Blog

Q&A – CAD Layers and Productivity

CAD Layers Is there some type of standard CAD layering for process piping.  I can find standards for electrical and architectural but nothing for piping.  Do you know where I can find them if they exist? This question has come up many, many times over the years.  In the 70’s, 80’s and 90’s when the available…

Read More

How can one know whether stub-in/stub-out or fitting connection is required or not for branch connection & in fitting type whether one should go with Tee or o’let?

Stub-out is not a correct term, this should be stub-on. Functionally if you are the piping layout designer doing piping layout then you use the information supplied on the “Branch Selection Tables” provided by the Piping Material Engineer (PME) in the Line Class specs. Functionally if you are the PME developing the “Branch Selection Table”…

Read More

Q&A – What is a bridle?

A Bridle is a special piping arrangement done by the piping designer to hold the Level Instruments for a Vessel or Tank. Level instruments such as: Level Glass (or Gage), Level Transmitter, Level Controller and Level Alarm. See example of an Instrument Bridle below.

Read More

Q&A – What is a Back Pressure Turbine and what is a Condensing Turbine?

Back Pressure Turbines: a type of steam turbine that is used in connection with industrial processes where there is a need for low or medium pressure steam. The high pressure steam enters the back pressure steam turbine and while the steam expands – part of its thermal energy is converted into mechanical energy. The mechanical…

Read More

Q&A – Differences between Basic Engineering and Detailed Engineering

“Basic Engineering”: PFDs (Preliminary because they are based on unproven data and have not been Approved by the Client) Preliminary P&IDs (Preliminary because they are based on unproven data and have not been Approved by the Client) Project Planning Preliminary Plot Plan (Preliminary because none of the equipment has been purchased so you do not…

Read More