I see a lot of information around compression fitting failure for vent systems on these slides. Is there a different type of fitting recommended specifically for vent stacks?

Welded joints are always best, but they cannot always be used as a connection to tanks and tubes, as mechanical joints are needed for maintenance. Supports for the reaction forces can help ensure the mechanical joints in the piping does not pull apart. 

If large diameter or thick-walled tube is installed with compression fittings, the use of hydraulic swaging is recommended.

Regardless of the piping method, reaction forces should be reviewed and supports designed for the reaction forces. 

Pressure testing of the vent system is recommended to ensure the vent system will withstand relief device activation.