Washington Pre-instruction Checklist for High Pressure Boilers is a form used to ensure that high pressure boilers are in safe working condition before being put into operation. This form is used by inspectors to identify any potential safety issues and to ensure that all necessary safety measures are in place. The checklist includes items such as the inspection of safety valves, pressure gauges, relief valves, water levels, fire extinguishers, and other areas of the boiler. It also includes a checklist of tests that need to be performed on the boiler to ensure proper operation. There are three types of Washington Pre-Inspection Checklists for High Pressure Boilers: the New Boiler Checklist, the Annual Boiler Checklist, and the Three Year Boiler Checklist. The New Boiler Checklist is used when a new boiler is installed, and the Annual Boiler Checklist is used to check the condition of the boiler annually. The Three Year Boiler Checklist is used to assess the condition of the boiler every three years.