一可靠性的概念并不是新的,但其广泛使用的含义,就是一个设备在给定的时间内,在预定的应用中,能正常工作的概率。把抽象的可靠性用数学形式的概念表示,这就是可靠性技术的出发点,也只有用技术上统一而明确的概念来定义可靠性,产品及系统的可靠程度才真正有了科学的基础。就电站设备而言,就是在一定寿命期间內,在预定的条件和参数下,能够稳发满发,热耗达到保证值。所谓正常工作,并不是说设备没有缺点,有些性能没有达到100％的要求,用户也是可以接受的。而在整个寿命期内,其性能 The concept of reliability is not new, but its widespread use implies the probability that a device will work properly in a given application at a given time. Representing abstract reliability in mathematical notions is the starting point for reliability techniques. The reliability of products and systems is truly scientifically based only when reliability is defined by a technologically uniform and definitive concept. In terms of power station equipment, it is within a certain life span, under the preconditions and parameters, can be stable and full of hair, heat loss to ensure that the value. The so-called normal work, not to say that the equipment has no shortcomings, some of the performance did not meet the 100% requirement, the user is acceptable. In the entire life, its performance