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一行白鹭上青天 发表于 2021-5-28 17:08
, s, c; U5 S! l: T有的报告里面列了,有的,没有列,不是同一家机构。
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3 K: Z2 q( D+ n. l$ G请问列不列入CDF有没有什么依据?水压开关也是开 ...
8 f& `4 R3 L+ x0 [, i4 _( ^2 Cod 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, p" A0 C; m" Z1 y' @! B8 }
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 Z% c% s3 i U. o6 u3 U' q& Z
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”.; t2 {( S0 H0 I& X5 d3 `7 p
b) Components, which have specific requirements in the end product standards.6 _" u9 `/ s8 K5 l5 V
c) Components, which have requirements in the National Standards included in the evaluation% r9 u# F- Z. A% A
, V* c, m+ @0 V" Td) Materials, which are critical to maintain compliance with the standard (such as corrosion requirements, flammability)
" a# u$ R% x3 }( m6 e% B% _e) Professional judgment of the CBTL/NCB" C2 l! |2 P7 u; r1 U" C
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