Key Words: Reliability Calculation(신뢰도계산), Reliability Block Diagram(신뢰성블록다이어그램), FailureEnumeration(고장열거), Reliability Path(신뢰도경로)초록: 항공기, 철도, 선박과같은대형시스템들은전기, 기계적으로매우복잡한구조를가졌으며부품의수명만을고려한기존의유지보수에서탈피하여, 고장분석의시스템화를통해장치의고유수명과는관계없이발생가능한 우발고장도대처할수있는신뢰성기반의유지보수체계를연구하여야한다. 본연구에서는선행연구로필요한복합시스템의신뢰도계산방법에관한연구이다. 복합시스템의신뢰도를효과적으로계산하기위해시스템의RBD(Reliability Block Diagram)를구성하고인접행렬을사용하여RBD(ReliabilityBlock Diagram)를행렬로표현한다. 또한RBD(Reliability Block Diagram)행렬을통하여신뢰도경로행렬과고장열거행렬을구성하여시스템의신뢰도를계산한다. 본연구에서제안한알고리즘은자동화, 시스템화가가능하며현재개발하고있는신뢰도정보관리시스템및신뢰성기반유지보수시스템에서활용될것이다.Abstract: Recently, systems such as aircraft, trains and ships have become larger more complex. Therefore, thereliability calculation of these systems is more difficult. This paper presents a reliability calculation algorithm for acomplex system with a solution that is difficult to analyze. When the system has a very complex structure, it is verydifficult to find an analytical solution. In this case, we can assess system reliability using the failure enumerationmethod of the reliability path. In this research, we represent the reliability block diagram by an adjacent matrix anddefine the reliability path. We can find any system status by the failure enumeration of the reliability path, and thuswe can calculate any kind of system reliability through this process. This result can be applied to RCM(Reliability-Centered Maintenance) and reliability information-management systems, in which the system reliability iscomposed of the reliabilities of individual parts.