INSTALL 2002 - Laserfiche WebLink

Home Browse Search

gi!Mde r Modem- Welding Company, C Installation Instructions 9 Glasteel 11 Jacketed Steel Tanks INTRODUCTION 4.3 For Glasteel Il tanks fabricated without 1.0 Proper installation is essential to the expected dielectric isolation, (threaded nylon bushings•or product life and performance on Modern's 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.P.A. 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, 5.0 Glasteel H tanks are shipped with a vacuum on unexpected conditions often occur and thus the annular space. If a minimum of 5.3 inches prudent thought, coupled with extreme care Hg of vacuum is maintained for one hour,both the become the proper procedure. inner tanks and outer tank may be considered properly tested. Fluctuations in interstice vacuum TANK HANDLING are caused by temperature and barometric 2.0 Extreme caution shall be used when handling the pressure changes. tank.Do not drop or roll the tank. NOTE: NFP A 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-Hg. The vacuum droppingtank shall be,lifted and lowered using the the tank. shall be held for one hour. Care shall be taken 2.2 The t e to ensure that the interstitial space is not subjected to excessive vacuum. lifting lugs or lifting plugs provided. Cables or NFPA 3U:2-8xc "Before the tank is initially chains used shall be of adequate length. No circumstances warrant the use of chains or slings i placed in service, all leaks or deformations shall around the tank shell.Maximum angle of the be corrected ve,an acceptable manner." CAUTION: Do Not Pressure Test Interstitial sling shall be 60 degrees. (Annular)Space. TANK STORAGE EXCAVATI®N AND BEDDING 3.0 If tank is stored on site prior to installation, a 6.0 Glasteel II underground storage tanks are secure area shall be chosen.Special attention designed to withstand a maximum burial depth of shall be placed in selecting the storage location to assure the absence of rocks and foreign objects 60". if a greater burial depth is required, contact the manufacturer immediately. that might cause damage to the tank exterior. 6,1 The excavation shall be properly accomplished and free from any material or object that would cause damage to the tank exterior. a 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, or rounded-edge gravel crushings, angular particle size required to be not less than 1/8" or more than 1/2".See chart in"Backfill Section" 6.3 There shall be a minimum of 12 inches from the INSPECTION outside edge of the tank to the inside edge of the 4.0 Visually inspect the tank exterior for damage. excavation.This distance shall remain true for Any extreme gouging or abrasion should be carefully the entire perimeter surrounding the tank. reviewed and appropriate action taken. REMOVE LARGE OR SHARP ROCK 4.1 Remove thread protectors and shipping plugs FROM EXCAVATION from all openings (except vacuum gage location). NNIMUM 12" Using compatible, non-hardening pipe sealant, install permanent metal plugs in all unused openings. .' . 4.2 Refer to Modern Welding Company's publication, DETERMINED �;." '•, "Finishing Instructions"for proper installation of sv solL rrPE eLASME1 J permanent coverings for unused openings and �" •.s lifting lugs. pw } *CLEAN.IPIERT SANG. . 3 :��. ...:..__ a oca r_am -:fix