ML062440414

Transmittal of Tracer Gas Test Report

ML062440414
Person / Time
Site:	Millstone
Issue date:	09/01/2006
From:	Gerald Bichof Dominion, Dominion Nuclear Connecticut
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
06-709, GL-03-001
Download: ML062440414 (29)

Text

Dominion Nuclear Connecticut, Inc.

5000 Dominion Boulevard, Glen Allen, Virginia 2.3060 U'ch Address: www.dom.com September 1, 2006 U. S. Nuclear Regulatory Commission Attention: Document Control Desk One White Flint North 1 1 555 Rockville Pike Rockville, MD 20852-2738 Serial No.06-709 NL&OS/PRW RO Docket No.

50-336 License No.

DPR-65 DOMINION NUCLEAR CONNECTICUT, INC.

MILLSTONE POWER STATION UNIT 2 TRANSMITTAL OF TRACER GAS TEST REPORT In a conference call of July 18, 2006, the NRC requested that Dominion Nuclear Connecticut, Inc. (DNC) provide the latest tracer gas test report for Millstone Power Station Unit 2 (MPS2). The test report was requested in order that the NRC staff can complete its evaluation of DNC's response for Generic Letter 2003-01, "Control Room Habitability," for MPS2.

The attachment to this letter provides the requested test report.

Should you require further information or have any questions regarding this submittal, please contact Mr. Paul R. Willoug hby at (804) 273-3572.

Very truly yours, Gerald T. Bischof Vice President - Nuclear Engineering

Attachment:

Surveillance Procedure SP21205, Control Room In-Leakage Verification - Continuous Sampling Method Commitments in this letter: None

Serial No.06-709 Docket No. 50-336 Tracer Gas Test Report Page 2 of 2 cc:

U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1 41 5 V. Nerses Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint North 1 1 555 Rockville Pike Mail Stop 8 C2 Rockville, MD 20852-2738 Mr. S. M. Schneider NRC Senior Resident Inspector Millstone Power Station

Serial No.06-709 Docket No. 50-336 ATTACHMENT TRANSMITTAL OF TRACER GAS TESTING REPORT SURVEILLANCE PROCEDURE SP 21205 CONTROL ROOM IN-LEAKAGE VERIFICATION-CONTINUOUS SAMPLING METHOD DOMINION NUCLEAR CONNECTICUT. INC.

MILLSTONE POWER STATION UNIT 2

411 6/05 Approval Date 411 6/05 Effective Date Control Room In - Leakage Verification - Continuous Sampling Method I SURVEILLANCE INFORMATION I 1 Relerence Procedure No.:

I Form

Title:

1 SP 21205 Control Room In-Leakage Verification - Continuous Sampling Method Applicable Technical Specification(s):

I Frequency:

On File At Millstone Power Station 4.7.6.1.e.3 Applicable &fade:

Modes 1 through 6 Scheduled Date:

+ 2 l d K Refueling (at least once every 18 months)

/

SP 21205 -002 Rev. 004 -02 Page 1 of 20 TECH SPEC MAINTENANCE SYSTEM NON-TECH SPEC SURVEILLANCE RESTORATION ALIGNMENT SURVEIWCE 0 IS, TESTING SIGNATURES 1

TEST EQUIPMENT Step No.

4.3.5.f.

TYPE OF TEST EQUIPMENT Sulfur Hexaflouride Tracer Gas QA NUMBER ATE - 0 0 2 d

Control Room In-Leakage Verification - Continuous Sampling Method DATA EVALUATION I DATA EVALUATION TIS ACCEPTANCE Step No.

Air In-Leakage CRITERIA 4.4.14.q-Facility 1 Air In-Leakage Rate I

Less than 120 scfm i5-15.q 1 Facility 2 Air in-Leakage Rate I Less than 120 scfm RESULTS SAT

[BL UNSAT SAT UNSAT I

ACCEPTANCE S t e ~

No.

Air In - Leakage CRITERIA RESULTS Air In-Leakage Rate Less than 120 scfm A

UNSAT SP 21205 -002 Rev. 004 - 02 Page 2 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 1 TRACER DILUTION TEST 4.4.2 SF^ Concentration:

i l e ~ %

Injection Concentration: 3 t 3< -

P P ~

EastIWest Battery Rooms I

Step No.: 4.4.5 VENTILATION ALIGNMENT MATRIX FAN F-34A F-34B F-34C F-142 F-52 F-26 F-16 F-25A F-25B F-17 EastIWest Battery Rooms I

F-19 CABLE VAULT RECIRC Cable Vault 1 FAN I

e DESCRIPTION MAIN EXHAUST - A MAIN EXHAUST - B MAIN EXHAUST - C EAST 480V RM EXHST EAST 480V RM SPLY 480V RM AUX EXHST AUX BLDG SUPPLY EBFS FAN - A EBFS FAN - B NON-RAD WST SPLY s

- F-20 I SFP SUPPLY FAN I Spent Fuel Pool Area l

I I

I I

I AREASERVED Auxiliary Building Auxiliary Building Auxiliary Building East 480V Room East 480V Room East 480V Room Auxiliary Building Fuel Handling Bldg (AEAS Mode Only)

Fuel Handling Bldg (AEAS Mode Only)

Cable Vault and East 480V Room F-135 AUX BLDG ELEVATOR EQUIPMENT ROOM VENTILATION F161B I

BLDG 1101105 RETURN Bldg 110/105 AIR FROM ACU-6 I

ON / OFF oC/

O F F 6+y U p w

Ow w

Ot/

6y Qv F161A BLDG 1101105 SUPPLY AIR FROM ACU-6 F162 I

BLDG 1101105 ROOF Bldg 1101105 EXHAUST FAN I

Aux Bldg Elevator Equipment Room I MP1 Bathroom oiJ Bldg 1101105

/

SP 21205-002 Rev. 004-02 Page 3 of 20 LW

Control Room In-Leakage Verification - Continuous Sampling Method Step No.: 4.4.5 FAN I

DESCRIPTION MP1 CABLE VAULT SMOKE EXHAUST MP1 CABLE VAULT SMOKE EXHAUST AREASERVED I ON /OFF I

MP1 Cable Vault I OFF MP1 Cable Vault OFF 4.4.1 0 Background Reading:

6' PPm 4.4.12 Injection Duration:

rgo sec

/

SP 21205 -002 Rev. 004-02 Page 4 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 1 TRACER DILUTION TEST Step No.: 4.4.14.d.2); 4.4.14.f.2)

Air Sample Location(s):

OLD COMPUTER ROOM CONTROL ROOM CLOSET TO CABLE VAULT TO UNIT 1 CONTROL RM.

CONTROL ROOM A.C. ROOM

• PDI 8003 located in this room EAST 480V HALLWAY ROOM SP 21205-002 Rev. 004-02 Page 5 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 1 TRACER DILUTION TEST Air Sam ling Data Sheet (sleet 1 of 2)

Step No.: 4.4.14.q.; 4.4.14.1.

Air In-Leakage Rate Equation c t 1

• In -

1 = -

L = In-leakage rate c fm At co I = Air changes per minute llmin At = (t - to) Time interval minutes L = V

• I V = Control Room volume ft3 Ct = Concentration at time PPm Q = Concentration at time zero ppm Air Sampling Location: See fi (

a Data Rarnrd-nr t1-i.d Rv -

Date.

On File At Millstone Power Station,

q4/-

O$

/

V SP 21205-002 Rev. 004 - 02 P a ~ e 6 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 1 TRACER DILUTION TEST Air Sampling Data Sheet (Sheet 2 of 2)

Step No.: 4.4.1 4.0.

Air Change Rate Equation / Calculation Air Change Rate = c2 - Cl (These values are taken from plot.

C1 and C2 values are natural logarithms of concentration Ct at different times during testing, as identifed by the plot of In Ct for straight line.)

Air In-Leakage Rate

= Air Change Rate

• 60,292 ft3

= 0 00 1 6 72-

• 60,292 ft3

=

/ D O, % /

scfm (60,292 ft3 equals Control Room volume minus Control Room dead space volume) 1

alculaled By:

Dele:

On File At Millstone Power Station I g-z/-65#

SP 21205 -002 Rev. 004 - 02 Page 7 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 1 TRACER DILUTION TEST 4.4.1 4.i. 1 Door No.

AP: +o,H{ I Door No. [ZI AP: to, 01, I Door No. 15] AP:

62 /

I Door No.

APT&

I Door No. /3J AP::

ac 6 I Door No.

AP: -k. 6 11 L

' 2 PDI 8003 AP: '

0,05 Comments:

SP 21205-002 Rev. 004 - 02 Page 8 of 20

Control Room In-Leakage Verification - Continuous Sampling Method 4.5.2 SF6 Concentration:

i 0 Injection Concentration: 2 ppm Step No.: 4.5.5 I

FAN DESCRIPTION AREASERVED I ON I OFF F-34A I MAIN EXHAUST - A I Auxiliary Building I

I F-34B I MAIN EXHAUST - B F-34C MAIN EXHAUST - C F-142 EAST 480V RM EXHST F-52 EAST 480V RM SPLY F-26 480V RM AUX EXHST F-16 AUX BLDG SUPPLY F-25A EBFS FAN - A F-25B EBFS FAN - B F-17 NON-RAD WST SPLY F-20 SFP SUPPLY FAN F-1 12A EASTtWEST BATTERY EXHAUST FANS F-112B EASTNEST BA'ITERY EXHAUST FANS F-19 CABLE VAULT RECIRC FAN Eastmest Battery Rooms O F F Eastmest Battery Rooms Cable Vault o d F-135 AUX BLDG ELEVATOR Aux Bldg Elevator Equipment Room EQUIPMENT ROOM VENTILATION F161A F161B F162 SP 21205-002 Rev. 004 -02 Page 9 of 20 BLDG 1101105 SUPPLY AIR FROM ACU-6 BLDG 1101105 RETURN AIR FROM ACU-6 HVT-10A Bldg 1101105 on/

Bldg 1101105 BLDG 1101105 ROOF EXHAUST FAN Bldg 1101105 0 Ff MP1 BATHROOM MP1 Bathroom I

EXHAUST F f I

Control Room In - Leakage Verification - Continuous Sampling Method Step No.: 4.5.5 VENTILATION ALIGNMENT MATRIX I

FAN HVE-22 DESCRIPTION AREASERVED ON 1 OFF MP1 CABLE VAULT MP1 Cable Vault SMOKE EXHAUST OFF MP1 CABLE VAULT MP1 Cable Vault SMOKE EXHAUST 6f.f SP 21205-002 Rev. 004 - 02 Pane 10 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 2 TRACER DILUTION TEST Step No.: 4.5.15.d.2); 4.5.15.f.2)

Air Sample Location(s):

OLD COMPUTER ROOM CLOSET TO CABLE VAULT TO UNIT 1 CONTROL RM.

CONTROL ROOM CONTROL ROOM A.C. ROOM EAST 480V ROOM

• PDI 8003 located in this room HALLWAY

/

SP 21205 -002 Rev. 004-02 Page 11 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 2 TRACER DILUTION TEST Air Sampling Data Sheet (Sheet 1 of 2) step No.: 4.5.15.g.; 4.5.15.1.

Air 1nZeakage Rate Equation c t 1 *In -

I = -

L = In-leakage rate cfm At Co I = Air changes per minute l/min At = (t - to) Time interval minutes L = V

• I V = Control Room volume ft3 Ct = Concentration at time PPm

(& = Concentration at time zero ppm Air Sampling Location:

5 ee flq d I

Time Conc c t Air Change In - Leakage In Ct (Min)

(ct) ln -

1 Rate (I)

Rate (L)

(plotted) ct-1 SP 21205 -002 Rev. 004-02 Pane 12 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 2 TRACER DILUTION TEST Air Sampling Data Sheet (Sheet 2 of 2)

Air Change Rate Equation 1 Calculation Air Change Rate = 1 1 t1 1 Air In-Leakage Rate

= Air Change Rate

• 60,292 ft3

= -0t0017L

• 60,292ft3

= /03t 6 4 scfm (These values are taken from plot.

C1 and C2 values are natural logarithms of concentration Ct at different times during testing, as identifed by the plot of In Ct for straight line.)

(60,292 ft3 equals Control Room volume minus Control Room dead space volume) n

alculated By.

I On File At Millstone Power Station Dale:

w r ----

+-~/-or

/

SP 21205 -002 Rev. 004-02 Page 13 of 20

Control Room In-Leakage Verification - Continuous Sampling Method FACILITY 2 TRACER DILUTION TEST 4.5.15.i.

Door No.

AP:% 07f Door No.

AP: $02 1

Door No.

AP:? ad19 Comments:

SP 21205 -002 Rev. 004-02 Page 14 of 20

Control Room In-Leakage Verification - Continuous Sampling Method DUAL FILTER FAN DILUTION TEST 4.6.2 SF6 Concentration:

LOO Injection Concentration: 2 of PPm 4.6.4 CRAC Facility Selected for Dual Filter Fan Air In-Leakage Test: Fuci / r / r 2 I

Step No.: 4.6.8 VENTILATION ALIGNMENT MATRIX FAN I

DESCRIPTION I

AREASERVED I ON I OFF F-34A MAIN EXHAUST - A Auxiliary Building I ofl F-34B I MAIN EXHAUST - B I Auxiliary Building I O W F-34C I MAIN EXHAUST - C I ~wiliary Building F-142 I EAST 480V RM EXHST I East 480V Room 1 0d F-52 1 EAST 480V RM SPLY F-26 1480V RM AUX EXHST F-16 I AUX BLDG SUPPLY F-17 NON-RAD WST SPLY F-20 SFP SUPPLY FAN F-1 12A EASTtWEST BATTERY EXHAUST FANS East 480V Room O N East 480V Room O N Auxiliary Building on/

Fuel Handling Bldg (AEAS Mode Only) 0 IL)

Fuel Handling Bldg (AEAS Mode Only)

O~

Cable Vault and East 480V Room 0d Spent Fuel Pool Area O G East~West Battery Rooms OFF F-112B EASTIWEST BATTERY EasttWest Battery Rooms EXHAUST FANS o f f F-19 CABLE VAULT RECIRC Cable Vault BU -

FAN F-135 AUX BLDG ELEVATOR Aux Bldg Elevator Equipment Room EQUIPMENT ROOM VENTILATION o"'

F161A BLDG 1101105 SUPPLY Bldg 110/105 AIR FROM ACU-6

. B/L' F161B BLDG 1 101105 RETURN Bldg 1 101105 AIR FROM ACU-6 SP 21205 -002 Rev. 004-02 Pane 15 of 20

Control Room In-Leakage Verification - Continuous Sampling Method Step No.: 4.6.8 VENTILATION ALIGNMENT MATRIX FAN DESCRIPTION AREA SERVED BLDG 1101105 ROOF Bldg 1101105 EXHAUST FAN HVT-1OA MP1 BATHROOM I E m u w MP1 CABLE VAULT I SMOKE EXHAUST SMOKE EXHAUST MP1 Bathroom MP1 Cable Vault MP1 Cable Vault ON / OFF 4.6.1 5 Background Reading: $ 2 I 0 8-PPm SP 21205 -002 Rev. 004 - 02 Page 16 of 20

Control Room In-Leakage Verification - Continuous Sampling Method DUAL FILTER FAN DILUTION TEST OLD COMPUTER ROOM CONTROL ROOM CLOSET TO CABLE VAULT

+

CONTROL ROOM 7

BOUNDARY TO UNIT 1 CONTROL RM.

I 1

CONTROL ROOM A.C. ROOM EAST 480V HALLWAY ROOM t-

• PD18003 located in this room 1

I SP 21205-002 Rev. 004 -02 Page 17 of 20

Control Room In-Leakage Verification - Continuous Sampling Method DUAL FILTER FAN DILUTION TEST Air Sampling Data Sheet (Sheet 1 of 2)

Step No.: 4.6.20.d.; 4.6.20.i.

Air In-Leakage Rate Equation 1 = -

c t

• I n -

L = In-leakage rate cfm At c o I = Air changes per minute llmin At = (t - to) Time interval minutes L = V

• I V = Control Room volume ft3 Ct = Concentration at time PPm C& = Concentration at time zero ppm Air Sampling Location:, +e flq fl I

Time Conc Air Change In - Leakage In Ct (Min)

(cd Rate (I)

Rate (L)

(plotted)

Control Room In-Leakage Verification - Continuous Sampling Method DUAL FILTER FAN DILUTION TEST Air Sam ling Data Sheet (SReet 2 of 2)

Step No.: 4.6.20.1.

Air Change Rate Equation / Calculation Air Change Rate = c2 - Cl Air In-Leakage Rate

= Air Change Rate

• 60,292 ft3

=

O l O O & l

• 60,292 ft3

= 107, I J scfm (These values are taken from plot.

C1 and C2 values are natural logarithms of concentration Ct at different times during testing, as identifed by the plot of In Ct for straight line.)

(60,292 ft3 equals Control Room volume minus Control Room dead space volume)

I SP 21205 -002 Rev. 004- 02 Paee 19 of 20

Control Room In-Leakage Verification - Continuous Sampling Method DUAL FILTER FAN DILUTION TEST step No.

Door No. El AP: 4; ~9 I Door No.

AP: -. & I Door No. [m AP: *. 0 I2 Comments:

SP 21205 - 002 Rev. 004-02 Page 20 of 20

1(1)=

10 C(l)=

0 717841 Change Rate

1. VALUE1 Volume 60286 Inleakage #VALUE1 0

10 20 30 40 50 60 70 80 90 t(2)=

100 C(2)=

1. VALUE1 I Time Delta 1 90 Delt C

1. VALUE!

/

Installation and Removal of Temporary Modification PTM2 0008 Wire Jumper in NF26 (Sheet 1 of 3)

Installation of Wire Jum~er in NF26.

I NOTE I

To Maintain F17 and F26 during the testing, a jumper must be installed to I

defeat TS-8850 which normally starts these fans at 75'E I

I On File At SM/US Authorization to install Temp Modo Millstone power Station 9, Signaturf Operations IF jumper will be installed for more than one shift, DOCUMENT

@ S m p mod in turn aver loe.

Refer To OP 2315B, "Non-Radwaste Ventilation System," and REMOVE F17 and F26 from service.

/ -

OPEN breaker B41Al1, supply breaker for F26.

DIRECT I&C to install #14AWG minimum SIS wire jumper in NF26 across terminal 6 and terminal 7 (wires 22 and 12 respectively).

I Actions I

Performer I

Dual Verifier 1

PLACE jumper across Terminal 6 and on File At On File At Terminal 7 (wires 22 and 12 respectively)

Millstone Power Station Millstone power Station

. /

PA Operations f CLOSE breaker B41Al1, supply breaker for F26.

43, L

"\\

1 c 4%,D3c OnFikAt Millstone Power Station J

SP 21205 Rev. 008 - 03 61 of 63

I I

Installation and Removal of Temporary Modification PTM2 0008 Wire Jumper in NF26 (Sheet 2 of 3)

Removal of Wire Jumper in NF26.

On File At SMJUS Authorization to remove Temp Mod - Millstone Power Station -

Y / B ~

05 Signature Date Refer To OP 2315B, "Non-Radwaste Ventilation System," and REMOVE F17 and F26 from service.

I

2.

OPEN breaker B41Al1, supply breaker for F26.

3.

DIRECT I&C to remove #14AWG minimum SIS wire jumper in NF26 across terminal 6 and terminal 7 (wires 22 and 12 respectively).

I Actions I

Performer I

Dual Verifier I

Operations

4.

CLOSE breaker B41Al1, supply breaker for F26.

REMOVE jumper across Terminal 6 and Terminal 7 (wires 22 and 12 respectively)

Level of Use SP 21205 Reference

' 1 Rev.

62 of 008 63 - 03 On File ~t Millstone power Station On File ~t Millstone Power Station Installation and Removal of Temporary Modification PTM2 0008 Wire Jumper in NF26 (Sheet 3 of 3) a SP 21205 Rev. 008-03 63 of 63