Corrosion Inhibition of Dry and Preaction Fire Suppression Systems Using Nitrogen Gas

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Date & Time:
April 9, 2014, 11:00 a.m. -12:30 p.m. Central (GMT -05:00, Chicago)

Duration 1.5 hours

This seminar offeres 1.5 CPDs and 0.15 CEUs.
(There is a fee of $15 to acquire the CEU credits. The webinar/content is being given free, but the CEUs will have a fee.)

Internal corrosion of dry and preaction fire suppression systems is a growing concern for the fire sprinkler industry. Corrosion in these systems causes failures resulting in property damage, production downtime, and increased maintenance costs. Additionally, corrosion impacts system hydraulics and reduces the efficiency of fire sprinkler system designs. Historically, dry and preaction fire suppression systems have used compressed air as the supervisory gas to pressurize their piping. Compressed air, however, contains both oxygen and moisture causing the system piping to corrode. Nitrogen, acting as a supervisory gas in piping, is a well documented inhibitor of corrosion and has been implemented in industries such as gas and oil, pharmaceutical, and marine transit. This study analyzes the corrosion-inhibiting effects of 98% nitrogen gas when applied to both carbon steel and galvanized steel, in an environment stimulating a dry pipe fire sprinkler system. The weight loss methodology is utilized to examine the effects.

Learning Objectives:
Upon completion of this webinar, participants should be able to:

  1. Evaluate the life expectancy of a dry pipe or preaction system under supervisory nitrogen conditions vs. compressed air conditions
  2. Identify the value of using corrosion mitigation in fire sprinkler system design
  3. Discuss and analyze the use of a nitrogen generator system for dry and preaction systems.

Speaker Info:

Josh Tihen
Josh Tihen is the Corrosion Solutions Product Manager at Potter Electric Signal Company. He is a chemical engineer who is a member of the American Institute of Chemical Engineers, the American Chemical Society, and the National Association of Corrosion Engineers (NACE). Josh Tihen is a certified NACE Corrosion Technician and currently serves on TEG 159X Building Fire Protection Systems: Corrosion and Deposit Control committee for NACE.


How does a WEBINAR work?
A desktop or laptop computer connected to the Internet is required. You will be provided with a link to join in. You will use your browser (i.e. Safari, Firefox, Mozilla, etc.) to get connected to the live PowerPoint presentation and live audio. You can have many people listening in your office.; however, only those who register for a certificate will receive CEU credit. The audio will be transmitted though your computer speakers. Or, you can call in (long distance charges of about $18 will be posted to your phone bill.) You can ask questions from wherever you are using a feature that allows you to type in your question during the live presentation. The speaker will read your question aloud and answer it live. You will be able to download the PDF file of the PowerPoint slide presentation the day of the seminar. You can also print the PDF file presentation and make as many copies as you need for note-taking.


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