Monthly Archives: June 2017

What Are the Four Components of Fugitive Emission Packing Designs and Why Are They Important?

What Are the Four Components of Fugitive Emission Packing Designs and Why Are They Important?

Setpoint Integrated Solutions, Inc. has multiple options when it comes to ensuring you are meeting regulations regarding fugitive emissions. Here we spotlight Masoneilan*

When ensuring low emission packing, what components are needed, and why are they important?

  1. Packing Rings – The primary sealing rings of the set. Through management of a “packing stress level”, these rings do the majority of the sealing that we desire from the set. The materials are selected to have a combination of strength and low permeability, while minimizing frictional effects on the moving component.
  2.  Top & Bottom End Rings – These may also contribute to sealing, but the primary function is to provide a reinforcement and “anti-extrusion” effect for the packing rings.
  3.  Packing Follower – While the follower also provides extrusion resistance, its primary function is to transfer loading uniformly to the packing set. A spherical mating surface with the packing flange ensures a consistent application of load transmission.
  4.  Live-loading – Typically a series of springs that may be embedded into a packing flange (as shown), placed on top of the packing flange, or embedded in the packing follower. The spring sets provide a constant loading (to provide the packing stress) and maintain that load for a period of time reducing the frequency of manual adjustments. While not called out below, it should be noted that through proper torque applied to the packing nuts, the spring load is generated. Maintenance of this torque is critical to ensuring low leakage rates.
    It should also be noted that the valve body-bonnet joint is also a source of emissions. For ISO qualified designs, this joint is tested and part of the qualification.

The illustration below shows a typical arrangement for low emission packing.

Live Loaded Packing Arrangement

When choosing an arrangement for Low Emissions Packing to prevent Fugitive Emissions, be sure to reach out to Setpoint Integrated Solutions for all your needs.

*Trademark of GE

This information comes from the document:

“Masoneilan* Fugitive Emission Packing Selection Guide 02/2017 GE Oil & Gas”

© 2017 General Electric Company. All rights reserved.

Do you know which Pressure Gauges are Suitable for Ammonia Applications?

Ammonia Applications Have Specific Requirements to Ensure Safety

Do you know which pressure gauges are suitable for Ammonia applications?

Ammonia service is very severe and can have an impact on all materials that make up the components which Ammonia encounters within a process. It is important then to know which materials are suitable for Ammonia Applications. Below we spotlight one of our OEM partners, Ashcroft Inc., and explain which Pressure Gauges are suitable for Ammonia Applications.

Ammonia is a common refrigerant used in many commercial installations. It is also used as a fertilizer in the form of a gas or water solution. When using a gauge to measure pressure in an ammonia application, it is critical that the wetted parts of the gauge are compatible with the process.

Proper selection of wetted parts is especially important since ammonia is poisonous! OSHA/NIOSH lists 500ppm as immediately dangerous to life and health. The only acceptable wetted parts material for gauges used in ammonia applications are stainless steel or steel.

A gauge with bronze/brass wetted parts is not suitable for ammonia applications since ammonia may cause the bronze/brass wetted parts to stress-crack and cause a gauge failure.  Setpoint Integrated Solutions offers a variety of Ashcroft gauges suitable for ammonia applications. When ordering a gauge for ammonia service, the wetted parts of choice are 316 SS.

Setpoint Integrated Solutions is proud to partner with Ashcroft Inc. The above information comes from Ashcroft Inc. 

Contact us today to learn more.

Do You Know What a ROSoV is?

A Remote Operated Shutoff Valve with Failsafe Actuation for Emergency Shutdown duties is a key safeguard for your tank farm

Setpoint Integrated Solutions, Inc. (Setpoint IS) is proud to represent top-tier OEMs such as our partner Rotork.  The following content is courtesy of Rotork plc, and can be found here.

The video below showcases more information on ROSoVs and their role in safeguarding tank farms.