Immature systems can be plagued by high costs, high risks, and schedule delays. System maturity models are utilized to quantitatively analyze a system’s readiness to indicate whether the system is prepared to proceed to the next acquisition phase during development. Most system maturity models are not robust enough to properly represent a system and assess its capabilities. Contemporary maturity models focus on individual technologies and fail to portray the importance of the integrations between technologies. System Readiness Level (SRL) was introduced to incorporate integration into a maturity assessment and to allow for a better evaluation of a system. However, adoption of SRL has been halted because of limitations due to the infancy of the model. This study demonstrates that by applying Petri Nets to SRL, a better maturity model is created, called Petri Net SRL (PNSRL). By incorporating Petri Nets, integrations are better represented, permitting a better system view that allows step-wise validation. PNSRL can be used with past SRL mathematical methods, which are simplified and easier to use. These enhancements offered by PNSRL allow an increased decision-making capability for projects. In this study, a capacity PNSRL method is developed to utilize Petri Net place capacities, offering a weighted SRL metric. Finally, PNSRL is verified against six SRL properties, showing that PNSRL is an acceptable maturity model.
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