B&Z Biotec

26/03/2022

We are going to start our new business with our chinese friend.

11/03/2022

Now we are ready...

06/03/2022

Preventing Grain Dust Explosions:

Proactive prevention is the best defense against an explosion. Develop and implement a plan that includes cleaning, sanitation, and regularly scheduled maintenance. There should be a continuous effort to reduce and remove grain dust in all work areas. Leg boots should be cleaned regularly to remove excess dust and kernels. According to OSHA Standard Requirements, fugitive dust must be removed when accumulations exceed 1/8”.

The two most important factors in preventing an explosion are keeping the facilities clean to minimize the fuel source and keeping the equipment in good working order to minimize the chance for ignition.

Train your employees as a first line of defense. When they're armed with information and training on combustible dust hazards, they can be instrumental in recognizing unsafe conditions, take preventative action, or alerting their supervisors or management.

Additional preventative steps include:

1.Developing and implementing a routine lubrication plan for bearings on the basis of the manufacturer’s recommendations
2.Developing and implementing a standard operating procedure (SOP) for housekeeping practices to minimize grain dust accumulation
3.Using a food-grade mineral spray on grain that is being transferred
4.Installing a bearing-temperature monitor in strategic locations throughout the grain handling system and implementing a program to periodically monitor bearing temperature
5.Installing belt-rub sensors inside bucket-elevator leg casings
6.Substituting steel cups with plastic cups in elevator legs
7.Using anti-static belting material in legs and horizontal belt conveyors
8.Establishing easy-to-open clean out doors in the leg-boot side panel for easy removal of grain and dust
9.Installing dust aspiration systems or a ventilation system at grain transfer points
10.Training employees in safe work practices so that they can recognize and prevent hazards that could lead to a grain dust explosion
11.Posting No Smoking signs and actively enforcing the rule
12.Completing regularly scheduled inspections to locate any defective wiring or sparking and make repairs as needed..

06/03/2022

Grain dust Explosion....

Over the last ten years, grain dust explosions have occurred at an average of 10 explosions per year. You might look at that number and think that grain dust explosions aren't something you need to worry about. However, the magnitude of these explosions can be devastating. These explosions can bring down entire operations, causing injuries and even fatalities. But with prevention, grain dust explosions can be avoided.

What is a Grain Dust Explosion?

When grain is handled, dust particles are created. Some of these particles will be fugitive dust, which are very small dust particles that escape into the atmosphere and are suspended in air. It collects on floors, ledges, beams and any exposed equipment. Grain dust explosions happen when there is an accumulation of grain dust in the air and on equipment in a confined space and then exposed to an ignition source.
There are five elements that must be present for an explosion to occur: grain dust, oxygen, dispersion of dust, confinement, and an ignition or fuel source. This is sometimes referred to this as the dust explosion pentagon. If any one of the five elements are removed, an explosion cannot take place.

There are two phases to the explosion, primary and secondary. The primary explosion usually occurs within a confined area, such as the bucket elevator or conveyor. If the dust is exposed to a heat source, it ignites and causes the explosion. The blast from the primary explosion dislodges and suspends the fugitive dust which causes the secondary explosions (see illustration below). These explosions are normally much larger and more catastrophic. The five elements of the explosion pentagon must be present for both the first blast and second blasts.

06/03/2022

27/02/2022

The technology of future....