Since we moved into our ex-farmhouse some six or seven years ago, we have worried about the old 2000 litre oil tank hidden away around the back of the house. It was old, rusty, and a bit lop-sided. In short, likely to go at any time. Losing lots of oil is not something to look forward to as oil, even a few years ago, is not cheap and cleaning up an oil spill is especially expensive particularly if it gets into any kind of water course.
The converted barns behind us, sold off long before we bought the house, have mains gas but when we enquired about getting a supply it was in the too difficult and expensive category (lots of strips of land to cross and Transco’s lack of desire to provide any help such as definitive information on how they would make the land they crossed good). So, we stuck with oil, put a new oil fired boiler in our boiler room (actually, a converted chimney that projects into the downstairs bathroom).
Finally, we could stomach the risk no longer and after a quick update of three competitive quotes, we called in a firm to change the tank over to a new double-bunded (i.e. double-skinned) plastic beast with a 2500 litre capacity.
It only took a couple of blokes a few hours to build a new platform behind the current tank (plastic tanks need more support than metal tanks). This was built of some concreted in breeze blocks supporting a platform of concrete slabs. The base is a lot higher than was the case for the old tank. They pumped what little oil we had in the old tank over to the new, disconnected it and took it away. The new tank was connected in with a little bit of extra pipework. It worked straight-away, no airlock problems.
The volume sensor works with little unit we plug into a mains-socket in the house so we no longer have to go out in the cold, and the rain and the dark to pull a little valve release and check where a small ball floats to on a measuring device on the side of the tank. Now we can simply read the display on a little plugged in device in the utility room. Seeing more readily how quickly the oil goes down may make our use of the boiler a little more economical.