2014-06-24 20:39:00

How to identify contaminated area with NH3 gas and how to

address critical situation, in case of a huge amount of NH3 gas leak?


Our Solution: Real Time Dispersion Simulation


[Back grounds]

Your site has already installed gas monitoring system which covers indoor and

outdoor area in case when toxic/flammable gases leak will be occurred.

The key device of detecting toxic/flammable gases are sensors. Most parts of

your drills might be mentioned the countermeasures on how to prevent from



[Reguratory Status in Thailand]

Department of Industrial Works, The Ministry of Industry is considering

issuing a ministerial regulation that will mandate factories to acquire an

insurance covering 3rd party protection against various accidents.

January 30, 2014 by Thai Financia Post,


Thai Financial post



  [Detecting Devices]

You know that there’re so many kinds of sensors developed such as;


l  Metal Oxide Based Gas Sensors,

l  Capacitance Based Gas Sensors

l  Acoustic Wave Based Gas Sensors

l  Calorimetric Gas Sensors

l  Optical gas sensors

l  Electrochemical gas sensors


Some detectors are damaged when high concentration dose will be induced to

the detectors. Take example for Ammonia [1], typical electrochemical

ammonia detector will be able to detect only up to 100 - 300 ppm.

Photoionization detector (PID) might be a solution to solve this problem.


[1] NIOSH Pocket guide to Chemical Hazards []

Time Weighted Average: 25ppm

Short term Exposure Limit: 35ppm

Immediate Danger to life and Health: 300ppm

Lower Explosive Limit: 15% (150,000ppm)


[Explosion in the United States]



Fig. NH3 Release caused Catastrophic Vessel Failure and Death

at D.D. Williamson&Co., KENTUCKY, USA 2003



[Identify Affected Area in Your Site After Accidents]

How to identify contaminated area with NH3 gas and how to address critical

situation, in case of a huge amount of NH3 gas leak in concentration of above

300 ppm at your site, according to your emergency drills?


 [Our Solution]

We propose to use Real Time Dispersion Simulation Method in identifying

critical area in your site. Please visit the web site at; 



Please contact with;


Hashimoto, Mobile:+66(0) 91 545 4896,
fern, Mobile :+66(0)92 223 7536,  (Technology Specialist)
Bee, Mobile : +66(0)91 557 9303,
m (Account & Marketing Representative)