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When an H2S leak occurs upwind of your location, the safest direction for you to go is:

An H2S concentration of ______ ppm or greater is considered to be Immediately Dangerous to Life and Health (IDLH), and will start to cause a loss of smell and irritation to the eyes, nose, and lungs

The melting point of pure sulfur is ______ , while the ignition temperature is ______.

In the Claus Reaction Furnace, a portion ( ) of the H2S is burned to make SO2, this allows for an H2S:SO2 ratio of ______ , which is optimal for the Claus reaction in the converters.

For sulfuric chemical equilibrium reactions there are several factors that may influence their completeness and resulting sulfur production. These do NOT include:

The air demand signal should oscillate between ______ percent on the DCS system. An oscillation larger than this will result in a loss in the overall recovery efficiency of the SRU.

The reaction furnace temperature should be kept above ________ °C to ensure complete destruction of contaminants like BTEX, Mercaptans, and Hydrogen Cyanide..

In the reaction furnace, a state of deficient air by the Air Demand Analyzer would result in:

The preferred method for reheating in an SRU is ____________ because no extra components are added to the process stream.

When starting up an SRU, the rate of increase in reaction furnace temperature should be ______ , except for the first 300°C after ignition.