COMPLIANCE INFO_PRE 2019 - Laserfiche WebLink

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GOLD COAST COATING, IN* FIBERGLASS LINING SPECIFCATIONS I. PRODUCT REMOVAL Product will be removed to an inch or less prior to the commencement of work by the purchaser . II. EXCAVATION Excavation will consist of a 5x5 hole down to the center of each tank. If done by the purchaser, it will be excavated prior to the commencement of work. III. REMOVAL OF FLAMMABLE VAPORS Sources of igninition must be removed from the area surrounding the tank and vapor vents during periods when flammable vapors may be expelled. Work will not commence during electrical storms and when the wind may carry vapors into areas that could create a hazardous condition. The tank will be thoroughly purged of vapors. Ventilation will consist of an eductor (vacuum) type system. This system is usually driven by compressed air and shall be properly grounded to eliminate the possibility of a static discharge . When using this method, the fill tube shall remain in place to ensure that the ventilation is at the bottom. An extention tube that is at least 12 feet above grade will be used to discharge the vapors above the working areas. IV. TESTING FLAMMABLE VAPOR CONCENTRATION Vapor testing will be made with a combustible gas indicator . Persons responsible for taking vapor readings shall be fully trained with use of the instrument and the interpertations*of the instrument readings. Readings are to be taken with a probe at the fill opening while the air educter is on. No hot work (drilling, cutting, etc. ) shall be performed until a reading of .10 LEL (lower flammable limit) has been acheived. Once a reading of . 10 LEL is established, one hole is to be drilled where the access opening is to be cut. After the hole has been drilled, another reading must be taken with a probe at the drill hole to insure that a safe atmosphere has been established. V. CUTTING THE ACCESS OPENING Once a safe atmosphere has been established, an opening shall be cut to the minimum deminsions of 20"x 20" . Ventilation and vapor readings must continue throughout this process to ensure that a safe atmosphere is maintained. The saw blade is to be oiled during the cutting process to reduce friction and the possibility of sparks. Prior to the final cut, the plate is to be supported to prevent it from falling into the tank.