Engine: Engineering Safety

1. A The residues in the compartment must not be capable of producing any toxic gas under existing atmospheric conditions.
2. B The concentration of combustible gases in the compartment's atmosphere must be less than 10 percent of the lower flammable limit.
3. C The toxic gases in the compartment's atmosphere must be within permissible concentrations.
4. D All of the above.

Tip: press A-D to answer