(a) Refer to pressure test certificate and data given below: List of equipment used = Hand pump, pump, pressure gauge Test Medium = Water Ambient air temperature =28C Maximum operating pressure (MOP) =35 Psi Pipe wall thickness =1.75 inch i. Caiculate the required hydro test pressure of the system. (5 marks) 1. Calculate the internal design pressure for an NPS 40 water pipeline if it is constructed of steel with a yield strength of 36000 psi. Assume a design factor of 0.72