A rail-mounted bucket wheel stacker reclaimer had recently been refurbished following a partial structural failure, but before it could be returned to service it was necessary to weigh the machine to confirm its as-built condition matched the design intent for balance, stability, slew bearing loads and wheel loads.

LEC prepared a weighing method statement and undertook on-site supervision of the weighing, which was undertaken by jacking the eight-wheel bogie structures.

LEC then processed the site measurements to calculate the total weight and weight distribution (centre of mass) of the stacker reclaimer, and compared these to the design values to determine whether re-ballasting might be necessary to ensure the slew bearing service life would not be compromised due to an out-of-balance condition.