Laserfiche WebLink
I 0 • <br />1 Stockton Nissan Waste Antifreeze Storage Tank <br />Secondary Containment Calculation <br />1 Secondary Containment Volume <br />length width height volume gallons <br />1 <br />312 153 5 1033 <br />1 <br />less volumes lost by interferences <br />tank 1 53 37 2.5 21 <br />tank 2 53 37 2.5 21 <br />' <br />tank 3 74 48 2.5 38 <br />tank 4 110 46 2.5 55 <br />berm 1 24 24 5 12 <br />total loss 148 <br />Net Secondary Containment 885 <br />1 <br />Tank Volume 490 <br />Percent Containment 181 <br />1 <br />Design of tank: <br />1 <br />The tank is a 490 gallon polyethylene cylindrical tank mounted vertically. The <br />tank is secured to the concrete floor by three Y2" anchor bolts. The tank is fitted <br />overfill protection which alarms if the tank's contents reach 90 percent of the tank <br />' <br />volume. The tank is translucent allowing the direct viewing of the liquid depth in <br />the tank. The overfill protection was tested and were found to be in good working <br />1 <br />condition and properly calibrated. The tank was inspected internally and <br />externally a was found free of leaks, cracked welds and scrapes. The <br />polyethylene tank is uncoated. The polyethylene is compatible with waste <br />antifreeze. The tank's exterior is natural polyethylene and is free of any scrapes <br />1 <br />or nicks. Inspection of the secondary containment free on any signs of leakage. <br />The concrete floor is in good condition and free of any major cracking. The tanks <br />1 <br />piping is 1" copper pipe with brazed connections. The tank system has two air <br />operated diaphragm pumps for pumping antifreeze from the collection station to <br />1 <br />the tank. Inspection of the pumps and plumbing did not show any signs of <br />leakage. The piping is well supported and meets the criteria of ASME 831.3. for <br />process piping. <br />1 <br />Secondary Containment findings: The secondary containment systerrl is of <br />sufficient capacity and condition for the containment of releases from all nks <br />' <br />and ancillary equipment. Initials: <br />1 <br />Stockton Nissan Waste Antifreeze Storage Tank <br />