IEC 60092-506 pdf download

IEC 60092-506 pdf download Electrical installations in ships – Part 506: Special features – Ships carrying specific dangerous goods and materials hazardous only in bulk
4.3 Dangerous goods as defined in 1.2b) and 1 .2c)
4.3.1 Classes 4.1, 4.2, 9 and MHB capable of creating explosive dust atmosphere
Hazardous areas (comparable with zone 1 ):
a) closed cargo spaces as indicated in Annex B, item A;
b) ventilation ducts, if any, serving the spaces identified in 4.3.1 as indicated in Annex B,item B.
4.3.2 Class 4.3 capable of creating explosive gas atmosphere
• Hazardous areas (comparable with zone 1 ):
a) closed cargo spaces as indicated in Annex B, item A;
b) ventilation ducts, if any, serving the spaces identified in 4.3.2 as indicated in Annex B, item B;
c) areas on open deck, or semi-enclosed spaces on open deck, within 1 ,5 m of any
exhaust ventilation outlet of a hazardous area as indicated in Annex B, item G;
d) enclosed or semi-enclosed spaces having a direct opening into any of the areas as identified in 4.3.2
a) or 4.3.2
b) as indicated in Annex B, item C, unless appropriate measures are taken to prevent flammable gas or dust entering such spaces as indicated in Annex B, items D, E or F;
• Extended hazardous areas (comparable with zone 2):
e) Enclosed or semi-enclosed spaces having a direct opening into any of the areas identified in 4.3.2a) or 4.3.2
b) which are provided with the closing arrangements indicated in Annex B, item D, and inside the air lock itself if arranged as indicated in Annex B, item F;
f) Areas of 1 ,5 m surrounding open or semi-enclosed spaces of Zone 1 as specified in 4.3.2c) as indicated in Annex B, item G.
4.3.3 Dangerous goods class 2.1 , 3, 6.1 * and 8*, as defined in 1 .2
• Hazardous areas (comparable with zone 1 ):
a) closed cargo spaces as indicated in Annex B, item A;
b) ventilation ducts, if any, serving the spaces identified in 4.3.3 as indicated in Annex B, item B;
c) areas on open deck, or semi-enclosed spaces on open deck, within 1 ,5 m of any exhaust ventilation outlet of a hazardous area as indicated in Annex B, item G;
d) enclosed or semi-enclosed spaces having a direct opening into any of the areas as identified in 4.3.3
a) or 4.3.3
b) as indicated in Annex B, item C, unless appropriate measures are taken to prevent flammable gas or dust entering such spaces as indicated in Annex B, items D, E or F.
• Extended hazardous areas (comparable with zone 2):
e) enclosed or semi-enclosed spaces having a direct opening into any of the areas identified in 4.3.3
a) or 4.3.3
b) which are provided with the closing arrangements indicated in Annex B, item D, and inside the air lock itself if arranged as indicated in Annex B, item F;
f) areas of 1 ,5 m surrounding open or semi-enclosed spaces of zone 1 as specified in 4.3.3c) as indicated in Annex B, item G.