§57.6602. Static electricity dissipation during loading.
30 C.F.R. § 57.6602
When explosive material is loaded pneumatically into a blasthole in a manner that generates a static electricity hazard—
An evaluation of the potential static electricity hazard shall be made and any hazard shall be eliminated before loading begins;
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;
Wire-countered hoses shall not be used;
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
Plastic tubes shall not be used as hole liners if the hole contains an electric detonator.
Notes, amendments, and revision history
Source
Source: 61 FR 36801, July 12, 1996, unless otherwise noted.
Authority
Authority: 30 U.S.C. 811.
Source
Source: 50 FR 4082, Jan. 29, 1985, unless otherwise noted.