The correct answer is A (True) because CCPS clearly identifies poor housekeeping as a major contributing factor to secondary dust explosions , which are often far more destructive than the initial event.

In facilities handling combustible dusts (e.g., grain, sugar, coal, chemicals), small amounts of dust can accumulate on surfaces such as floors, beams, and equipment. While a primary explosion may occur within equipment (e.g., a dust collector), it can generate a pressure wave that disperses accumulated dust into the air , creating a large combustible cloud. If this cloud ignites, it results in a secondary explosion , often with significantly greater impact.

Poor housekeeping allows dust layers to build up , increasing the available fuel for such secondary explosions. Even thin layers of dust, when dispersed, can create highly explosive concentrations . CCPS emphasizes that effective dust hazard management includes regular cleaning, minimizing dust accumulation, and controlling ignition sources .

This principle has been demonstrated in numerous industrial incidents where secondary explosions caused the majority of damage and fatalities. Therefore, maintaining good housekeeping is a critical preventive measure in combustible dust hazard management.