Checks pump nozzle loads to API 610.  You can check every load case at once.  Suction and discharge piping can be in the same or different files. 

This script also lets you specify factors which increase the allowables for wind/seismic and or standby cases.  These factors are not in accordance with API610 but are available for use where acceptable to your project and pump vendor.  For instance, WRC 449 suggests that pumps on standby may be able to withstand loads 50% above the limits normally imposed on operating pumps.

Description: 

High pressure and high flowrate gas pressure letdown valves can generate severe acoustic vibration, potentially causing fatigue failure in a short period of time.  This script carries out an Acoustically Induced Vibration check on your piping system using the Carucci & Mueller / Eisinger method. 

The script gives you the ability to check a single line or your entire flare system at once.  Simply pull together a CAESAR II model of the system and provide data for the various valves.  The model doesn't need to be perfect either; providing correct lengths, diameters and wall thicknesses is sufficient.  The script will combine the effects of simultaneously operating valves if applicable.

See Tutorial 3 relating to this script.

28th September 2008 - Fixed problem with weight deflection check and added ability to work with Z-vertical models.

Generates a summary of your pipe stress model in Excel format. If you currently spend time entering data into spreadsheets summarising input parameters, maximum stresses etc. for formal calculations, you may appreciate the time and effort you can save with this script.

The script also includes sensibility checks such as 'lifting off supports' and 'excessive sag', which means it can be quite useful to run a summary of early revisions of your calculation that may not require documenting.

Checks all the trunnions in your pipe stress model in one go, using the Kellogg method.  Salad determines trunnion lengths, loads and orientations, you just need to tell it the trunnion restraint nodes.  Of course you need to model the trunnions in your stress model for this to work.

Outputs a restraint summary report in local co-ordinates.  Useful for models with skewed pipe runs.

Performs an API 617 check on up to 10 load cases at once for a two nozzle machine.  You can specify the nozzle to resolve about and a multiple of API 617 if required.

Outputs a Nozzle 'Restraint Load Summary' in local co-ordinates relative to a cylindrical vessel.  Useful for a vessel with an off-axis or hill-side nozzle.  Salad determines the vessel longitudinal axis and the nozzle radial axis automatically, assuming you have modelled these in your stress model.  Check out the 'Nozzleload' function in the Help file for further information.

Checks local stresses induced in the pipe wall due to a line load (bare pipe resting on steel) or a point load (bare pipe on round rod).

Provides a displacement summary report for a single node.

Estimates stresses and linestop loads for rack piping with an expansion loop.  Uses CAESAR II database to calculate expansion.

Checks pipe wall thickness for pressure hoop stress as per ASME B31.3.  Uses CAESAR II database for Allowable Stress.