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25 Expelled parts( ~; d9 h7 { i% J2 K. N
25.1 Where expelled parts could constitute a SAFETY HAZARD protective means shall be provided.
p; t1 O& @6 d8 [# B2 |3 E: \Compliance is checked by inspection for the presence of protective means.
' T1 b* z1 J/ [7 x8 K6 ^9 U9 p" [25.2 A graphical display vacuum tube whose maximum face dimension exceeds 16 cm shall either be, R/ N8 `9 ?) U: s
intrinsically safe with respect to effects of implosion and to mechanical impact, or the ENCLOSURE of the$ Q- W( L( X% P! R( F3 c
EQUIPMENT shall provide adequate protection against the effects of an implosion of the tube.) W+ H8 {* @) d/ c+ Q" v1 B
A non-intrinsically safe tube shall be provided with an effective protective screen which cannot be0 J% C3 ~# x# [9 Q9 {% x; w" M# P
removed without the use of a TOOL; if a separate screen of glass is used, it shall not be in direct contact: `8 |1 M! q9 D; u) F7 ~! A
with the surface of the tube.
2 H7 a4 ~- a: P1 cThe tube shall be tested as specified in IEC Publication 65, unless a certificate of the testing is provided. |
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