Abstract: An emergency plan is an important artifact used throughout emergencies. Therefore, it is crucial that this plan covers the different scenarios faced by emergency team and that the prescribed procedures generate the desired results. To achieve these goals, emergency plans need to be exhaustively tested prior to its adoption. Emergency teams usually use simulation to test plans, but it is an expensive approach, demanding the building of complex environments and tools to get realistic situations. To be ready to go through a simulation exercise, a plan should not have many or critical mistakes, otherwise the simulation exercise would be wasted. We present a paired approach to evaluate emergency plans before simulation exercises, by applying software engineering testing techniques: Formal technical review (FTR) and mutation testing. The expected result is a plan more ready to go through simulation, as many of the mistakes are eliminated prior to simulation.