Testing for Petroleum outside of a filling
station environment

This article is extracted from the December APEA Bulletin, written by Rob Collins.

London Fire Brigade’s Petroleum and Transport team has introduced new equipment and procedures for the testing of petroleum outside of the petrol filling station environment. Petroleum that is stored dangerously or illegally in domestic premises or elsewhere can be tested on site with the aid of a hydrometer, allowing for results that are instant and can lead to a safer and speedier resolution of incidents.

In collaborative work with the Brigade’s scientific advisors, Bureau Veritas, a simple, safe and conclusive method of testing has been devised. The density of a liquid can be measured with the use of a hydrometer. Using this equipment petroleum inspectors can now test on site with full confidence that the results provide an accurate, conclusive result under the correct conditions.

Simply fill the tube with the fluid using a “syringe pump” and allow it to settle. Carefully lower the hydrometer (set for petroleum) and allow it to settle in the fluid; if it’s petroleum it will “float” within a given range marked on the hydrometer. Lastly, the temperature of the fuel is recorded as it can be used for any later investigation (extreme temperatures may have an effect as can impurities in the liquid).

A new investigation report form has been produced alongside this new procedure, to ensure a complete investigation takes place. Then a decision can be made on the course of action. This may be to seize the petroleum and have it removed safely if it is deemed excessive or stored improperly.

The correct personal protective equipment and cleaning procedures are essential. This includes ensuring that ATEX certified electrical equipment is used near potentially explosive atmospheres, as well as appropriate eye and skin protection when coming into contact with potential petroleum spirits.

Our thanks to Liane Crouch at Bureau Veritas for her continued support of our team.

If you would like further information please contact our Petroleum Inspector Rob Collins:
Robert.Collins3@london-fire.gov.uk

Further advice on London’s approach on domestic and nonworkplace petroleum storage can be found on:
https://www.london-fire.gov.uk/about-us/services-andfacilities/services-we-offer/petroleum-enforcing-authoritypea/#:~:text=A%20person%20keeping%20over%2030,litres%20will%20require%20a%20licence.
https://www.london-fire.gov.uk