First I had a phone interview, then an assessment centre. During the assessment centre there was a face to face interview, a written exam and two group exercises.
Written exam: P & ID diagrams to analysis and explain
Group exercise 1: Given the scenario of being survivors from a plan crash. Were given a list of items and had to rank their utility and justify this in the form of group presentation
Group exercise 2: Had to constructs a structure out of spaghetti and get it to support a weight. The team with the tallest structure won.