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25 Expelled parts. S+ K' h/ p5 [7 \6 @2 [
25.1 Where expelled parts could constitute a SAFETY HAZARD protective means shall be provided.' W5 H* t6 u$ ?: W5 w% `
Compliance is checked by inspection for the presence of protective means.
8 Z1 J, |& N5 @$ w8 y& _( s! |/ Z V25.2 A graphical display vacuum tube whose maximum face dimension exceeds 16 cm shall either be- _" q8 ?+ \ a" w9 k. V4 B: {
intrinsically safe with respect to effects of implosion and to mechanical impact, or the ENCLOSURE of the
- F$ F% H% m' H+ D# rEQUIPMENT shall provide adequate protection against the effects of an implosion of the tube.
0 V S( d, G% o7 A9 WA non-intrinsically safe tube shall be provided with an effective protective screen which cannot be
, J4 \4 f8 D& R1 F- Z! Premoved without the use of a TOOL; if a separate screen of glass is used, it shall not be in direct contact
3 S( @5 x0 A( X3 x2 iwith the surface of the tube.% v8 w8 t" X6 e% W! I
The tube shall be tested as specified in IEC Publication 65, unless a certificate of the testing is provided. |
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