§ 56.6602. Static electricity dissipation during loading.
124 words·~1 min read·
/us/cfr/t30/s§ 56.6602·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
When explosive material is loaded pneumatically into a blasthole in a manner that generates a static electricity hazard---
(a)An evaluation of the potential static electricity hazard shall be made and any hazard shall be eliminated before loading begins;
(b)The loading hose shall be of a semiconductive type, have a total of not more than 2 megohms of resistance over its entire length and not less than 1000 ohms of resistance per foot;
(c)Wire-countered hoses shall not be used;
(d)Conductive parts of the loading equipment shall be bonded and grounded and grounds shall not be made to other potential sources of extraneous electricity; and
(e)Plastic tubes shall not be used as hole liners if the hole contains an electric detonator.