APPLICATION OF FAILURE MODE CRITICAL ANALYSIS IN CONCRETE MIX BATCHING PLANT USING MCDM METHODS by Lovelesh Seth
for the development of country construction industry plays a vital role in growth and development. Indian construction industries are required to make a world class vision for the forthcoming world class projects in India as well as in abroad. For production in construction industry concrete mix batching plant is considered as one of the most critical equipment which helps in practising or mixing the various concrete mix ingredients either by mass or by its volume collectively into the mixing unit in plant as so to get the desired quality concrete mix as per design. In construction industry batching plants are highly loaded with work in order to complete the set target. So there is a huge risk of failure of those machines as the machines are overloaded. So machines require proper and timely maintenance strategy so as to avoid sudden breakdown during its operation which may lead to not even the stoppage of that machine but may also lead to the stoppage of complete production which involves that machine. The research work is carried out considering a case study held in one of the most renowned construction company LARSEN and TOUBRO Limited at its project site at Six Lanning of Delhi Agra Road Project. The main aim of the research work carried out in the thesis was to allocate the objective weights to maintenance criterion. Shannon Entropy approach is utilized for calculating the criteria weights so as to find out the weight of criterion and these weights are used for maintenance criticality ranking which is generated by using three multi criteria decision making (MCDM) approaches(SAW, TOPSIS, VIKOR). Best maintenance strategy is developed considering twelve probable reasons of failure recognized, the most critical modes of failure according to TOPSIS, VIKOR and SAW rankings are Loosen blade bolts (D9), Mixer Shaft facial axial seal (D1), Solidification Time (D10), Load cell wiring (D12) respectively.