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25 Expelled parts
6 }/ U8 w* p2 p# n! |2 ~: M25.1 Where expelled parts could constitute a SAFETY HAZARD protective means shall be provided.' k. q0 c& n# a+ C
Compliance is checked by inspection for the presence of protective means.. [* q, U5 u/ f- Z% |3 E( h
25.2 A graphical display vacuum tube whose maximum face dimension exceeds 16 cm shall either be% z) l) b% `+ _" W+ h2 I4 [
intrinsically safe with respect to effects of implosion and to mechanical impact, or the ENCLOSURE of the* L& N, u; R$ P. ~9 D' J' W
EQUIPMENT shall provide adequate protection against the effects of an implosion of the tube.
: R& R9 g8 S" A( }8 A4 e1 pA non-intrinsically safe tube shall be provided with an effective protective screen which cannot be( v5 ~7 Q. h5 U' I
removed without the use of a TOOL; if a separate screen of glass is used, it shall not be in direct contact) U2 P) T+ U$ B4 |, D9 H
with the surface of the tube.( l& Q* Y0 J- [+ O
The tube shall be tested as specified in IEC Publication 65, unless a certificate of the testing is provided. |
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