|
一行白鹭上青天 发表于 2021-5-28 17:08* s6 H/ W) {3 ~& R b7 b& O- ~' l
有的报告里面列了,有的,没有列,不是同一家机构。
& J2 u$ r+ E$ p: C' U2 `* d; i* W. T
请问列不列入CDF有没有什么依据?水压开关也是开 ...
( g. N! @( Y# D! n; ?3 F$ 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 k' U) S/ ? u4 D+ _2 S0 ?
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
" @ n4 ` m( [2 p6 ga) 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”.; @* H" g; r% x( z
b) Components, which have specific requirements in the end product standards.
, J/ f& t6 a7 w8 r, X# vc) Components, which have requirements in the National Standards included in the evaluation% r9 u# F- Z. A% A7 K% a0 b7 Y; k( ~% c) H
d) Materials, which are critical to maintain compliance with the standard (such as corrosion requirements, flammability)
$ Z9 q/ \& d+ h" j- @, D; ~e) Professional judgment of the CBTL/NCB' ^. g! w$ X6 ~
|
|