A little spring cleaning is good for your home, but it’s critical for your business and employees when combustible dust is present. Knowing where combustible dust accumulates and when to remove the dust are the important first steps to preventing a combustible dust explosion.
How much dust is too much dust?
Annex D of NFPA 654 says that immediate cleaning is needed “whenever a dust layer of 1/32- inch thickness accumulates over a surface area of at least 5% of the floor area of the facility or any given room. The 5% factor should not be used if the floor area exceeds 20,000 ft, in which case a 1,000 ft layer of dust is the upper limit.” Overhead beams, ducts, the top of equipment and other surface areas where combustible dust accumulations can occur, including vertical surfaces count in this equation, too.
That’s the same thickness as a paperclip.
Typically, floors are a good place to start, but don’t forget to look in less obvious places, like on and around your equipment, in your rafters, tops of pipes and in your ductwork. Also, be sure to check for leaks around your dust collectors where there can be combustible dust accumulations.
Removal of accumulated dust that may be combustible must be done with equipment approved for combustible dust cleaning, such as intrinsically safe vacuums and grounded hoses. Contact vacuuming with this type of equipment lessens the risk of a dust explosion during the cleaning process.
Using the wrong methods and equipment to clean combustible dust can be catastrophic. From the proper protective clothing to vacuum hoses, be sure you know the dust remediation is performed by certified industrial cleaning professionals.
Hughes Environmental abides by standards set by the NFPA, NADCA, and OSHA when performing combustible dust cleaning. Read more about combustible dust remediation performed by Hughes, visit www.hughesenv.com, or call 888.845.3952 to schedule a ‘spring cleaning’ for your facility. Spring cleaning for your facility is critical for the health and safety of your employees. Click To Tweet