Engineering Stack

Blog Posts

On-Line / In-Operation Leak Repair of Piping Components

Published on 23 Apr 2019 by Tadd Pham

This quick reference is to provide guideline on the minimum necessary for making temporary leak repairs to process piping. This quick reference should be followed when making on-line repairs to piping components containing materials that could cause injury/illness to facility personnel, equipment damage, damage to the environment or community, or …

Tags: repair leak pipe

Subsea Inspection, Monitoring, Maintenance and Repair Philosophy

Published on 20 Apr 2019 by Emma Leoni

This paper helps defining the Inspection, Monitoring, Maintenance and Repair requirements for the subsea and flowline systems.

Consideration for Inherently Safer Process Options

Published on 20 Apr 2019 by Arun Patel

The search for inherently safer process options must begin early in the process life cycle, and never stop. The greatest potential opportunities for impacting process design occur early in the invention and development of processes. It is never too late to consider inherently safer alternatives.

Control Valve Leakage Test Requirement in Natural Gas and Monoethylene Glycol (MEG) Environment

Published on 18 Apr 2019 by Tadd Pham

Due to the possible presence of toxic gas in an operating facility, and in order to avoid environmental implications, the Fugitive Emission from some valve packing have to be strongly reduced using specific and proper material, particular design, dedicated devices such as bellows seal to achieve low emission levels on …

The Role of Inherently Safer Design Concepts in Process Risk Management

Published on 17 Apr 2019 by Arun Patel

This part 2 discusses the role of inherently safer design concepts in process risk management. How process risk management strategies can be categorized, in order of decreasing reliability, as inherent, passive, active, and procedural.

Inherently Safer Chemical Process

Published on 15 Apr 2019 by Arun Patel

Inherently safer design represents a fundamentally different approach to chemical process safety. Rather than accepting the hazards in a process, and then adding on safety systems and layers of protection to control those hazards, the process designer is challenged to reconsider the process and eliminate the hazards.

Control Valve Failure Scenarios

Published on 14 Apr 2019 by Tadd Pham

This article discusses some of the scenarios for an upstream control valve failure that may arise from the failure or inadvertent opening of a control or block valve segregating high and low pressure equipment and examples of mitigating the failure.

Subsea Protection Philosophy

Published on 10 Apr 2019 by Emma Leoni

Subsea Protection's goal is to define the external protection philosophy for subsea systems (manifolds, pipelines, cables, control systems) against drop objects.

Turrets - Moorings - Risers overview

Published on 09 Apr 2019 by Brysen Lin

This document describes the development of turret and swivel systems which allow 'n x 360 degrees' rotation have been the key technologies which have allowed FPSOs to be used in all met-ocean environments.

Effects of Varying Temperature or Molecular Weight

Published on 02 Apr 2019 by Jared Tomlinson

As people always say, things change. And nowhere is this more true than in temperature rate and molecular weight.

Principles of Impeller Sizing

Published on 01 Apr 2019 by Brysen Lin

Gas moves into the wheel through the inducer, the function of which is to provide a smooth (efficient) transition into the "impeller" section of the wheel. The gas enters the "impeller" section and is moved away from the center, and at the same time velocity is imparted to the gas. …

Dispersed oil removal from produced water using skimming tanks and vessels

Published on 09 Feb 2019 by Ravi Shekhar

Skimming tanks or vessels are gravity-based separation equipment that is designed for continuous separation of oil droplets from the water. Skimmers are often provided for surge protection and large slug removal. Droplets above a specified diameter will rise to the surface and be skimmed off the water surface.

Subsea Sparing and Tooling Philosophy

Published on 18 Apr 2018 by Emma Leoni

This document is to describe the sparing and tooling requirements for the manufacture, testing, installation, pre-commissioning, commissioning and operation of the field development, for the subsea flowlines, umbilicals, subsea control system, subsea equipment and risers.

Tags: subsea spare tool

Subsea DeCommissioning Philosophy

Published on 20 Mar 2018 by Emma Leoni

This document is to detail the requirements for decommissioning of the subsea systems, flowlines and wells.

Subsea Commissioning Philosophy

Published on 26 Feb 2018 by Emma Leoni

This document is to detail pre-commissioning, commissioning, start-up and performance testing requirements for the subsea system.