COMPLIANCE INFO_2003 - Laserfiche WebLink

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0 WARNING:All internal piping must be at least 4"(6"for 12'diame- If the tank has a sump or a bottom fitting,take extra care that the ter tanks)from the tank bottom. tank does not rest on it prior to installation. ~ Refer to Figure 91 and Table 91 to determine the correct dimen- During installation,provide a clear area in the bedding material,so sions to size internal pumps and piping. that the tank rests on the bedding and the sump or bottom fitting is When the tank's interstitial space is filled with a liquid,the space clear.After setting the tank,fill and tamp the resulting void by hand must be vented.It is sufficient to drill a 1/4"-diameter hole in the before continuing the backfilling. side or cap of the monitor system riser pipe.When the ground- water level will be high enough to enter a drilled vent hole,install a separate vent line from the riser pipe to above grade level. When the tank has been set,tested and backfilled,and all piping When the interstitial space is dry,it is not necessary to vent the and venting has been completed,the balance of the backfill material space to atmosphere. may be added. It is the installers responsibility to select a thread sealant that is When the tank has been backfilled to subgrade,take the final compatible with the product being stored.Some sealants cannot diameter reading(Deflection reading"B on the checklist). be used with some products.If necessary,remove,clean and The same material as specified in Section 3 must be used to redope all plugs. completely fill excavation.The backfill must be free of debris.Any blocks or bricks used as support material during piping must be H removed prior to completion of backfilling.Safety measures,such ®-A g D _G as placing barricades until installation is complete;should be used DIMENSION LINE DETAIL DIMENSION LINE DETAIL around the excavation site. SINGLE WALL B DOUBLE WALL II DOUBLE NALL I SCALE, 1/16 SCALE. 1/16 Be sure that the installation meets all of the requirements of minimum cover as spedfied in Section 4. Be sure that the checklist is properly completed. •B• •E• .C, ,A, •F. ,D, •I• ,G, 1 s SINGLE WALL RIDOUBLE WALLBBED OUTER MALL DOE WALL I L DIPSTICK PREPARATION sMO Drive a small-headed,non-sparking(e.g. brass)nail into a wooden NOTE' I -ALL FITTING DIMENSIONS ARE MEASURED FROM THE TOP OF A dipstick at the 1"mark. SERVICE FITTING TO THE INSIDE BOTTOM OF THE TAN:AND INCLUDE GAUGE PLATE CLEARANCE. FIRST DIAMETER READING 2- INTERIOR DIAMETERS DO NOT INCLUDE GAUGE PLATE CLEARANCE. 1. Place the dipstick into a service fitting. FIGURE 91 2. Measure and record the distance from the tank bottom to the top of the fitting. TABLE 91 3. Pull the dipstick up until the nail catches on the inside top of the tank INTERIOR DIMENSIONS(IN) 4. Measure the distance from the tank top(inside)to the top TANK of the fitting.Subtract 1"from this measurement and record DIA. "A" "B" "C" "D" "E" I "P" "6" "H" "I" the distance. 4' 49.50 54.50 48.00 51.50 56.625 48.00 1 5. Subtract the second distance from the first and record this 6' 73.00 78.00 71.36 72.75 77.75 70.625 75.125 80.25 71.36 value as reading`A"on the Installation Checklist. SECOND DIAMETER READING 8' 93.00 98.00 91188 92.75 97.75 90.625 95.375 100.50 91188 1. Place the dipstick into a service fitting with a riser installed 10' 121.00 126.00 11916 120.75 125.75 118.50 123.50 128.625 11916 to subgrade. 12' 138.25 143.25 136.625 2. Measure and record the distance from the tank bottom to the top of the standpipe. All piping must conform to all applicable codes and standards.See 3. Pull the dipstick up until the nail catches on the inside top of INTRODUCTION. the tank. WARNING:When pressure testing the piping,the tank must be 4. Measure the distance from the tank top(inside)to the top of isolated from the piping system.The test pressures for piping the standpipe.Subtract 1 from this measurement and record may cause the tank to explode and cause death,severe personal the distance. injury or property damage. 5. Subtract the second distance from the first and record this CAUTION:when extending monitoring or vapor recovery piping to the surtace,be value as reading"B"on the Installation Checklist. sure that the at-grade fittings are different from any fill fittings and will not accept _ standard fill hoses.