Selecting a Detonation Arrester - Elmac Expertise
1
Hide This By using this website you agree to cookies being placed on your computer/device - View Privacy & Cookie Policy Home | Request A Quote | Contact | Site Map | Privacy & Cookies Data Centre Download more information on our range of products and services Enter Here Product Guide Follow @ElmacTech Like us on Facebook Elmac news feed Subscribe to our Newsletter Email this page Print this page UK Office Elmac Technologies Coast Road Greenfield Flintshire UK CH8 9DP Phone: +44 1352 717600 Fax: +44 1352 717642 [email protected] Elmac Expertise Selecting A Detonation Arrester Home » Expertise » Detonation Arresters » Selecting a Detonation Arrester Selecting A Detonation Arrester Deciding whether or not a detonation arrester is required can be a challenge even to experienced engineers. The following information aims to provide some relevant information and guidance, but if there is any doubt please contact the Elmac customer services team who will be happy to help. Are There Specific Rules When Selecting A Detonation Arrester? The operating pressure must be less than or equal to the tested pressure; the operating temperature must be within the product range The maxiumum experimental safe gap (MESG) value of the operating gas (gases) must be equal to or greater than that approved (explosion group) for the detonation arrester The pipe connection size on the unprotected side must be the same or less than the nominal pipe size of the detonation arrester It is necessary to account for the pressure drop Compatibility of the arrester material and gas should be considered The arrester will meet national/international standard/regulation such as ATEX How Do I Know When I Should Use A Detonation Arrester? A detonation arrester will provide maximum protection for all piping systems When the ratio of the pipe length (between the potential ignition source and the arrester ) L, and the pipe diameter D, is larger than 50, i.e., L/D > 50 When multiple bends are involved in the pipe system When any other factors/pipe fittings such as obstacles may cause detonation to occur When ignition may be caused by a very strong ignition source such as a jet flame What Impact Will A Detonation Arrester Have On My System? A detonation arrester may cause a significant increase in pressure drop Possible clogging/fouling if the gas is not clean (and if the arrester is not maintained properly) Is There A Rule Of Thumb Guideline For Selection? Select (a) correct arrester size, (b) operating pressure and temperature, (c) explosion group Ensure any maxiumum pressure drop criteria is met (for a given flow rate) It may be necessary to take into account material compatibility If an endurance burning condition is possible, at least one temperature sensor must be installed on the flame approaching side of the arrester Who Can Advise Me On Product Placement/selection? The Elmac customer service team will be happy to advise you on any aspect of detonation arrester suitability and selection. More On Detonations What is a Detonation? 1. Stable and Unstable Detonations 2. Deflagration vs Detonation Arresters 3. Selecting a Detonation Arrester 4. Quick Links: Frequently Asked Questions Technical Guidance Notes (in data centre) Product Selection Customer Services Home | Products | Industries Served | Elmac Expertise | Request A Quote | Locate A Representative | Latest News | Mobile Website | Contact Us © 2015 Elmac Technologies | Privacy & Cookies Policy | Terms & Conditions | Greenfield Group Elmac Technologies specialises in the manufacture of Flame Arresters and supply of Pressure Relief Equipment. Home Product Selection Industries Served Elmac Expertise Inspection Services Request A Quote Latest News About Us Careers Contact Us Customer Satisfaction Survey Frequently Asked Questions Selecting a Detonation Arrester - Elmac Expertise http://www.elmactechnologies.com/flamearresters/selecting-detonation... 1 of 1 16/03/2015 09:50
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Elmac Expertise Selecting A Detonation Arrester
Home Expertise Detonation Arresters Selecting a Detonation Arrester
Selecting A Detonation Arrester
Deciding whether or not a detonation arrester is required can be a challenge even to
experienced engineers. The following information aims to provide some relevant
information and guidance, but if there is any doubt please contact the Elmac
customer services team who will be happy to help.
Are There Specific Rules When Selecting A Detonation Arrester?
The operating pressure must be less than or equal to the tested pressure; theoperating temperature must be within the product range
The maxiumum experimental safe gap (MESG) value of the operating gas(gases) must be equal to or greater than that approved (explosion group) for thedetonation arrester
The pipe connection size on the unprotected side must be the same or less than the nominal pipe size of the detonationarrester
It is necessary to account for the pressure drop
Compatibility of the arrester material and gas should be considered
The arrester will meet national/international standard/regulation such as ATEX
How Do I Know When I Should Use A Detonation Arrester?
A detonation arrester will provide maximum protection for all piping systems
When the ratio of the pipe length (between the potential ignition source and the arrester ) L, and the pipe diameter D, islarger than 50, i.e., L/D > 50
When multiple bends are involved in the pipe system
When any other factors/pipe fittings such as obstacles may cause detonation to occur
When ignition may be caused by a very strong ignition source such as a jet flame
What Impact Will A Detonation Arrester Have On My System?
A detonation arrester may cause a significant increase in pressure drop
Possible clogging/fouling if the gas is not clean (and if the arrester is not maintained properly)
Is There A Rule Of Thumb Guideline For Selection?
Select (a) correct arrester size, (b) operating pressure and temperature, (c) explosion group
Ensure any maxiumum pressure drop criteria is met (for a given flow rate)
It may be necessary to take into account material compatibility
If an endurance burning condition is possible, at least one temperature sensor must be installed on the flameapproaching side of the arrester
Who Can Advise Me On Product Placement/selection?
The Elmac customer service team will be happy to advise you on any aspect of detonation arrester suitability and
selection.
More On Detonations
What is a Detonation?1.
Stable and Unstable Detonations2.
Deflagration vs Detonation Arresters3.
Selecting a Detonation Arrester4.
Quick Links:
Frequently Asked Questions
Technical Guidance Notes (in data centre)
Product Selection
Customer Services
Home | Products | Industries Served | Elmac Expertise | Request A Quote | Locate A Representative | Latest News | Mobile Website | Contact Us
2015 Elmac Technologies | Privacy & Cookies Policy | Terms & Conditions | Greenfield Group
Elmac Technologies specialises in the manufacture of Flame Arresters and supply of Pressure Relief Equipment.
Home
Product Selection
Industries Served
Elmac Expertise
Inspection Services
Request A Quote
Latest News
About Us
Careers
Contact Us
Customer Satisfaction Survey
Frequently Asked Questions
Selecting a Detonation Arrester - Elmac Expertise http://www.elmactechnologies.com/flamearresters/selecting-detonation...
1 of 1 16/03/2015 09:50
