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modern Mode, ii Welding Company, Inc PO Box 1450 - Owensboro, KY - 42302 Subsidiaries Nationwide - (502)685-4400 Installation Instructions - Glasteel II Jacketed Steel Tanks INTRODUCTION Using compatible, non-hardening pipe sealant, 1.0 Proper installation is essential to the expected product life install permanent metal plugs in all unused and performance on Moderns' Glasteel II Underground openings. Storage Tank. This tank must be installed in accordance 4.2 Refer to Modern Welding Company's publication, with these installation instructions,the latest issue of "Finishing Instructions"for proper installation of N.F.P.A. 30 and 31 pamphlet,the PEURP-100 and local permanent coverings for unused openings and authorities having jurisdiction over underground tank lifting lugs. installations and codes. 4.3 For Glasteel 11 tanks fabricated without 1.1 Although the instructions are clear and precise, dielectric isolation, (threaded nylon bushings or unexpected conditions often occur and thus flange isolation kits)this tank must use either: prudent thought,coupled with extreme care A)Non-metallic piping,or become the proper procedure. B)Conductive piping must be isolated from the backfill material and any other metal TANK HANDLING or grounding device. 2.0 Extreme caution shall be used when handling the tank. Do not drop or roll the tank. TESTING 2.1 Equipment to lift and lower the tank shall be of 5.0 Glasteel 11 tanks are shipped with a vacuum on sufficient capacity to do so without dragging or the annular space. If a minimum of 5.3 inches dropping the tank. Hg of vacuum is maintained for one hour,both the 2.2 The tank shall be lifted and lowered using the inner tanks and outer tank may be considered lifting lugs or lifting plugs provided. Cables or properly tested.Fluctuations in interstice vacuum chains used shall be of adequate length. No are caused by temperature and barometric circumstances warrant the use of chains or slings pressure changes. around the tank shell. Maximum angle of the NOTE:NFPA 30: 2-8.3:1 Secondary containment sling shall be 60 degrees. tanks shall have the interstitial(annulus)space tested using vacuum at 5.3 in-Hg. The vacuum TANK STORAGE shall be held for one hour. Care shall be taken 3.0 If tank is stored on site prior to installation, a to ensure that the interstitial space is not secure area shall be chosen. Special attention subjected to excessive vacuum. shall be placed in selecting the storage location to NFPA 30: 2-8.4: "Before the tank is initially assure the absence of rocks and foreign objects placed in service,all leaks or deformations shall that might cause damage to the tank exterior. be corrected in an acceptable-manner." CAUTION: Do Not Pressure Test Interstitial (Annular) Space. EXCAVATION AND BEDDING 6.0 The excavation shall be properly accomplished and free from any material or object that would cause damage to the tank exterior. 6.1 The bottom of the excavation shall be suitably graded and leveled. The foundation for the tank shall be a minimum of 6 inches of clean,inert, compacted sand,6 inches of pea gravel,the largest particle of which does not exceed 3/4 inch, or rounded-cdge gravel crushings,angular INSPECTION particle size required to be not less than 1/8" 4.0 Visually inspect the tank exterior for damage. or more than 1/2". See chart in`Backfill Section" Any extreme gouging or abrasion should be carefully 6.2 There shall be a minimum of 12 inches from the reviewed and appropriate action taken. outside edge of the tank to the inside edge of the excavation. This distance shall remain true for the 4.1 Remove thread protectors and shipping plugs entire perimeter surrounding the tank. Multiple from all openings(except vacuum gage location). tank installation will also require a minimum of