INSTALL_2002 DIESEL - Laserfiche WebLink

Home Browse Search

3�Feel Tank VIII INSTAL 1.0 EXCAVATION AND BEDDING JANUARY 2001 ANCHOR OPTIONAL 1.1 The bottom of the excavation shall be covered STRAP THREADED with a minimum of 12 inches305 mm oADJUSTM inches (305 INSULATING bedding, suitably graded and leveled. Bedding MATERIAL �++ R00 and backfill material surrounding the tank, to a width and depth of 12 inches (305 mm)all r around the tank,shall be clean material. ,.` 1.2 ANCHOR t�J Where anchoring by means of a concrete pad, BOLT the tank shall not be placed directly on the pad. \ Bedding material at least 6 Inches(152.4 mm) °1 deep must be spread evenly over the ( MINIMUM dimensions of the pad to separate the tank from the pad. REMOVE LARGE ROCK FROM EXCAVi 1.6 If earthen material from the site. or other earthen iMu IM 11 MINImaterial, is to be used as bedding or backfill material, a minimum of four 1 cu.ft, samples shall be taken from different locations which are representative of the backfill material and the SLOPE AS @ ® site. Samples shall be sieved to determine if the D � material complies with this specification. ACEW 1.7 In a tidal area, the tank`bedding"material shall v v Fa be crushed stone or pea gravel. Sand and > d�' natural earthen material may be used only If measures are taken to prevent washout of.. material during the design life of the systebi. f , 1.3 Bedding and backfill material shall consist of pea 2.0 AIR TEST AT JOB SITE gravel, crushed stone, dean sand or natural 2.1 Temporary plugs and thread protectors Installed earthen materials. Crushed stone, clean sand by the manufacturer shall be removed. Apply and natural earthen materials shall be capable of compatible, non-hardening pipe sealant to passing 100%through a 1/2 inch (13 mm)sieve internal bushing threads. Permanent metal and no more than 12% by dry weight through a plugs shall be installed at all unused openings. #200 sieve(0.0029 inch(0.0754 mm)). Pea gravel shall be no larger than 3/4-inch (19 mm). 2.2 The nylon bushings in the tanks shall not be The materials shall be free of all foreign removed from the unused openings. Plugs used materials, such as but not limited to, bricks, to temporarily seal the tank for the aboveground metals, concrete and plastics, air test, but later removed for pipe installation, 1.4 The backfill material may be from the tank site if shall not be overtightened. Do not cross thread it meets this description,or it may be delivered to plugs oar instage lling nylon re bushings tank when replacing the site from another source, plugs g Q piping. 2.3 Test pressure shall be maintained at, without 1.5 Sand or natural earthen materials used as exceeding, 5 psig (34.5 kPa)while a soap, backfill shall be placed into the excavation in 12- solution is applied to the area of pipe 18 inch (305-458 mm)vertical lifts, compacted connections and welds. after each lift, at least 60% up the vertical height of the tank.