Procurement of material occurred al

Procurement of material occurred along the phase of the project, so at the engineering phase, the team of procurement were already working for preparation of procurement. They had already started to register the list of vendors until Purchase Order (PO). So, at the construction phase, the material was ready and can be used without waiting. But the problem that usually occurs at EPC project is a type of material that is unique and large as the pipe of oil refining. For example, the EPC project of this case study is imported from abroad. The contractor should plan where to buy it, when to bring in, and how good process of delivery is because they are the key success of the supply chain.