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modern Modern Welding Company, Inc Installation Instructions - Glasteel II Jacketed Steel Tanks INTRODUCTION 4.3 For Glasteel [l [auks Fabricated without 1.0 Proper installation is essential to the expected product dielectric isolation, (threaded nylon bushings or life and performance on Moderns Glasteel II flange isolation kits) this tank must use either: Underground Storage Tank.This tank must be A)Non-metallic piping,or installed in accordance with these installation B) Conductive piping must be isolated from instructions, the latest issue of N.F.PA.30 and 31 the backfill material and any other metal pamphlet, the PEI/RP-100 and local authorities or grounding device. having jurisdiction over underground tank installations and codes. TESTING 1.1 Although the instructions are clear and precise, unexpected conditions often occur and thus $.0 Glasteel II tanks are shipped with a vacuum on prudent thought, coupled with extreme care the annular space.If a minimum of 5.3 inches become the proper procedure. Hg of vacuum is maintained for one hour, both the inner tanks and outer tank may be considered TANK HANDLING properly tested. Fluctuations in interstice vacuum are caused by temperature and barometric 2.0 Extreme caution shall be used wben handling the pressure changes. tank. Do not drop or roll the tank. NOTE!NFPA 30: 2-8.3:1 Secondary containment 2.1 Equipment to lift and lower the tank shall be of tanks shall have the interstitial(annulus) space sufficient capacity to do so without dragging or tested using vacuum at 5.3 in-$g. The vacuum dropping the tank. shall be held for one hour. Care shall be taken 2.2 The tank shall be lifted and lowered using the to ensure that the interstitial space is not lifting lugs or lifting plugs provided. Cables or subjected to excessive vacuum. chains used shall be of adequate length. No NFPA 30: 2.8.4: "Before the tank is initially circumstances warrant the use of chains or slings placed in service, all leaks or deformations shall around the tank shell.Maximum angle of the be corrected in an acceptable manner." sling shall be 60 degrees. CAUTION: Do Not Pressure Test Interstitial TANK STORAGE (Annular)Space. 3.0 If tank is stored on site prior to installation, a EXCAVATION AND BEDDING secure area shall be chosen.Special attention 6.0 Glasteel II underground storage tanks are shall be placed in selectingthe storage location to designed to withstand a maximum burial depth of 60". If assure the absence of rocks and foreign objects a greater burial depth is required,contact the that might cause damage to the tank exterior. manufacturer immediately. 6.1 The excavation shall be properly accomplished and free from any material or object that would cause damage to the tank exterior. 6.2 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,or 6 inches of pea gravel, the largest particle of which does not exceed 3/4 inch, orrounded•edge gravel erushings, angular particle size required to be not less than 1/8" or more than 1/2".See chart in"Backfill Section' INSPECTION 6.3 There shall be a minimum of 12 inches from the 4.0 Visually inspect the tank exterior for damage. outside edge of the tank to the inside edge of the Any extreme gouging or abrasion should be carefully excavation.This distance shall remain true for reviewed and appropriate action taken. the entire perimeter surrounding the tank. 4.1 Remove thread protectors and shipping plugs REMOVE LARGE OR SHARP nocK from all openings(except vacuum gage location). FROM FsrJVA1" Using compatible, non hardening pipe sealant, t,uNO'"uM �r install permanent metal plugs in all unused openings. 4.2 Refer to Modern Welding Company's publication, "Finishing Instructions" for proper installation of ev trPE aAstEgr pormanent coverings for unused openings and s lifting lugs. Li FAR,INERT SAW... 0�C PEA OAN L + on crosk"S1ONE'. .