A lift frame concept was conceived and adopted. The increase in weight required a careful review of each piece of rigging.įor the Manitowoc 18000 to complete this project effectively, the engineering group needed to come up with an alternative approach to the rigging. Additionally, as the project progressed, the weight of the double ACC module was increased to 295.2 tons – a 14% increase over the pre-planning lift weight. The group determined traditional spreader bar systems were too heavy and consumed excessive vertical space for the crane to make the lifts, given the crane configuration and ACC module lift weights. Several key factors were evaluated early on, including hook height, capacity, rigging arrangement, and rigging weight. In mid-April, Maxim’s engineering group was consulted and tasked with developing a wood mat support system, lift plans, and rigging designs. Pre-planning started early in 2017, and a Manitowoc 18000 with MAX-ER was selected to make the lifts.
On the project, Maxim was to make 12 lifts: eight double ACC module lifts weighing 260 tons each and four single ACC module lifts weighing 130 tons each.
Maxim’s scope was to lift air-cooled condenser (ACC) units from a heavy-haul unit and set them on top of a 75-foot-tall structure. was contracted to provide lifting services for a mechanical contractor at a New Jersey power plant.
