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一行白鹭上青天 发表于 2021-5-28 17:08( i5 l% J3 ]: K; O4 P
有的报告里面列了,有的,没有列,不是同一家机构。
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请问列不列入CDF有没有什么依据?水压开关也是开 ...
, B2 D5 H6 ?, i) S8 R' h8 i( Jod 2020里有定义,但更多的是主观因素,所以有的元件理解起来会有会有偏差; D, ?; e4 U- U) P$ E
4.7.2 The information to be included in the critical components and materials table shall be based on the following ~/ P+ t. J; l/ }' {9 Z3 W. z% b, q( x. R' i5 _; d( \
a) The CTL clarification: “A safety critical component can only be determined upon a preliminary examination/evaluation of the electrical diagram/design/construction. When the design of the product is such that a determined component, in case of failure, can compromise the safety aspect, this component is defined as “safety critical”.
4 r' u# ?( |& M; _& Q0 ~3 @b) Components, which have specific requirements in the end product standards.# ]7 k x; e8 {, e/ D) n: ?. F
c) Components, which have requirements in the National Standards included in the evaluation% r9 u# F- Z. A% A
( z+ [7 \2 q- \& ?! v# b& wd) Materials, which are critical to maintain compliance with the standard (such as corrosion requirements, flammability), U" U. y0 R& Q& z; h
e) Professional judgment of the CBTL/NCB
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