BULETIN ŞTIINŢIFIC, Seria C, Volumul XXIV, Fascicola: Mecanică, Tribologie, Tehnologia Construcţiilor de Maşini SCIENTIFIC BULLETIN, Serie C, Volume XXIV, Fascicle: Mechanics, Tribology, Machine Manufacturing Technology ISSN 1224-3264 71 • Palliative maintenance: maintenance applied to machinery and equipments at the end of working time, made without schedule.