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Remraaded protonsfor the Testing and Verificatio5rm
<br /> n of Wt Overa Leak Detection and rday Containment Equpment at UST Facitias PEURPI200-17
<br /> m
<br /> For tight-wrap tanks, use the test method in this Undergroand Fiberglass Double and TH'ple-IWI Repeat amps 4 End 5 until a stable vacuum is
<br /> CAUTION: Use Doty an elropuated vaso- Tanks With DryArnular Space MI 4NIA07. achieved. If a sable vacuum cannot be main.
<br /> section. tamed, the tank secondary containment inwg-
<br /> um eomea Are a vacuum pump powered by 4.2.7 Test Equipment. Test equipment shall rity teat fails,
<br /> n explDslon-proof motor. Vacuum pumps 4.2.6 Fiberglass Tanks. Determine if the later- include:
<br /> with electric motors that are not axplo- stinal spam is a "fight-wrap' design car a "110% 7. When the vaand the test staff time.
<br /> level stabilizes, record the
<br /> elan-pr°af may Ignite flammable vapors. comait" design. Either type of fiberglass tank a vacuum-gwenGog device that can be used in vacuum level and
<br /> If a portable air compressor Is used, It may use this teat orthe lateat version of Fiberglass a Class 1, Division 1 arta capable of pulling 15 S. Observe the vacuum level for the period of
<br /> should be located at least 20 feet away Tbnkdt Pipe Lssdtmee (FIPI) RP 2007, Field Test inches ofm acury (Hg) vacuum; time she" in •IYble 44
<br /> from the vemudeduetor or outside any Protocol for Turing the Annular Space offnrtalled • an automatic vacuum shutoff valve or varum
<br /> Class 1, Division 1 ca
<br /> area. regulator (The shmoff valve n be au to 9. Record the final time End vacuum level,
<br /> close at a predetermined safe level, preventing 10. Check the interstitial spam for accumulation
<br /> 4.2A Preparation. The procedures in this sec vPacuumathat lcould damk
<br /> age the tank.y of accidentally Tho we ing a of of Iqliquids
<br /> don are general in nature and reflect the suggested the valve is noomnmeaded because it Emits the
<br /> vacuum levels and hold times fa testing tank vacuum that an be applied to the intersdUal
<br /> secondary containment areas. Consult tank mann- =1fggMons
<br /> Duration,
<br /> facturer and authority having jtrisdicfiom (AHI)
<br /> space:'); M1oun
<br /> guidelines before performing these tuts, as theta vxuum gauge with a range of 0 incises to 30rcgmitensenn may differ. inches Hg graduated in increments of OS Inches z
<br /> Hg or ins;
<br /> Determine if there is liquid present in the interid- ., 43.9 Pass/Fall Criteria. U there is no less in
<br /> tial spam. H liquid is found, determine if the fluid toggle valve and vacuum hose; vacuum level, no liquids Lee drawn into the inter-
<br /> is werer m product, and remove it to Use extent -) - �• v `) stopwatch or other time measurement device stitial spam during the lest duration shown in Table
<br /> practicable FIGURE 4.3. The vecwm $auger erd control vette ersed capable of measuring a I-second increment; 4.1, End the tank secondary cootarmmnl area has
<br /> The hydrostatic pressure from' a high watts table for tank Interstitial testing piwnber's plug the lank secondary arthe wt. then
<br /> y than ar the start wntaiumenl passes
<br /> s the lest.
<br /> imposes inward pressure on the outer wall of a
<br /> 4.2.9 Teat Procedure.
<br /> UST Applying a varum to the interstitial apace IfWue v any varum tat during ihetest or0quids
<br /> of the tank mutes additional pressure on The outer1. Install the plumber's plug in the intersfidal are down into [he interstitial apace, than the tank
<br /> ce
<br /> wall. There combined fors can damage the - ' thesis) below my sees. secondary conWnrmntfalls AIR wt.
<br /> secondary tank wall when there is a large defined 2. Connect the vacuum gauge, valve and the
<br /> spam betwmn the primary and secondary ranks. vacuumi B 4.3 Tank Secondary Containment Integfty Testing
<br /> Cmsequenfly, to prevent damage to the tank, it is - plumber's
<br /> plugf g device to the Tilting oar en _ llquid+llled Test Method.
<br /> importantto ob srve the water table and associated the vacuum
<br /> plug. The valve should a between
<br /> eli-
<br /> recomumended vacuum levels when tesding. the e. no g souses inlet b and the h wove 4.31 General. 'fid [est method tun the m once
<br /> gauge- Ther gauge should be between the valve City of the liquid-Triton interstitial spam There ase
<br /> V t the primary tank to atmosphere during the and the fitting so it will read theintcrstitial vac a number of variables that affect this teat, such as
<br /> wt noun when the valve is closed. The autonude interstitial spam volume, temperature, water table
<br /> vacuum shutaff valve is located at the inlet of and product level in the primary tank Refer to
<br /> In same 'uutallations, the tank interstitial spam the vacuounproducing devim and should be Appendix A for specific manufacturers' test prow
<br /> may be vented to minimim the buildup of condet- set at a minimum of 10 percent and no tome dines.
<br /> sation. in these came, Rai off any vent lines to the than 2 inch" Hg above the test vacuum.
<br /> tank interstitial spam prior t° testing. Purpose. This genual method Is used to
<br /> : so� 3. Ensure all connections are airtight wt t"t the integrity of the liquid-filled secondary coo-
<br /> Delcrmine the volume of the tank This mfDrtna- _ _ 4. Stan the vacwm•genersting device, and open tainmrnt of a UST.
<br /> tion is available from facility records or the euro- OR valve.
<br /> made tank gauge (ATO) readout " the I Description spat of Test. liquid is added to
<br /> 6. Pull Use vacuum w 10 Inches Hg. Close the the interstitial spam of the tank and the level is
<br /> 4.2.5 Steel Tanks. Determine if the interstitial valve. btoughtupinto the intersddal riser. The liquid level
<br /> spam is a "fight-wrap' eAllow the vacuum to stabilize for a minimum.design or a "110% contain- Es monitored for a specified period of Craw. If the
<br /> men[" design. 'Ihnka with a 110% containment of 5 minutes at the specified wmum level. H liquid level is maintained, then the containment
<br /> design should use the latest version of Steel Trak system has passed the test.
<br /> te
<br /> Insfitu 's (SIT) R012, Recommended Practice for astable vacuum cannot be maintained, tut
<br /> interstitial Tsghwu Testing of F'sling Under- FIGURE 44. Thep/umbo/s plugprovid" a leak-U$he equipment shall be inspated for leakage.
<br /> ground Double Wall Steel Tanks for rating, connection to draw a vacusrm on the tank Fntersntiai
<br /> space. I
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<br /> Recommended Practices $"alasttg end Ve'dradot of Spit, tharK Leak Detection and Secodary [mrakenent Equipment at UA f rites OF PEI/RP1200-17
<br /> Turrrination fittings most be sealed at all piping
<br /> 4.3.4 Test Conditions. The primary contain- 4.3.9 Test Procedure, Sm PIPING SECONDARY tenniatioa, and Lest finings must be an'essibleto
<br /> men[ may consent any level of product. Determine =set orm the test
<br /> whether the groundwater depth is above the bottom Ytnk Int my may in the CONTAINMENT INTEGRITY
<br /> dof theew nreg Consul[ specific manufacturer's pmm-
<br /> tank Interstitial spam. TESTING Check with the piping manufacturer regarding
<br /> duw in regards to groundwater and performing the 2. Determine and record the groundwater keel. testing procedures and the proper pressure before
<br /> tut. No bulk defiveries shall oecur within B hours 3. Add rest liquid to the tank imerstifial 5.1 General. Underg asod product piping is available testing. Testing requirements stated in this rceom
<br /> prior to conducting or during the UAL No dispens- space, bringing the fluid level into Ux riser with single and double wads. Double-walled piping pro- irKO� pnenen are general levels
<br /> and and may
<br /> ing may acro during the Leat. (standpipe) to Ilse appropriate level based on vides containment for leaks from primary cootainment ars Recommended pressure levels and test dura-
<br /> she manufacturer's written procedure, and must be leak-fine m prevent release of product into dons arc addressed in Section 5.35. Piping manu-
<br /> 4,3.6 PrepanUon. Determine; Use volume of facturcrs' ["t procedures may differ.
<br /> the tank and identify the test being performed. 4, Document the starting level and start time of Use environment
<br /> look: volume information is available from facility Me UAL 6.2 Purpose. This method is used to wt the integrity This wt can be conducted in sections or u one
<br /> records m the ATG readout. Prepare a monitoringf piping interstitial space(s). continuous pipe depending on the instillation. Care
<br /> fluid solution to add to the interstitial spam 6. Stan the time-mtasurermnt device. oshould be taken to costae that the dire secondary
<br /> 6. Wait the appropriate time according to the 6.3 Testing Piping Under Pressure, containment of the piping system is tested.
<br /> 4.3.6 Steel Tanks, Liquid-filled (hydrostatic) manufacturer's tatpiomdure.
<br /> van on steel tanks require the came fluid as the S.&J. Description of Test. en uastitial space 6.3.4 Test Equipment. Test equipment shall
<br /> monitoring fluid. Contact the manufactum for 7. Document the ending level and coding time of ThIs sealed at the ends and is pressurized with an inert include:
<br /> instructions. the test' gas. The pressure is monitored for 1 boa. If any • inert gas source (nitrogen, helium, tic.);
<br /> 8• Determine and record the groundwater level. i pressure drop occurs, the secondary containment
<br /> 4.3.7 Flberglasa Tonka. Determine tank anti
<br /> [ails the test • stopwatch or other fimo-measurement device
<br /> End diameter and apply the appropriate method. S. Remove liquid added to the tank interstitial capable of mounting a l-second increment;
<br /> spam, and restore the liquid level in the tack6.3.2 Test Conditions, 'Die primary pipe may . rest tubing assemblies (Tubing assemblies; pro-
<br /> 4.3.9 Test Equipment. Test equipment shag intttodal to normal operating condition. contain fuel, and dispensing activities may coo- vide xc"s to the beginning and end of the
<br /> include: tine during the tat without affecting wt results.
<br /> 30. Reinstall the sensorso that it is installed within � interstitial space.);
<br /> • monitoring fluid; manufacturer's specifications. 6,13 Preparation. If the interstitials am com-
<br /> p pressure gauge with a IS psfg maximum P>u-
<br /> • stopwatch an other time-vCanmetrcnt device tains product, eosum that the intersfim is open to sum reading with OS increments.
<br /> 4.310 Paas/Gail Criteria. Compare p data to
<br /> capable of measuring a 1-second immement; Use euuosphere ad perform a precision wt n she
<br /> the determinmarnsface
<br /> If the tankpaishail criteria inAppendixA
<br /> • tape measure. [o deremine U the tank hes passed the test Primary PIPtaB before conducting a test an the sec- 6.3.6 Test Procedure.
<br /> ondary containment piping. i. ifnec"s
<br /> ary, no-install termination (rut) boots at
<br /> piping terminations.
<br /> s' ^ j 1 2. H necessary, connect the tubing assemblies 10
<br /> i• t i 4.;1• v the secondary containment termination fitting
<br /> , . ..�( - an each end of the section of piping to be tatted.
<br /> 1 3. Connect the inert gas source and pressure gauge-
<br /> 4. 0radually pressurize the interstitial spam to 5
<br /> psig. Close the valve and allow the pressure to
<br /> stabilize. Repwsurim to the specified test Ina-
<br /> , t sure if necessary.
<br /> ' 4 d
<br /> 5, Observe the pressure for a period of 1 hour.
<br /> J) . 6. ifthe piping pressure after l hour is less than [he
<br /> wt pressure, check termination fittings and tau
<br /> _ t
<br /> assemblies for looks.
<br /> . T 7. Release the pressure On the system slowly.
<br /> S. Remove the test equipment.
<br /> FIGURE GL Boots on piping transitions and through 9. Restore the piping to its normal operating condi-
<br /> sumpwells must beleak-Ught when piping secondary don.
<br /> containment integrity testing is performed.
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