|
一行白鹭上青天 发表于 2021-5-28 17:08
9 z; m" k5 w1 T# K$ `. E有的报告里面列了,有的,没有列,不是同一家机构。* g; N; G O5 Z( A0 S* T( S6 n9 u
7 A3 H" J! ?5 j+ m( [
请问列不列入CDF有没有什么依据?水压开关也是开 ... 6 h9 v) B7 Y: k/ l& l, n9 T
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 `" V; `% x6 i% R& G+ 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 Z
7 C0 N7 g6 E' Z- Ka) 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”." o& I/ z3 O) d: g6 X; ]! d' f( c8 _
b) Components, which have specific requirements in the end product standards.0 s" p" [; U9 A7 z4 m/ |3 F
c) Components, which have requirements in the National Standards included in the evaluation% r9 u# F- Z. A% A/ g. I2 V( m$ k) g9 g
d) Materials, which are critical to maintain compliance with the standard (such as corrosion requirements, flammability)
- Q. b5 F; H$ F( B; V* Me) Professional judgment of the CBTL/NCB
4 _* m; S Z! b6 K |
|