5607.16.1 Blast warning signal system.
FC § 5607.16.1
A shot shall be fired as soon as possible after loading is complete. An audible warning signal made by an air whistle, air horn or other similar device shall sound before each shot is fired. All personnel working in or near the blast area shall be familiar with the warning signal system. Signs describing the warning signal system shall be posted at conspicuous locations at the job site, as approved by the department. The following audible warning signal system shall be used: 1. One long signal – Preparing to blast, (clear the blast area).
2.Two short signals – Ready to blast, (after the blaster checks that the blast area is clear).
3.Three short signals – All clear, (after the blaster completes post-blast procedures).
