Emission Control

Within industry at large there is a lot of interest in the wider topic of leaks or emissions. To some people this means reducing the quantity of carbon dioxide emitted to the atmosphere by fossil-fired power plants. Others see it as the need to completely eliminate any chance of spills of toxic chemicals. Within the Valve World community, however, the term "emission control" is normally synonymous with that of "fugitive emissions through or from valves". In other words, the application of insights and technology to reduce leaks through O-rings, seals, packings and gaskets, etc. The reasons for controlling emissions are well-documented: avoid loss of (expensive) product; limit the release of greenhouse gases; enhance safety in the workplace, etc.

This Special Interest Box presents many recent papers and articles published in the field of emission control.

Exchanging elastomer knowledge
At the Valve World 2010 Conference, Alfred Kruijer of Shell organized  a workshop on "Soft Sealing Performance & Technology". Attended by more than fifty peers in the industry coming from end-users, suppliers and engineering companies, it addressed many of the challenges confronting those working with soft seals for valves as well as testing, design and performance.

Assessing fugitive emissions performance in valves and packing
By DavidW. Reeves (ChevronTexaco Refining), J.W.(Bill) Ross, P.E. (ChevronTexaco Refining) and MattWasielewski (Yarmouth Research)

This paper describes a simple test and testing procedure for valve emissions developed by ChevronTexaco together with Yarmouth Research. Also presented are the results of various tests run on valves typically found in refineries. The authors conclude that, with today's technology, it is possible to significantly reduce fugitive emissions to the point where almost all valves should remain in compliance. ChevronTexaco's Testing Procedure is included as an Appendix.

Read the whole article (PDF, 1635KB).

This article was originally published in the Valve World June 2005 edition. 

Maintaining integrity - a managed approach
By Tony Nicholls, Furmanite International

Leakages from valve stems have been well documented and many companies are taking steps to reduce emission levels. However, have you stopped to consider the flanges on your valves and other piping components? They too can be a major factor to overall plant leakages. In the light of a new service recently introduced to eliminate critical joint failure, Tony Nicholls, Furmanite International, examines the factors causing leaking joints, and the actions required to ensure joint integrity.

Read the whole article (PDF, 439KB).

This article was originally published in the Valve World September 2005 edition.

The development of effective fugitive emissions control for valves
By Dave Cornelsen,Walworth

This article discusses development and testing work carried out to help reduce fugitive emissions of VOCs through valves. As restrictions tightened, the scope of the programme was widened to include the development of a new stem packing design. This packing was subsequently evaluated in the laboratory and during field trials.

Read the whole article (PDF, 330KB).

This article was originally published in the Valve World February 2006 edition.

Fugitive emissions and control valves
by Etienne Venner, Emerson Process Management, France

This paper describes the history of the development of the fugitive emissions requests, the standards committees and manufactures reactions to them. How do these standards differ?
How do they compare?
The paper also describes the approach and issues a control valves manufacturer has to deal with to meet the various requirements on fugitive emissions. It is recognised also that control valves by their function of continuous movement have more tendency to wear out than on/off valves and are therefore more easily subject to packing leakage.

Read the whole article (PDF, 396KB).

This article was originally published in the Valve World June 2006 edition.

Emission measurements of industrial valves according to TA Luft and EN ISO 15848-1
By Professor Dr.-Ing. Alexander Riedl, University of Applied Sciences Muenster, Germany

As the title suggests, in this article Professor Dr.-Ing Alexander Riedl looks into the implications of measuring emissions according to TA Luft and EN ISO 15848-1 and points out some important conclusions.

Read the whole article (PDF, 205KB).

This article was originally published in the Valve World June 2007 edition.

Fugitive emissions: guidelines for successful valve upgrades
By Ralf Vogel, Engineering Manager, Burgmann Packings Limited; Stefan Danner, Applications Engineer, PSS Division, Burgmann Industries GmbH & Co. KG.; Bob Smith, Product Marketing Manager, PSS Division, Burgmann Industries GmbH & Co. KG

Due to the upcoming emission legislation in Europe, most chemical and process industry plants will have to adhere to strict legislation when replacing sealing elements during shut-downs. In addition to the need for proper sealing solutions there are requirements with regard to the correct installation and condition of the equipment, i.e. valves or flange connections. All aspects have to be covered to ensure a tight and minimal emission performance. In this environment, seal manufacturers strive to not only supply packing sets to the customer but to give additional support for a problem-free upgrade of existing valves to IPPC/ TA-Luft requirements. This work includes the provision of the right products, working with the customer and helping with (or managing) the transition work, training and educating maintenance staff about the requirements and consequences of the I.P.P.C. and TA-Luft legislation.

Read the whole article (PDF, 637 KB).

This article was originally published in the Valve World June 2007 edition.

Apart from these articles you find here, we regularly publish articles on emission control in the Valve World magazine.

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