Merits

Demerits

(a)   Useful in investigating qualitative or logical properties of concurrent systems.

(b)  Useful tool in analysis of a Petri net via tools like deadlock avoidance, boundedness and fairness.

(c)  Important tool for modelling various aspects of a manufacturing system like,

• Synchronization

• Concurrency

• Priorities

• Conflict, etc.

(a)   Even though it serves as a tool for modelling some major properties, a major demerit in the classical Petri net remained that all the enabled transitions were thought to fire immediately. Also there was no inclusion of time factor within the Petri net. This demerit was resolved by using the Stochastic Petri nets (SPN) or Generalised Stochastic Petri nets (GSPN).