Bio Water Based Liquid Penetrants and Magnetics: a safer and cost-efficient solution for today

Abstract

The objective of this paper is to present a study on the contribution of the superficial methods (Liquid Penetrants and Magnetic Testing (MT) liquids) in the NDT industry to the European Union and International targets of achieving climate neutrality. Bio water based liquid penetrants and MT liquids are available since some years in the NDT industry and are already widely used by medium and large companies worldwide, but their use has been limited in the past due to: higher costs, lower sustainability awareness, practical application process. (Please see previous contributions here: https://www.ndt.it/uk/documents.asp for technical papers presented on water-based liquid penetrants and MT liquids). Recently, the combination of higher oil and solvents prices internationally and an increased environmental consciousness by most Companies worldwide have turned the situation, so nowadays more and more Companies use safer Bio water-based products in their everyday work to achieve better operator and environment safety and lower overall costs. This paper will present effectively the advantages for the operator, the environment, and the Companies’ global costs of using Bio water based liquid penetrants and MT liquids in their NDT quality control process, through: a) A review of the updated applicable International Standards; b) An analysis of the safety and costs advantages of using Bio water based liquid penetrants and MT liquids compared to VOCs-containing alternatives; c) Real Companies case studies in the NDT industry; d) Examples of indications using Bio water based penetrants and MT liquids on metal pieces and on artificial defects as described in the International Standards.