Capability Statement May 2017 - Primas Dry Ice Blasting - Exposing Welds on Conveyor Brackets Perth, WA.
Primas Dry Ice Blasting was instructed by an engineering company to remove two layers of paint and one layer of primer from washers that had been stitch welded to conveyor brackets. The brackets were being supplied to a multinational mining company which was installing a conveyor at a new mine. A quality inspector for the mining company identified that the washer welds did not meet engineering specifications and requested that all the washers be seam welded as originally ordered.
Primas Dry Ice Blasting's engineering client had fabricated 200 of the conveyor brackets and then had them sand blasted and painted offsite prior to the quality inspector requesting that the welds be redone. The client, under pressure to meet a delivery deadline, wanted the welds exposed in situ so that they could be seam welded onsite, inspected and then sent offsite for sand blasting, repainting and subsequent delivery to the mining company.
Primas Dry Ice Blasting removed the paint and primer from the stitch welds holding 800 washers to 200 conveyor brackets in the client's yard. A containment tent was erected to capture and efficiently dispose of the contaminants removed by the blasting process.
The paint and primer was efficiently and effectively removed from all of the stitch welds and washers. By providing a smooth, white steel finish the client was able to seam weld all of the washers without any further surface preparation. Primas Dry Ice Blasting did not damage any of the bracket substrates and negative environmental impacts were eliminated through the use of an effective containment system. Dry ice cleaning in situ significantly reduced the amount of coordination and transportation time, risk and expense when compared to having the conveyor brackets removed and abrasive blasted off site, then returned for re-welding and then being removed again for sand blasting, painting and delivery.