Organizations based on their activities can be divided into different groups including project oriented, product oriented, knowledge based and economic orientated. Each of this organizations use specific tools and standards to accomplish excellence. Project oriented organizations such as oil, gas and petrochemical companies work in both private and governmental sectors. These companies in addition to paying close attention to technical and engineering standards should focus on the project management and evaluation models. This article while reviewing the scope of knowledge management requirements using the PMBOK® Guide: 2004 presents an applicable model that can be used for self-assessment of such organizations. This model applied in “Gas of Zanjan province” company which is an active corporation in gas distribution to city and rural areas.