ML032880555

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to EPIP EM-225A, Post-Accident RB Hydrogen Control.
ML032880555
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 10/04/2003
From:
Florida Power & Light Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML032880555 (30)
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Text

PASSPORT DOCUMENT To  : NRC NRC Facility CR3 Department : TRANSMITTAL Address  : CR3-01242 / MAIL CODE: N/A DC DESK EwgX Page: 1 From  : CR3DOCSVCS Attention: DOCUMENT SERVICES - SA2A Address  : FLORIDA POWER CORPORATION CRYSTAL RIVER COMPLEX 15760 WEST POWERLINE STREET City  : CRYSTAL RIVER State:FL Postal Code: 34428-6708 Country  : UNITED STATES Email Contact Date/Time :10/04/03 12:19 Transmittal Group Id:0000012743 Trans No.  : 000127926

Title:

Total tems: 00001 Item Facility Type Sub Document Number Sheet Doc Status Revision Doc Date Copy # Media Copiei 0001 CR3 POM EMG EM0225A ACTIVE 009 H 01 If a document was not received or is no longer required check the response below and return to sender.

Documents noted above not received (identify those not received).

I no longer require distribution of these documents (identify those no longer required).

Date: Signature:

,"' Progress Energy Information Use PROGRESS ENERGY CRYSTAL RIVER UNIT 3 PLANT OPERATING MANUAL EMERGENCY PLAN IMPLEMENTING PROCEDURE EM-225A POSTACCIDENTRB HYDROGEN CONTROL EM-225A Rev. 9 Page 1 of 29

TABLE OF CONTENTS SECTION PAGE 1.0 PURPOSE ............................ 3

2.0 REFERENCES

.........................................................................................................................3 2.1 Developmental References ............................. 3 3.0 PERSONNEL INDOCTRINATION ............................ 4 3.1 Definitions ... 4.........................4 3.2 Responsibilities ... 4.........................4 3.3 Limits and Precautions ........................................................................... ..... 5.........

5 4.0 INSTRUCTIONS .6 ENCLOSURES 1 Hydrogen Monitoring .7 2 Initial Preparations for Purging .9 3 Portable Compressor Installation............................... 11 4 Prerequisite Field Actions ............................... 13 5 RB Pressurization for Hydrogen Purge ............................... 15 6 Purge Release Authorization Form ............................... 17 7 Purging RB ............................... 18 8 RB Hydrogen Concentration Trend ............................... 22 9 Access Routes ............................... 23 10 Continuous Purge Flow Rates After a LOCA ............................... 27 11 Hydrogen Purge System Flow Diagram ............................... 28 EM-225A Rev. 9 Page 2 of 29

1.0 PURPOSE This procedure provides guidance for the Accident Assessment Team (AAT) and other emergency response personnel in developing appropriate actions to monitor and control post-accident hydrogen concentration in the Reactor Building (RB) to protect the health and safety-of the general public and Crystal River Energy Complex personnel during an emergency at CR-3.

2.0 REFERENCES

2.1 Developmental References 2.1.1 FSAR Chapter 14 Appendix B 2.1.2 MAR 91-05-03-01, Hydrogen Purge Redundancy Restoration' 2.1.3 MAR 93-05-03-02, Hydrogen Purge Redundancy Restoration, Elect. & I&C' 2.1.4 CALC M-99-0051, Mission Dose Assessment' 2.1.5 CALC 1-90-0013, "Post Accident Reactor Building Hydrogen Purge Flow Accuracy' 2.1.6 CALC M-90-0056, Hydrogen Mini Purge Pressure Loss" 2.1.7 CALC M-99-0052, Zone Environmental Radiation Dose for LOCA" 2.1.8 CALC N-00-0002, Public And Control Room Dose From A LOCA Using The Alternative Source Term" 2.1.9 CALC M-85-1004, H2 Generation Rate" 2.1.10 CALC 1-90-0023, RB Hydrogen Concentration Loop Accuracy" EM-225A Rev. 9 Page 3 of 29

3.0 PERSONNEL INDOCTRINATION 3.1 Definitions 3.1.1 Off-shore winds - winds originating from NNE to SE sectors (011.20 to 146.30). The most common time for this to occur is midnight.

3.2 Responsibilities 3.2.1 Emergency Coordinator (EC) or designee

- Approves RB purge before initiation (Enclosure 6).

- Ensures coordination with off-site agencies before initiation of RB purges.

3.2.2 Accident Assessment Team

- Tracks RB conditions and predicts time for RB purge initiation.

- Monitors the effectiveness of purge methods in hydrogen removal.

- Informs the EC of RB conditions and the status of pre-planned releases

- Assign a Purge Release Authorization Form number (Enclosure 6).

3.2.3 Dose Assessment Team

- Monitors meteorological conditions and predicts when off-shore winds should exist.

- Projects off-site doses for proposed RB purges.

3.2.4 Procurement Representative

- Ensures required air compressors are delivered on-site within the required time.

- Ensures support materials (fuel, oil, etc,) are available to support portable compressor operations.

3.2.5 Emeroencv Repair Team

- Connects temporary air compressors when delivered.

- Installs LR-82-FE, LR-83-FE, LR-82-FI, and LR-83-FI in accordance with MP-815, Installation of Post Accident Hydrogen Purge Monitors.

3.2.6 Radiation Monitoring Team

- Evaluates actual plant radiological conditions and determine routes to be used (see Enclosure 9).

3.2.7 Operations

- Performs RB purge per Enclosure 7.

EM-225A Rev. 9 Page 4 of 29

3.3 Limits and Precautions 3.3.1 All hydrogen concentration values referenced in this procedure are presented in % by volume as indicated on the hydrogen analyzers.

3.3.2 Maintain RB hydrogen concentration c 3.6% to provide adequate margin below the lower flammability limit of 4.1% for hydrogen in air.

3.3.3 Travel through radiation areas should be as shown in Enclosure 9 unless otherwise directed by the emergency RWP.

3.3.4 Purging should be performed under favorable meteorological conditions (off-shore winds) whenever possible.

3.3.5 RB pressure must be carefully controlled during purge evolutions to prevent ES actuations from high RB pressure.

3.3.6 The purging criteria established by this procedure is not valid during Severe Accidents.

3.3.7 Mission dose calculations credit 10 days of radioactive decay when determining the dose received for performance of local actions. Taking local actions before this time may result in excessive radiation exposure.

3.3.8 If a predictable pattern of off-shore winds is identified, consideration should be given to performing a series of intermittent releases during periods when off-shore winds are present.

3.3.9 The AAT is responsible for overall implementation of this procedure. TSC teams responsible for performing the specific actions listed in the enclosures of this procedure are denoted at the end of each step as applicable.

EM-225A Rev. 9 Page 5 of 29

4.0 INSTRUCTIONS '

NOTE Enclosure 11, Hydrogen Purge System Flow Diagram," depicts the hydrogen Purge flow paths established by this procedure. Enclosure 11 is provided for information only.

4.1 IF RCS LOCA conditions exist, THEN MONITOR RB hydrogen concentration in accordance with Enclosure 1, Hydrogen Monitoring, of this procedure.

4.2 IF at any time RB hydrogen concentration 2 1%,

THEN PERFORM the following:

  • Perform Enclosure 2, Initial Preparations For Purging, in this procedure.
  • Notify Procurement Representative to contact Hydrogen Recombiner vendor to coordinate preliminary transportation plan and schedule for delivery of recombiner.

Refer to EM-104.

  • RMT/AAT evaluate plant conditions and equipment availability to determine if a Hydrogen Recombiner will be required. Notify Procurement Representative if recombiner is required.

4.3 WHEN at any time RB purge compressors arrive on site, AND radiological conditions permit; THEN PERFORM Enclosure 3, Portable Compressor Installation, of this procedure.

4.4 WHEN RB hydrogen concentration 2 3.3%,

AND radiological conditions permit, THEN PERFORM Enclosure 4, Prerequisite Field Actions, of this procedure.

4.5 WHEN RB hydrogen concentration 2 3.4%,

THEN PERFORM Enclosure 5. RB Pressurization For Hydrogen Purge, of this procedure.

4.6 WHEN RB hydrogen concentration 2 3.5%,

THEN begin Enclosure 6, Purge Release Authorization Form, of this procedure.

4.7 WHEN any of the following conditions exist:

- RB H2 concentration 2 3.5% for 2 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />

- RB H2 concentration 2 3.5% and off shore winds exist RB H2 concentration 2 3.6%,

THEN PERFORM Enclosure 7, Purging RB, of this procedure.

4.8 WHEN RB purge is stopped, THEN GO TO Step 4.6 or this procedure.

EM-225A Rev. 9 Page 6 of 29

ENCLOSURE 1 (Page 1of 2)

HYDROGEN MONITORING STATUS

  • LOCA Conditions Exist ACTIONS DETAILS 1.1 ___ Ensure one H2 analyzer is aligned * - Ensure applicable steps of EOP-1 4, and placed in service (Ops). Enclosure 2, PPO Post Event Actions, have been completed for H2 analyzers.

1.2 _ Plot RB H2 concentration on

  • Obtain H2 concentrations from either of the Enclosure 8 of this procedure following:

(AAT).

EOP-14, Enclosure 21, RB Hydrogen Monitor Log.

RECALL 1.3 Project when RB H2 concentration

  • Use H2 concentration plotted on will exceed action levels of this Enclosure 8 of this procedure.

procedure (AAT).

  • - Extrapolate to estimate time when H2

- concentration will reach procedure action levels.

Action Level Date Time H2 1%

H2 2 3.3%

H 2 Ž 3.4%

H2 Ž 3.5%

H2 2 3.6%

EM-225A Rev. 9 Page 7 of 29

ENCLOSURE 1 (Page 2 of 2)

HYDROGEN MONITORING (Cont'd)

ACTIONS DETAILS 1.4 _ IF at anytime H2 concentration is

  • Action levels based on RB H2 concentrations.

> an action level of this procedure, THEN immediately notify the Action Level Required Action Accident Assessment Team Coordinator (AAT). H2 > 1% See step 4.2 H2 2 3.3% See step 4.4 H2 > 3.4% See step 4.5 H2 > 3.5% See step 4.6 1.5 - Continue monitoring RB H2 - Plot RB H2 concentration on Enclosure 8 of concentration (AAT). this procedure every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

Perform Step 1.3 of this Enclosure every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

EM-225A Rev. 9 Page 8 of 29

ENCLOSURE 2 (Page 1 of 2)

INIbAL PREPARATIONS FOR PURI1;IG STATUS

  • RB H2 Concentration > 1%

ACTIONS DETAILS 1.1 Notify the Procurement

  • Review this procedure for:

Representative, Radiation Procurement of tools and equipment.

Controls Coordinator, Repairs Selection of emergency team personnel.

Coordinator and Control Room to Assigning Operations support to the OSC.

begin preparations for RB purge. Initiation of reentry process per EM-104.

Collection of radiological and meteorological data.

Review of dose projection process.

1.2 Evaluate plant radiological

  • Refer to Enclosure 9 for locations of required conditions and determine routes to actions/components and suggested routes.

be used to perform Enclosures 2, 3, 4, 5, and 7 (RMT).

1.3 Notify off-site sources to obtain

  • Obtain 3 or more air compressors from one portable air compressors of the following off-site sources:

(Procurement Representative).

Compressed Air Systems, Telephone (800) 626-8177 OR (813) 626-8177 (Tampa)

Air Components & Equipment, Inc.,

Telephone (813) 621-3087 (Tampa)

  • Obtain air compressors capable of 225 scfm minimum each for continuous purge (rated exhaust flow) and rated discharge TEMP < 1500F.

1.4 ___ Ensure all CCHE habitability breaches are sealed (ERT).

EM-225A Rev. 9 Page 9 of 29

ENCLOSURE 2 (Page 2 of 2)

PREPARATIONS FOR RB HYDROGEN PURIGE (Cont'd)

ACTIONS DETAILS 1.5 ___ Monitor meteorological conditions * - Off-shore winds originate from NNE to SE to predict off-shore wind cycle sectors (011.20 to 146.30).

(DAT).

  • Most common time for off-shore winds is midnight.

1.6 Ensure the purge flow

  • Refer to MP-815 for location of instrumentation cart is properly equipment.

staged and equipped (ERT).

  • DO NOT install purge instruments until Enclosure 4 is performed.

1.7 Ensure power is available to

  • RX MCC 3B2 is energized.

LR-82-FI and LR-83-FI receptacle (OPS).

  • RX MCC 3B2, BKR 8AR closed.
  • ACDP-20, BKR 12 closed.

(143 ft AB near elevator) 1.8 Notify the Accident Assessment Team Coordinator that Enclosure 2 is complete (AAT).

EM-225A Rev. 9 Page 10 of 29

ENCLOSURE 3 (Page 1 of 2)

PORTABLE COMPRESSOR INSTALLATION STATUS

  • Purge Compressors Are On Site

ACTIONS DETAILS 1.1 Consult Radiation Monitoring

  • Refer to Enclosure 9 for locations of required Team to determine routes and actions/components and suggested routes.

precautions to be used during compressor installation (ERT).

1.2 _ Connect portable air compressors

  • DO NOT open LRVs at this time.

(ERT).

  • Indicate LRVs to which portable air compressors are connected.
  • Preferred - RB portable compressor connections (119 ft B outside west wall):

LRV-1 1 _ LRV-1 6 LRV-12 _ LRV-17

= LRV-13 _ LRV-18

_ LRV-1 4 _ LRV-1 9 LRV-1 5 _ LRV-20

  • ___ Alternate - H2 recombiner connections (119 ft B outside west wall):

(adapters in stores - CAT ID # 0001260356)

LRV-92 (Pen 125)

_ LRV-90 (Pen 121)

LRV-94 (Pen 125)

LRV-88 (Pen 122)

EM-225A Rev. 9 Page 11 of 29

ENCLOSURE 3 (Page 2 of 2)

PORTABLE COMPRESSOR INSTALLATION (Cont'd)

ACTIONS DETAILS 1.3 Ensure plant personnel are familiar with the operation of the portable compressors (OPS/ERT).

1.4 Obtain support materials for

  • Determine portable compressor fuel and oil portable compressors consumption rate from compressor vendor.

(Procurement Representative).

  • - Ensure sufficient fuel and oil supplies are available to support compressor operation.

1.5 Notify the Accident Assessment Team Coordinator that Enclosure 3 is complete (OPS/ERT).

EM-225A Rev. 9 Page 12 of 29

ENCLOSURE 4 (Page 1 of 2)

PREREQUISITE FIELD ACTIONS STATUS RB H2 Concentration 2 3.3%

ACTIONS DETAILS 1.1 _ Consult Radiation Monitoring

  • Refer to Enclosure 9 for locations of required Team to determine routes and actions/components and suggested routes.

precautions to be used while performing RB Purge Field Actions (ERT).

1.2 Defeat all starting interlocks on 1. Obtain key 92 from the Control Room.

AHF-7A and 7B (OPS).

2. Select RB exhaust fan permissive bypass switches to the "Emergency" position .

(119 ft B East Door)

  • Select AHV-77 to the EMERGENCY emergency operation (OPS). OPERATION OF AHD-95, AHD-96, AND AHD-94" position.

(143 ft AB Ventilation Equipment Area, HVAC-13)

  • _ Select AHV-78 to the EMERGENCY OPERATION OF AHD-97, AHD-98, AND AHD-94" position.

(143 ft AB Ventilation Equipment Area, HVAC-13)

EM-225A Rev. 9 Page 13 of 29

ENCLOSURE 4 (Page 2 of 2)

PRREQUISITE FIELD ACTIONS (Cont'd)

ACTIONS DETAILS 1.4 ___ Ensure RM-A1 is in service

  • Ensure RM-A1 pump is running with path (OPS/DAT). to and from pump (143 ft AB).
  • Ensure RM-A1 monitors have power aligned.
  • _ Ensure the following MCB annunciator links are closed:

1712 1713 1714

  • - Adjust RM-A1 gas channel HIGH" alarm setting potentiometer to maximum (clockwise).
  • Ensure LMH controller associated with RM-A1 is in "AUTO".

1.5 - Notify Repairs Coordinator to

  • CONCURRENTLY PERFORM MP-815, obtain and install flow Installation of Post Accident H2 Purge Flow instrumentation (ERT). Instruments.

1.6 WHEN H2 Purge Flow Instruments are installed THEN notify the Accident Assessment Team Coordinator that Enclosure 4 is complete (OPS/ERT).

EM-225A Rev. 9 Page 14 of 29

ENCLOSURE 5 (Page 1 of 2)

RB PRESSURIZATION FOR HYDROGEN PURGE STATUS

  • RB H2 Concentration 2 3.4%
  • Portage Air Compressors are installed.

ACTIONS DETAILS 1.1 Consult Radiation Monitoring

  • Refer to Enclosure 9 for locations of required Team to determine routes and actions/components and suggested routes.

precautions to be used while performing RB Pressurization (ERT).

1.2 IF portable air compressors were 1 Start portable air compressors.

connected to RB portable compressor connections, 2 Open isolation valves for operating air THEN start air supply to RB and compressors (119 ft IB west door):

establish and maintain RB PRESS at = 2 psig (ERT/Ops).

LRV-11 _ LRV-16 LRV-1 2 LRV-1 7

_ LRV-1 3 LRV-1 8 LRV-1 4 LRV-1 9 LRV-15 LRV-20 3 _ Unlock and open LRV-36 "AIR SUPPLY TO PENETRATION 121 ISO' (119 ft B south of A MSSVs).

4 Unlock and open LRV-50 "PENETRATION 121 ISO" (119 B ft south of PZR Htr MCC 3B overhead).

5 Adjust LRV-26

  • LRV-24 BYPASS" (119 ft B south of A MSSVs) to maintain RB PRESS at 2 psig.

EM-225A Rev. 9 Page 15 of 29

ENCLOSURE 5 (Page 2 of 2)

RB PRESSURIZATION FOR HYDROGEN PUhGE (Cont'd)

ACTIONS DETAILS 1.3 - IF portable air compressors were 1 - Start portable air compressors.

connected to H2 recombiner connections, 2 Open H2 recombiner connection isolations for THEN start air supply to RB and operating air compressors (119 ft IB):

establish and maintain RB PRESS at = 2 psig (ERT/Ops).

- LRV-87 (unlock) - LRV-88 (unlock)

- LRV-89 (unlock) - LRV-90 (unlock)

- LRV-91 (unlock) _ LRV-92 (unlock)

- LRV-93 (unlock) I LRV-94 (unlock) 3 _ Adjust the compressor output to establish and maintain RB PRESS at = 2 psig.

1.4 _ WHEN RB PRESS is being maintained at 2 psig, THEN notify the Accident Assessment Team Coordinator that Enclosure 5 is complete (OPS/ERT).

EM-225A Rev. 9 Page 16 of 29

ENCLOSURE 6 PURGE RELEASE AUTHORIZATION FORM PRAF #

COMPLETED BY THE ACCIDENT ASSESSMENT TEAM:

1) Date/Time accident started: /
2) Projected Date/Time for purge start: /
3) Time after accident for purge start: (hrs) [1 minus 21
4) Error Corrected Flowrate based on time after accident (see Enclosure 10) i _ (scfm)

Completed By: Date:

COMPLETED BY THE DOSE ASSESSMENT TEAM:

Containment Atmosphere Activity (Ci/cc):

Meteorological Conditions used in projection:

Wind Direction Wind Speed Stability Class Projected purge duration = 1440 minutes (1 day)

RADDOSE-IV Projected Dose (REM) based on Error Corrected Flow rate:

Site Boundary . . 2 miles 5 miles 10 miles RADDOSE-IV Projected Curies to be released: Noble Gas _ Iodine Completed By: Date:

COMPLETED BY EMERGENCY COORDINATOR:

EOF Director notified:

EOF Director notified: Date/Time I Ensure the EOF Director has coordinated with the State and local government officials before initiating purge.

EMERGENCY COORDINATOR APPROVAL /

Sign/Date EM-225A Rev. 9 Page 17 of 29

ENCLOSURE 7 (Page 1 of 6)

PURGING RB STATUS

  • RB Purge Is Required ACTIONS DETAILS 1.1 Ensure Enclosure 2, 3, 4, and 5 of
  • Enclosure 2 complete this procedure have been completed (AAT). . Enclosure 3 complete
  • Enclosure 4 complete
  • Enclosure 5 complete 1.2 Determine required purge flow rate
  • IF H2 purge has been previously performed, (AAT/DAT). THEN use flows from previous purge.
  • - EH2 purge has NOT been previously performed, THEN refer to Enclosure 10 to determine flows:

Required Purge Flow scfm Error Corrected Flow - scfm

  • Record Error Corrected Flow on Enclosure 6.

1.3 Consult Radiation Monitoring

  • Refer to Enclosure 9 for locations of required Team to determine routes and actions/components and suggested routes.

precautions to be used while performing RB Pressurization (ERT).

1.4 WHEN Enclosure 6, Purge Release Authorization Form is complete and approved by the EC, THEN continue with this enclosure.

EM-225A Rev. 9 Page 18 of 29

ENCLOSURE 7 (Page 2 of 6)

PURGING RB (Cont'd)

STATUS EC has approved Purge Release Authorization Form, Enclosure 6 ACTIONS DETAILS 1.5 Notify the EC and the EOF Director that RB hydrogen purge is commencing (AAT).

1.6 Start RB purge Exhaust fan (OPS).

  • Start at least one RB Exhaust fan:

AHF-7A AHF-7B 1.7 IF RB purge has previously been

  • IF LRV-1 21 was previously throttled performed, THEN Open A Train isolation valves.

THEN open purge isolation valves associated with the previously LRV-70 adjusted throttle valve (OPS).

LRV-71 IF LRV-1 23 was previously throttled THEN Open B Train isolation valves.

LRV-72 LRV-73 EM-225A Rev. Page 19 of 29

ENCLOSURE 7 (Page 3 of 6)

PURGING RB (Conrd)

ACTIONS DETAILS 1.8 - IF purge has NOT previously been 1 - Record Required Purge Flow" from performed, Step 1.2 of this enclosure.

THEN establish required RB purge flow (OPS). a Required Purge Flow sfm 2 IF A Train purging is desired, THEN perform the following in order:

Open LRV-70 Open LRV-71 Throttle LRV-121 to obtain "Required Purge Flow" on flow indicator LR-82-FI (143 ft AB Ventilation Room).

Record reading from LR-82-FI scfm 3 IF B Train purging is desired, TFHEN perform the following in order:

Open LRV-72 Open LRV-73 Throttle LRV-123 to obtain "Required Purge Flow" on flow indicator LR-83-FI (143 ft AB Ventilation Room).

Record reading from LR-83-FI scfm 1.9 ___ Maintain RB PRESS constant at * - IF portable air compressors were

= 2 psig (OPS). connected to RB portable compressor connections, THEN adjust LRV-26 "AIR SUPPLY TO PENETRATION 121 CONTROL BYPASS" (119 ft lB south of A MSSVs) to maintain RB PRESS at = 2 psig.

  • - IF portable air compressors were connected to.H2 recombiner connections, THEN adjust the compressor output to maintain RB PRESS at = 2 psig.

EM-225A Rev. 9 Page 20 of 29

ENCLOSURE 7 (Page 4 of 6)

PURGING RB (Cont'd)

ACTIONS DETAILS 1.10 - WHEN all of the following exist: 1 Ensure the following valves are closed:

- RB H2 Concentration is A Train B Train

<3.5%

- EC approves termination LRV-70 _ LRV-72 LRV-71 - LRV-73 THEN stop RB purge (OPS/ERT).

2 Ensure RB exhaust fans are stopped:

AHF-7A AHF-7B 3 _ portable air compressors are connected to RB portable compressor connections, THEN close the following valves:

LRV-50 PENETRATION 121 ISO" (119 ft B south of PZR Htr MCC 3B overhead)

LRV-36

  • AIR SUPPLY TO PENETRATION 121 ISON (119 ft B south of A MSSVs) 4 IF portable air compressors are connected to H2 recombiner connections, THEN close the following valves:

l LRV-87 _ LRV-88 l LRV-89 _ LRV-90 l LRV-91 _ LRV-92 l LRV-93 LRV-94 5 - Stop portable air compressors.

1.11 Notify the Accident Assessment Team Coordinator that RB purge is secured.

EM-225A Rev. 9 Page 21 of 29

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ENCLOSURE 8 RB HYDROGEN CONCENTRATION TREND I

3.5-3-

IC 0 2 8

IC 0

Zf Il M il i I I M I I 1 1 1 I I i i l 1 x

'C 2 -

0.!

I 0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720 768 816 864 912 960 1008 Time (hrs)

EM-225A Rev. 9 Page 22 of 29

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ENCLOSURE 9 (Page 1 of 4)

ACCESS ROUTES 119' EL. INTERMEDIATE BUILDING AHF-7A/7B Bkr v LRV-87,88,89,90 LRV-11, 12,13,14,15,16,17,18,19,20 LRV-91, 92,93,94 LRV-26 and 36 EM-225A Rev. 9 Page 23 of 29

ENCLOSURE 9 (Page 2 of 4)

ACCESS ROUTES (Cont'd) 35 EL AUXILIARY BUILDING EM-225A Rev. 9 Page 24 of 29

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00X z u CL Wn 5

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ENCLOSURE 9 (Page 4 of 4)

ACCESS ROUTES (Cont'd)

ChAACOA. FSLTC I Pbe e$ ,FEke ItI 143' EL AUXILIARY BUILDING PSPTJGANS

. US U l ILXHAUSI FAW.

2S 19PiN4 FULL POOL II a~~~~~~

It~

~~~~

I( -1 1 I--.

L IM.. D (L<. IWTA a LIDCD IT hYU1 EM-225A Rev. 9 Page 26 of 29

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ENCLOSURE 10 CONTINUOUS PURGE FLOW RATES AFTER A LOCA 60.0 55.0

'-7--

50.0 45.0

%E40.0 Error Corrected Flowrate (Required Purge Flow Plus Uncertlanty) 0 2! 35.0

  • 30.0 0.

IL Required Purge Flowrate M 25.0-20.0 15.0 10.0 5.0 350 550 750 950 1150 1350 1550 1750 1950 2150 2350 2550 2750 2950 Time After Accident (hrs)

EM-225A Rev. 9 Page 27 of 29

ENCLOSURE 11 HYDROGEN PURGE SYSTEM FLOW DIAGRAM COPt ESSOtMI tc (D 4 REACTOR 87 Am DM*MDa l I us-e; ' Asv-03 ,-w- + T EM-225A Rev. 9 Page 28 of 29

Summary of Changes (PRR 99315)

SECTION CHANGE Enc. 5 (Steps Added Unlock per LAR 274 (NTM # 97679 #2 and PRR 99315)) (Reference LRV-1.2 & 1.3) 36, -88, -90, -92, -94)

Step 4.2 Changed step 4.2 third bullet to reference RMT (Radiation Monitoring Team) vs DAT (Dose Assessment Team) - the wrong team was reference. editorial correction Step 3.2.1, Changed "prior to" to "before" - editorial correction 3.3.7 and EM-225A Rev. 9 Page 29 of 29

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