Show pneumatic test, Mechanical Engineering

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Q. Show Pneumatic Test?

Pneumatic testing presents hazards that must be addressed as part of the engineering design of the pressure vessel.

Due to the additional hazards of pneumatic testing, vessels shall be designed to minimize the possibility of failure during the test. The vessels shall be constructed of materials that ensure fracture toughness during the test. Additional nondestructive examination may be required of main seams, nozzle attachments, and some structural attachments.

All such nondestructive examination shall be performed in accordance with Section VIII methods and acceptance criteria.

Large diameter, low pressure designs, vessels with exceptionally large volume, service that would not allow residual water in the process, and designs that would force great over-design of the vessel and foundation only to support a water full test, may be considered for pneumatic testing.


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