Control measures for drilling

TNO has tested control measures for drilling in sand lime blocks and concrete.

The hazardous substance management plan is as follows (in order of effectiveness):

Step 1: Choose quartz-Free / quartz-poor building materials.

Step 2: Choose to build PREFAB.

Step 3: Choose dust-free processes an tools.  

 

TNO has tested one dust-free process for drilling. The test specifications are a space volume of 15 m3, ventilation of 150 m3/h and 100% power-on time of the tool.

The concentration of substance is measured in the employee's respiratory zone.

 

 

DRILLING WITHOUT CONTROL MEASURES

Excess factor: 70-90 times limit respiratory quartz

DRILLING WITH CONTROL MEASURES

Prevention factor (PF): 100 – 140.
Concentration of quartz quartz at workplace below limit value (0.075 mg / m³).

Address

Schoemakerstraat 97K
2628 VK Delft
T 088 866 30 00
F 088 866 30 10
E wegwijzer@tno.nl

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