Abstract
In system development projects, issues from the viewpoint of QCD might occur. This is considered due to the insufficient estimate activities at proposal, vague assumptions, and vague succession of estimate grounds from person in charge of proposal, etc. To act on these causes and prevent risk occurrence, I made estimate sheets and promoted use of them at proposal as part of risk management By doing so, I tried to execute certain integrated change control. I re-realized therefore the importance of preventing lack of examination at proposal and clarification of assumptions, that the process to specification fixation is just an important phase that decides project size, leads a system development project to success, it is also a key to strict observance of QCD. I report from a series of this time attempts, on the issues that occurred when risk responses have been executed, the solutions to them, actions taken when the risk has occurred, their effects and so on.
