Reactive Chem Definitions
Temperature at which chemical begins to decompose based on testing data, typically DSC or ARC data
What is decomposition temperature?
This incident caused a fire onsite due to material being released above its flashpoint and finding an ignition source.
What is the 2022 Utilities Dowtherm G release and fire incident?
It is identified by its green color.
What color is chlorine piping?
The consequence for exceeding most reactive chem composition limits.
What is the potential for a runaway reaction?
TNR is the acronym for this reactive chem temperature.
What is temperature of no return?
Temperature at which heat generation from reaction exceeds process' heat removal/cooling capability.
What is Point of No Return Temperature (Runaway reaction temp or Temperature of No Return)?
This incident was caused by contractors using a cutting torch near a chlorine line and is the reason the site color codes its chlorine piping.
What is the 1991 Alpha Plant Chlorine/Iron Fire Incident?
It is identified by its purple color.
What color is Titanium equipment?
This material/element has both a minimum and maximum concentration limit identified in the reactive chem limits.
What is Iron?
A-6-Tet/N-Serve is the common name for this chemical.
What is 2-chloro-6-trichloromethylpyridine?
Broad term that encompasses various changes in material due to heat exposure
What is degradation?
This incident almost caused a fire when the incorrect pump was almost installed and is the cause of the site's coloring of Titanium equipment.
What is the 1991 Chlorine/Titanium fire near miss due to wrong equipment installation?
Materials that will react with dry chlorine at ambient temperature.
What is Titanium and Aluminum?
The maximum temperature limit, above which pyridine decomposition will occur in R-3A/B/C/D.
What is 230*C?
A-Tri/ATCMP is the common name for this chemical.
What is 2-Trichloromethylpyridine?
Minimum temperature at which a liquid gives off sufficient vapor to form an ignitable mixture near the liquid surface or within the vessel
This incident caused 2 fatalities at the Pittsburg site.
What is the 1979 Chlorinated Picoline vessel runaway reaction incident?
Reactive temperature limits for carbon steel/Iron and Nickel with Chlorine.
What is 150*C for Carbon Steel/Iron and 600*C for Nickel?
Maximum allowable concentration limit (%) of A-6-Tet in R-150A/B/C/D/E, T-78, T-188.
What is 47%?
ARC is the acronym for this reactive chem test.
What is Accelerated Rate Calorimetry?
The maximum concentration of vapor or gas in air or oxygen above which propagation of a flame does not occur with a source of ignition
What is Upper Flammability Limit (UFL)/Upper Explosive Limit?
This incident caused a loud bang and puff of smoke to exit from a heat exchanger when a cutting torch was being used on the exchanger.
What is the 1993 Beta Plant hydrogen explosion incident due to carbon steel corrosion?
Explosive compound that forms when nitrogen and chlorine react at elevated temperatures.
What is nitrogen trichloride?
Above this maximum allowable concentration (%) of Alpha-Di and Alpha-Mono in B-1 bottoms, there is an increased likelihood of elevated corrosion in B-1 and downstream piping.
What is 0.70%?
DSC is the acronym for this reactive chem test.
What is Differential Scanning Calorimetry?