Safety Archives

Reliable and accurate sampling system for natural gas applications

NG plant with measuring lines shows reliable and accurate sampling system for LNG applications.

My previous article in this series explained what are the main issues in obtaining a representative sample in NG applications.

This case study demonstrates a reliable sampling solution currently used by plant operators. It helps plant operators to obtain representative samples.

What are the main issues in obtaining a representative sample in NG applications?

NG plant with measuring lines shows issues in obtaining representative sample.

In this article, I present the major issues associated with obtaining a representative sample in NG applications. The article explains what is representative sampling, and why sampling is important in the natural gas industry. I discuss factors that determine what should be a suitable sampling frequency in a process, and which sampling standards can be followed to ensure representative sampling.

Several major issues in obtaining a representative sample, and common design flaws that lead to poor sampling are presented and discussed. In addition, I present how a suitable probe length can be determined and how the probe should be installed. The different types of commonly used sampling probes are also compared and discussed.

API 14.1 conventional DBB valve configuration Custom designed DBB gas sampling valves DBB valve Double isolation Dual flow sample probes flushing GPA 2166 isolation valve Natural gas industry NG NG application pressure differential probe length representative sample representative sample in NG applications sample probe Sampling conditions Sampling frequency sampling location sampling standards Single flow sample probes

How to avoid hydrate formation during underground natural gas storage in salt caverns

3d image of natural gas storage in salt caverns and how to avoid hydrate formation.

In this case study, I focus on how to avoid hydrate formation in natural gas pressure measurement pipelines. I describe the traditional approach to avoid hydrate formation during natural gas storage in salt caverns. Furthermore, I explain a patented customer solution that AS-Schneider has industrialized.

cavern storage copper block copper block with an integrated shut-off ball valve copper tube heated sampling probe hydrate hydrate formation initial shut-off integrated shut-off ball valve measurement measuring lines measuring pipelines natural gas measurement natural gas storage salt caverns sensor tube underground natural gas storage

Underground natural gas storage in salt caverns and the challenge of hydrate formation

3d image of natural gas storage in salt caverns and the challenge of hydrate formation.

Many of my customers use natural gas storage facilities in order to balance out low and peak demands over the course of a year.
Over the years, I have gained a lot of valuable experience on this topic. This knowledge is what I would like to share with you in the context of a blog article.

cavern storage Depleted Aquifers Depleted Reservoirs hydrate hydrate formation salt caverns underground natural gas storage

4 most important mechanical isolation methods of process piping & equipment

Oil and gas plant with closed and locked valve shawing different isolation methods.

Positive isolation is the isolation of process piping, equipment, or vessels from hazardous materials such that it is impossible for the material to enter the work area. Positive isolation must remove all risk of accidental reconnection to the source of the hazard due to equipment failure or operator error. There are several methods of achieving positive isolation some of which are discussed below.

air gapping isolation Blind isolation chanical isolation methods DBB valve Double block & bleed isolation isolation of mechanical equipment isolation valve mechanical isolation Positive isolation Single valve isolation Spool removal

Case Study: High temperature DBB valves for steam injection – A common enhanced oil recovery method

Infographic of solar steam process (steam injection) as an enhanced oil recovery application.

Case study about high temperature Double Block & Bleed valves for steam injection. We have successfully installed the DBB valves at the Amal oilfield in Oman which uses “green” steam, generated at the Miraah solar thermal facility.

Amal oilfield Case Study dbb valves double block and bleed valves Enhanced Oil Recovery enhanced oil recovery method EOR High temperature DBB valves Instrument Monoflange Miraah solar thermal facility OS&Y / Needle / Needle pressure transmitter / pressure gauge Process Monoflange PT/PG steam steam enhanced oil recovery application steam generation steam injection

5 important facts for a safe and transparent (remote) third-party inspection

Safe and transparent through your third-party inspection (remote inspection).

We are all facing many restrictions due to the pandemic. Therefore, we need to find ways to still provide the best possible support to our customers. One digital service that our customers can use is our third party inspections – better said remote inspections.
Our customers can use the remote visual inspection to check the valve quality before shipping.

Fugitive emission test high-pressure seat test Liquid penetrant examination test low-pressure seat test non-destructive examination tests Positive material identification test Pressure test remote inspection Shell test third-party inspection

Resistant and safe bellow-sealed needle valves for a national space agency

Bellow-sealed needle valves for national space agency.

This blog salutes all the space agencies working for space research & technology. AS-Schneider joins you at the cutting edge because we support the aerospace industry leaders and supply specific bellow-sealed needle valves for their space projects.

bellow-sealed needle valves cycles of operation national space agency specifications Technical requirements

High pressure valves up to 15,000 psi in offshore application

Offshore platform with high pressure valves up to 15,000 psi.

We all know, pressure is one of the most important process parameters, in the field of measurement and control. Pressure measurement under extreme applications are done for enormously high-pressure range. These measurements must be safe and precise, for which we need reliable valves to maintain tight control and regulation at these high pressures.

15000psi anti-blowout chemical deep-sea offshore Differential Pressure measurement high pressure application High Pressure Needle Valves high pressure valves non-removable offshore oil and gas petrochemical power Pressure measurement transmitter

Chemical injection quill for oil & gas application

Chemical injection quill for oil and gas application.

To support users in their proper planning and technical evaluation, I would like to share some information about one less-familiar product in the industry, the chemical injection quill.

API 6A API PSL 3G PR2 applications ASME PTC 19.3 TW-2010 check valve chemical feed line chemical injection quill Corrosion Inhibitor dbb DBB valve FEA Finite Element Analysis H2S Scavenger hydrate inhibitors Hydrate solidifies injecting additives injection quill Integral Check Valve Isolation mechanical device Methanol Monoflanges oil and gas process media process pipeline Process to instrument valves regulations sampling quill Standards VariAS-Blocks