ML033180228

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Transmittal of Transmittal of Emergency Plan Implementing Procedure, IP-EP-310
ML033180228
Person / Time
Site: Indian Point Entergy icon.png
Issue date: 10/31/2003
From: Inzirillo F, Weaver D
Entergy Nuclear Indian Point 2
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
28766 IP-SMM-AD-103, Rev 0
Download: ML033180228 (21)
v • d • e


Text

31-OCT-03 Page: 16 DISTRIBUTION CONTROL LIST 9 ocument Name: EMER PLAN CCNAME NAME DEPT LOCATION 2 EP/TRAINING ADMINISTRATOR TRAINING (ALL EP'S) #48 3 RES DEPARTMENT MANAGER RES (UNIT 3/IPEC ONLY) 45-4-A 4 REFERENCE LIBRARY REC/TRN(UNT 3/IPEC ONLY) BLDG/17 9 JOINT NEWS CENTER EMER PLN (ALL EP'S) EOF 10 SHIFT MGR.(LUB-001-GEN) OPS (UNIT 3/IPEC ONLY) IP3 11 CONTROL ROOM & MASTER OPS(3PT-DOO1/6(U3/IPEC) IP3(ONLY) 14 EOF E-PLAN (ALL EP'S) EOF 16 AEOF/A.GROSJEAN(ALL EP'S) E-PLAN (EOP'S ONLY) WPO-12D 19 NUC ENGINEERING LIBRARY DOC (UNIT 3/IPEC ONLY) WPO/7A 21 TSC RECORDS 45-3-F 22 RESIDENT INSPECTOR US NRC 88' ELEVATION IP2 23 SILK DAVID NRC (ALL EP'S) OFFSITE 24 SILK DAVID NRC (ALL EP'S) OFFSITE

,'25 DOCUMENT CONTROL DESK NRC (ALL EP'S) OFFSITE 28 AVRAKOTOS N J A(UNIT 3/IPEC ONLY) OFFSITE 29 E-PLAN STAFF E-PLAN (ALL EP'S) EOF 30 E-PLAN STAFF E-PLAN (ALL EP'S) EOF 31 BARANSKI J(VOLUME I ONLY) ST. EMERG. MGMT. OFFICE OFFSITE 32 SUTTON A -(VOLUME I ONLY) DISASTER & EMERGENCY WESTCHESTR 33 LONGO N (VOLUME I ONLY) EMERGENCY SERVICES ROCKLAND 34 GREENE D (VOLUME I ONLY) DISASTER & CIVIL DEFENSE ORANGE 35 RAMPOLLA M(VOLUME I ONLY) OFFICE OF EMERG MANAGE PUTNAM 41 SIMULATOR TRAIN(UNIT 3/IPEC ONLY) 48-2-A 107 QA MANAGER QA (UNIT 3/IPEC) K-IP2-4302 319 L.GRANT (LRQ-OPS TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 354 L.GRANT(LRQ-OPS/TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 376 E-PLAN STAFF E-PLAN (ALL EP'S) EOF 424 HULBERT TRACY(7COPIES) (UNIT 3/IPEC ONLY) #48 510 L.GRANT(LRQ-OPS/TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 511 L.GRANT(LRQ-OPS/TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 512 L.GRANT (LRQ-OPS TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 513 L.GRANT (LRQ-OPS TRAIN) LRQ (UNIT 3/IPEC ONLY) #48 517 PLANT MANAGER'S OFFICE ADMIN/(UNIT 2/IPEC ONLY) IP2 518 LAZAZZARO MIKE UNIT 2(UNIT 2/IPEC ONLY) IP2 520 CONTROL ROOM (UNIT 2) OPS (UNIT 2 & IPEC ONLY) IP2 521 SIMULATOR TRAIN (UNIT 2/IPEC ONLY) IP2 522 NRC RESIDENT US NRC(UNIT 2/IPEC ONLY) IP2 523 DIGIOVANNI TINA (UNIT 2) REFERENCE LIBRARY 48-2-ALLE 524 JOHN MCCANN (UNIT 2) NUC SAFETY/LIC(ALL EP'S) IP2 558 TORRES DAMARIS R&D EEC BUILDING 2ND FL. IP2 A Eic Rev. Effective" IP-EP-1 15 Emergency Plan Forms 4 07/14/03 IP-EP-130 Emergency Notifications and Mobilization 0 05/05/03 IP-EP-250 Emergency Operations Facility 0 03/06/03 IP-EP-251 Alternate Emergency Operations Facility 1 03/06/03 IP-EP-255 Emergency Operations Facility Management and Liaisons N/A VOIDED IP-EP-260 Joint News Center 0 03/06/03 IP-EP-310 Dose Assessment 2 10/28/03 IP-EP-410 Protective Action Recommendations 2 06/06/03 IP-EP-430 Personnel Accountability 0 07/09/03 IP-EP-510 Meteorological, Radiological & Plant Data Acquisition System 1 03/06/03 IP-EP-520 Modular Emergency Assessment & Notification System (MEANS) 1 03/06/03 IP-EP-610 Emergency Termination and Recovery 1 03/06/03 IP-EP-620 Estimating Total Population Exposure 1 03/06/03

_ _ _ _ ~I I _ _ I __

Page I of 1 As of 10/28/03

MEfni IPEC NON-QUALITY RELATED IP-EP-310 Revision 2 MEnYergy, EMERGENCY PLAN PROCEDURE IMPLEMENTING N.

PROCEDURES REFERENCE USE Page I of 17

' CONTROLLED COPY # ASO**

Dose Assessment Prepared by: Daria Weaver Date Print Name Approval: Frank Inzirillo Date Print Name Effective Date: 10/28/2003 This procedure is excluded from further LI-100 reviews IP-EP-310 (Dose) R2.doc

IPEC NON-QUALITY RELATED IP-EP-310 Revision 2

-Enle'rxY,, EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 2 of 17 Table of Contents 1.0 PURPOSE .3

2.0 REFERENCES

.3 3.0 DEFINITIONS .3 4.0 RESPONSIBILITIES .4 5.0 DETAILS .4 5.1 USE OF MODULAR EMERGENCY ASSESSMENT AND NOTIFICATION SYSTEM (MEANS): .4 5.2 MR..DA...4 5.3 HAND CALCULATION: .4 5.4 IN THE EOF ONLY.. 7 6.0 INTERFACES .8 6.1 IP-EP-410, PROTECTIVE ACTION RECOMMENDATIONS .8 6.2 IP-EP-520, MODULAR EMERGENCY ASSESSMENT & NOTIFICATION SYSTEM (MEANS) .

6.3 IP-EP-530, OBTAINING METEOROLOGICAL, RADIOLOGICAL AND DOSE ASSESSMENT DATA FROM MRP-DAS . 8 7.0 RECORDS .8 8.0 REQUIREMENTS AND COMMITMENT CROSS-REFERENCE .8 9.0 ATTACHMENTS.8 9.1 ATTACHMENT 1, SITE BOUNDARY Xp/Q BY PASQUILL STABILITY CATEGORY .9 9.2 ATTACHMENT 2, Xp/Q VALUES FOR OTHER DISTANCES . 1 9.3 ATTACHMENT 3, 2, 5 AND 10 MILE Xp/Q VALUES .12 9.4 ATTACHMENT4, REUTER-STOKES LOCATION Xp/Q VALUES .13 9.5 ATTACHMENT 5, ACCIDENT MONITORING OF NOBLE GAS CONCENTRATION TN THE PLANT VENT. 14 9.6 ATTACHMENT 6, DISCUSSION .16

IPEC NON-QUALITY RELATED IP-EP-310 Revision 2 il'EtgYe EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 3 of 17 DOSE ASSESSMENT 1.0 PURPOSE To describe the methods of estimating the whole body and thyroid dose to onsite personnel and the offsite population in the event of an accidental release of radioactivity to the environment.

2.0 REFERENCES

2.1 IP-EP-520, Modular Emergency Assessment & Notification System (MEANS) 2.2 IP-EP-530, Obtaining Meteorological, Radiological and Dose Assessment Data from MR.P DAS 2.3 IP-2 Manual Determination of Release Rate (IP-EP-115 Form EP-17) 2.4 IP-3 Manual Determination of Release Rate (IP-EP-115 Form EP-18) 2.5 IPEC Manual Dose Assessment Worksheet/TEDE Whole Body Exposure Calculations and TODE Thyroid Exposure Calculations (IP-EP-15 Form EP-13) 2.6 IPEC Manual Dose Assessment Worksheet/Release Rate Back Calculated from Field Reading (IP-EP-115 Form EP-19) 2.7 Estimating Containment Activity via R-25 / 26 (IP-EP-1 15 Form EP-1 1) 3.0 DEFINITIONS 3.1 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) 3.2 Total Effective Dose Equivalent (TEDE) - The sum of the Deep Dose Equivalent (DDE) and the Committed Effective Dose Equivalent (CEDE).

3.3 Total Organ Dose Equivalent (TODE) - The sum of the Committed Dose Equivalent (CDE) to a body organ or tissue and the Deep Dose Equivalent (DDE).

3.4 Site Boundary - For Dose Assessment and Protective Action Recommendation purposes the Site Boundary is the closes distance at which members of the public would be exposed to a 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.

___ IPEC NON-QUALITY RELATED IP-EP-310 Revision 2 EnIlerYe. EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 4 of 17 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 planned and unplanned releases to the environment.

5.0 DETAILS 5.1 Use of Modular Emergency Assessment and Notification System (MEANS):

Refer to procedure IP-EP-520, MEANS for guidance on performing dose assessments using computer program.

5.2 MRP-DAS

Refer to IP-EP-510, Obtaining Meteorological, Radiological and Dose Assessment Data from MRP-DAS.

5.3 Hand Calculation:

5.3.1 Obtain the proper release rate calculation form (IP-EP- 15 Form EP-17 for Unit 2 and EP-18 for Unit 3).

5.3.2 Determine radioactive release concentration or rate (pCi/cc OR CPM) from installed radiation monitors OR via a Chemistry sample and enter onto the appropriate Release Rate calculation form (IP-EP-l15 Form EP-17 Unit 2 or IP-EP-l15 EP-18 Unit 3)

a. IF the plant vent survey is to be used THEN:
1. Follow guidance provide in Attachment 9.5, Accident Monitoring of Noble Gas Concentration in the Plant Vent.
2. Convert contact field reading on plant vent to pCi/cc using conversion factor for appropriate time after shutdown.

See the appropriate Release Rate calculation form (IP-EP-115 EP-FORM-17 Unit 2 or IP-EP-l15 EP-FORM-18 Unit 3).

b. WHEN back calculating release rate from field recordings use (IP-EP-i15 Form EP-19).
c. WHEN using R-25/26 to calculate the release rate, use (IP-EP-115 Form EP-11).

IPEC NON-QUALITy RELATED IP-EP-310 Revision 2

-=Z E JyerY EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES ~~~REFERENCE USE Page 5 of 17 5.3.3 If necessary, determine the rate at which this concentration is being released. Insert values obtained into the proper equation(s) on the appropriate section of the Release Rate calculation form (IP-EP-I15 Form EP-17 Unit 2 or IP-EP-115 EP-18 Unit 3). Calculate the noble gas release rate (NGRR) 5.3.4 Calculate the radioiodine release rate (Ci/sec) using the default equation (assumes NG/I ratio) OR the Chem Sample equation on the appropriate Release Rate calculation form (IP-EP-l15 Form EP-17 Unit 2 or IP-EP-l15 EP-18 Unit 3).

5.3.5 Obtain the appropriate Xp/Qs from Attachment 9.1, 9.2 or 9.3.

Record these values on the IPEC Manual Dose Assessment Worksheet (IP-EP-l15 Form EP-13).

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

5.3.7 Enter the release rates (RR), wind speed (WS) AND appropriate constants on the IPEC Manual Dose Assessment Worksheet (IP-EP-115 Form EP-13).

5.3.8 Determine the TEDE (Whole Body) AND TODE (Thyroid) exposure rates at the site boundary, 2, 5 AND 10 mile distances.

5.3.9 Determine exposure rates if desired, at other distances utilizing the Xp/Q's from Attachment 9.2.

NOTE bsence of information, use four (4) hours as default release duration.

5.3.10 IF the calculated or actual doses exceed the following THEN, if in the CR, immediately inform the Shift Manager (SM) or Emergency Plant Manager (EPM) or, if in the Emergency Operations Facility (EOF)/ Alternate Emergency Operations Facility (AEOF), the Offsite Radiological Assessment Director (ORAD):

a. 1 Rem /hr TEDE, or
b. 5 Rem/hr TODE, or
c. 1 Rem Integrated Dose TEDE, or
d. 5 Rem Integrated Dose TODE

SMOW IPEC NON-QUALITY RELATED IP-EP-310 Revision 2 EnIergy. EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 6 of 17 5.3.11 Determine if there is a release above plant Technical Specifications using one or more of the following methods:

Release Point Rad Monitor Tech Spec Release Rate Setpoint Plant Vent uCi/sec R-27 6.0 E+4 uCi/sec Plant Vent uCi/cc R-44 (U2) / R-14 (U3) 2.2 E-3 uCi/cc SG Safety or Main Steam Line Mons P/S leak > 15 gpd and Steam Atmospheric line activity > .01 uCi/cc with Atmospheric at 10% open or greater Hole in the VC R-25/26 1 R/hr 5.3.12 If there is a release to the environment above Technical Specifications, complete Parts II & I or New York Radiological Data Form. These forms (IP-EP-1 15 Forms EP-1 and EP-2) can be filled in by hand or refer to procedure IP-EP-520, Modular Emergency Assessment & Notification System (MEANS) to have MEANS automatically print out these forms.

5.3.13 (IP-EP-1 15 Form EP-1) "New York State Radiological Data Form, Part I", General Information, 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.

5.3.14 (IP-EP-l15 Form EP-2), "New York State Radiological Data Form Part II, Radiological Assessment Data" shall be completed and transmitted:

  • As soon as possible after it has been determined that a release above technical specifications exists.
  • With updates approximately every 30 minutes; Time interval may be lengthened with concurrence of offsite agencies.
  • If there is a significant change in the release.

Ak IPEC NON-QUALITY RELATED IP-EP-310 Revision 2

'~Enlegy. EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURES REFERENCE USE Page 7 of 17 5.3.15 To help visualize plume location, determine the proper plume dispersion overlay:

a. IF Speed <4 m/s AND Direction between 340° - 1010 THEN:
1. Use BLUE down valley overlays.
2. CENTER overlay on plant and ALIGN N - S and E - W lines with those on map.
b. IF Speed < 4 m/s AND Direction between 102° - 209° 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 2 4 m/s OR direction between 2100 - 3390 THEN:
1. Use RED cross valley overlays.
2. CENTER overlay and point plume along wind direction 5.3.16 IF a General Emergency has been declared AND/OR calculated or actual offsite doses are EQUAL to or GREATER than the following THEN use IP-EP-410 "Protective Action Recommendations" to determine what protective action recommendations should be conveyed to the EPM/ED:
a. 1 Rem /hr TEDE, or
b. 5 Rem/hr TODE, or
c. 1 Rem Integrated Dose TEDE, or
d. 5 Rem Integrated Dose TODE 5.4 In the EOF only:

5.4.1 Calculate projected doses using MEANS or manual methods.

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

5.4.3 If available, back-calculate and/or verify release rates based on actual field radiological data using an IPEC Manual Dose Assessment Worksheet, Back Calculating Release Rate from Field Data (IP-EP-l15 Form EP-19).

5.4.4 Review Site Perimeter surveys.

5.4.5 Review Field Surveys.

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"' IPEC NON-QUALITY RELATED IP-EP-310 Revision 2

_Enlerty,. EMERGENCY PLAN PROCEDURE IMPLEMENTING R PROCEDURES REFERENCE USE Page 8 of 17 5.4.6 Review Reuter Stokes data. Attachment 9.4, Reuter-Stokes Location Xp/Q for 1 Meter/Sec Wind-speed provides Xp/Q values for comparison purposes.

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

5.4.8 If required, estimate release rates utilizing High Range Vapor Containment radiation monitors R-25/26 (IP-EP-I15 Form EP-11).

6.0 INTERFACES 6.1 IP-EP-410, Protective Action Recommendations 6.2 IP-EP-520, Modular Emergency Assessment & Notification System (MEANS) 6.3 IP-EP-510, Obtaining Meteorological, Radiological and Dose Assessment Data from MRP-DAS.

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 2, 5 and 10 Mile Xp/Q Values 9.4 Reuter-Stokes Location Xp/Q Values 9.5 Accident Monitoring of Noble Gas Concentration in the Plant Vent.

9.6 Discussion

( c (

Ak IPEC NON-QUALITY RELATED PROCEDURE IP-EP-310 Revision 2 EnIlergy. EMERGENCY PLAN IMPLEMENTING PROCEDURES REFERENCE USE Page 9 of 17 Attachment 9.1 Site Boundary Xp/Q by Pasquill Stability Category Cross Valley (Wind Direction from 210° - 3390 or Wind Speed 2 4 mis)

Sheet 1 of 2

  • Plume for these sectors goes over the water before it touches public or private land. Site boundary in these cases is taken to be the landfall point at the sector center.

( (7 C(

___ IPEC NON-QUALITY RELATED PROCEDURE IP-EP-310 Revision 2 Enllergy, EMERGENCY PLAN IMPLEMENTING PROCEDURES REFERENCE USE Page 10 of 17 Attachment 9.1 Sheet 2 of 2 Site Boundary Xp/Q by Pasquill Stability Category Up Valley Plumes (wind speed <4 mIs) Wind Direction from 1020 - 209°(1)

Site Boundary Xp/Q by Pasquill Stability Category Down Valley Plumes (wind speed <4 mIs) Wind Direction from 340°-101°(2)

Pascquill Cate-gories A B I C :D) E F I G 3.7 E-6 1.0 E-5 l 3.2 E-5 9.9 E-5 1.8 E-4 3.6 E-4 5.4 E-4 (1) Plume centerline will always cross the site boundary at sector 2. Therefore, the sector 2 XpI/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)

(C C C

-Z== EflertYoIPEC EnlergyF EMERGENCY PLAN NON-QUALITY RELATED PROCEDURE IP-EP-310 Revision 2 IMPLEMENTING PROCEDURES REFERENCE USE Page 11 of 14 Attachment 9.2 Xp/Q Values for other Distances Sheet 1 of 1 Sector 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 7.5 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

IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision 2 rEniergy, EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page 12 of 17 Attachment 9.3 2, 5 and 10-Mile XpIQ Values Sheet 1 of 1 XtiIQ PASQUILL 2 MILE 5 MILE 10 MILE CATEGORY A 5.2E-7 2.4E-7 1.4E-7 B 8.3E-7 3.2 E-7 1.8E-7 C 5.0 E-6 1.2E-6 4.0 E-7 D 1.9E-5 5.1 E-6 2.1 E-6 E 3.9E-5 1.1 E-5 5.3E-6 F 9.6E-5 3.1 E-5 1.5E-5 G 1.8E-4 6.7E-5 3.4 E-5

IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision 2

- E ntergy, EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page 13 of 17 Attachment 9.4 Reuter-Stokes Location XpIQ Values Sheet 1 of 1 Stability Class Sector Monitor A B C D E F G Distance (m) 1 3226 5.3E-7 8.4E-7 5.1E-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 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 1.lE-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 4.4E4 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 1.3E4 2.4E-4 4.5E-4 6.6E-4 9 1126 1.8E-6 8.5E-6 2.6E-5 8.1E-5 1.5E-4 3.2E-4 4.9E-4 10 1287 1.4E-6 6.4E-6 2.3E-5 7.3E-5 1.4E-4 2.8E-4 4.4E-4 11 1287 1.4E-6 6.4E-6 2.3E-5 7.3E-5 1.4E-4 2.8E-4 4.4E-4 12 2494 6.4E-7 1.3E-6 7.5E-6 2.7E-5 5.6E-5 1.2E-4 2.4E-4 13 1870 8.OE-7 2.7E-6 1.2E-5 4.2E-5 8.1E-5 1.8E-4 3.2E-4 14 1870 8.OE-7 2.7E-6 1.2E-5 4.2E-5 8.1E-5 1.8E-4 3.2E-4 15 1648 9.4E-7 3.9E-6 l.5E-5 5.OE-5 9.7E-5 2.11E-4 3.6E-4 16 1770 8.4E-7 3.3E-6 1.3E-5 4.5E-5 8.8E-5 1.9E-4 3.4E-4

IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision 2

' 'En~ergy, EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page 14 of 17 Attachment 9.5 Accident Monitoring of Noble Gas Concentrations in the Plant Vent Sheet 1 of 2 NOTES

1. The Operations Support Center (OSC) H.P Team Leader I Rad. Protection Coordinator 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 to Unit 3 1.0 Radiation readings may be obtained on the plant vent by the following:

1.1 Follow the provisions used by the OSC to plan and track team assignments.

1.2 Use a telescoping radiation monitoring instrument (e.g. teletector or equivalent) to perform this function.

1.3 AAs requested by OSC Health Physics (HP) Team Leader or Control Room (CR), REPORT radiation levels.

1.4 Proceed to the Containment Airlock area.

1.5 Using the fan-building wall for shielding, obtain radiation readings by Vapor Containment purge and exhaust ducts.

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.

1.6 Proceed through the door to the plant vent area.

1.7 Obtain radiation readings at the following locations:

1.7.1 6 feet from the plant vent 10 feet above the floor.

1.7.2 Contact with the plant vent 10 feet above the floor.

1.8 Notify the OSC or CR that radiation readings have been obtained and follow instructions as directed.

n IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision 2 J/'~Elergye EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page is of 17 Attachment 9.5 Accident Monitoring of Noble Gas Concentrations in the Plant Vent Sheet 2 of 2 2.0 Backup plant vent monitoring readings may be obtained by the following:

2.1 Follow the provisions used by the OSC to plan and track team assignments.

2.2 Proceed to the Auxiliary Building (PAB) Post Accident (PASS) Plant Vent Sample Cave 2.3 Ensure that the RMS-2 meter is positioned on top of the PASS plant vent shield.

2.4 Ensure that the RMS-2 detector is positioned on the floor of the PASS plant vent shield near the gas-sampling bulb.

2.5 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.

2.6 Ensure that the meter is energized by A/C and the power is on.

2.7 With the shield door closed, Establish recirculation flow of plant vent gases through the Pass plant vent piping according to RE-CS-040.

2.8 After recirculation is equilibrated (about 5 minutes) 2.9 Record backup plant vent readings from the RMS-2 monitor.

2.10 Using a hand held meter, OBTAIN a background radiation reading outside of the PASS plant vent shield.

2.11 Report RMS-2 readings to the OSC or CR and FOLLOW instructions as directed.

___m* IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision 2

-- ElWagye. EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page 16 of 17 Attachment 9.6 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 or remote readout

- Isotopic analysis of sample taken from release point.

- Condenser air ejector monitor (Direct Readout).

- Main steam line monitors.

- 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.

ilk IPEC SITE NON-QUALITY RELATED IP-EP-310 Revision 2

' ~rdegye EMERGENCY PLAN PROCEDURE IMPLEMENTING PROCEDURE REFERENCE USE Page 17 of 17 Attachment 9.6 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 106 ft3 = 7.4 x 1010 cc
7. For IP2 and 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).

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