Wetstock Reconciliation at fuel storage facilities - Carrickfergus ...

11. Glossary of termsAquifer – a permeable rock that stores groundwater and allows it to flow readily into a well or borehole.Calibration – correlation of the readings of an instrument with a standard.Cumulative – increasing in amount by successive additions.Groundwater – the water in the ground below the water table.LRP – Lead Replacement Petrol.Pollute – to contaminate or defile the environment.Risk assessment – a process of identifying hazards, assessing the likelihood of them happening and estimating the possibleconsequences. The assessment will then go on to identify the ways of removing the hazard or minimising the consequences.Statistical inventory reconciliation – the use of a statistical method to monitor the movement of fuel around the site and to identifyany discrepancies.Totalisers – a device on a fuel dispenser showing the total number of litres of passing through that dispenser.Variance – the difference between the measured volume of fuel and the volume of fuel estimated by book-keeping.Vapour recovery system – the pipework and associated equipment used to connect vapour emission sources and feed them to a centralcollection point for recovery.Volatile – evaporates rapidly.Wetstock reconciliation – mathematical calculations to compare the measured volume of fuel with the volume of fuel estimated bybook-keeping and to identify any discrepancy between the two volumes.© Environment Agency15