Technical Board

This is the place where I occasionally post an article on the various process design subjects. I hope this helps me reach other people working in the oil and gas industry more easily and effectively than publishing papers in the chemical engineering magazines.

I don’t think these notes are flawless or perfect. They may not even offer the best solutions or address all aspects of a particular subject. But I hope it will be useful for those in our industry that are yet ready to take the hardship of reading!

Visit Chemwork discussion forum at LinkedIn if you would like to share your comments with others.

Safety & Flare
Date of Release
Effect of Different Parameters on Depressuring Calculation Results 01-Nov-2010
Fire Heat Flux to UnWetted Vessel 05-Nov-2010
Set Depressuring Model Dimensions to Get More Accurate Results 28-Feb-2011
Validation of Hysys Depressuring Utility 12-Mar-2011
Pilot Operated Relief Valve Hydraulic Requirements 16-Apr-2011
The Basis of API Correlation for Fire Relief of Un wetted Vessels 25-Apr-2011
Setting MDMT Based on Hysys Depressuring Results 11-Jun-2011
A Complete Guideline for Blocked-in Condition 26-Sep-2011
Select the Right Relief Valve - Part 1 28-Apr-2012
Fire Heat Flux to Unwetted Vessel for Depressuring Calculations 25-Nov-2012
Designing an Explosion Proof Flare System 30-Apr-2013
Rotating Equipment  
A Look at Centrifugal Pump Suction Hydraulic – Part 1 05-Jan-2011
Higher or Lower Density; Which One Governs 04-Apr-2011
A Look at Centrifugal Pump Suction Hydraulic – Part 2 25-May-2011
What Two Phase Flow Regime Maps Narrate 12-Nov-2010
Misleading Definition by Crane TP-410; Head Loss Coefficient 30-Jun-2011
Select the Best Fitting Pressure Loss Correlation 04-Aug-2011
Contraction, Expansion, Pressure Drop 16-Aug-2011
Estimate Valve Pressure Drop Correctly 01-Sep-2011
Manual Valves - Flow Coefficients 28-Feb-2012
Simple Hydraulic Rule, Wide Application Range 29-Aug-2013
Erosional Velocity Limit 31-Oct-2014
P&ID Development & Process Control  
Is 600mm Sufficient to Keep BDV Functional? 20-Nov-2010
A Guideline for Design Pressure - Part 1 26-May-2012
A Guideline for Design Pressure - Part 2 30-Jul-2012
Static Equipment  
How to Specify Liquid-Liquid Separation 08-Dec-2010
Man way Is Not Only Man Way 22-Jan-2011
Broaden Your Knowledge about Condensate Pot 30-Nov-2011
Three Phase Separators - Times Definition 31-Oct-2012
Three Phase Separators - Inlet Devices 28-Jan-2013
Three Phase Separators - Gas Internals 09-July-2013
Three Phase Separators - Liquid Internals 25-Oct-2013
API-521 Flare KOD Design and Even More - Part 1 03-Jan-2014
API-521 Flare KOD Design and Even More - Part 2 21-Mar-2014
Questions You May Be Asked During an Interview 12-Feb-2011



All right reserved to Saeid Rahimi