Small air separation unit in place before the strength test and gas-tightness test provisions.
First, if the manufacturer has made strength test and has a certificate of conformity of the pressurized equipment, it may not be strength test only gas tightness test, but if the small air separation unit is found to have traces of damage or a site has been partially modified or parked for too long, the strength test should be made.
Second, the strength test should be applied to the water pressure method, the application of pneumatic pressure to equipment where water is not suitable as a medium or where the structure is complex. (distillation tower, plate fin heat exchanger, adsorption filter, etc.)， the pneumatic test process must have reliable safety measures and can be carried out after a study and decision by the relevant authorities
Third, the pressure and stopping time of the strength test and the gas tightness test shall be in accordance with the design or technical documentation of the equipment.
Dear Air Separation has reliable safety measures in place for all tests of small air separation units, which are required to comply with the provisions of the air separation unit design and technical documentation.
