ML030420345

Emergency Plan Implementing Procedure EM-225A, Post Accident RB Hydrogen Control

ML030420345
Person / Time
Site:	Crystal River
Issue date:	02/04/2003
From:	Progress Energy Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML030420345 (32)

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NRC NRC CR3 Department :

CR3-01242 / MAIL CODE: N/A DC DESK CR3DOCSVCS Attention: DOCUMENT SERVICES -

SA2A FLORIDA POWER CORPORATION CRYSTAL RIVER COMPLEX 15760 WEST POWERLINE STREET CRYSTAL RIVER State:FL Postal Code: 34428-6708 UNITED STATES 02/04/03 14:05 Transmittal Group Id:0000007720 000096284

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Media Copiesj 0001 CR3 POM EMG EM0225A ACTIVE 008 H

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&T Progress Energy I

Information Use PROGRESS ENERGY CRYSTAL RIVER UNIT 3 PLANT OPERATING MANUAL EMERGENCY PLAN IMPLEMENTING PROCEDURE EM-225A POST ACCIDENT RB HYDROGEN CONTROL Page 1 of 31 P

EM-225A Rev. 8

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

3

2.0 REFERENCES

3 2.1 Developm ental References......................................................................................

3 3.0 PERSONNEL INDOCTRINATION.....................................................................................

4 3.1 Definitions......................................................................................................................

4 3.2 Responsibilities.........................................................................................................

4 3.3 Lim its and Precautions.............................................................................................

5 4.0 INSTRUCTIONS......................................................................................................................

6 ENCLOSURES 1

Hydrogen Monitoring.............................................................................................................

7 2

Initial Preparations for Purging.................................................................................................

9 3

Portable Com pressor Installation.9................................................................................................. 9 4

Prerequisite Field Actions.........................................................................................................

9 5

RB Pressurization for Hydrogen Purge...................................................................................

9 6

Purge Release Authorization Form...........................................................................................

9 7

Purging RB....................................................................................................................................

9 8

RB Hydrogen Concentration Trend..........................................................................................

9 9

Access Routes..............................................................................................................................

9 10 Continuous Purge Flow Rates After a LOCA..........................................................................

9 11 Hydrogen Purge System Flow Diagram...................................................................................

9 EM-225A Rev. 8 Page 2 of 31 T

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" Page 3 of 31 T

Rev. 8 EM-225A

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 prior to initiation (Enclosure 6).

Ensures coordination with off-site agencies prior to 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 Emergency 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.

Page 4 of 31 EM-225A Rev. 8

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 < 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 prior to 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.

Page 5 of 31 Rev. 8 EM-225A

4.0 INSTRUCTIONS NOTE 1, "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 > 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.

"* DAT/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 _> 3.3%,

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

4.5 WHEN RB hydrogen concentration >_ 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 > 3.5% for _> 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> RB H2 concentration _> 3.5% and off shore winds exist RB H2 concentration > 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.

Page 6 of 31 EM-225A Rev. 8

ENCLOSURE 1 (Page 1 of 2)

HYDROGEN MONITORING ACTIONS DETAILS 1.1 Ensure one H2 analyzer is aligned and placed in service (Ops).

Ensure applicable steps of EOP-14,, PPO Post Event Actions, have been completed for H2 analyzers.

1.2 Plot RB H2 concentration on

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

(AAT).

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

RECALL Project when RB H2 concentration will exceed action levels of this procedure (AAT).

Use H2 concentration plotted on of this procedure.

• _Extrapolate to estimate time when H2 concentration will reach procedure action levels.

Action Level Date Time H2> 1%

H2 > 3.3%

H2 Z-3.4%

H2 >- 3.5%

H2 > 3.6%

Page 7 of 31 1.3 Rev. 8 EM-225A

HYDROGEN MONITORING (Cont'd)

ENCLOSURE 1 (Page 2 of 2)

DETAILS 1.4 IF at anytime H2 concentration is

_> an action level of this procedure, THEN immediately notify the Accident Assessment Team Coordinator (AAT).

Action levels based on RB H2 concentrations.

Action Level Required Action H2 -> 1%

See step 4.2 H2 ý 3.3%

See step 4.4 H2-2:3.4%

See step 4.5 H2-3.5%

See step 4.6

__Continue monitoring RB H2 concentration (AAT).

Plot RB H2 concentration on Enclosure 8 of 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 />.

Page 8 of 31 ACTIONS 1.5 EM-225A Rev. 8

INITIAL PREPARATIONS FOR PURGING ENCLOSURE 2 (Page 1 of 2)

SSTATUS RB H-2 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 < 150 0F.

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

Page 9 of 31 Rev. 8 EM-225A

PREPARATIONS FOR RB HYDROGEN PURGE (Cont'd)

ACTIONS ENCLOSURE 2 (Page 2 of 2)

DETAILS Monitor meteorological conditions to predict off-shore wind cycle (DAT).

Off-shore winds originate from NNE to SE sectors (011.20 to 146.30).

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 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).

Page 10 of 31 1.5 EM-225A Rev. 8

PORTABLE COMPRESSOR INSTALLATION ENCLOSURE 3 (Page 1 of 2)

STATUS

"* Purge Compressors Are On Site

"* Hydrogen Concentration >1%

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 (ERT).

S__DO NOT open LRVs at this time.

• ___ Indicate LRVs to which portable air compressors are connected.

S__Preferred - RB portable compressor connections (119 ft IB outside west wall):

_Alternate - H2 recombiner connections (119 ft IB outside west wall):

(adapters in stores - CAT ID # 0001260356)

Page 11 of 31 LRV-1 1 LRV-1 6 LRV-1 2 LRV-1 7 LRV-13 LRV-1 8 LRV-1 4 LRV-1 9 LRV-1 5 LRV-20 LRV-92 (Pen 125)

LRV-90 (Pen 121)

LRV-94 (Pen 125)

LRV-88 (Pen 122)

EM-225A Rev. 8

PORTABLE COMPRESSOR INSTALLATION (Cont'd)

ACTIONS ENCLOSURE 3 (Page 2 of 2)

DETAILS 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.

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

Page 12 of 31 1.3 1.5 EM-225A Rev. 8

ENCLOSURE 4 (Page 1 of 2)

PREREQUISITE FIELD ACTIONS

• • --J:STATUS RB H2 Concentration >_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 IB East Door)

AHF-7A, Ventilation MCC 3A-1OC

° _

AHF-7B, Ventilation MCC 3B-9C Open RB exhaust dampers for emergency operation (OPS).

Select AHV-77 to the "EMERGENCY OPERATION OF AHD-95, AHD-96, AND AHD-94" position.

(143 ft AB Ventilation Equipment Area, HVAC-1 3)

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

(143 ft AB Ventilation Equipment Area, HVAC-1 3)

Page 13 of 31 1.3 Rev. 8 EM-225A

PREREQUISITE FIELD ACTIONS (Cont'd)

ENCLOSURE 4 (Page 2 of 2)

DETAILS Ensure RM-A1 is in service (OPS/DAT).

1.4 1.5 Notify Repairs Coordinator to CONCURRENTLY PERFORM MP-815, obtain and install flow.

Installation of Post Accident H2 Purge Flow instrumentation (ERT).

Instruments.

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

Page 14 of 31

• Ensure RM-A1 pump is running with path to and from pump (143 ft AB).

• Ensure RM-A1 monitors have power aligned.

• Ensure the following MCB annunciator links are closed:

1712 1 3

_1714 Adjust RM-A1 gas channel "HIGH" alarm setting potentiometer to maximum (clockwise).

Ensure LMH controller associated with RM-A1 is in "AUTO".

ACTIONS 1.6 EM-225A Rev. 8

ENCLOSURE 5 (Page 1 of 2)

RB PRESSURIZATION FOR HYDROGEN PURGE STATUS

"* RB H2 Concentration >_ 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-1 1

LRV-1 6

_LRV-12 LRV-17 LRV-1 3 LRV-1 8 LRV-1 4 LRV-1 9 LRV-1 5 LRV-20 3

Open LRV-36 "AIR SUPPLY TO PENETRATION 121 ISO" (119 ft IB south of A MSSVs).

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

5 Adjust LRV-26 "LRV-24 BYPASS" (119 ft lB south of A MSSVs) to maintain RB PRESS at = 2 psig.

Page 15 of 31 EM-225A Rev. 8

RB PRESSURIZATION FOR HYDROGEN PURGE (Cont'd)

ACTIONS ENCLOSURE 5 (Page 2 of 2)

DETAILS IF portable air compressors were connected to H2 recombiner connections, THEN start air supply to RB and establish and maintain RB PRESS at = 2 psig (ERT/Ops).

1 __

Start portable air compressors.

2 Open H2 recombiner connection isolations for operating air compressors (119 ft IB):

_LRV-87 (unlock)

LRV-88 LRV-89 (unlock)

LRV-90

_LRV-91 (unlock)

LRV-92

_LRV-93 (unlock)

LRV-94 3

Adjust the compressor output to establish and maintain RB PRESS at = 2 psig.

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

Page 16 of 31 1.4 1.3 EM-225A Rev. 8

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 2]

4) Error Corrected Flowrate based on time after accident (see Enclosure 10) _(scfm)

Completed By:

Date:

COMPLETED BY THE DOSE ASSESSMENT TEAM:

Containment Atmosphere Activity (liCi/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

/

Ensure the EOF Director has coordinated with the State and local government officials prior to initiating purge.

EMERGENCY COORDINATOR APPROVAL I

Sign/Date Page 17 of 31 COMPLETED BY EMERGENCY COORDINATOR:

EM-225A Rev. 8

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 o

-Enclosure 2 complete this procedure have been completed (AAT).

• complete

• complete

• complete 1.2 Determine required purge flow rate o

IF H2 purge has been previously performed, (AAT/DAT).

THEN use flows from previous purge.

e IF H2 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.

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).

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

Page 18 of 31 1.4 EM-225A Rev. 8

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).

0 Start at least one RB Exhaust fan:

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

• IF LRV-121 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-123 was previously throttled THEN Open B Train isolation valves.

LRV-72 LRV-73 Page 19 of 31 EM-225A Rev. 8

ENCLOSURE 7 (Page 3 of 6)

PURGING RB (Cont'd)

ACTIONS 1.8 IF purge has NOT previously been performed, THEN establish required RB purge flow (OPS).

DETAILS 1 __

Record "Required Purge Flow" from Step 1.2 of this enclosure.

• Required Purge Flow scfm 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, THEN perform the following in order:

-Open LRV-72

-Open LRV-73 Throttle LRV-1 23 to obtain "Required Purge Flow" on flow indicator LR-83-FI (143 ft AB Ventilation Room).

__Record reading from LR-83-FI scfm Page 20 of 31 Rev. 8 EM-225A

ENCLOSURE 7 (Page 4 of 6)

PURGING RB (Cont'd)

DETAILS 1.9 Maintain RB PRESS constant at

= 2 psig (OPS).

IF portable air compressors were connected to RB portable compressor connections, THEN adjust LRV-26 "AIR SUPPLY TO PENETRATION 121 CONTROL BYPASS" (119 ft IB 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.

Page 21 of 31 ACTIONS EM-225A Rev. 8

ACTIONS PURGING RB (Cont'd) 1.10 WHEN all of the following exist:

-RB H2 Concentration is

< 3.5%

-EC approves termination THEN stop RB purge (OPS/ERT).

ENCLOSURE 7 (Page 5 of 6)

DETAILS 1 Ensure the following valves are closed:

A Train B Train LRV-70 LRV-72

_LRV-71 LRV-73 2 Ensure RB exhaust fans are stopped:

AHF-7A AHF-7B 3

IF portable air compressors are connected to RB portable compressor connections, THEN close the following valves:

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

LRV-36 "AIR SUPPLY TO PENETRATION 121 ISO" (119 ft lB south of A MSSVs) 4 IF portable air compressors are connected to H2 recombiner connections, THEN close the following valves:

LRV-87 LRV-88

_LRV-89 LRV-90 LRV LRV-92 LRV-93 LRV-94 5

Stop portable air compressors.

Page 22 of 31 EM-225A Rev. 8

ENCLOSURE 7 (Page 6 of 6)

PURGING RB (Cont'd)

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

Page 23 of 31 EM-225A Rev. 8

(

(f ENCLOSURE 8 RB HYDROGEN CONCENTRATION TREND II I

I I I III I

II 111 11 11 1

111 I11 H Ii Ili III1 1111tiI IH II !! I I l 11 1111 I 'M ill I 'I I I 111 M I M 1I II III I I!

48 96 144 192 240 288 336 384 432 480 528 576 624 Time (hrs) 672 720 768 EM-225A

(

4 35 3

2.5 0

C 02

• 1.5 crr 1-05 0

0 816 864 912 960 1008 I I HIM

--- ---- Ali Il L" I 1 1.1 L...

mill, IIIIIIIIIIIIIIIIIIIIIIII11im HIM I

I IIIIIII H IM Hill IIII I I I LL H 11 1 1 1 11 JALLL Tr' T Ai

_LLL M IL I 1111 _W:

Hill I I I I 7TTFF1 11 HHHHH! I I! H I I I! I I! I! I I H I! I M I M M1111111 I I I I I! I I I! I! I! I! I! I! I MI 11111111111! 11111111111 !11

........................................1.ý.......

I I

I I

I I

I I

I I

I I I I I I

I

............I

-. 11.111.1 HILLL i l l ill H IM 1111 1 11 1 11 1 1 1 1 1 1 11 11 11 1 1 11 111 1 11 1 1 11 I

Page 24 of 31 Rev. 8

ENCLOSURE 9 (Page 1 of 4)

ACCESS ROUTES 119' EL. INTERMEDIATE BUILDING AHF-7At7B Bkr '

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 Page 25 of 31 EM-225A Rev. 8

ENCLOSURE 9 (Page 2 of 4)

ACCESS ROUTES (Cont'd)

V5' EL AUXILIARY BUILDING Page 26 of 31 EM-225A Rev. 8

ENCLOSURE 9 (Page 3 of 4)

ACCESS ROUTES (Cont'd) 119' EL. AUXILIARY BUILDING LILW Page 27 of 31 EM-225A Rev. 8

C ACCESS ROUTES (Cont'd)

PU8GE EXHAUST LAIAUSI FANS cD II 1111 143' EL. AUXILIARY BUILDING 0

Page 28 of 31 EM-225A

(

ENCLOSURE 9,

(Page 4 of 4)

_, AUX OLD MINW AtE Rev. 8

• t

C CONTINUOUS PURGE FLOW RATES AFTER A LOCA ENCLOSURE 10Q, 750 950 1150 1350 60.0 55.0 500 45 0

-t E 400

'* 350 0

S300

a.

M 25.0 cc 200 150 10.0 1550 1750

, Required Purge Flowrate 1950 2150 2350 2550 2750 2950 Time After Accident (hrs)

Page 29 of 31

(,

Error Corrected Flowrate (Required Purge Flow Plus Uncertianty) 504 350 550 Rev. 8 EM-225A

• (

(

I ENCLOSURE 11 *,

HYDROGEN PURGE SYSTEM FLOW DIAGRAM Rl~r'*"o HiFOR HI CMR RESOR CRc BR CCI"8iINER CVMPRESECO A*D REACTOR 41 VIA___I____I____II_____IVIIIIIII/___

BUILDING H,

I-R

• -8

.MAK'EUP T

aRV8 AIR DAMPER PEN0E122 AI-7 LRV9V-LAN 7

VENT Page 30 of 31 EM-225A Rev. 8

1 Summary of Changes Page 31 of 31 SECTION CHANGE 1.0 Changed the coversheet to reflect the change to Progress Energy 4.0 Changed action words to all caps to conform to writer guide.

Changed FIMIS # to CAT ID Number for PassPort implementation. (Ref NTM Step 1.2 53999/17)

Changed the details to reflect the labeling of HVAC-13, HVAC Control Cabinet 13.

step 1.3 (Ref NCR 73431) 0 Revised required and error corrected purge flow rates to reflect changes in calc M 85-1004 revision due power upgrade from 2544 to 2568 MWth. (Ref. NTM 73800)

EM-225A Rev. 8