Pipework exerts forces and moments on a vessel due to thermal expansion or contraction, internal pressure and dead weight. On a project, pipework design usually occurs after the order of the vessel has been placed. Hence standard loads are specified as provision against the actual loads calculated later in the design of the pipework. This guideline specifies an approach that the pressure vessel designer can apply assuming that the loads act on the nozzles of pressure vessels that are imposed by the connected pipe system. These loads should be included in the mechanical design of pressure vessels during the procurement phase of a project. The Piping Stress Engineer shall ensure that the loads on the nozzles of the pressure vessels are within these values.