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一行白鹭上青天 发表于 2021-5-28 17:08; W; ~2 j: u/ B/ g
有的报告里面列了,有的,没有列,不是同一家机构。
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: x6 {7 w0 \7 Y( e4 g4 a& y. p请问列不列入CDF有没有什么依据?水压开关也是开 ... 7 }5 J1 |/ {4 p
od 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5 Z$ k# D1 ~1 z, Y# F, q4 j
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( a" w2 V! `1 V; o; l9 s6 D, b
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”.1 r; U$ v1 ]* l1 D* Q
b) Components, which have specific requirements in the end product standards.
% l" \5 k* a- e; q: \+ nc) Components, which have requirements in the National Standards included in the evaluation% r9 u# F- Z. A% A+ |) ^: K6 J a8 I# l! |
d) Materials, which are critical to maintain compliance with the standard (such as corrosion requirements, flammability)
/ }: x) `) y5 ?4 I' Te) Professional judgment of the CBTL/NCB
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