The first step before selecting any dust collection equipment is to know if your dust is combustible.
Their are five elements in order to have a potential dust explosion, often known as the dust explosion pentagon. The first three are first needed for a fire.
1. Combustible dust (fuel)
2. Ignition source (heat)
3. Oxygen in air (oxidizer).
An additional two elements must be present for a combustible dust explosion:
4. Dispersion of dust particles in sufficient quantity and concentration
5. Confinement of the dust cloud. If one of the above five elements is missing, an explosion cannot occur.
Did you know OSHA has been enforcing a National Emphasis Program (NEP) for companies to comply to proper dust mitigation strategies?
ECI is here to help you make sure your new or existing dust collection system complies to the latest applicable NFPA guidelines. Many of the services and products we offer are listed below.
Contact us to begin your dust mitigation strategy.
The first step in knowing if your dust is combustible or not is to obtain a KST test report on your dust. OSHA requires all dust collection systems to have KST testing performed and to keep this documents as part of your dust hazard analysis. ECI offers KST dust testing services.
Contact us to have your dust sample tested.
ECI offers explosion and pressure relief venting for new and or used dust collection equipment. Our explosion vents comply to NFPA 68.
Flameless vents can be used on a variety of dust collection equipment. These vents are ideally designed to be used on equipment located indoors since they eliminate the release of a controlled explosion. Flameless vents comply to NFPA 68 as long as they are below a certain KST rating.
Isolation Valves or No return valves are passive systems that automatically shut in the event of a dust explosion inside the dust collection system and prevent the fireball from entering the work area. To comply with NFPA 69, all isolation valves are furnished with a micro switch for system shutdown, a dust level sensor, and a stand alone control panel, or we can integrate the NRV logic into your dust collector control panel.
High speed abort gates are required on woodworking dust collection systems and other hazardous material collectors when the air is recirculated back into the building with an airflow requirement of 5,000 CFM or greater.
Spark detection and suppression systems are typically installed on woodworking dust collection systems but may be required on other applications to a potential dust collection explosion. A spark detection and suppression system is made up of the following components. A control panel, detector senors, and a extinguishing system. A sensor is placed upstream in the duct work to detect a possible amber. A signal is sent to the control panel to activate the fire extinguisher nozzle downstream before the amber reaches the dust collection system. The most common type of systems have water connections however, other extinguishing agents are available. The control panel will also provide an alarm and strobe when the spark detection system is activated. The high speed abort gate can also be tied in to the spark detection system control panel.
ECI is here to help if you require a spark detection or suppression system to comply to NFPA.
When dust collection systems are installed indoors with hazardous dusts, the only solution may be to provide a chemical detection and suppression system. These systems are typically used on pharmaceutical applications. Routine maintenance is required to keep these system up to date and functioning.
ECI offers NFPA compliant rotary valves. These valves are required per NFPA when a dust collector with hazardous dust is installed indoors.
The XP Drum Kit is an innovative alternative to traditional rotary valves for providing a means of explosion isolation. Our design provides an economical solution that improves ergonomics and reliability.
The drum kit acts as a strengthened extension of the dust collector. It is designed to withstand the reduced pressure (Pred) that develops during a properly vented deflagration event and is not limited by a KSt value.
As long as the explosion relief vent is sized properly and can accommodate the added volume of the drum kit, no modifications are required to the vent panel or isolation device on the inlet ducting.