The purpose of a Mask fitting Christchurch is to ensure that the worker is wearing a proper mask and that the mask is properly fitted to the face. The masks used in most asbestos removal work are made of a material called neoprene. This material stretches when it comes into contact with air and forms an airtight seal around the mouth and nose.
There are a few different types of welding tests that can be performed to ensure the quality of welds. The most common type of Welding testing NZ is the penetration test. This test determines how deep the weld penetrates into the material being welded. Another common type of welding test is the heat-affected zone (HAZ) test. This test determines how much heat is needed to cause damage to the surrounding area