The goals set by the developer for the purity of the construction project will guide the contractor in making a plan for site purity, i.e. the dust control plan. As part of the overall safety planning of the construction project, the contractor must also have a dust control plan in which the site's purity targets are recorded. The construction starter meetings between the subscriber, the contractor and the designer showcase the planned dust control solutions to achieve the purity goals.
With dust control, the contractor strives to prevent the spread of construction dust to the work environment and the exposure of construction workers and end-users of the completed building to the hazards of dust.
Know the dust and risks, and you will find solutions
To succeed in dust control planning, you need to identify:
- where and when dust is generated on site?
- how long do dust creating phases take?
- what type of dust is generated?
- which workers are exposed to dust?
This will also help you find the most effective solutions to reduce dust levels. Based on this information, you can make safety and health risk assessments and think about their consequences. You can also eliminate the immediate risks.
Based on your risk analysis, you can choose the right protection measures for the risks that you could not eliminate in advance. Also pay attention to safety data sheets and chemical lists so that they are available to workers and known by them.
Make a site purity plan
Mark the dust-free working methods of your choice and the protection methods on the site's purity plan. Make sure all people working on the site work towards the same goal. Include the key dust control issues in the contract documents.
Also include in the plan the space usage and access restrictions, dust control activities, and informing methods on the construction site. The P1 purity class requires a purity plan that also takes into account site compartmentation, materials transport, storage and protection, as well as cleaning of premises. In your plan, also outline the protection of the ventilation ducts between dust creating work phases. Dusty and dirty work phases must be completed before final surfaces are installed, and operating tests and adjustments of ventilation equipment are performed.
Active and passive dust control and remedial measures
The main tools you can enter into your dust control plan on site are active dust control, i.e. dust-free working methods and the use of source extraction devices, as well as passive dust control, such as ventilation, compartmentation and negative pressure units. In addition to these, you can take remedial action when active and passive dust management is not enough, i.e. plan sufficient site cleaning. Use of respirators is mandatory for dusty work.
Purity management is an attitude
Organize adequate training and guidance for all those working on the site. Make employees aware of the importance of dust control and maintenance of general purity, so that employees are attentive to purity with the right attitude. In training, draw special attention to the dusty work phases and their harmfulness, the chosen working methods and equipment, and the correct use and maintenance of the equipment. Material protection is also important to prevent dirt and dust from moving into clean spaces. Highlight the importance of proper waste disposal.
It would be a good idea to designate a construction site responsible person for purity. His or her task is to monitor the functioning of the compartmentation, the condition of the negative pressure and source extraction devices and the change of filters, as well as the overall purity.
Require the use of respiratory protection when the chosen dust control methods do not adequately protect the worker. Invite employees to inform the supervisor of the hazards they encounter.
Track, measure and repair
In order to reliably monitor the implementation of the plan, regular measurements must be carried out at the site, unless exposure to dust or other hazardous substances can be observed otherwise. Risk assessment should be updated as necessary.
Keep track of your site purity targets regularly at site meetings. Improve the dust control plan continuously - it should not be copied from the previous site because each construction project is different. Of course, many things identically are repeated from one site to another.
With a successful dust control plan, costs remain under control and workplace safety, work efficiency, and comfort on the site improve.