In addition to cleaning and filling the tank in place the outside fill and vent to the tan k needs to be sealed so that oil can no longer be delivered to the out of service tank.
Oil tank filling procedure.
Using the icc as adopted by new york city as the 2008 nyc mechanical code as example we have this.
The fill pipe material shall be 2 in 50 mm schedule 40 black steel threaded joints in the fill piping shall be made fuel oil tight using joint compound conforming to can ulc s642 m compounds and tapes for threaded pipe joints or equivalent.
The construction code allows for these oil tanks to be closed in place as some tanks are located beneath obstructions such as patios decks driveways and landscaping and removing the tank would cause a greater disturbance than just filling the tank in place.
Some home owners balk at this test fearing that the pressure of the test procedure will burst an oil tank that is about to fail.
The oil processing and filling unit suck the oil from drums to the heating tank then degassed unit and filled in to the transformer.
Oil storage tank fill vent piping specifications codes.
The process continues until oil appears in stopper orifices.
Fill the oil up to the desired level in the oil level gauge.
Transformer oil filling is in progress open the radiator valve one by one until such time the radiator is filled with oil.
You must also back fill the area excavated to access the tank.
While heating fuel oil isn t considered toxic nor is it flammable in its uncompressed state the odor of a fuel oil spill in the basement or other area can permeate the entire house and sicken susceptible individuals.
Following basic heating oil tank overfill prevention procedures helps prevent accidental oil spillage inside your home.
If the transformer is equipped with an expansion tank the end of filling is signaled by the oil reaching the marks in the oil indicator.
An oil purifier is connected to the transformer tank and the oil is supplied at the rate of 1 5 3 tons per hour.
Fill and product piping connections to domestic storage tanks.
Tanks containers and other equipment such as barrels drums bulk containers separators heater treaters vacuum trucks storage tanks frac tanks flowback tanks interconnecting pipes produced water tanks and tankers confined spaces where gases or vapors can accumulate etc at the well site and at treatment facilities require periodic repair that often includes hot work.
Typically a 4 by 4 area is excavated to safely access the tank top.
Ron i have not seen an explicit limit on elbows on oil tank fill or vent piping though one would want to keep the number to a minimum.
Soil testing for oil tank leaks oil tank pressure testing for oil tank leaks oil tank fill pressures to what pressure is an oil tank subjected during an oil delivery.