Crane bumps result from conflicting crane working patterns (for example, when two cranes are scheduled to work adjacent bays concurrently. XPS displays these interferences in the Quay Commander window as overlapping work-queue blocks.
Using Quay Commander, you can quickly optimize crane working patterns to avoid crane bumps and improve general crane efficiency. Your approach to resolving crane bumps depends on your operation (that is, your scheduled labor, available equipment, and time commitments). Possible solutions to resolving a crane bump:
Move the conflicting work-queue block forward or backwards in the shift. See Adjusting the plan to meet time commitments (on page 1).
Assign the conflicting work-queue block to another shift. See Move work queues between crane shifts (on page 1) or Assign work queues to crane work shifts (on page 1).
If there are shift overruns in the initial crane plan, you may want to resolve them before resolving any crane bumps. Resolving shift overruns first may also resolve crane bumps. See Identify a shift overrun (on page 1).