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Piping Sumps Model 42-22C, PS 42-30C, � 42-22C, and SPS 42-30C As the bolts are tightened,the T-nut will permanently imbed itself in the F1. General fiberglass manway flange.A surface-mounted piping sump will prevent future access to the tank from the manway. Ahe piping sump provides containment of a submersible pump leak and Ill provides a termination point for double-wall piping systems. F6. Hydrostatic Water Test The piping sump is produced in two pieces:a top half and bottom half. y The bottom half is surface mounted on the manway where the submersi- Use the supplied cork manway gasket,silicone caulk and metal/ ble pump will be located.After completing the piping and wiring connec- neoprene washers to surface mount the piping sump on the manway tions to the submersible pump and optional piping sump sensor,the top cover.After tightening all bolts,fill the piping sump bottom with one to two and bottom halves are cemented together using the two-part adhesive inches of water.Allow the water to stand at least 12 hours while other work used for fiberglass pipe connections. is being performed. Inspect the bolts and underside of the tank manway for potential leaks. F2. Handling Tighten bolts or repair any gasketslseals as indicated bythe presence of moisture. Wear glovesto manually lift,the piping sump.Do not roll or drop.Set on For Model Series SPS sumps,fill the sump above thejoint between the smooth ground.if high winds are anticipated,the contractor is responsi- top and bottom half.Inspectthe outside for leaks or use the standing ble for tying down to prevent damage from being moved by high winds. water test.Monitor the water level for 24 hours.if the water level is within 1/4"after 24 hours,the system is considered leak free. F3. Inspection Before installation visually inspect the piping sump for potential impact or F7• Piping Connections handling damage. The pipe sump fittings are field installed grommets or FRP couplings.See sections H 1-H5 for installation details. R. Tank Burial Depth The piping sump is designed for a tank burial depth of 48"from the tank F8. Typical Configurations top to grade.Deeper burial depths are possible by using a 24"manway Double-wall piping is stiffer and less forgiving of improper align- extension. ment than single-wall piping.Layout the piping trench and piping The pi pi ng sump bottom can be cut in the field to accommodate tank sump orientation to assure that the piping system can be con- burial depths less than 48"but above 36".Use a sabre saw or circular netted properly.It may be necessary to rotate the manway cover saw with carbidetipped masonry blades to trim up to 1211 off the upper and submersible pump so that the primary piping inside the piping edge of the piping sump bottom. sump is properly aligned to interface with the double-wall piping system. Piping sump Bottom The primary piping that connects to the submersible pump can be rigid Up to 12 inches maybe trimmed FRP piping or flexible connectors.Although flexible connectors are more from the upper edge of the piping costly,they will minimize potential piping alignment problems inside the sump bottom, pi ping sump,particularly for contractors not familiar with double-wall pi p- T �T ing systems.Two typical piping configurations are shown: ul maximum tutaH 28%" &Axrtersbb Rmp Offset Fmm center 1 (Red Jacket Only) Field installed Submersible pump pipe sump fitting 3" outer.0pipe r union 3" O Nipples F5. Surface Mounting on a 22" or 30" Remblecorracm, P 30"bng Manway po"2" Mamnaytwer If the pipi sum is to be surface mounted on the manwa ,first remove FRP d.Wdfang (Mzz3-e) P P 9 P Y , Opuonatl female by bsY the existing bolts onthe manway cover.Rotate the manway coverts Optional vem and/or stage Peng sump align the fittings and submersible pump with the intended piping vapor recovery lne run(see typical piping configuration).Wipe the manway cover to remove any dirt,gravel or other foreign substances that may interfere with the gasket.Place the supplied cork gasket on top of the steel cover and align it with the bolt pattern.Position the bottom of piping sump on top of the gasket. Note:When using the submersible pump offset from the center of the manway.the maximum Use the supplied silicone caulk and washers to seal the bolt holes. height for submersible pump(without leak detector)is 28"from themanway cover:Ihisallows PP ample room to removethe submersible pump for maintenance.A minimum height of 26"is Before bolting the piping sump to the manway cover,fill the bolt recommended to avoid over-stressing the flexile connector. holes with silicone caulk.After caulking the bolt holes,fasten the sump onto the manway using the bolts and neoprene coated washers.The neoprene coated washer must be Installed with the verucal height Restriction neoprene side down to assure the piping sump is watertight. Pump offset From censer 14 rm: rme em vas lioa + use neaww+rw,eo Nsoivve - �pongii o Junctunbox'" (Nemo 4) 226"mm..28"max ArrylxNlan s ,,saenrro.« cos Optional piping cwxqurs sump sensor' n "Optional sump sensor kit is available from O/c Tanks '"Contractor supplied;ma NEMA B for high groundwater conditions 12