A considerable part of the distribution utility assets are cable systems. The XLPE cables with their accessories such
as joints, terminations and ducts are extensively used in distribution grids. So analyzing their potential failure modes causes and effects could be more important to increase system reliability, safety and maintainability. This study is a part of the project “consultancy services for preparation of network asset maintenance standards & associated asset management documentation” that carried out by Monenco consulting engineering company (Iran) for Majan Electricity Company SAOC (MJEC), Oman. In this study, function and characteristic of each cable system component are defined