A common way to implement dust management at a construction site is to build a mixing tent. The tent has its own advantages, but so have a mobile source extraction devices.
Mixing tent handles dust at one point efficiently
The mixing tent is a negative pressurized space used for dust control. With a tent you create a dust-proof compartment in your space, and you can implement it using existing or temporary structures. This is how you separate the clean and dusty spaces.
Source extractor protects from dust where it is needed
Source extractor devices are quick and easy to deploy. Your work team moves them from one destination to another as needed. Important uses for source extractors, such as CAMU, are dry mix blending of plaster, mortar and other dry matters. Other similar local exhaust ventilation devices are, for example, devices for chopping, grinding and other materials.
Source extraction technology protects you from dangerous quartz-containing construction dust. At the same time, you also protect the construction and its future users.
The mixing tent protects the environment where it is located
Negative pressure units are used in mixing tents. Remember to clean the filters of the units daily. Device specific pressure generation and air volume data, as well as the amount of mixing required at the site, affect the specifications for the negative pressure units in the mixing tent. When specifiying, pay attention to the fact that the power drops significantly when the filter is loaded (i.e. dirty) when collecting dust. Also consider the fire resistance requirements for the construction of the tent and the design of the bushings.
The mixing tent prevents dust from spreading from the workstation to the site. If the dry mix bag breaks or falls while it is being handled, the tent protects the site. The drawback of the mixing tent is that the worker has to work in a small space where a lot of dust is generated. Respirator has to be used in the tent. Observe the maximum daily operating time set for the respirator mask. Employees’ clothing collects dust in the tent, which then spreads to the clean premises.
Do not store materials in the mixing tent as it will make it difficult to work and the materials will act as a dust trap. The air in the tent is filled with dust quickly, but gets cleaned slowly. Often the tents are too small and the negative pressure is too low. As a result of the fixed location of the mixing tent, you may also need to carry heavy, ready-mixed lots of long distances.
Building a mixing tent requires resources, both materials and working time. The tent is a solid, space-consuming construction that is difficult to move. In most cases, the transfer requires disassembly and requires a couple of employees. The tent also requires separate lighting fixtures.
The source extractor moves to where the work is done
A source extraction device, such as CAMU, is a ready-to-use workstation that has no separate set-up costs. It can be easily moved by one worker from one work site to another and from floor to floor. This accelerates the flow of work on the site and reduces the carrying of finished, heavy mortar and other lots from dry mix blending. The compact source extraction device can fit into confined spaces, where the mixing tent cannot even be built. The use of space on the site is easier.
CAMU 1200 source extraction workstation captures dry mix dust at the time it is created
Source extraction devices capture the dust that is near you before it spreads to the air and to your lungs. Therefore, you do not necessarily need a respirator and no dust will accumulate in your work clothes. The need for cleaning at the site is reduced. Source extraction devices save you time and money in many ways.
However, the source extraction devices, such as CAMU, are unable to control all the dust generated by the handling of materials such as mortar bags. That is why an employee has to act in front of CAMU whenever dust may be generated. So he or she must learn to be in CAMU's sphere of influence, for example, when dealing with dry mix bags.
Which option to go for?
The mixing tent works well in passive dust control, as long as the mixing tent is handled carefully, the filters are serviced daily and the negative pressure unit is efficient enough - in addition, remember to use a respirator.Using a source extraction device is active dust control. It is preventing the spread of dust at the time it is created. Source extraction devices save you steps as it moves to your place of work.
Then, when you want to be absolutely sure that no dust is generated, build a mixing tent and roll CAMU into it. In that case, you will still need to be prepared to carry heavy buckets.