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25 Expelled parts
$ M& R! Z9 N; E! E+ z25.1 Where expelled parts could constitute a SAFETY HAZARD protective means shall be provided.! j$ _4 ^% b7 B& E
Compliance is checked by inspection for the presence of protective means." X' n) \8 P, o A; c" Y7 G6 \
25.2 A graphical display vacuum tube whose maximum face dimension exceeds 16 cm shall either be
+ s* J F) G/ Y ]; R- |6 mintrinsically safe with respect to effects of implosion and to mechanical impact, or the ENCLOSURE of the* @2 n, V. y* {, c. B& a
EQUIPMENT shall provide adequate protection against the effects of an implosion of the tube.
0 W& ? H& P2 s/ f5 t2 GA non-intrinsically safe tube shall be provided with an effective protective screen which cannot be: z9 @, A# G& F5 M, m. _
removed without the use of a TOOL; if a separate screen of glass is used, it shall not be in direct contact
1 W, w& k$ q) i( Lwith the surface of the tube.
1 }+ K6 B$ C; _6 V0 W: W) W1 S. z: aThe tube shall be tested as specified in IEC Publication 65, unless a certificate of the testing is provided. |
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