#PIPEROLL LEVEL 77 CODE#

Resonance with imposed or fluid-induced vibrations.

Excessive stresses in the supporting (or restraining) elements.

Excessive thrusts and moments on connected equipment (such as pumps and turbines).

#PIPEROLL LEVEL 77 CODE#

Piping stresses in excess of those permitted in the Code.The code ASME B 31.3 specifies under clause 321.1.1 the ayout and design of piping and its supporting elements shall be directed toward preventing the following. Proper support selection should be the objective of all phases of design and construction. The correct and economical selection of the supports for any piping system usually presents difficulties of varying degrees, some relatively minor and others of a more critical nature. Structural attachments are elements that are welded, bolted, or clamped to the pipe, such as clips, lugs, clamps, clevises, and stops. They include rod hangers, spring hangers, sway braces, turnbuckles, struts, anchors, saddles, rollers, brackets, and sliding supports. Pipe supports and hangers are devices which transfer the loads from the pipe or the structural attachment to the supporting structure or equipment. The pipe may be secured to this member with a pipe support. Pipe is rested on or secured to a support member usually of a standard structural shape (I-beam, wide flange beam, angle, channel etc.). The designs are only limited by the imagination of the engineer and designer, as literally thousands of different designs have been used for special purposes. There are a number of typical pipe supports that can be installed to support dead weight loads, and restrain the pipe for thermal and dynamic loads. Hangers are also referred to as supports.

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Piperoll level 77