California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 7 - General Industry Safety Orders
Group 18 - Explosive Materials
Article 116 - Handling and Use of Explosive Materials in Blasting Operations
Section 5293 - Misfires
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) After each shot the blast area shall be examined for misfires. If any are found, or suspected to exist, they shall be reported to the person in charge. Steps shall be taken to eliminate all undetonated explosive materials.
(b) In case of a detonator misfire, the shot area shall be made safe under competent supervision by one of the following means after a 30-minute wait following electric or non-electric shock tube blasting, or a 60-minute wait following fuse cap blasting:
(c) If explosive materials are suspected of burning in a hole, all persons in the endangered area shall move to a safe location and no one shall return to the hole until the danger has passed, but in no case within 1 hour.
(d) Holes shall not be drilled where there is danger of intersecting a charged hole of misfired explosives.
(e) No other work shall be performed in the danger area except that necessary to remove the hazard of the misfire. No other employees except the licensed blaster and the necessary crew shall be in the danger area when a misfire hazard is being removed.
1. New
subsection (e) filed 3-28-75; effective thirtieth day thereafter (Register 75,
No. 13).
2. Amendment of section and new NOTE filed 9-24-97;
operative 10-24-97 (Register 97, No. 39).
3. Amendment of subsection
(b), new subsection (c) and subsection relettering filed 7-11-2003; operative
8-10-2003 (Register 2003, No. 28).
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
