This work presents a novel systematic approach for the construction of domain ontolog ies . The s ugge sted approach uses a semi - automatic construction methodology . F or this study , parent - child concept pairs are taken from a previous work. Novel contributions include bu ilding and completing branches, introducing new relations , and resolving inconsistencies and contradictions. For the p rocess s ystems en gineering (PSE) domain the ISA88 Standard is chosen as a promising starting point for automatic text processing. Finally, this work concludes with a discussion of the ISA88 S tandard based on the conclusions tha t can be obtained from the application of this semi - automatic construction methodolog