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When required for FRP coupling: • Recommended method for supplemental heat is a hand held heat gun (maximum output temperature 200°F). Important: Mix unused tube of catalyst and any unused adhesive to form a solid for safe dis- posal. Then dispose as a nonhazardous waste in accordance with federal, state and local regulations. D5. FRP SEALED TURBINE ENCLOSURE (SEE FIGURE 30) Do Not air pressure test turbine enclosure. See Section D8 for testing methods. Turbine enclo- sures must be isolated from direct traffic load- ing. (See section D3) To prevent water infiltration in high groundwater conditions turbine enclosures must: ♦ Be mounted and cemented to secondary containment collar using same procedure described in section D4. ♦ Have its top mounted and cemented in place. Follow procedure used to cement turbine enclosure to collar (section D4). ♦ Always vent turbine enclosures. (Usually accomplished with double wall piping.) FIGURE 30 On a sealed turbine enclosure torque lid bolts to 25 ft. - lbs. Fallow ASTM specifications for "Structural Joints Us- ing ASTM A325 or A490 Bolts". D6. FRP WATERTIGHT TURBINE ENCLOSURE (SEE FIGURE 311 Do Not air pressure test turbine enclosure. See Section D11 for testing methods. Turbine enclosures must be iso- lated from direct traffic loading. (See section D3) To prevent water infiltration in high groundwater conditions turbine enclosures must: ♦ Be mounted and cemented to secondary containment collar using same procedure described in section D4. FIGURE 31 ♦ Have its top mounted and cemented in place. Follow procedure used to cement turbine enclosure to collar (section D4) except this joint is made on the exterior of the turbine enclosure. ♦ ♦ Always vent watertight or sealed turbine enclosures. (Usually accomplished with double wall piping.) ♦ Apply o -ring lubricant to o -ring groove, place o -ring in groove, and push lid on. ♦ The o -ring lubricant will require periodic replacement as it will degrade over time. Any lubricant that will not dissolve in gasoline or water, nor attack Buna-N rub- ber is acceptable. Almagard 3752 from Lubrication Engineers in Fort Worth, Texas is recommended. While not as long lasting, other lubricants like barium grease, or petroleum jelly can also be used. Lubri- cant can be applied directly to the o -ring or to the inside surface of the lid flange. When removed from the turbine enclosure, the lid should be placed with the flange up (not in the dirt) to prevent the lubricant on the lid flange form being con- taminated with dirt, small rocks, or other contaminants. ♦ The gasket (flat or o -ring) is a maintenance item which • The gasket (flat or o -ring) is a maintenance item which will have to be replaced periodically or when it shows a will have to be replaced periodically or when it shows leak during a tightness test. a leak during a tightness test. 22