Patent ID: 7318039
Filing Date: 2008-01-08
Classification: G06Q

Abstract:
1. A project risk management system comprising: a process plan database that records work-process information defined by work information, including at least one information piece including work type, type of parts to be worked on, number of parts to be worked on, total weight of parts to be worked on, occupational category of workers, name of engineering work company, planned number of man-hours, planned construction period, weather during work, work area, presence/absence of scaffolding, use/nonuse of material handling device, and number of workers; a constraint condition database that records definition information, including at least one information piece including time definition of possible start time of work process, possible finish time of the work process, and sequence of work processes; a probability distribution database that records, as probability distribution, at least one information piece including a variation-amount for the start time of work process, a variation-amount for the finish time of work process, and a variation-amount for the construction period; and a process-correction-condition input device that corrects arbitrarily at least one information piece of the work information of a work process, wherein when an arbitrary correction to an information piece of the work information is made by the process-correction-condition input device, the project risk management system: calculates, as probability distribution, at least one of a variation-amount for the start time, a variation-amount for the finish time, and a variation-amount for the construction period of a work process which will occur due to the correction, by using the information recorded in the probability distribution database, and calculates, based on the information recorded in the constraint condition database, at least one of a variation-amount for the start time, a variation-amount for the finish time, and a variation-amount for the construction period of a work process which is affected by the work process in which variation occurred, as summation of probability distribution of an affecting work process and probability distribution of an affected work process, wherein at least one of a variation-amount for the start time, a variation-amount for the finish time, and a variation-amount for the construction period of an overall process plan is calculated by using probability distribution.