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一行白鹭上青天 发表于 2021-5-28 17:08
6 H* q0 d% \. o) R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 ...
1 x n* g. v" t! J! K4 a+ Lod 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
- s/ F& n4 Y) H% H: k+ s$ |) Y4.7.2 The information to be included in the critical components and materials table shall be based on the following ~/ P+ t. J; l/ }' {9 Z9 V' P# B( K4 C% Q, v, P) r& J7 i" |
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”.
! E7 i4 h# |9 cb) Components, which have specific requirements in the end product standards.* E) M5 g: l0 J" p4 _; l0 y
c) Components, which have requirements in the National Standards included in the evaluation% r9 u# F- Z. A% A, M4 C& h1 ~. u) A
d) Materials, which are critical to maintain compliance with the standard (such as corrosion requirements, flammability)6 r" \+ s+ }: i9 J1 q1 R
e) Professional judgment of the CBTL/NCB
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