Anti-Static Flooring Part Four
SPECIFICATION AND STANDARDS
The rate at which electrostatic charge is dispersed within and through the floor finish is controlled by the resistance, measured in the unit Ohms (Ω), usually expressed in thousands (Kilo-ohms or KΩ) or millions (Mega-ohms MΩ) and denoted by units expressed as a figure of ten with indices, i.e.103 for 1KΩ or 106 for 1MΩ. Greater values of resistance suggest a slower passage of electrostatic charge and the decay of voltage measured.
Resistance may be measured in one or more of four ways:
(a) between two points at a pre-defined distance on the surface of the cured resin floor finish
(b) between the surface and the underside of the resin finish (the substrate)
(c) earth leakage of the whole system, between the surface of the resin finish and via the substrate to a point defined as electrical earth
(d) a combined body voltage test where the charge level generated and its decay rate on a person walking the floor is measured using specialist equipment to identify the interaction between floor and specialist footwear.
It is not uncommon for those operating facilities which demand static controlled flooring to be unsure of their exact numerical requirements, when expressed in the terms above.
Resin flooring Project – Preston College
Quest were contacted by a main contractor and asked to tender for works on a public sector project within a college facility. This included installation of a resin flooring based system for an engineering workshop.
After initial contact, Quest put forward a tender and the order was accepted 4 weeks ahead of the programmed start date, which allowed for thorough planning to take place in order to ascertain the best flooring solution for the environment the end user specified to the main contractor. Altrotect Plus was specified by Quest as the best solution for the mechanical engineering space incorporating a 3 part system (one part DPM primer and two parts resin coating) which would provide a surface in line with the end users specifications.
Quest then met with the client to present the selected system to explain that it would provide a hard wearing, easy to clean and long lasting surface that would reflect the lighting in the space to give a much brighter feel to the environment. This was met with approval by the client and the system was approved for the project.
The entire project was programmed for one week but Quest finished in just 5 days; with all materials for the 1000m2 floor delivered at once from a single production in order to ensure no shade variations in the surface.
Both the main contractor and end user were very happy with the results of the final installation, due in large part to the work being completed ahead of programmed time and on budget and the floor is now used by the engineers of the future in the college today!