How a Pressure Vessel Tank is fabricated under ASME Code

Belows show an Autocad Drawing of a tank to be fabricated by our company. It is an air compressor tank capacity 1,000 liter Design Presure 12 Barg.

Drawing of an air receiver tankThe raw materials are usually divided into three parts on the main body.

The shell top and bottom are usually formed by a forming machine.

The body is rolled by a rolling machine. Then the three parts are welded together to form the main tank body.

This picture shows the body ( 2 pieces join together) without the end caps, shown at the side.

Assembly of shell body and cap

Assembly of shell body and cap

Next, this picture shows the assembly of the end caps and the body together. Note that the joints are not fully welded as the vertical and horizontal shape of the tank is of utmost importance.

Both end caps are welded to the tank body

Both end caps are welded to the tank body.

Next the flanges and the manhole are connected to the shell body. These are usually standard pipes cut into the desired length and welded to the body.

Nozzle Pipes

Standard flanges are used for the manhole as well as for the outlet and inlet flange. In this case, the manhole size is 16″, hence the standard ANSI flange of 16″ Diameter was selected and welded to the pipe.

Flange Tank

Next, the saddles are welded to the main body.

Welding the saddles to the tank

Welding the saddles to the tank

Finally, the manhole cover is closed up.

tank-7

Once all the parts are assembled together, it is fully welded by our qualified welder. Welding are in compliance to the ASME code.

Finally, as required under the requirement of the customer, the tank is tested against leakage.

Tank fabrication testing

Tank fabrication testing

A new coat of primer is painted on the tank before delivery to site.

Delivery tank

Delivery tank

Loading tanks to the crane

Loading tanks to the crane

This is the final site installation of the air tank at the site. For piping works to the air tank, this will be categorized in another post.

Complete installation tank at site

Complete installation tank at site

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