Specifications include, but are not limited to: Tank Construction: Storage tank construction shall meet all applicable Federal and State codes, standards, and regulations, and be equipped with, but not limited to the following requirements: Entire tank shall be mounted vertically, made from quality carbon steel, ¼” thick, and shall have weather protection and secondary containment for safety and spill prevention. Tanks are to be insulated sufficiently in order to protect the contents (emulsion) from the extreme hot/freezing temperature fluctuations of the Socorro area. Bottom of the tank must have a means of cleaning out the tank. Tank is to have a minimum 24-inch diameter weatherproof manhole located on the top and/or side of the tank to allow access to the inside of the tank. Tank shall be equipped with an OSHA approved external ladder, ladder cage, and handrails for access to the top of the tank. Following is the web link to obtain spec information for the ladder: https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=10404&p_table=STANDARDS Tank shall have a minimum 4-inch over-flow and vent standpipe to extend above the top of the rated fluid level of the tank. The tank top shall be a minimum of 4 inches above the rated fluid level. Tank shall have a material quantity gauge for measuring the amount of liquid that shall be legible from ground level. Gauge calibration shall be in 100-gallon increments. The tank shall have an alarm to indicate when the tank is full to prevent over-filling. Thermostat/Heater System: Tanks shall be equipped with an asphalt oil heater which will be controlled by an adjustable thermostat that is accessible from ground level. The tank shall be equipped with an automated high temperature limit switch which will prevent over-heating. Thermostat controls shall be housed in a weatherproof box. The temperature gauge shall be provided on the tank side and positioned for visibility from ground level with a minimum range of 50 degrees Fahrenheit to 250 degrees Fahrenheit. Gauge shall have an accuracy of +1/-1 degree Fahrenheit. Temperature gauge shall be housed in a weatherproof box. Agitation System: Tank shall include an agitation system which is automatically controlled by a programmable agitation timer. Agitator rotation (RPM) shall be compatible with all types of emulsions to be able to gently stir the emulsion in the tank at intervals appropriate for material type, without causing viscosity breakdown, foaming, separation, or other undesirable effects. Timer for the agitator shall be located inside or near the control box/panel located on the storage tank and shall be equipped with a low level switch to prevent agitator from operating in the event of low emulsion levels. Timer must be multi-functional, fully programmable seven days/week, 24 hours/day, include a battery back-up for a minimum operation of 48 hours, and able to retain programming in case of a power outage. Agitator controls shall be housed in a weatherproof box.
