Sunday 4 November 2012

Fluid Service Categories-ASME B31.3



ASME B31.3-Fluid Service Categories
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Fluid Service Categories
Ø  Category D Service
Ø  Category M Service
Ø  High Pressure Service (K)
Ø  Normal Fluid Services

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Category D Service
Ø  Non Flammable, Non Toxic  & Not Damaging to Human Tissue
Ø  Design Pressure does not exceed 1035 kPa(g).
Ø  Design Temperature Range -29C to 186C.
Ø  Example-Utilities Services

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Category M Service
Ø  Toxic fluid
Ø  Produce serious Irreversible harm to persons on breathing or bodily contact.(even when prompt restorative measure are taken)
Ø  Chapter VIII for piping design and construction.
Ø  Example-Lethal Fluid (Poisonous)

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High Pressure (K) Service
Ø  Pressure in excess of that allowed by ASME B 16.5 flange Class 2500 rating.
Ø  Chapter IX for piping design and construction.
Ø  Example-High Pressure Fluid

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Normal Fluid Service
Ø  A fluid service that are not
Ø  Category D
Ø  Category M
Ø  or High Pressure  (K) Fluid Service.
Ø  Piping design according to first Seven chapters of code.
Ø  Example-Process Fluid

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Severe Cyclic Conditions
Ø  Displacement Stress Range “SE” exceeds “0.8 SA” Allowable Stress Range.
Ø  And the equivalent number of cycles exceeds 7000.
Ø  Or conditions which the designer determines will produce an equivalent effect.

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8 comments:

  1. may i know 1 more types of fluid.

    ReplyDelete
  2. What is the different type fluid in ASME?

    ReplyDelete
  3. Really helpfull. Thanks.
    Parfait les amis!

    ReplyDelete
  4. thanks sir, it s really helpful to us.

    ReplyDelete
  5. thanks sir, it s really helpful to us.

    ReplyDelete
  6. For the following fluid service category listed above, how to decide its piping material when you are having the design? Also does ASME B31.3 have the tables for the equivalent materials to be use for each particular fluid service category?

    ReplyDelete