ML20091A991

Revised Procedure 4000, Containment Bldg Pressure Test

ML20091A991
Person / Time
Site:	Neely Research Reactor
Issue date:	04/19/1984
From:	Neely Research Reactor, ATLANTA, GA
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ML20091A948	List: ML20091A955 ML20091A957 ML20091A991
References
4000, NUDOCS 8405300151
Download: ML20091A991 (19)

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,s' GEOfGIA TECH RESEARC11 REACTOR Chapter Procedure 4000 6 Approved 3-10-72 Maintenance CONTAINMENT BUILDItG PRESSURE TEST Latest Rev. 4-19-84

& Testing Page 1 of 19 Objective Month and Year The objective of this test is to accertain the ability of the building containment nystem to withstand an internal pressure of 2 psig i and to measure the rate at which leakage occurs f rom the building.

I. Required Equirrnent and/or Material Initial Date_

A. Building Test

1. Air Filter cartridges, 10 micron 2..Two twenty and two eighty gallon reference tanks

3. Tubing and fittings for reference tank system

4. Recording Hygrothermograph (7 day) -

5. Recorder'and chart for 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (3 day) run with eight iron-constantan (IC) thermocouples and wire lead.

6. 150-200 cfm air compressor

7. Known leak rotameter (0-60 scfh)

8. Soap solution or a " leak check" product

9. Light in pipe chase at test panel

-(equipment room side)

10. Signs. (airlock and visitor corridor)

11. Scaffolding under containment building air intake louver (PPD)

B. Vacuum Breaker Test

1. Test flange for valves

2. Portable vacuum pump

3. Water nanometer

4. Tubing'and fittings 8405300151 840509-PDR ADOCK.05000160 G PM ,

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. s GEOICIA TEQi RESEARCH REACTOR Chapter Procedure 4000 6 _

Approved 3-10-72 Maintenance COtfrAINMENT BUILDItG PRESSURE TEST Latest Rev. 4-19-84

& Testing Page 2 of 19

5. Air supply PRV, block valve, soap solution

6. Hg manometer II. Initial Preparation

1. Check filter cartridges in supply air filter in tank pit. Use clean 10 micron units if required

2. Locate and install reference tanks as follows:

(See Figure 1, page 10) . Lockout and tag crane.

Tank 180 gal, hung from crane at reactor top level (south)-

Tank 2 80 gal, first floor (north)

Tank 3 20 gal, basement floor (north) -'

Tank 4 20 gal, process room

3. Locate 1.C. thetaceouples as follows af ter calibration at room temperature: (Let all T/C's print for 5 min at room temperature. Verify correct polarity hook up of T/Cs. Note on recorder chart).

T. C. Recorder Point Location TC 1 1 Tank 1 TC 2 2 Tank 2 TC 3 3 Tank 3 TC 4 4 Tank 4 TC 5 5 ,

Light (ECCS)

TC 6 6 Recorder TC 7 7 Basement (ambient)

TC 8 4 - 8 Placed in vacuum breaker (outside, ambient)

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... .i GEOIGIA TECil RESEARCil REACTOR Chapter

• Procedure 4000 6 Approved 3-10-72 Maintenance CONTAINMENT BUILDING PRESSURE TEST Latest. Rev. 4-19-84

& Testing Page -3 of 19

4. Pressurize reference tank system to 2 psig using an accurate gauge (lleise). Maintain the test a minimum of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Read and record the pressure once/ hour on data sheet 1, page 11.

5. Check that equalizer valve system is installed inside large personnel airlock.

6. Make arrangements for acquiring 150 *s 200 cfm ait compressor and 100 ft. of 3/4-inch air hose. .

7. Notify campus security and Physical Plant

. Department that test is to be' run.

8. Cancel or reschedule any tours of ' the Nuclear

'Research Center. ,

9. Notify all NRC. personnel and all experimenters .,*.

so that they are aware of the test and can

• remove equipment, etc. .

10. Ilook up T/C's to recorder and check them out.

,. Locate recorder so that it is visible and .

readable from the visitor's side of the 3

containment building. viewing window.

11. Check out individual catwalk heater thermostats for operability. Adjust'to 65 degrees F.

12. Notify building air conditioning mechanic of test and have him check out air handling unit on top of control room. Verify that building A/C unit is performing without large variations in chilled water temperature.

13. At building test panel, flush water resevoir tank and lines. Fill tank with water.

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m GEORGIA TEll RESEARCH REACPOR Chapter Procedure 4000 6 Approved 3-10-72 Maintenance CONTAINMENT BUILDING PRESSURE TEST Latest Rev. 4-19-84

& Testing Page 4 of 19 III. Test Procedure A. Vacuum Relief Valves Note: A pressure test is run prior to the vacuum test on these valves. They are not to be tested again before the containment building test itself.

1. Ilook up to air source as shown in Figure 2, page 12.

2. Pressurize relief valve to 2.1 to 2.2 psig.

3. Close block valve til and remove air supply source. Take readings on data sheet 2 Read every 5 minutes for 20 minutes, then'every 20 minutes for 1 hoor.

'4. Close outside isolation valve and continue to

• take readings on data sheet 2, page 13, every 5 minutes for an additional 30 minutes. -

5. Report test results to supervisor.

Note: The maximum allowable pressor'e loss during this test is 1.2 psi per hour per valve.

This loss rate would be equivalent to'an air leak of 6.7 ft per 24 hrs. per valve. The total allowabic air loss for the entire containment building is 2676 ft per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />

@ 2 psig.

6. Open isolation valve.

7. Relocate set-up on other valve and repeat steps 2,3,4,5 and 6

8. Report results to supervisor.

.9. Hook up vacuum sygtem as shown in Figure 2, page 12.

10. Create vacuum in valve and observe and record on data sheet 2 where valve relieves. Note:

Valvef is designed to open at a vacuan of 0.12 psi or'3-32 in of water.

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GEORGIA TECH RESEARCH REACTOR Chapter Procedure 4000 6 Approved 3-10-72 Maintenance CONTAINMENT BUILDING PRESSURE TEST Latest Rev. 4-19-84

& Testing Page 5 of 19

11. Report results to supervisor.

.12. - Relocate setup on other valve and repeat.

13. Remove flanges and test equipnent and store.

Note: Do not store mercury manometer in containment building.

B. Containment Building Test

1. Make a careful survey of containment building ,

for equipment subject to damage by a 2 psig external pressure so it can be either vented or or removed.

2. Check that cap is removed inside containment building on building pressure sensing line.

3. Verify that the reference tanks have been checked and positioned and that the water ..

manometer valves are set to connect the tanks ~

to the containment building.

4. Verify that T/C recorder is visible 'f rom viewing window, all T/C's are hooked up and responding and that enough chart paper is on recorder for the 3-day test.

S. Disconnect control room annunciator bell and tag console-to this offect.

6. Rer2t relative humidity control above control room to 70%. . Verify building thermostat is set at 68 degrees F.

7. Remove current consele log book from containment

building.

8. Place telltale on air handling unit over control room. Verify air flow by movement of telltale.

9. Position viewing mirror so that entire annunciator panel is visible from viewing window.

10. Check ink supply, hair humidity element, and ver#i,fy,that clock is wound on hygrothermograph.

Place where visible from viewing window.

u GEORGIA TECil RESEARCil REACTOR Chapter Procedure 4000 6 Approved 3-10-72 Maintenance CONTAINMENT BUILDING PRESSURE TEST Latest Rev. 4-19-84

& Testing Page 6 of 19

11. Check.and record pressure on inflatable gaskets.

Main airlock Personnel airlock _,,,.

Truck Door

12. Set up IIelium blanket at gas holder (min.

of 20%)-

a. Remove all personal iterps, ladders, soap solution, brushes, wrenches, clipboard, master. procedure, fork lift truck, and other equipment needed for the test from the containment building.

b. Make 'P.A. announcement before isolation

c. Turn "DO NOT ENTER" to manual. -

d. Read Kanne just before isolation.

Kanne reading .

e. Isolate the building. Physically check the following valves closed:

1) 4-isolation valves

2) 8 rabbit valves

3) vacuum valve

4) Position the Dnergency Air Lock doors

• so that INNER DOOR-OPEN OUTER DOOR-CLOSED f.Makeanynecessaryadjustmentsto(he building security system.

g. Start compressor and pressurize building to 4.7 in. Hg pressure as indicated on containment building pressure manometer in pipe chase. (approx. 3 to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> required).

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7 l GE0f0IA TECH RESEARCil REAC'lDR Chapter Procedure 4000 6 Approved 3-10-72 Maintenance CONTAINMENT BUILDItG PRESSURE TEST Latest Rev. 4-19-84

& Testing Page 7 of 19

h. Stop compressor and start building test.

1) Allow at least I hour for pressure in l reference tanks and building to equalize by leaving both valves on the differential pressure manometer open (see Figure 3)

2) Open equalizer valve to pressurize water reservoir tank

3) Slowly open both valves at bottom of manometer and flush out lines and reservoir or manometer

4) Carefully close manometer drain valve and let water fill both legs of manometer.

When level reaches zero mark close both valves at the bottom of the nanometer. .If necessary, drain this water t. remove any .. ***'

contamination, (rust, dirt, etc.) in the

• manometer tube and repeat step 4.

5) Close equalizer valve to start pressure test. .,

i. Check'each item for air leakage; use

, leak-check as required. If leakage is detected, estimate the magnitude.

1) Both vacuum relief valves (remove screens, soap test, clean of f soap)

2) Viewing window

3) Main air-lock

4) Dmergency air lock

5) Truck door

6) Intake 24" butterfly (scaffold)

7) Outlet 24" butterfly

8) 4T.,va,1ve and fittings in tank room

+ GE0f0IA TECll HESEARCH REACIOR Chapter Procedure 4000 6 Approved 3-10-72

' Maintenance CONTAINMENT BUILDING PRESSURE TEST Latest Rev. 4-19-84

~& Testing Page 8 of 19

9) All joints, fittings and valves at manometer test panel

10) Both boa a tubo extension penetrations 11)' Cooling tower sump

12) ECCS valves 690, 691 and line drain (jumper reroved)

13) Rabbit station in Lob 149 (til5)

14) Habbit station in Lab 127 (1116)

'15) 4-Rabbit isolation valves at containment wall

16) All electrical penotrations O containment wall.

j. Record data on data cheet 4.

k. Start log, page 19, of general checks, work, problems found and how corrected etc. __

1. Start known leak by installing 0-60 sefn rotameter on flange at 3-inch blow down

. valve.. Set leak rate.to 50 setn.

.m. CAUTION Prior to depressuring the building, CPEN main

. air' lock outer door. Notify police dispatcher

. that a falso fire alarm raay be received during .

de pressurization.

n. Depressurize when notifled by supervision that the test is completed by opening 3 inch valve in Iank farm pit.

14. Securing Containment Building af ter test

a. Secure fire alarm system, if it goes of f, by-disabling in the cold equipment room. .

Rewind box in containment and reset panel. _

b. Check air supply filters. If dirty, or' der replacenents. _

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GEORGIA TECII RESEARQi REACIDR Chapter Procedure 4000 6 Approved 3-10-72 Maintenance CONTAINMENT BUILDING PRESSURE TEST Latest Rev. 4-19-04

& Testing Page 9 of 19

c. Install blind flange on 4 inch valve in tank farm pit.

d. Remove and store reference tanks, T/C's and recorder,

e. Reinstall check velve at airlocks

f. Make arrangements for returning air compressor and have the scaffold disassembled.

g. Drain manometers and water supply tank at test -

panel in pipe chase. Close valves and isolate building pressure sensing line and reference tank pressure line.

h. Carefully clean any soap residue from gaskets of vacuum relief valves and lightly lubricate gasket with silicone oil.

1. Set up on PM charts to manually lift vacuum relief valves and inspect gaskets six months -

from date of check. *

j. Clean and grease seats on 24 inch butterfly isolation valves. '

k. Wipe seals on airlocks. Open truck door clean out groove at bottom, wipe and carefully inspect seal.

1. Reset containment building hunidity control to 50%.

m. Reset security system to nornal

n. Reconnect console clarm bell and test for proper function. _____

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. ~GEONIA TEC11 DM5EA 31 11EACT0iii

~ Chapter- Procedure 4000

. . 6 Approved 3-10-72

~

Maintenance CONTAINMENT P' ,- n<r A 23ST Latest Ilev. 4-19-84

&' Testing .__

Page 10 of 19 F1GURE-1 ARRANGEMEffTOFEQUIPMENTFOR CONTAINMENT BUILDING LEAKAGE TEST' s.

N 20 T Crane G TC Temp [

Control Room l l "" [ #'

q TC 7 . g TC -

Reactor Vacuum

) TC 18>

/ Breaker r

3

/

O First Floor Ts Building Pressure M:nometer '

_ G TC~

.Sga Fig.-3 N 2

4 Q d (

G _TC Ta Reference Tank TC ((> g p Manometer Typical Reference re Elevator Pit'. y , g! . _. g(

N Filter 3 " Tes t Valve 3" Drain Line -

' t ,, , hg__ Air Supply Known Leak Rotameter.

R$ference Tanks 1 & 2 80 Gal.

R:ference Tanks'3 & 4 20 Gal.

~ Thermocouple Locations ' TC[f> w TC Ol>

Chapter ~ GEORGIA TECH RESEARCH REACTOR 6- Procedure 4000 Maintenance and Approved: 3-10-72 Mechanical Testing Latest Rev. 4-19-84 Containment Building Pressure Test Page 11 of 19 Data Sheet 1--Reference Tank Pressure Test Time Pressure Time Pressure Pressure Conversion Chart Psig = In. of Hg. = Ft. of H 2 O = In. of H 2) 1.0 2.036 2.307 27-11/16(.6875) 10 . 1 0.2036 0.2307 2-49/64(.7656) 0.2 0.4072 0.4614 5-17/32(.5312) 0.3- 0.6108 0.6921 8-5/16 (.3125) 0.4 '0.8144 0.9228 11-5/64 (.0781)

I' O.5 1.018 1.1535 13-27/32(.8437) 0.6 1.2216 1.3842 16-39/64(.6094) 0.7 1.4252 1.6149 19-3/8 (.3751) 0.8. 1.6288 -

1.8456 22-9/64 (.1406) 0.9 1.8324 2.0763 24-59/64(.9219) i

. Da te S tarted Shift Supervisor Date Terminated l.

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l GEOL'GIA TI'Cll ItSSENICl! ItEACTOR Chapter Procedure 4000

,. . 'G ' Approved 3-10-72

- Maintenance CONTAIN.%!:NT !!UILDItU PRESSURE TEST Latest Rev. 4-19-84

& Testing Page 12 of 19 FIGURE 2 ARRANGEMENT OF EQUIPMENT FOR

. VACUUM RELIEF VALVE TEST Vacuum Relief Isolation Valve- Containment Building Wall

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9 Vacuum Relief Valve .

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l 'M Vacuum Pump Heise Cage Hg H2O Manometer Manometer >

Air Supply Notes:

1. Both setups cannot be made simultaneously as shown.

2.' Valves should 'open at 0.12 psi or 3. in, of water.

3. Leakage of 0.1 psi / hour = cu. ft./ day @ 2 psig.

m Chapter 6 GEORGIA TECH RESEARCH REACTOR Procedure 4000 Maintenance and Approved 3-10-72 Mechanical Testing Latest Rev. 4-19-84 Page 13 of 19 Data Sheet 2--Vaccum Relief Valve Test Date Valve No. 1 Valve No. 2 Time Pressure , Time Pressure Isolation valve closed Isolation valve closed l

Opened at vacuum of in. H 2 O Opened at vacuum of

'.. in. HO 2

i Reactor Operations ,

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GEORCIA TECll RLSEARCil REACTOR

. Civipter Procedure 4000 6 Approved 3-10-72 Maintenance CONTAINMENT BUILDIIG PRESSURS TEST Latest Rev. 4-19-84

& Testing Page 14 of 19 FIGURE 3 TEST PANEL LAYOUT

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.INSIDE i OUTSIDE

.) pen To 1 i 3uilding g- m

-~

Equalizer

_y Line 7

To Reference y Water Reservoir Tcnks. Tank "

7  ?

1 g ft, Neg. Pos.

h. h 0 0 if if Pos. Neg.

." ~ r=

g b

Containment Building Differential Pressure, In, of Water Pressure, In of Hg Containment Building & Reference Tanks

m-Chapter 6 GEORGI A TECII RESEARCII REACTOR bhintenance and Procedure 4000 Mechanical Testing Approved: 3-10-72 Latest Rev. 4-19-84 Containment Building Pressure Test Page 15 of 19 Data Sheet 3--Personnel Assignment Sheet Date e

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Chapter-6 GEORGIA TECH RESEARCH REACTOR l: Maintenance-and Procedure 4000

Mechanical Testing' Approved

3-10-72

!. Latest Rev. 4-19-84 Containment Building Pressure Test Page 16 of 19 L General Instructions for Data Taking at Test Panel l

1. ~Take a set'of data once every hour.

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2. .Every hour,-or if abnormalities occurs, check the visitors gallery. -Check:

a. The main fan is blowing air (tell-tale)

'b. 'No significant temperature change as recorded by'the hygrothermograph. Therg may be a very gradual change but anything greater than 1 F per hour is significant. Note that a large temperature increase could cause an over-pressure in the containment building.

c. General observation.of building interior.

3. ; Record the chilled water supply temperature--taken from ,the in-line thermometer in the chilled water supply line.

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4. Walk around the outside of the containment building at least j once every 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. Look for evidence of air leaks.

, .5. Read the top of a mercury meniscus and the bottom of a water E

meniscus:

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, . Chapter 6' GEORGI A TECH RESEARCH REACTOR Maintenance and Procedure 4000 Mechanical Testing Approved: 3-10-72 Lates t Rev. 4-19-84 Page 17 of 19 Containment. Building Pressure Test

6. Always check zero prior to reading barometer.

a) If.necessary adjust plunger on cistern of barometer until tip of cone touches surface of mercury pool.

b) Read barometer by sliding vernier along scale until the bottom is just over meniscus. Read main scale and vernier.

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.30 -- /0 WS

, Note: "Zero" hach-mark is 2,- # the bottom of the vert'iiir, j - Read 29.12 in. Hg.

7. If Containment Building Internal Pressure reaches 4.80 inches Hg. call Reactor Supervisor. If the pressure ever reaches 4.90 inches Hg., immediately open the 3einch blowdown valve in the tank pit. Bring pressure down to approximately 4.7 in Hg.

8. No valve manipulations at instrument panel are required. Do not make any.

9. Record any portinent information on the Work Log page of 2he data sheets. Also record work on general problems and how corrected etc. Time, date, and initial your entries.

10. For any problem or difficulty with the test (equipment, data, etc.) contact Reactor Supervisor.

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w L Chapter 6 GEORGIA TECH RESEARCH REACTOR

!  : Maintenance and Procedure 4000 i -Mechanical Testing Approved: 3-10-72

j. Containment Building Pressure Test Latest Rev. 4-19-8 4 l- Page 18 of 19 I

. Data Sheet 4 Date Sheet of l

Inside Inside Ref. -Bldg. Total Bldg. Bldg. Chilled Barometric Press. Press. Leg Leg Diff. Temp. Relative Water Press. 4 Manometer Absolute Press. Humidity Temp.

Time In. Hg. In. Hg. In. Hg. In. H O In 11 0 In. H O F  %- F. INIT.

2 2 2 l

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a Chapter 6 GEORGIA TECH RESEARCH REACTOR Procedure 4000 Maintenance Containment Building Pressure Test App o edR v. 4-19 !84 and Mechanical Testing Page 19 of 19 Date Work Log Sheet of Date, Time Observer Description of work, check, etc. done.

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Georgia Institute of Technology RTM SCHOOL OF NUCLEAR ENGINEERING AND HEALTH PHYSICS ATLANTA, GEORGIA 3o332 NEELY NUCLEAR DESEARCH (404)094 3600 CENTER April 26, 1984 MEMORANDUM .

TO: L.D. McDowell, M.V, Davis, W.H. Downs , J. F. Hendr'icks PROM: . R.S. Kirkland

SUBJECT:

Console Logbook Entries Effective this date, please sign or initial any console logbook entries that you make regardless of the opera ~ ting status of the reactor.

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l A UrWt of the Uruvers.ty System of Georgia An Equar Educahon and Employment Opportunsty institute L