COMPLIANCE INFO_1999-2005 - Laserfiche WebLink

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5.1.1.5.Erect barricades,etc.,to prevent unauthorized vehicle or pedestrian traffic. 5.1.1.6. Inspect,a minimum of once a day,the excavation and 6.. surrounding area. I4" Asphalt Concrete 5.1.2. For additional information on excavation,trenching and f shoring safety practices,consult OSHA's"Construction Industry Standards,"Part 1926,Subpart P;and"Fall Protection Rules 24" and Regulations." = [4s"] 12" [36"] No 5.1.3.The minimum depth of the excavation is normally H— Traffic determined by the presence or absence of groundwater and the presence or absence of traffic at the site.These dimensions are FE critical to the successful installation of a tank and are often regulated by code. 12" _ 5.1.4. For additional requirements and specifications,refer to federal,state and local codes; NFPA 30,30A and 31;API RP Note:Number in brackets refers to 12-foot tanks. 1615;PEI RP100;and FIGURE 5-1 and FIGURE 5-2. FIGURE 5-2 5.1.5.In all cases,the depths of cover given in 5.1.5.1.and in 5.1.5.2.are minimums. AWARNING 5.1.5.1.Tanks subjected to traffic loads(H-20 loads)must have In a nontratfrc installation, ensure that the areas above the a cover depth of at least 18 inches of backfill [36 inches for tanks are not subjected to traffic or other types of loads, 12-foot tanks]plus 6 inches of reinforced concrete or 9 inches which could cause tank damage and result in death, of asphalt. (See FIGURE 5-1.)In a wet condition,sufficient serious personal injury or property damage. overburden and/or an appropriate anchoring system must be present to offset buoyancy of the tank. 5.1.5.3.The maximum burial depth is 7 feet of cover over the top of the tank.Deviation from this may be permissible with prior written authorization from Xerxes.Call your Xerxes representa- tive for a special quotation prior to tank purchase if the burial — depth is to be greater than 7 feet. s 6" 5.1.5.4.Asphalt and concrete pads must extend a minimum of ,. ..... ... 12 inches beyond the tank in all directions. I I II 5.1.5.5.An unattached manway riser(if present)must not 18" 18" transmit load from the concrete slab to the tank.A minimum —[36°] ^[36"]- space of 6 inches must exist between the bottom of the riser I I = Traffic and the top of the tank. = — 5.1.5.6.Traffic loads from the top slab must not be transmitted I to an attached sump or riser.A minimum space of 3 inches must exist between the riser or sump and the slab. ---------------------- 12" 5.2.TANK SPACING Note:Number in brackets refers to 12-foot tanks. 5.2.1. GENERAL 5.2.1.1.The following are minimum spacings and must be FIGURE 5-1 increased as needed to accommodate deadmen or anchor slabs. (See Section 6.) 5.1.5.2.Tanks not subjected to traffic loads must have a cover depth of at least 24 inches of backfill[48 inches for 12-foot tanks], 5.2.1.2.Always provide sufficient clearance to allow the or 12 inches of backfill[36 inches for 12-foot tanks]plus 4 inches deadmen to be set outside of the tank"shadow."(See F/GURE5�3.) of reinforced concrete or 6 inches of asphalt.(See FIGURE 5-2.) In a wet condition, sufficient overburden and/or an appropriate anchoring system must be present to offset buoyancy of the tank. 10