In order to arrive to this point the team consulted the personnel involved in daily activities in the
workshops, obtaining valuable information which, when placed together, offered a bigger picture of the entire
process, from the point of view of the operator. The analytical, managerial experience (Tang et al., 1987) of
the people in the quality circle made it possible to find the answer: the degreaser solution from degreaser bath
(A.) is not introduced in the treatment and processing system and then released in the sewage system, but
instead it is reintroduced in pretreatment in the place of the water in basin (B.) on the ferrous products
pretreatment line (1.).