In January 2007 the World Nuclear Association (WNA) established the Cooperation in Reactor Design Evaluation and Licensing Working Group (CORDEL WG) with the aim of stimulating a dialogue between the nuclear industry (including reactor vendors, operators and utilities) and nuclear regulators on the benefits and means of achieving a worldwide convergence of reactor safety standards for reactor designs. The Digital Instrumentation & Control Task Force (DICTF) of the CORDEL WG was set up in 2013 to investigate key issues in digital I&C related to the licensing of new nuclear power plants, and to collaborate with the International Electrotechnical Commission (IEC) and the Committee on Nuclear Regulatory Activities (CNRA) Working Group on Digital Instrumentation and Control (WGDIC). In the past 3 years CORDEL DICTF published reports on “Safety Classification of I&C Systems” ([16] & [17]) and “Defence-in-Depth & Diversity” [18]. The need for I&C modernization in nuclear power plants (NPPs) is due to the operation lifetime of the plants being more and more extended. As most of the main I&C related Codes & Standards are focused on the engineering of new nuclear power plant, the adaptation to modernization is challenging. The worldwide switch from the analog to digital automation technologies, the increasing scope of events to be within design basis (like complex failure scenario, I&C Common Cause Failure (CCF), cybersecurity threats), increasing complexity and lessons learned from the modernization projects carried out in the recent years lead to a situation where many operators have a very wide set of items to consider when planning for I&C modernization programs for their running plants.