ML17320A439

Public Version of Rev 0 to Emergency Plan Implementing Procedure PMP 2081.EPP.027, Unit Vent Emergency Release Level Determination.

ML17320A439
Person / Time
Site:	Cook
Issue date:	03/01/1983
From:	Murphy C INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17054D442	List: ML17320A439
References
PMP-2081.EPP.02, PMP-2081.EPP.2, NUDOCS 8303250056
Download: ML17320A439 (18)

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IIIIDIAItM8 /1//lCHIGA/V ElECTRIC COfdPAIIIIY DONALD C. COOK NUCLEAR PLANT PROCEDURE COVER SHEET Phoo~<<e No PMP 2081. EPP.027 Revision No. 0 TITLE UNIT VENT EMERGENCY RELEASE LEVEL DETERMINATION SCOPE OF REVISION SIGNATURES ORIGINAL Rev. I REV. 2 Rev. 0 PREPARED BY QUALITY ASSURANCE REVIEVI INTERFACING DEPAR I'MENT HEAD CONCURRENCE DEPARTMENT HEAD APPROVAL PLANT NUCLEAR SAFETY COMMITI'EE PLANT MANAGER APPROVAL I DATE OF ISSUE a-I-Q 8303250056 83032i PDR ADOCK 05000315

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PNP 2081. EPP.027 LIST OF EFFECTIVE PAGES Pa e Number Revision Number and Date 1 of 9 Revision 0 1-83 2of9 Revision 0 1-83 3of9 Revision 0 1-83 4 of 9 EXHIBIT A Revision 0 1-83 5 of 9 EXHIBIT B Revision 0 1-83 6 of 9 EXHIBIT C Revision 0 1-83 7 of 9 EXHIBIT D Revision 0 1-83 8 of 9 EXHIBIT E Revision 0 1-83 9 of 9 EXHIBIT F Revision 0 1-83 Page 1 of 1 Revision 0, 3-1-83

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INDIANA 8( MICHIGAN ELECTRIC COMPANY DONALD C. COOK NUCLEAR PLANT UNIT VENT B4ERGEHCY RELEASE LEVEL DETERMINATION (I<<

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i 1.0 PURPOSE 1.1 The purpose of this procedure is to provide guidance in deter-mination of concentrations and release rates of noble gas at the Auxiliary Building Unit Vent.

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2. 0 REFER ENC ES 2.1 Figure 1, Vent Stack Sampling Lines, AEPSC drawing supplied by P. K. Eapen.

2.2 Computer Program Output; Job tt2001 NSLSSTOP'3 March, 1980, 9:28 p.m.

3. 0 INITIAL CONDITIONS 3.1 R-26 has reached or is expected to reach full scale indication.

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3.2 It has been determined by the Shift Supervisor, Plant Radiation Protection Supervisor, their designees, or other responsible r$

plant staff personnel, that additional information on the poten-i] tial releases through the plant vent is needed.

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4. 0 PRECAUTIONS'.

4.1 Very high dose rates and high levels of airborne radioactivity 1 may be pr eseht in unexpected locations in the Auxiliary Building.

Precautions to keep internal and external exposure to a minimum shall be taken. These may include, but are not.limited to the following precautions:

4.1.1 At least two individuals shall be sent when there is doubt about the radiological conditions in the Auxiliary Building.

4.1.2 At least one functioning high range dose-rate instrument shall be available at all times. This normally means carrying a suitable spare instrument.

4.1.3 The instruments used for survey may be either GM or Ion Chamber type. If an instrument with a sealed chamber (such as the PIC-6A) is not available, an RM-16 with bullet probe may be used.

Page 1 of 9 Revision 0

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PMP 2081.EPP.027 4.1.4 Normally, if vent release conditions are serious enough to require activation of this procedure, airborne condi-tions in the Auxiliary Building would require the use of pressure demand type supplied air respirators by all personnel invol ved.

5. 0 ENVIRONMENTAL CONDITIONS 5.1 In all cases involving a significant increase in airborne acti-vity, licensed Control Room personnel should consult PflP 2080 EPP.001; levels ECC-19 and ECC-13 to determine (EAL's) have been exceeded.

if any emergency action Upon exceeding an EAL, the proper anergency condition shall be declared and the Energency Plan activated by implementing PMP 2080 EPP.001.

6.0 PROCEDURE 6.1 Obtain portable ccmmunication radio frcm the Technical Support Center, Control Room or an Emergency Station. Survey data taken at the sample station should be transmitted to the Control Room every fifteen (15) minutes.

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NOTE: Communication can also be made to the Technical Support Center and Operational Support Center, desired.

if necessary or 6.2 Obtain calibrated, operable, dose-rate reading instruments.

This should include, i f possible, an RM-16 (2 mR/hr to 20 R/hr) with bullet probe. If the range of the RM-16 is expected to be exceeded, a PIC-6A (1 mR/hr to 1000 R/hr) survey instrument from an emergency station should be obtained for use.

6.3 Carefully proceed to the 650'levation sample station.

6.4 Remove the shield plug and insert the detector so that inches from the sample line inside the shield. For exact it is 6 positioning of instruments, see Figure 2 for PIC-6A, or Figure 3 for RM-16 bullet probe.

6.5 If RM-16 with bullet probe is used in shield, slide lead plug up against bullet probe retainer to minimize radiation shine from sample line.

6.6 Open the remote operated sample valves and start the sample pump (controls are located near the sample station).

6.7 Obtain a reading on the survey instrument.

6.8 Using Attachment <1, determine the Activity Factor at Time After Event.

Page 2 of 9 Revision 0

PMP 2081.EPP.027 NOTE 1: Computer program CPM.002 may be used instead of steps 6.8 through 6.12.

NOTE 2: The Activity Factors of Attachment >1 correspond to one (1) R/hr at six inches frcm the sample line (activity uCi/cc factor units ~n>h ). The concentration required to give 1 R/hr will change with time. It is important that Attachment 81 be referenced frequently to insure that the proper activity factor is used.

6.9 Calculate the Unit Yent Release Concentration by multiplying the measured R/hr at the sample station times the activity factor, 6.10 Calculate the Unit Yent Release Rate by multiplying the release concentration times the unit vent flowrate (in CFM) times 4.72E-EXAMPLE:

2.5 R/hr 9 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> (1 day)

Activi ty Factor = 5. 2E3 Release Concentration = (2.5)(5.2E3)

= 1.3E4 qCi/cc Release Rate = (1.3E4)(50,000 CFM)(4.72E-4)

= 3. 1E5 Ci/sec 6.11 )e'en ccmpleted, turn sample pump OFF, close valves, remove survey instruments and replace shield plug.

6.12 To detemine Release Concentration and Release Rate of Total Iodine and Iodine 131, obtain Iodine Fraction from Attachment

82. Then multiply the Iodine Fraction times values from 6.9 and 6.10 from Attachment 82 and g3.

7.0 . FINAL CONDITIONS 7.1 Record data obtained in appropriate logs.

7.2 Inform the Shift Supervisor and/or Plant Radiation Protection Supervisor of results and any personnel exposure or unusual conditions noted in the Auxiliary Building.

Page 3 of 9 Revision 0

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UNIT VENT EIIFPGFNC" RELEASE DETERHIHATIDll PHP 20&1. EPP.027 104 ACTIVITY FACTOR (HN) vs. TINE (Hours or Days)

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1) Read R/hr 8 sample station; detertt!ine activity factor for Time After Event.

2) Calculate Release Concentration by mul- S I tiplying R/hr times activity factor.

3) Calculate Release Rate by multiplying release concentration times fiottrate I times 4.72E-4.

EXAHPLE:

I) 2.5 R/hr 9 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> (1 day)

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~ e PMP EPP INDEX 4

INDIAiVA 5 i~iICHIGAN . 0'ilER CGMPAi'IY DONALD C. COOK i'lUCLEAR PLANT PLANT MANAGER PROCEDURE Index Identification Ti tl e Revision i'lo. Comments Number And Date PMP 2081 EPP.025 Activation and Operation of Rev$ .sion 1 the Emergency News Source 6-24-82 (ENS) (An Emergency Operations Fac i 1 i ty)

EPP.026 Use of Stable Iodine for Revision 1 Thyroid Blocking During a 9-8-82 Radiation Emergency EPP.027 Uni t Vent Emergency Rel ease Revision Ci Level Determination 3-1-83 Page Ref. Oe... ~3 tfe, e '\ e J wp Y +, eel("e '0 9 Ii n8' e ' e

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PMo EPP INDEX LIST OF EXHIBITS PMP 2081 EPP.025 EXHIBIT A PLAN FOR REPORTING NON-ROUTINE INCIDENTS AT COOK NUCLEAR PLANT PMP 2081 EPP.026 CHECKLIST A USE OF A STABLE IODINE FOR THYROID BLOCKING DURING A RADIATION EMERGENCY PMP 2081 EPP.027 EXHIBIT A UNIT 1 (82 TYPICAL MIRROR IMAGE) VENT STACK SAMPLING LINES EXHIBIT B PORTABLE ION CHAMBER EXHIBIT C (DRAWING OF EQUIPMENT)

I EXHIBIT D UNIT VENT EMERGENCY RELEASE DETERMINATION ACTIVITY FACTOR VS. TIME (HOURS OR DAYS)

EXHIBIT E UNIT VENT TOTAL IODINE RELEASE DETERMINATION PMP 2082 EPP.009 EXHIBIT A EMERGENCY PREPAREDNESS ANNUAL CHECKLIST EXHIBIT B EMERGENCY PREPAREDNESS SEMI-ANNUAL CHECKLIST EXHIBIT C EMERGENCY PREPAREDNESS QUARTERLY CHECKLIST PAGE DATE 9

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