INTEGRA® Services Technologies introduced BlackHawk™ High Performance Hydraulic Nuts (HPHN) to the refinery owner to give them a quick, safe and controlled method to disassemble their oversized and damaged studs. BlackHawk™ HPHN’s are a space-saving, self-contained tensioning system engineered to reduce the time of removing bolted assemblies while maintaining the mechanical integrity of all the associated components.
BlackHawk™ HPHN’s were put into service on the reactor heads during a turnaround in 2011. Following the successful removal of the heads in April 2013, a refinery turnaround co-ordinator said, “…our investment has paid off. Typically, it would take three to four shifts to remove the (reactor head) nuts.” The co-ordinator went on to say, “We have not had to torch cut or damage any bolting while blinding and de-heading our reactors; this has never been done (here).”