Engineering Stack

Learn, share and advance your professional career

Featured Posts


Comparing costs of gas and many types of fuels
Comparing costs of gas and many types of fuels

Consideration of practical replacements for gas such as coal, heavy fuel oil, middle distillates, LPG and vice versa.Fuels considered most practical replacements for gas include coal, heavy fuel oils, middle …

Cause and effect of exceeding service ratings of heat tracing materials
Cause and effect of exceeding service ratings of heat tracing materials

The following lesson learned outlines an installation of pipeline heat tracing for a new process unit within an existing chemical/petrochemical facility. The system design consisted of self-limiting cables for process …

Natural gas flow meter measurement types
Natural gas flow meter measurement types

Gas flow meter is a mechanical device for automatically measuring quantities of gas. Some of the more popular than others depending on application and requirements. The most important types are:Diaphragm …

Control valve maintenance and things to do to extend control valves life
Control valve maintenance and things to do to extend control valves life

April 2, 2020

Always follow the control valve manufacturer’s maintenance manuals. Typical maintenance topics are summarized here together with recommendation to extend the life of the control valves. Optimization of control valve assets depends on an effective maintenance philosophy and program. Three of …

How to control corrosion at compressor stations
How to control corrosion at compressor stations

March 15, 2020

Corrosion failures at compressor stations result from carelessness mostly on the part of the users or poor choices of material and/or configuration by the project.The following factors should be considered when studying options for the project:Coat everything underground, except ground …

Definitions of MAWP, MAP, MOP, Design Pressure, Hydrotest Pressure, Burst Pressure, Working Pressure and more
Definitions of MAWP, MAP, MOP, Design Pressure, Hydrotest Pressure, Burst Pressure, Working Pressure and more

March 4, 2020

Maximum Allowable Working Pressure (MAWP) - maximum gauge pressure permissible at the top of the equipment in its operating position for a designated temperature (e.g. maximum pressure that the weakest component of the system can handle). Note: the maximum allowable …

Steam Traps selection and advantages vs. disadvantages of each type
Steam Traps selection and advantages vs. disadvantages of each type

March 2, 2020

There are many factors that affect steam generating system in the energy industry, and multiple pros and cons in selecting a right steam trap for your application, the following are advantages vs. disadvantages of each type of steam trap to …

What are corrosion coupons and corrosion probes and holders?
What are corrosion coupons and corrosion probes and holders?

Feb. 19, 2020

Corrosion coupons, probes, holders are corrosion-sensing devices that can detect the rate of corrosion in any process environment.Corrosion coupons are probably the oldest and simple and very effective method for corrosion and erosion studies that take place in a specific …

FPSO Inert Gas [Nitrogen] Description and Design Requirements
FPSO Inert Gas [Nitrogen] Description and Design Requirements

Feb. 18, 2020

The FPSO topside typically includes a nitrogen generation and distribution system. The system should be designed to provide sufficient nitrogen for blanketing and purging of the process system in connection with minor repair/maintenance work, blanketing of methanol tanks, continuous purging …

How to effectively use Adjusts and Recycle Operations?
How to effectively use Adjusts and Recycle Operations?

Feb. 17, 2020

What are the Adjust and recycle logical operations?Adjust and recycle logical operations are examples of iterative calculation routines. That is, these operations take an initial guess and run the calculation with that guess. The result is compared against a target …

Launch your Career

Ask or Answer questions. Write blog posts. Solve issues.

Share your Knowledge

Knowledge sharing is best way to learn and advance your career.

Build Reputation

Gain points and recognized by potential employers and recruiters.

Featured Articles


High Voltage Direct Current (HVDC) effects on pipelines
High Voltage Direct Current (HVDC) effects on pipelines

A pipeline collects, conducts and discharges electric current of high voltage direct current (HVDC) origin as a result of the electric field established by the DC current transmitted through the …

Design philosophy for the flare, vent, relief, and blowdown systems
Design philosophy for the flare, vent, relief, and blowdown systems

The purpose of this document is to describe the design philosophy for the flare, vent, relief, and blowdown systems. This philosophy helps to establish the design basis for each of …

Mechanical System Isolation for offshore facilities
Mechanical System Isolation for offshore facilities

This document suggests the minimum requirements for the selection and installation of mechanical isolation devices such as isolation valves, spades, spectacle blinds, removable spool pieces, drain lines, and vent lines …

Active Fire Protection for Offshore Facilities
Active Fire Protection for Offshore Facilities

The term “Fire Protection” as used herein includes active and passive fire protection.This section, Active Fire Protection outlines the intended use of active (water and/or foam) systems to prevent or …

Passive Fire Protection for Offshore Facilities
Passive Fire Protection for Offshore Facilities

Passive Fire Protection focuses on the protection of structures in the process areas and outlines the general requirements for passive fire protection and active fire protection of structures in light …

Determining current requirements for coated lines including when pipe-to-soil potential values are estimated
Determining current requirements for coated lines including when pipe-to-soil potential values are estimated

Determining current requirements for coated lines including when pipe-to-soil potential values are estimatedTo determining current requirements for coated lines:Start survey along the line after a polarization run of three or …

Heat Tracing lessons learned
Heat Tracing lessons learned

Handling of energized tracers involves electrical and thermal hazardsWhile performing mechanical maintenance, a contractor received an electric shock while handling an energized self-limiting heating cable that was being removed from …

Estimate liquid flow rate from a pipe given horizontal and vertical discharged dimensions
Estimate liquid flow rate from a pipe given horizontal and vertical discharged dimensions

A quick and surprisingly accurate method of determining liquid discharge from an open ended horizontal pipe makes use of the formula:GPM = (2.56 * X * d2) / Y1/2Where:GPM = …

Portable Utility Hoses
Portable Utility Hoses

Portable Utility Hoses used in the energy industry to transfer air, water, steam, condensate, and nitrogen are often subject to heavy usage. If hoses are not properly maintained, safety incidents …