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25 Expelled parts# z' j+ s) @' u! |
25.1 Where expelled parts could constitute a SAFETY HAZARD protective means shall be provided.
0 q$ h( d* W. [, i2 W% j, u/ N sCompliance is checked by inspection for the presence of protective means.
8 |2 d$ k1 H# ^25.2 A graphical display vacuum tube whose maximum face dimension exceeds 16 cm shall either be
) N) P0 _/ ~& x" g9 _& h. I+ s' Lintrinsically safe with respect to effects of implosion and to mechanical impact, or the ENCLOSURE of the
# g% u6 A5 }! s! w9 eEQUIPMENT shall provide adequate protection against the effects of an implosion of the tube.
# H' n% v1 k) W- S F( a3 IA non-intrinsically safe tube shall be provided with an effective protective screen which cannot be
g* K+ E6 }( O$ C0 Zremoved without the use of a TOOL; if a separate screen of glass is used, it shall not be in direct contact
" V& T# j8 h7 I' ?3 m3 Nwith the surface of the tube.2 x0 L7 m# P6 [
The tube shall be tested as specified in IEC Publication 65, unless a certificate of the testing is provided. |
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