TABLE ................ 6 9.3 EPA PROTECTIVE ACTION GUIDELINES ............................................................................... 7 9.4 OVERLAY SELECTION FLOWCHART ............................................................................... 8 9.5 BASIS FOR SECTOR SELECTION IN PAR DETERMINATION ......................................... 9 9.6 OVERLAY STABILITY CATEGORY- DOWNWIND KEYHOLE SECTOR CORRELATION TABLE.. 10

IPEC NON-QUALITY RELATED IP-EP-410 Revision 5 i*#ide-y* EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 3 of 10 PROTECTIVE ACTION RECOMMENDATIONS 1.0 PURPOSE To prescribe the responsibilities and methods for determining recommended protective actions for New York state and County authorities.

2.0 REFERENCES

EPA Protective Action Guidelines 3.0 DEFINITIONS Protective Action Recommendations (PARs) - Specific recommendations made by the Emergency Director to the local authorities in accordance with Emergency Plan procedures based on Protection Action Guidelines.

4.0 RESPONSIBILITIES 4.1 The Shift Manager is responsible for evaluating accident conditions, classifying the accident, and recommending protective actions to offsite authorities during the initial phases of the accident. The Emergency Director assumes these responsibilities when he takes control of the emergency response from the Shift Manager. The Offsite Radiological Manager will assist the Emergency Director with protective action recommendations.

4.2 The decision to initiate any protective actions is solely the responsibility of the local authorities.

5.0 DETAILS 5.1 NUE, Alert, Site Area Emerqency Recommend no protective actions be taken.

5.2 General EmerQencv 5.2.1 The initial protective action recommendation should be made within 15 minutes of the GENERAL EMERGENCY declaration.

5.2.2 Protective Action Recommendations (PARs) shall be made in accordance with Attachment 9.1. Downwind Sectors are identified on Attachment 9.2.

5.2.3 Downwind sectors in Attachment 9.2 are determined using MIDAS wind fields. If MIDAS is unavailable, the isopleth overlays may be used as backup (Attachment 9.6. Use Attachment 9.4 to support isopleth selection) NOTE: Due to the wind field origin change between MIDAS and MEANS there is a difference in the down-valley plume shape.

When using the overlays as a substitute for MIDAS, down-valley PARs may be different by one sector.

IPEC NON-QUALITY RELATED IP-EP-410 Revision 5 En-y iY EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 4 of 10 5.2.4 The initial PAR shall be made in the first GENERAL EMERGENCY notification to the State/Counties. All subsequent, Part I notifications shall include the latest PAR.

5.2.5 Re-evaluate the PARs based on the following:

" Changes in Wind Direction or Speed

" Dose Assessment - (When release duration is NOT able to be estimated, use four hours as a default value),

" Field Data

" EPA PAGs - Attachment 9.3, 5.2.55.2.6 As protective action recommendations change, ensure appropriate steps are taken to protect the onsite population.

5.2.65.2.7 IF dose projections indicate a EPA PAG will be exceeded beyond 10 miles THEN send field teams to confirm projections and discuss possible protective actions with offsite officials if projections prove possible.

6.0 INTERFACES 6.1 Evacuation Travel Time Estimates 6.2 IP-EP-310, Dose Assessment 6.3 State of New York KI Policy Paper 7.0 RECORDS NONE 8.0 REQUIREMENTS AND COMMITMENT CROSS-REFERENCE NONE 9.0 ATTACHMENTS 9.1 Flowchart for General Emergency Protective Action Decisions 9.2 Stability Category - Downwind Keyhole Sector Correlation Table 9.3 EPA Protective Action Guidelines 9.4 Overlay Selection Flow Chart 9.5 Basis for Sector Selection in PAR Determination 9,6 Overlay Stability Category-Downwind Keyhole Sector Correlation Table

IPEC NON-QUALITY RELATED IP-EP-410 Revision 5 kideo/ro EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 5 of 10 Attachment 9.1 FLOWCHART FOR GENERAL EMERGENCY PROTECTIVE ACTION DECISIONS Sheet 1 of 1 General Emergency I

Declared A radiologicl release is underway or anticipated I Recommend EVACUATION and implementation of the KI (within 15 min) which is of Plan for 2 Mile Radius and 2-5 Miles Downwind Sectors and short duration (<1 hr) advise rema inuer or r-1-4 population to go inaoors and I I U ~

I U

listen to EAS. (Attachment 9.2)

UI ,,,_ ýNO ý Continue Assessment based on:

  • Wind Speed / Direction
  • Dose Assessment YES
  • Field Data I
  • EPA PAGs '1 SHELTER the 2 mile radius and 2 - 5 miles downwind Sectors and advise remainder of EPZ population to go indoors and listen to EAS exceeded (>1RemTED orNO beyond mle radius?

0 YES Recommend EVACUATION and implementation of the KI Plan for5 Mile Radius and 5-10 Miles Downwind Sectors (see notes) and advise remainder of EPZ population to go indoors and listen to Notes:

EAS. (Attachment 9.2) (1) Refer to Attachment 9.3 for I IU details on EPA PAGs.

(2) IF an EPA PAG is exceeded or expected to be exceeded beyond 10 miles THEN Are EPA PAGs consider the need for PARs

(>1Rem TEDE or NO beyond 10 miles and discuss 5 Rem CDE Thyroid) possible actions with State.

exceeded beyond (3) IF recommended Sectors a 5 mile radiusl change THEN add new Sectors to new PAR. DO NOT subtract any Sector in YES which actions have previously been Recommend EVACUATION and implementation of the I KI Plan for entire 10 mile radius recommended.

I

IPEC NON-QUALITY RELATED IP-EP-41 0 Revision 5 E'Wey*, EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 6 of 10 Attachment 9.2 Stability Category - Downwind Keyhole Sector Correlation Table Sheet 1 of 1 TABLE I - MIDAS Up-Valley Plumes Up-Valley Plumes (wind speed. < 4 m/sec and wind direction from 1020-209°)

Pasquil Stability Categories Sectors affected A, B 16, 1. 2,, 3, 44 C, D, E2 F, G 16,112,3 TABLE II - MIDAS Down-Valley Plumes Down-Valley Plumes (wind speed < 4 m/sec and wind direction from 3490-1010)

Pasquill Stability Categories Sectors affected A,B 7,8,9,10,11 C, D, E, F,G 7,8,9,10 TABLE III - MIDAS Cross-Valley Plumes Cross-Valley (wind speed > 4 m/sec OR wind direction from 2100-3480)

Wind Direct Center Pasquii Stability Categories A & B Pasquil Stability Categories C-G From (deg) Sector No Sectors affected Sectors affected 169-190 1N 15,16,1, 2,3 16,1,2 191-213 2NNE 16,1,2,3,4 1,2,3 214-235 3NE 1,2,3,4.5 2, 3, 4 236-258 4ENE 2,3,4, 5,6 3,4,5 259-280 5E 3,4,5,6.7 4,5,6 281-303 6ESE 4,5,6,7,8 5,6.7 304-325 7SE 5,6,7,8,9 6,7,8 326-348 8SSE 6,7,8,9,10 .7,8.9 349-010 9S 7,8,9,10,11 8,9,10 011-033 10SSW 8,9,10,11,12 19,10i11 034-055 11SW 9,10,11, 12,13 10,11,12 056-078 12WSW 10,11. 12,13,14 11,12,13 079-100 13W 11, 12, 13, 14, 15 12, 13f 14 101-123 14 WNW 12, 13, 14, 15, 16 13. 14, 15 13 124-145 15NW t 14 15,16, 1 14, 15, 16 146-168 16 NNW 14, 15. 16, 1.2 15, 16.1

IPEC NON-QUALITY RELATED IP-EP-410 Revision 5 Lldergy EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 7 of 10 Attachment 9.3 EPA PROTECTIVE ACTION GUIDELINES Sheet I of 1 Recommended protective actions to reduce whole body and thyroid dose from exposure to a gaseous plume.

PROJECTED DOSE (REM)

TO THE POPULATION RECOMMENDED ACTIONS (a) COMMENTS Whole Body (TEDE) <1 No planned actions. (b) Previously recommended State may issue an advisory to protective actions may be Thyroid (CDE) <5 seek shelter and await further reconsidered or terminated.

instructions.

Monitor environmental radiation levels Whole Body (TEDE) >1 Evacuate unless constraints make it If constraints exist, special impractical; then shelter. Monitor consideration should be given environmental radiation levels, for evacuation of children and Thyroid (CDE) >5 Control access. pregnant women.

GUIDANCE ON DOSE LIMITS FOR WORKERS PERFORMING EMERGENCY SERVICES (REM)

Whole Body (TEDE):

10 Protecting valuable property Lower dose not practicable.

25 Lifesaving or protection of large populations Lower dose not practicable.

> 25 Lifesaving or protection of large population Only on a voluntary basis to persons fully aware of the risks involved.

TEDE- Total Effective Dose Equivalent: Sum of external effective dose equivalent and committed effective dose equivalent to nonpregnant adults from exposure and intake during an emergency situation. Workers performing services during emergencies should limit dose to the lens of the eye to three times the listed value and doses to any organ (including skin and body extremities) to ten times the listed value.

CDE- Committed dose equivalent (to the Thyroid).

(a) These actions are recommended for planning purposes. Protective action decisions at the time of the incident must take existing conditions into consideration.

(b) At the time of the incident, officials may implement low-impact protective actions in keeping with the principle of maintaining radiation exposures as low as reasonably achievable (ALARA)

IPEC NON-QUALITY RELATED IP-EP-410 Revision 5 ille . EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 8 of 10 Attachment 9.4 (WVFRI AY 5*FI ECTION FLOW CHART( MEANS and HAND CALC)

Sheet 1 of 1 OBTAIN METEOROLOGICAL DATA I

RECORD WIND DIRECTION I

RECORD WIND SPEED RECORD PASQUILL STABILITY CLASS I

WIND SPEED < 4 m/s WIND SPEED > 4 mls I. I WIND DIRECTION 0

340 - 101 0

[ WIND DIRECTION 102 o 209o ] WIND DIRECTION 2100 . 339° USE DOWN VALLEY USE UP VALLEY OVERLAY USE CROSS VALLEY OVERLAY GROUND OR GROUND OR ELEV. OVERLAY GROUND OR ELEV. (Yellow) ELEV.

(Blue) (Red)

PLACE OVERLAY OVER PLANT ORIENTATION POINT ALIGN OVERLAY ALONG WIND DIRECTION I

'Plant Orientation Point a, Using down valley overlay (Blue) align horizontal axis on 901 - 2700 line with plume extending south.

b. Using up valley overlay (Yellow) align horizontal axis on 900 - 2700 line with plume extending north.

IPEC NON-QUALITY RELATED IP-EP-410 Revision 5 EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 9 of 10 Attachment 9.5 Basis for Sector Selection in PAR Determination Sheet I of 1 The Sectors provided in the Protective Action Recommendations (PARs) in this procedure are based on the following determinations:

When the conditions support Up-Valley Plumes (wind speed < 4 m/sec and wind direction from 1020-209°) and either Pasquil Category A or B is in effect, the MIDAS display and appropriate overlay were viewed on the map and the affected Sectors were determined (Affected Sectors are any Sector that the Isopleth Lines touch beyond 2 miles). This was determined to be Sectors 16, 1, 2, 3 and 4.

When the conditions support Up-Valley Plumes (wind speed < 4 m/sec and wind direction from 1021-2090) and either Pasquil Category C, D, E, F or G is in effect, the MIDAS display and appropriate overlay were placed on the map and the affected Sectors were determined.

(Affected Sectors are any Sector that the Isopleth Lines touch beyond 2 miles). This was determined to be Sectors 16, 1, 2 and 3.

When the conditions support Down-Valley Plumes (wind speed. < 4 m/sec and wind direction from (349-101 for MIDAS and 3400-1010 for overlay) and either Pasquil Category A or B is in effect, the appropriate overlay was placed on the map and the affected Sectors were determined. (Affected Sectors are any Sector that the Isopleth Lines touch beyond 2 miles).

This was determined to be Sectors 7, 8, 9, 10 and 11.

When the conditions support Down-Valley Plumes (wind speed.< 4 m/sec and wind direction from 349-101 for MIDAS and 3400-1010 for overlay) and either Pasquil Category C, D, E, F or G is in effect, the appropriate MIDAS display or overlay was placed on the map and the affected Sectors were determined. (Affected Sectors are any Sector that the Isopleth Lines touch beyond 2 miles). This was determined to be Sectors 7, 8, 9 and 10.

When the conditions support Cross-Valley Plumes (wind speed.> 4 m/sec OR wind direction from 2100-348 for MIDAS and 210-3390 for overlay) and either Pasquil Category A or B is in effect, the appropriate MIDAS display or overlay was placed on the map and the affected Sectors were determined. (Affected Sectors are any Sector that the Isopleth Lines touch beyond 2 miles). This was determined to be the Sector in which the Plume Centerline lays and 2 Sectors on either side of the centerline Sector.

When the conditions support Cross-Valley Plumes (wind speed. > 4 m/sec OR wind direction from 210°-348 for MIDAS and 210 - 339 for overlay) and either Pasquil Category C, D, E, F and G is in effect, the appropriate overlay was placed on the map and the affected Sectors were determined. (Affected Sectors are any Sector that the Isopleth Lines touch beyond 2 miles). This was determined to be the Sector in which the Plume Centerline lays and 1 Sector on either side of the centerline Sector.

IPEC NON-QUALITY RELATED IP-EP-410 Revision 5 nldery,k EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 10 of 10 Attachment 9.6 For Use as Backup ONLY Overlay Stability Category - Downwind Keyhole Sector Correlation Table Sheet 1 of 1 TABLE I - OVERLAY/MEANS Up-Valley Plumes Up-Valley Plumes (wind speed, < 4 m/sec and wind direction from 1020-209°)

Pasquil Stability Categories Sectors affected A, B 16, 1, 2, 3, 44 C,D, E, F,G 16,1,2,3 TABLE II - OVERLAY/MEANS Down-Valley Plumes Down-Valley Plumes (wind speed < 4 m/sec and wind direction from 340°-101°)

Pasquill Stability Categories Sectors affected A,B 7,8,9, 10, 11 C, D, E, F,G 7G8,9,10 TABLE III - OVERLAY/MEANS Cross-Valley Plumes Cross-Valley (wind speed > 4 m/sec OR wind direction from 2100-3390)

Wind Direct Center Pasquil Stability Categories A & B Pasquil Stability Categories C-G From (deg) Sector No Sectors affected Sectors affected 169-190 I N 15,16,1, 2.3 16.1,2 191 -213 2NNE 16,1. 2,3,4 1,2,3 214-235 3NE 1, 2, 3, 4, 5 2,3,4 236-258 4ENE 2, 3, 4, 5, 6 3,4,5 259-280 5E 3, 4, 5, 6, 7 4,5,6 281 -303 6 ESE 4, 5, 6, 7 8 5.6,7 304- 325 7SE 5,6,7,8,9 6,7,8 326-348 SSE 6,7,8,9,10 7. 8, 9 349-010 9S 7, 8, 9,10, 11 8,9,10 011-033 10SSW 8, 9, 10, 11, 12 9, 10, 11 034-055 11 SW 9, 10.11, 12, 13 10.11, 12 0I56-078 12WSW 10,11,12,13,14 11,12,13 079-100 13W 11 12,13.14,15 12.13,14 101-123 14 WNW 12, 13,14, 15, 16 13, 14, 15 124-145 , 15 NW 13,14:15,16,1 114.15,16 146-168 [16 NNW 14115,16,1, 2 15, 16, 1

t--,-uNTROLLED

/;;% 0%

IPEC NON-QUAUTY RELATED IP-EP-310 Revision 10

'*"~'t*W EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 1 of 23 Dose Assessment Prepared by: Lori Glander ri111 i'1a1Ji Approval: Brian Sullivan cate vrint Name Effective Date: May 27, 2010 IP-EP-310 (Dose) R 10. doc

IPEC NON-QUALITY RELATED IP-EP-310 Revision 10 EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 2 of 23 Table of Contents 1 .0 P UR P O S E .................................................................................................................................. 3 2.0 R E FER E N C ES .................................. .............. .... ......................................................... 3 3.0 DEFINITIONS ............................................................. 3 4.0 R ESPO N SIB ILIT IES ................................................................................................. ................. 4 5.0 DET A ILS .................................. ........................................................................................ . . 4 6 .0 IN T E R FA C E S ............................................................................................................................ 11 7 .0 R E CO R D S ................ ................................................................................................................. 11 8.0 REQUIREMENTS AND COMMITMENT CROSS-REFERENCE .......................... 11 9.0 ATTACHMENTS .............................................................................................. 11 9.1 SITE BOUNDARY X./Q BY PASQUILL STABILITY CATEGORY ..................... 11 9.2 Xp/Q VALUES FOR OTHER DISTANCES. .............................. .. 13 9.3 REUTER-STOKES LOCATION Xp.Q VALUES ............................................. 14 9.4 ACCIDENT MONITORING OF NOBLE GAS CONCENTRATION IN THE PLANT V E N T ..................................................................................... .......... . . 15 9.5 DETERMINATION OF NOBLE GAS RELEASE RATE .................................. 17 9.6 DETERMINATION RATIO OF CDE-THYROID TO GAMMA DOSE RATES ........... 19 9.7 USE OF CHEMISTRY SAMPLE TO DETERMINE RADIOIODINE RELEASE RATE &

THYROID DOSE CONVERSION FACTOR .................................................. 21

IPEC NON-QUALITY RELATED IP-EP-310 Revision 10 EMERGENCY PLAN PROCEDURE IMPLEMENTING .

PROCEDURES REFERENCE USE Page 3 of 23 1.0 PURPOSE To describe the methods of estimating the whole body and thyroid dose the offsite population in the event of an accidental release of radioactivity to the environment. This manual method of calculation is provided in case the computer method is unavailable.

2.0 REFERENCES

2.1 IP-EP-330, Airborne Sample Analysis 2.2 IP-EP-340, Meteorological Information and Dose Assessment System (MIDAS) 2.3 IP-EP-510, Obtaining Meteorological, Radiological and Dose Assessment Data from MRP-DAS 2.4 IP-2 Manual Determination of Release Rate (IP-EP-1 15 Form EP-1 7) 2.5 IP-3 Manual Determination of Release Rate (IP-EP-1 15 Form EP-18) 2.6 IPEC Manual Dose Assessment Worksheet/TEDE Whole Body Exposure Calculations and Thyroid Exposure Calculations (IP-EP-1 15 Form EP-13) 2.7 IPEC Manual Dose Assessment Worksheet/Release Rate Back-Calculated from Field Reading (IP-EP-115 Form EP-19) 2.8 Estimating Containment Activity via R-25 / 26 (IP-EP-1 15 Form EP-1 1) 3.0 DEFINITIONS 3.1 Meteorological Information and Data Acquisition System (MIDAS) - the computer system that collects radiation monitor data, meteorological data, and calculates/displays offsite radiation doses in an emergency or in an exercise.

3.2 Meteorological, Radiological, and Plant Parameter Data Acquisition System (MRP- DAS) - the system which provides meteorological, Reuter Stokes and certain plant parameter data (VC Temperature, VC Pressure, Plant Vent and VC High Radiation Monitors) 3.3 Total Effective Dose Equivalent (TEDE) - The sum of the Deep Dose Equivalent (DDE) and the Committed Effective Dose Equivalent (CEDE).

3.4 Committed Effective Dose Equivalent - The sum of the products of the weighting factors applicable to each of the body organs or tissues that

@ IPEC NON-QUALITY RELATED IP-EP-310 Revision 10 EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 4 of 23 are irradiated and the committed dose equivalent to these organs or tissues.

3.5 Committed Dose Equivalent-Thyroid (CDE-Thy) - The committed dose from an intake of radioactive material to a body organ (i.e., thyroid).

3.6 Site Boundary - For Dose Assessment and Protective Action Recommendation purposes the Site Boundary is the closest distance at which members of the public would be exposed to a radioactive release. When the plume is traveling toward the water, the distance to the nearest point on opposite side of Hudson River will be considered as the Site Boundary.

4.0 RESPONSIBILITIES Dose Assessment staff in the Control Room (CR) and in the Emergency Operations Facility (EOF) are responsible for assessing actual and potential radioactive releases to the environment in an emergency or in an emergency preparedness exercise.

5.0 DETAILS 5.1 Use of Meteorological Information and Dose Assessment System (MIDAS):

Refer to procedure IP-EP-340, "Meteorological Information and Dose Assessment System (MIDAS)" for guidance on performing dose assessments using computer program.

5.2 Use of Meteorological, Radiological & Plant Data Acquisition System (MRP-DAS):

Refer to IP-EP-510, "Meteorological, Radiological & Plant Data Acquisition System".

5.3 Use of Modular Emergency Assessment and Notification System (MEANS):

Refer to procedure IP-EP-520, "Modular Emergency Assessment and Notification System (MEANS)" for guidance on performing dose assessments. The MEANS program should be used only as a backup computer program when MIDAS is not available.

AfNOTE All forms specified in Section 5.0 are provided in procedure IP-EP-1 15.

  • J~llvgy.* IPEC NON-QUALITY RELATED IP-EP-310 Revision 10 EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 5 of 23 5.4 Upon activation of the IPEC ERO and the IPEC Plant Conditions require, perform dose assessment. When performing the Dose Assessment function, use MIDAS (EP IP 340) as the primary method. MEANS (EP IP 520) is to be used only as a backup to MIDAS.

If there is no access to a dose assessment software program, dose assessment is to be completed using Hand Calculations (Section 5.6).

5.5 Necessary information to perform Dose Assessment is available using MRP-DAS( IP EP 510).

5.6 Hand calculations for dose assessment are to be performed if the necessary dose assessment software is not available. Perform hand calculations as follows:

5.6.1 Obtain the proper release rate calculation form (Form EP-1 7 for Unit 2 and Form EP-18 for Unit 3).

5.6.2 Determine radioactive release concentration or rate (pICi/cc, piCi/sec, OR CPM) and enter onto the appropriate Release Rate calculation form (Form EP-17 for Unit 2 or Form EP-18 for Unit 3):

Values determined from installed radiation monitors OR via a Chemistry sample may be entered directly into the Release Rate calculation form.. lF.a:-Chemistry sample is available, THEN use Attachment 9.7 to calculate the radioiodine release rate.

a. IF the plant vent survey is to be used THEN:
1. Follow guidance provided in Attachment 9.4, Accident Monitoring of Noble Gas Concentration in the Plant Vent.
2. Convert contact field reading on the plant vent to pCi/cc using conversion factor for appropriate time after shutdown, obtained from the appropriate Release Rate calculation form (Form EP-17 for Unit 2 and Form EP-18 for Unit 3).
b. IF back-calculating the Noble Gas release rate (NGRR) from field readings, THEN use Form EP-1 9.
c. IF using R-25 or R-26 to calculate the Noble Gas release rate (NGRR), THEN use Form EP-1 1.
d. IF back-calculating the release rate from airborne samples, THEN refer to IP-EP-330, Airborne Sample Analysis, and Attachment 9.5.

IPEC NON-GUALITY RELATED IP-EP-310 Revision 10 EI2dergy EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 6 of 23 5.6.3 If Noble Gas concentrations (pCi/cc) are entered in the Release Rate calculation form (Form EP-17 for Unit 2 or EP-18 for Unit 3), use the proper equation(s) on the appropriate section of the Release Rate calculation form to calculate the noble gas release rate (NGRR).

5.6.4 Calculate the radioiodine release rate (Ci/sec) using the default equation (with the assumed NG/I ratio for the release point) on the appropriate Release Rate calculation form (Form EP-1 7 for Unit 2 and EP-1 8 for Unit 3).

IF a chem. sample is available, THEN use Attachment 9.7 to:

e. Calculate the radioiodine release rate, and
f. Determine the sample-specific thyroid dose conversion factor.

5.6.5 Obtain the appropriate Xp/Qs from Attachment 9.1 or 9.2.

Record these values on the IPEC Manual Dose Assessment Worksheet (Form EP-13).

5.6.6 Obtain meteorological data in accordance with IP-EP-510.

5.6.7 Enter the release rates (RR), wind speed (WS) AND appropriate constants on the IPEC Manual Dose Assessment Worksheet (Form EP-13).

Determine the TEDE (Whole Body) AND CDE-Thyroid dose rates at the site boundary, 2, 5, AND 10 mile distances. (Form EP-13)

NOTE Use four (4) hours as the default release duration, unless information exists that clearly supports a different release duration.

5.6.8 Determine exposure rates if desired, at other distances utilizing the Xp/Q values from Attachment 9.2.

5.6.9 Due to required Protective Action Recommendations (Procedure IP-EP-410, Attachment 9.1), IF the projected or actual doses at any offsite location exceed the following:

a. 1 Rem Integrated Dose TEDE, or
b. 5 Rem Integrated Dose CDE-thyroid

EIPEC NON-UAUTY RELATED IP-EP-310 Revision 10 EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 7 of 23 THEN:

e If in the CR, inform the Shift Manager (SM) or Emergency Plant Manager (EPM).

5.6.10 Determine if there is a plant release above Federal Limits based on the following table:

Tech Spec Release Release Point Rad Monitor Te Secpelas Rate Setpoint Plant Vent R-27 1.4E+5 uCi/sec (or 20 uCi/sec Iodine)

Plant Vent R-44 (U2) / R-14 (U3) 3.3 E-3 uCi/cc P/S leak> 15 gpd and SG Safety or Main Steam Line Steam line activity > .01 Atmospheric Monitors uCi/cc with Atmospheric at 1 10% open or greater Hole in the VC R-25 / R-26 1 R/hr 5.6.11 IF there is a radioactive release, THEN contact Environmental Personnel as time permits to determine if it is above the Reportable Quantities set forth in 40 CFR302, Appendix B. If so, ensure the reportability requirements specified in IP-SMM-LI-108 are met within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

5.6.12 IF there is a radioactive release to the environment above Federal limits (per the above table), THEN complete Parts I & Ii of New York Radiological Data Form (Forms EP-1 and EP-2).

These forms can be filled in by hand or refer to procedure IP-EP-340, "Meteorological Information and Dose Assessment System" to have MIDAS automatically print out these forms.

O /tle-* IPEC EMERGENCY PLAN NON-QuALrry RELATED PROCEDURE IP-EP-310 Revision 10 IMPLEMENTING .

PROCEDURES REFERENCE USE Page 8 of 23 5.6.13 "New York State Radiological Data Form, Part I" (Form EP-1),

shall be transmitted:

- Within 15 minutes of the declaration of an emergency,

- Within 15 minutes of a significant change in plant status or emergency classification change.

- With updates approximately every 30 minutes; time interval may be lengthened with concurrence of offsite agencies.

5.6.14 "New York State Radiological Data Form Part II, Radiological Assessment Data" (Form EP-2) shall be completed and transmitted:

- As soon as possible after it has been determined that a release above Federal Limits exists.

- If there is a significant change in the radioactive release

- With updates approximately every 30 minutes; time interval may be lengthened with concurrence of offsite agencies.

5.6.15 To help visualize plume location, MIDAS plume data can be displayed directly from the MIDAS program or a shape file can be exported to a Geographical Information System display map.

a. IF Speed < 4 m/s AND Direction between 3490 - 1010 THEN:The plume will follow a down-valley path.
b. IF Speed < 4 m/s AND Direction between 1020 - 2090 THEN:

The plume will follow an up-valley path.

c. IF speed _>4 m/s OR direction between 2100 - 348' THEN:

The plume will follow a cross valley (normal) path.

5.6.16 IF a General Emergency has been declared, THEN use IP-EP-410 "Protective Action Recommendations" to determine what protective action recommendations should be conveyed to the EPM/ED.

5.6.17 When using MEANS as a backup dose assessment tool:

To help visualize plume location, determine the proper plume dispersion overlay:

a. IF Speed < 4 m/s AND Direction between 340' - 101' THEN:
1. Use BLUE down valley overlays.
2. CENTER overlay on plant and ALIGN N - S and E - W lines with those on map.

OE IPEC NON-QUALITY RELATED IP-EP-310 Revision 10 l~ery EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 9 of 23

b. IF Speed < 4 m/s AND Direction between 1020 - 2090 THEN:
1. Use YELLOW up valley overlays.
2. CENTER overlay on plant and ALIGN N - S and E -- W lines with those on map.
c. IF speed _>4 m/s OR direction between 210' - 3390 THEN:
1. Use RED cross valley overlays.
2. CENTER overlay and point plume along wind direction 5.7 In the EOF only:

5.7.1 Calculate projected doses using MIDAS, MEANS or manual methods.

5.7.2 If available, verify projected doses with actual field radiological data.

5.7.3 At the earliest time when offsite radioiodine concentration is available, calculate the ratio of CDE-thyroid dose rate to gamma dose rate using Attachment 9.6. Report this ratio to the stakeholders on the Part II Form, Field Measurement Section.

a. Obtain gamma reading in the plume (mrem/hr)
b. Obtain iodine concentration in the plume (uCi/cc)
c. Convert iodine concentration to CDE-thyroid dose rate (mrem/hr = mrem committed thyroid dose per hr breathed).
d. Calculate the ratio of CDE-thyroid dose rate to gamma dose rate.
1. IF the ratio is 5.0 or higher, THEN thyroid dose rates will be more limiting than whole body dose rates. Evaluate protective actions for possible changes.
2. IF the ratio is less than 5.0, THEN whole body dose rates will be more limiting than thyroid dose rates. Evaluate protective actions for possible changes.

5.7.4 IF offsite gamma dose rates are available, THEN verify release rates determined from plant data using the "IPEC Manual Dose Assessment Worksheet, Back Calculating Release Rate from Field Data" (IP-EP-! 15 Form EP-19).

5.7.5 Review Site Perimeter surveys.

5.7.6 Review Field Surveys.

IPEC NON-QUALITY RELATED IP-EP-310 Revision 10 EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 10 of 2_33 i ..... ..... i i m_ _ J 5.7.7 Review current and historical Reuter Stokes data, to determine if a release has occurred or is occurring. Attachment 9.3, "Reuter-Stokes Location Xp/Q Values" provides Xp/Q values for comparison purposes.

5.7.8 Exchange offsite monitoring and projected data with State and Counties.

5.7.9 If required, estimate release rates utilizing High Range Vapor Containment radiation monitors R-25/26 (IP-EP-1 15 Form EP-11).

O&IMyl*?y*IPECEMERGENCY PLAN NON-QUALITY RELATED PROCEDURE IP-EP-310 Revision 10 IMPLEMENTING ,

PROCEDURES REFERENCE USe Page 11 of 23 6.0 INTERFACES 6.1 IP-EP-410, Protective Action Recommendations 6.2 IP-EP-340, Meteorological Information and Dose Assessment System (MIDAS) 6.3 IP-EP-520, Modular Emergency Assessment & Notification System (MEANS) 6.4 IP-EP-510, Obtaining Meteorological, Radiological and Dose Assessment Data from MRP-DAS.

6.5 Westchester, Rockland, Putnam, Orange County Radiological Emergency Response Plans 7.0 RECORDS Forms and reports completed during an actual emergency are permanent records.

8.0 REQUIREMENTS AND COMMITMENT CROSS-REFERENCE IPEC Emergency Plan 9.0 ATTACHMENTS 9.1 Site Boundary Xp/Q by Pasquill Stability Category 9.2 Xp/Q Values for other Distances 9.3 Reuter-Stokes Location XpIQ Values 9.4 Accident Monitoring of Noble Gas Concentration in the Plant Vent.

9.5 Determination of Noble Gas Release Rate - Discussion 9.6 Determination Ratio of CDE-Thyroid to Gamma Dose Rates 9.7 Use of Chemistry Sample to Determine Radioiodine Release Rate and Thyroid Dose Conversion Factor

IPEC NON-QUALITY RELATED PROCEDURE IP-EP-310 Revision 10 L tgyJ* EMERGENCY PLAN IMPLEMENTING PROCEDURES REFERENCE USE Page 12 of 23 Attachment 9.1 Site Boundary Xp/Q (m-2 ) by Pasquill Stability Category Cross Valley (Wind Direction from 2100 - 3480 or Wind Speed > 4 m/s)

Sheet 1 of 2 Sector Wind Distance Pasquill Categories From (Meters)

A B C D E F G 1" 168.70 to 19120 2977 5.5 E-7 9.0 E-7 5.7 E-6 2.1 E-5 4.3 E-5 1.1 E-4 2.0 E-4 2* 191.20 to 213.70 3234 5.2 E-7 1.0 E-6 5.0 E-6 1.9 E-5 3.9 E-5 9.6 E-5 1.8 E-4 3 213.70 to 236.2° 716 3.6 E-6 2.0 E-5 5.3 E-5 1.5 E-4 2.7 E-4 4.9 E-4 7.1 E-4 4 236.20 to 258.70 701 3.7 E-6 2.0 E-5 5.4 E-5 1.6 E-4 2.7 E-4 5.0 E-4 7.2 E-4 5 258.70 to 281.20 762 3.2 E-6 1.8 E-5 4.8 E-5 1.4 E-4 2.5 E-4 4.7 E-4 6.8 E-4 6 281.20 to 303.70 625 4.7 E-6 2.5 E-5 6.4 E-5 1.8 E-4 3.1 E-4 5.5 E-4 7.9 E-4 7 303.7' to 326.20 610 4.9 E-6 2.6 E-5 6.6 E-5 1.9 E-4 3.2 E-4 5.6 E-4 8.0 E-4 8 326.20 to 348.70 701 3.7 E-6 2.0 E-5 5.4 E-5 1.6 E-4 2.7 E-4 5.0 E-4 7.2 E-5 9 348.70 to 11.20 1006 2.1 E-6 1.0 E-5 3.2 E-5 9.9 E-5 1.8 E-4 3.6 E-4 5.4 E-4 10 11.2" to 33.7° 1006 2.1 E-6 1.0 E-5 3.2 E-5 9.9 E-5 1.8 E-4 3.6 E-4 5.4 E-4 11 33.7" to 56.20 488 7.7 E-6 3.6 E-5 8.8 E-5 2.5 E-4 4.0 E-4 6.7 E-4 9.2 E-4 12* 56.20 to 78.7' 2349 6.6 E-7 1.5 E-6 8.3 E-6 3.0 E-5 6.0 E-5 1.4 E-4 2.6 E-4 13" 78.70 to 101.20 1802 8.1 E-7 3.2 E-6 1.3 E-5 4.3 E-5 8.5 E-5 1.9 E-4 3.3 E-4 14* 101.20to 123.70 1689 9.0 E-7 3.7 E-6 1.4 E-5 4.8 E-5 9.2 E-5 2.0 E-4 3.5 E-4 15* 123.70 to 146.2' 1432 1.2 E-6 5.1 E-6 1.9 E-5 6.1 E-5 1.2 E-4 2.4 E-4 4.0 E-4 16* 146.20 to 168.70 1416 1.2 E-6 5.2 E-6 1.9 E-5 6.2 E-5 1.2 E-4 2.5 E-4 4.0 E-4 at the sector center.

  • Plume for these sectors goes over the water before ittouches public or pnvate land. Site boundary in these cases is taken to be the landfall point

e e IPEC NoN-QuALIuTY RELATED PROCEDURE IP-EP-310 Revision 10

-L ,rY*, EMERGENCY PLAN IMPLEMENTING PROCEDURES REFERENCE USE Page 13 of 23

' iii I I III Attachment 9.1 Sheet 2 of 2 Site Boundary XpIQ (m"2) by Pasquill Stability Category Up Valley Plumes (wind speed <4 m/s) Wind Direction from 1020 - 2090 (1)

Site Boundary XgQ (rn2 ) by Pasquill Stability Category Down Valley Plumes (wind speed <4 m/s) Wind Direction from 3490 - 1010 (2)

(1) Plume centerline will always cross the site boundary at Sector 2. Therefore, the Sector 2 XV/Q values are used.

(2) Plume centerline will cross the site boundary at either Sector 8 (Pasquill Category A) or Sector 10 (for Pasquill Category B - G)

e e e

  • ">E/t .**.EMERGENCYPLAN Revision 10 YPLA NON-QUALITY RELATED PROCEDURE IP-EP-310 EMPRENC IMPLEMENTING PROCEDURES REFERENCE USE Page 14 of 23 Attachment 9.2 XjIQ Values for other Distances (M-2 )

Sheet 1 of 1 Miles Distance Pasquill Categories (Meters)

A B C D E F G 1.0 1608 9,5 E-7 4.0 E-6 1.5 E-5 5.0 E-5 9.0 E-5 2.1 E-4 3.4 E-4 1.5 2412 6.3 E-7 2.1 E-6 1,1 E-5 5.4 E-5 5.4 E-5 1.3 E-4 2.2 E-4 2.0 3216 5.2 E-7 8.3 E-7 5.0 E-6 1.9 E-5 3.9 E-5 9.6 E-5 1.8 E-4 2.5 4020 4.4 E-7 5.8 E-7 3.5 E-6 1.4 E-5 3.7 E-5 7.0 E-5 1.7 E-4 3.0 4824 3.6 E-7 5.0 E-7 2.8 E-6 1.0 E-5 2.2 E-5 5.7 E-5 1.3 E-4 3,5 5628 3.2 E-7 4.2 E-7 2.0 E-6 8.1 E-6 1.8 E-5 4.7 E-5 1.1 E-4 4.0 6432 2.8 E-7 3.7 E-7 1.6 E-6 6.8 E-6 1.5 E-5 4.0 E-5 9.4 E-5 4.5 7236 2.6 E-7 3.5 E-7 1.4 E-6 5.8 E-6 1.3 E-5 3.5 E-5 7.3 E-5 5.0 8040 2.4 E-7 3.2 E-7 1.2 E-6 5.1 E-6 1.1 E-5 3.1 E-5 6.7 E-5 5.5 8844 2.1 E-7 3.1 E-7 9.9 E-7 4.4 E-6 1.0 E-5 2.8 E-5 5.9 E-5 6.0 9648 2.0 E-7 2.7 E-7 8.3 E-7 3.8 E-6 9.1 E-6 2.5 E-5 5.4 E-5 6.5 10452 1.9 E-7 2.5 E-7 7.5 E-7 3.5 E-6 8.2 E-6 2.3 E-5 5.0 E-5 7.0 11256 1,8 E-7 2.4 E-7 6.7 E-7 3.2 E-6 7.5 E-6 2.1 E-5 4.7 E-5 7T5 12060 1.7 E-7 2.3 E-7 6.1 E-7 3.0 E-6 6.9 E-6 1.9 E-6 4.3 E-5 8.0 12864 1.6 E-7 2.2 E-7 5.5 E-7 2.7 E-6 6.3 E-6 1.8 E-5 4.1 E-5 8.5 13668 1.5 E-7 2.1 E-7 5.0 E-7 2.5 E-6 5.8 E-6 1.7 E-5 3.8 E-5 9.0 14472 1.5 E-7 2.0 E-7 4.6 E-7 2.3 E-6 5.5 E-6 1.6 E-5 3.6 E-5 9.5 15276 1.4 E-7 1.9 E-7 4.2 E-7 2.1 E-6 5.4 E-6 1.5 E-5 3.4 E-5 10.0 16080 1.4 E-7 1.8 E-7 4.0 E-7 2.1 E-6 5.3 E-6 1.5 E-5 3.4 E-5 1.8 E-7 4.0 E-7 2.1 E-6 5.3 E-6 1.5 E-5 3.4 E-5 10.0 16080 1.4 E-7

__f IPEC SITE NON-QUALuTY RELATED IP-EP-310 Revision EMERGENCY PLAN PROCEDURE 10 IMPLEMENTING PROCEDURE REFERENCE USE Page 15 of 23 Attachment 9.3 Reuter-Stokes Location XpdQ Values (m"2 )

Sheet I of 1 Stability Class

... Sector [

Monitor A B C D E F G Distance (m ) . ..................

1 3226 5.3E-7 8.4E-7 5.IE-6 1.9E-5 4.OE-5 9.8E-5 1.8E-4 2 3379 5.2E-7 8.3E-7 5.OE-6 1.8E-5 3.9E-5 9.7E-5 1.7E-4 3 2574 6.3E-7 1.2E-6 7.3E-6 I 2.6E-5 5.3E-5 1.2E-4 2.4E-4 4 1448 1.2E-6 4.6E-6 1.8E-5 6.1E-5 1LE-4 2.4E-4 3.9E-4 5 1287 1,.4E-6 6.4E-6 2.3E-5 7.3E-5 1.4E-4 2.8E-4 4.4E-4 6 643 4.3E-6 2.2E-5 6.OE-5 1.8E-4 3.OE-4 5.5E-4 7.7E-4 7 643 4.3E-6 2.2E-5 6.OE-5 1.8E-4 3.OE-4 5.5E-4 7.7E-4 8 804 2.9E-6 1.7E-5 4.5E-5 1.3E-4 2.4E-4 4.5E-4 6.6E-4 9 1,126 1.8E-6 8.5E-6 2.6E-5 8.1 E-5 1.5E-4 3.2E-4 4.9E-4 10 1287 IAE-6 6.4E-6 2.3E-5 7.3E-5 14E-4 2.8E-4 4.4E-4 1t 1287 1A4E-6 6.4E-6 2.3E-5 7.3E-5 1.4E-4 2.8E-4 4.4E-4 12 2494 6.4E-7 i..3E-6 7.5E-6 2.7E-5 5.6E-5 1.2E-4 2.4E-4 I

13 1870 8.OE-7 2.7E-6 1.2E-5 4.2E-5 j_8.IE-5 1.8E 3.2E-4 14 1.870 8.0E-7 2.7E-6 1.2E-5 4.2E-5 8.1E-5 .1.8E-4 3.2E-4 1.5 1648 9.4E-7 3.9E-6 1.5E-5 5.OE-5 9.7E-5 2.1E-4 3.6E-4 16 1770 .......

84E-7 I 3.3E-6 . .___________

1.3E-5 4.5E-5 8.8E-5 1.9E-4

_________..........______________ J_____

3.4E-4

  • IP9C SITE NON-QUALITY RELATED IP-EP-310 Revision Enlegy, EMERGENCY PLAN PROCEDURE 10 IMPLEMENTING PROCEDURE REFERENCE USE Page 16 of 23 Attachment 9.4 Accident Monitoring of Noble Gas Concentrations in the Plant Vent Sheet 1 of 2 NOTES
1. The Operations Support Center (OSC) Radiation Protection Team Leader will determine which reading to obtain first; plant vent or back-up plant vent monitoring.
2. Locations and equipment may be different from Unit 2 or Unit 3 Radiation readings may be obtained on the plant vent by the following:
a. Follow the provisions used by the OSC to plan and track team assignments.
b. Use a telescoping radiation monitoring instrument (e.g. teletector or equivalent) to perform this function.
c. As requested by OSC Radiation Protection Coordinator or Control Room (CR), REPORT radiation levels.
d. Proceed to the Containment Airlock area.
e. Using the fan-building wall for shielding, obtain radiation readings by Vapor Containment purge and exhaust ducts.
f. CAUTION The door leading out to the plant vent area may lock when closed. To prevent being trapped in the plant vent area, BLOCK OPEN THE DOOR prior to going to the plant vent area.
g. Proceed through the door to the plant vent area.
h. Obtain radiation readings at the following locations:
i. 6 feet from the plant vent 10 feet above the floor.
j. Contact with the plant vent 10 feet above the floor.
k. Notify the OSC or CR that radiation readings have been obtained and follow instructions as directed.

IPEC SiTE NON-QUALITY RELATED IP-EP-310 Revision

'Jrgy, EMERGENCY PLAN PROCEDURE 10 IMPLEMENTING PROCEDURE REFERENCE USE Page 17 of 23 Attachment 9.4 Accident Monitoring of Noble Gas Concentrations in the Plant Vent Sheet 2 of 2 Backup plant vent monitoring readings may be obtained by the following:

a. Follow the provisions used by the OSC to plan and track team assignments.
b. Proceed to the Auxiliary Building (PAB) Post Accident (PASS) Plant Vent Sample Cave
c. Ensure that the RMS-2 meter is positioned on top of the PASS plant vent shield.
d. Ensure that the RMS-2 detector is positioned on the floor of the PASS plant vent shield near the gas-sampling bulb.
e. Ensure that detector is connected properly to meter with the cable run through the 1-inch hole in the top of the PASS plant vent shield.
f. Ensure that the meter is energized by A/C and the power is on.
g. With the shield door closed, establish recirculation flow of plant vent gases through the PASS plant vent piping as outlined in procedure.
h. After recirculation reaches equilibrium (about 5 minutes) i, Record backup plant vent readings from the RMS-2 monitor.
j. Using a hand held meter, OBTAIN a background radiation reading outside of the PASS plant vent shield.
k. Report RMS-2 readings to the OSC or CR and FOLLOW instructions as directed.

IPEC SIrE NON-QUAUTY RELATED IP-EP-310 Revision 9 IIO~Y~ EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page 18 of 23 Attachment 9.5 Determination of Noble Gas Release Rate - Discussion Sheet 1 of 2 The following instrumentation/methodology can be used to determine the noble gas release rate.

" Plant vent monitor-low range (Direct Readout)

  • Plant vent monitor-high range '(Direct Readout)

" Plant vent survey-hand held instrument orremote readout

" Isotopic analysis of sample takenfrom release point.

" Condenser air ejector monitor (Direct Readout).

" Back-calculating a release rate based on actual field radiological data.

" Containment radiation monitors R-25 and R-26 to measure the source term within containment and to estimate potential releases from containment.

" Potential exposure to the population if a future release of the existing containment source term occurs, utilizing the following information:

1. Containment pressure relief line contains three isolation valves (one in containment and two outside).
2. Containment purge system contains two isolation valves on the Inlet Duct (one in containment and one outside).

3.: Containment purge system contains two isolation valves on the Exhaust Duct (one in containment and: one outside).

4. Weld Channel (WC) and Isolation Valve Seal Water System (IVSWS) are pressurized to ensure that during accident conditions, a pressure build up to AT LEAST 50 psi in containment would NOT cause a leak of radioactive material to the environment as long as the isolation valves remained in the closed position.

IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision LfteTg EMERGENCY PLAN PROCEDURE 10 IMPLEMENTING PROCEDURE REFERENCE USE Page 19 of 23 Attachment 9.5 Determination of Noble Gas Release Rate - Discussion Sheet 2 of 2

5. WITHOUT WC AND IVSWS, BUT with isolation valves closed, the containment leak rate is expected to be LESS THAN 0.1% of the containment volume per day (Tech Spec) WITH a pressure buildup to 50 psi inside containment. At lower pressures the leak rate would be smaller, approaching zero as the pressure differential approaches zero.
6. Containment Volume = 2.6 x 10 6 ft 3 = 7.4 x 1 0 10 cc
7. For Post-Steam Generator Tube Rupture (SGTR) cooldown using blowdown situations, the determination of the gaseous release rate from the blowdown flash tank shall be accomplished by determining the noble gas concentration in the faulted SG blowdown (Chem sample pCi/cc) AND the blowdown rate (GPM).
8. Complete Form EP-32 by using the following general formula when applying Airborne Sample Data to determine concentration or release rate. This is for a 10 cubic foot sample.
a. NG Release Concentration, pCi/cc =

mR/hr in field DCF, mR/hr per pCi/cc

b. NG Release Rate, Ci/sec =

Concentration(Ci/m 3)

  • Wind Speed (m/sec)

Xp/Q (m- 2 )

Note That pCi/cc = Ci/m 3

IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision 9 Enl mtry, EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page 20 of 23 Attachment 9.6, Sheet 1 of 2 Determine Ratio of CDE-Thyroid to Gamma Dose Rates Part 1 - Flow Chart - Gamma Dose Rate and CDE-Thyroid Dose Rate Obtain Gamma Reading at a location in the plume (mrem/hr) - 1mremJhr (G)

Obtain an iodine sample at the same location as gamma reading I (cpm) - Bkgd (cpm)jx4.6 E Determine iodine sample .volume (ft- )

activity (uCi/cc)°

= _uCilcc Iodine (1-conc)

Multiply I uCi/cc by 8.0 E+8 if < 24 hr, or by 2.6E+9 if > 24 hr Result is mreminr _mrem/hr CDE Thyroid CDE-Thyroid* (I)

This equation is based on a frisker efficiency (cpm/dpm) of about 0.0034 for iodine, and conversion of dpm to uCi, and cu ft to cc.

" tfthe iodine isotopic mix is known, then use the CDE-Thyroid Dose Conversion Factors from .7

IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision EMERGENCY PLAN PROCEDURE 10 IMPLEMENTING PROCEDURE REFERENCE USE Page 21 of 23 Attachment 9.6, Sheet 2 of 2 Determine Ratio of CDE-Thyroid to Gamma Dose Rates Part 2 - Flow Chart - Ratio of CDE-Thyroid to Gamma Dose Rates I = mrem/hr G = ________mremlhr I/G =

Noble Gas (gamma) dose rates will be more limiting than Iodine (thyroid) when considering protective actions-Notes:

  • The calculation above is for one location at one time. If practical, 3 or more such determinations of U/NG dose rate ratio should be performed.

" Note that actual TEDE will be somewhat higher than gamma dose rates, as it includes a portion of the thyroid dose; however, for the purpose of determining the limiting radionuclide, t*he use of gamma dose rate is adequate and removes unnecessary calculations,

  • Enlerg, IPEC SITE NoN-QUALITY RELATED IP-EP-310 Revision 9 EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page 22 of 23 Attachment 9.7 Use of Chemistry Sample to Determine Radioiodine Release Rate and Thyroid Dose Conversion Factor Sheet 1 of 2 Part 1 - Determine Radioiodine Release Rate Based on Chem. Sample Multiply [iodine uCi/cc] x [volume or mass release rate] x [constant] = iodine Ci/sec For plant vent or air ejector:

uCil/cc iodine cfm Constant (1) Iodine Ci/sec

__ 4.70E-04 For main steam line release.

uCi/cc iodine Ibmrhr Constant (2) Iodine Ci/sec 3.2 E-6 For steam generator blow down release uCi/cc iodine gpm. Constant (3) Iodine Ci/sec

_ _6.30E-05 (1) constant converts uCi/cc x cfm to Ci/sec, using Ci/uCi, cc/cu ft, and min/sec (2)constant converts uCi/cc x Ibm/hr to Ci/sec, using Ci/uCi, expected steam density, and hr/sec (3)constant converts uCi/cc x gpm to Ci/sec, using Ci/uCi, cc/gal, and min/sec

- i IPEC SiTe NON-QUALITY RELATED IP-EP-310 Revision O EMMY* EMERGENCY PLAN PROCEDURE 10 IMPLEMENTING PROCEDURE REFERENCE USE Page 23 of 23 Attachment 9.7 Use of Chemistry Sample to Determine Radioiodine Release Rate and Thyroid Dose Conversion Factor Sheet 2 of 2 Determination of Iodine Dose Factor Based on Chem. Sample Sample Date Sample Time Sample Description and Unit of Measurement (e.g.,

uCi/cc)

Col. 1 Col. 2 Col. 3 Col. 4 =Col 2x3 Thyroid Dose Concentration of Weighted Iodine Isotopes Cony. Factor (K2) Iodine Isotopes Conversion Factor 1-131 2.60E+09 1-132 1.50E+07 _

1-133 4.40E+08 i 1-134 2.60E+06 1-135 7.60E+07 __

1  !~

Total N/A sum oft K2 = mrad/hr per uCi/cc Iodine (mrad CDE Cod, 4K(2 Wtd, dividedfby thyroid per hour breathed) Col. 3 sum of Col. 3 _

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