Stress calculation for chlorine pipelines
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It’s my first time working with chlorine pipelines: normal temperature, 0.1 MPa pressure, DN125 size. The pipelines have no insulation – is it still necessary to provide fixation and compensation? I see someone earlier mentioned “highly hazardous media” and that stress calculations are required. In which code is this specified? Is stress calculation still required even without insulation? What are the requirements for valves?
Whether to install supports depends on the length of your pipeline; if it’s a 200-m long pipe, supports are necessary even for DN500 pipes.
2675 Topics 0 Audience 3895 Points Engineer TA’s Daily Mood Happy 3 days ago Days logged in: 12 days Consecutive logins: 2 days Check occasionally II Points: 3895 Highlights: 0 Topics: 2675 Posts: 10738 UID: 545 Listen to TA Send a message Rattan chair Posted on 2011-7-9 00:23:05 | View only this author For manual calculations, empirical formulas from ASME B31.3 are generally used for segmented assessments; it is important to consider the applicable range of these formulas and select appropriate calculation segments. Using fixed supports as boundaries, values less than 208.3 do not require detailed calculation. For those that do not meet the requirements of the formula, calculations are carried out using the formulas provided in the pipeline design manual; the stresses at branches and direction changes are primarily calculated, and secondary stresses are then evaluated to determine whether the requirements can be satisfied. Now, manual calculations are used very rarely; computer calculations are more common, and detailed calculation conditions need to be specified. The conditions include operating conditions, pipe material, material specific gravity, pipe axonometric view, valve parameters; for those with spring supports, spring parameters must also be provided. It is also necessary to indicate whether wind loads need to be taken into consideration along with providing the relevant parameters ； For those for which pipe racks have been designed, the type and location of the pipe racks must be clearly specified, and they are to be verified by the piping and mechanical engineering team; for those without designed pipe racks, the piping and mechanical engineering team is responsible for selecting them, while the piping engineering team provides the necessary conditions for the structure.