Worldwide the question always arises as to why the construction industry seems to generate an enormous amount of delay claims as compared to any other industry. In the field of Nuclear Power Plant (NPP) projects, this issue becomes more acute due to both the complexity and precision needed in the construction progress. Non-excusable delays are not compensable, and the Contractor is expected to absorb any penalties related to non-excusable delays, but excusable delays may be compensable, and again this would typically be specified in the contract between the Employer and the Contractor. The reverse of the Foresight method is this Hindsight method, and this analysis method is often referred to as the Collapsed As-Built Method. Delays are analysed on this “snapshot of the schedule based on the project documents”, and the schedule is calculated based on the delays – the process is then repeated for the next window.