IEC 61123:2019旨在定义验证项目/系统的可靠性是否符合规定要求的程序。假设需求被指定为成功的百分比（成功率）或失败的百分比（失败的百分比）。本文件可用于测试多个项目（执行的试验次数）并分类为通过或失败的情况。它也可用于重复测试一个或多个项目的情况。这些程序基于试验之间的成功或失败概率相同的假设（统计学上独立的事件）。包括固定试验/失败终止试验以及截断顺序概率比试验（SPRT）的计划。本文档包含大量表格，其中包含现成的-使用SPRT计划及其特征来应对供应商和客户的同等和非同等风险。对于恒定故障率/强度的可靠性符合性试验，IEC 61124适用。这第二版取消并取代了1991年出版的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更: 序贯概率比检验（SPRT）[1,2][1]近年来得到了显著发展[3,4,5]。该版本包含更短、更准确的测试、广泛的测试计划以及重要的附加特征数据，如下所示: 测试被显著截断（最大试验数量较低），而没有显著增加预期的决策试验数量（ENT）；给出了真实的生产者和消费者风险（α′，β′），并且非常接近名义风险（α，β）； 测试参数的范围很宽（失败率、风险和辨别率）； 测试计划包括各种风险比率（不仅限于等风险）； ENT的值是准确的，并在相关区域给出（供实际使用）； 包括测试集扩展指南（插值和外推）。 在附录C中，增加了Excel的累积二项分布函数的使用，以简化设计程序（第C.3条）。 关键词:验证项目/系统的可靠性是否符合规定的要求

IEC 61123:2019 is intended to define a procedure to verify if a reliability of an item/system complies with the stated requirements. The requirement is assumed to be specified as the percentage of success (success ratio) or the percentage of failures (failure ratio). This document can be used where a number of items are tested (number of trials performed) and classified as passed or failed. It can also be used where one or a number of items are tested repeatedly. The procedures are based on the assumption that the probability of success or failure is the same from trial to trial (statistically independent events). Plans for fixed trial/failure terminated tests as well as truncated sequential probability ratio tests (SPRTs) are included. This document contains extensive tables with ready-to-use SPRT plans and their characteristics for equal and non-equal risks for supplier and customer. In the case of the reliability compliance tests for constant failure rate/intensity, IEC 61124 applies. This second edition cancels and replaces the first edition published in 1991. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
The sequential probability ratio test (SPRT) [1, 2][1] has been significantly developed in recent years [3, 4, 5]. This edition contains shorter and accurate tests, a wide range of test plans, and significant additional characteristic data, as follows:
the tests are significantly truncated (the maximum trial numbers are low) without substantially increasing the expected number of trials to decision (ENT);
the true producer’s and consumer’s risks (α', β') are given and very close to the nominal (α, β);
the range of the test parameters is wide (failure ratio, risks and discrimination ratio);
the test plans include various risk ratios (not restricted to equal risks only);
the values of ENT are accurate and given in the relevant region (for practical use);
guidelines for extension of the test sets (interpolation and extrapolation) are included.
In Annex C, the use of the cumulative binomial distribution function of Excel that simplifies the procedure of designing has been added (Clause C.3).
Keywords: verify if a reliability of an item/system complies with the stated requirements