English to Russian Tech/Engineering Metallurgy / Casting ����� � ����������� �������� ����������� �������

The productive utilization of the aluminium extrusion press, which converts billet to extrusion can be analyzed using traditional work study methods to describe the utilization of time. Productive work is only done when the press is extruding good material. However , much of the available time is lost when the press is not manned. Additional time is lost during the tests , when the press is stopped because of full tables, when training operators or during ***breakdowns***. Even when ostensibly operating , time is lost when the press is idling, when the press is subjected to minor stops during die changes, or during the dead cycle between successive billets.

Первое, что приходит в голову - "поломки", но нашел еще "раскаты", "разрушения первичной структуры" - не об этом ли может идти речь?