Case Study: Use of Velocity Washers™ on reactors in a chemical corporation in the United States
Problem: The corporation had 3 reactors that go down for maintenance on a rotational basis every 3 months. They had issues removing the “Mini Core” at the bottom of the reactor, which should take 4 hours, but actually took a day and a half to open.The issue was galling as they get one thread of turn before the nut sticks. Tried Hydraulic Nut Wrenches, and worked slightly better, but that sheared the bolt so caused more issues. Needed a faster way to remove the mini-core as this is a critical path.
INTEGRA solution: We originally looked at Hydraulic Nuts for the issue, but the cost of outfitting 3 reactors with them was cost prohibitive. We then suggested looking at the Velocity Washers, which they tried on one of the reactors as a test. The “Mini Core” took less than an hour to remove, which was better than they had expected. They will now be installing Velocity Washers on each reactor and the Velocity Washers will become part of the bolting plan for the reactors.