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Safeway <br /> Tracy Distribution Center <br /> Truck Repair <br /> Used Oil Tank <br /> Tank Wall Thickness Testing Results <br /> Safeway owns and operates a used oil tank located in the Truck Repair at the Tracy Distribution <br /> Center. Certification of the tank for use under 22 CCR 66265.192 -Design and Installation of <br /> New Tank Systems or Components requires tank system integrity testing under sub-section <br /> (k) (10): "... all new tanks and ancillary equipment shall be tested for tightness prior to being <br /> placed in use..." <br /> Safeway does not have engineering drawings or any other referenced drawings for the tank. The <br /> tank is filled by remote pumping oil from a lube pit located within the Truck Repair. Thus,the <br /> tank system comprises of an oil pipeline and a used oil tank. <br /> The technique used to determine the tank system integrity was to measure the existing tank wall <br /> thickness using a non-destructive ultrasonic instrument, and testing the pipeline hydrostatically. <br /> Following summarizes the testing results: <br /> Tank Integri1y Testing <br /> Test Date: April 22,2011 <br /> Performed bv: Dennis Miller,P.E.,Miller Engineering(STI—AST Inspector#AST RIO 128) <br /> Used Oil Tank <br /> Location: Indoors—Oil Storage Room: Middle of Truck Repair <br /> Configuration: Cylindrical: 4'-8"diameter x 8-ft long <br /> Four pipe connections on top of tank-2"diameters(Vent, double-vent,oil <br /> supply(from lube pit),access port). <br /> One tank level gauge connection. <br /> Two—7"emergency vents <br /> No bottom connections <br /> Volume: Nominally= 1,000-gal <br /> At time of testing- Filled with 40-gal of oil <br /> Orientation: West to East <br /> Construction: Welded plates <br /> Coating: Painted grey <br /> Supports: Two steel saddle-type supports welded to tank cylinder. A manufacturer's <br /> attached plate indicated"This tank is provided with an integral steel <br /> foundation and is intended for stationary installation only." <br /> Containment: Located inside 8"Concrete Block Wall—nominally 48-inch high <br /> Testing;Protocol: <br /> Metal thicknesses were measured using a Panametrics NDT,Model 37 DL Plus. The unit <br /> was calibrated in the shop to 4 metal thicknesses ranging from 0.05"to 1.5". The unit was <br /> Tank Wall Thickness Testing Page 1 <br />