Electrical discharge machining (debris) to be carried away and the insulating properties of the dielectric to be restored. Adding new liquid dielectric in the inter-electrode volume is commonly referred to as "flushing." Also, after a current flow, the difference of potential between the electrodes is restored to what it was before the breakdown, so that a new liquid dielectric breakdown can occur. The erosive effect of electrical discharges was first noted in 1770 by English physicist Joseph Priestley. Two Russian scientists, B. R. Lazarenko and N. I. Lazarenko, were tasked in 1943 to investigate ways of preventing the erosion of tungsten electrical contacts
Special measures the action plan has been completed and all points satisfactorily addressed, then they will refer the school back to Ofsted and ask them to schedule a second Section 5 Inspection. If Ofsted agree with HMI’s judgement, the school is then removed from the special measures category. It is worth noting that during an Inspection an HMI can change the nature of the Inspection to a Section 5, and remove the school from Special Measures upon completion. Support for schools that enter special measures comes in a variety of forms, and varies from local authority to local authority. Typically though schools