A pressure vessel has a seamless carbon steel pipe shell of 288.95 mm inside diameter and 17.45mm nominal thickness. The pipe has an allowable stress of 138 MPa. The vessel flat heads are unstayed and made of carbon steel plate, stress = 118 MPa. There are no seams in the head and the MAWP of the vessel is 11600 KPa, there is no corrosion allowance, find if the weld meets the code requirements. i) Minimum thickness of shell ii) Minimum thickness of shell for the weld detail shown iii) Minimum required flat head thickness iv) Minimum dimension of tp