Michigan Administrative Code
Department - Labor and Economic Opportunity
MIOSHA
General Industry and Construction Safety and Occupational Health Standards
General Industry Safety Standards
Part 38 - HAND AND PORTABLE POWERED TOOLS
POWDER ACTUATED TOOLS
Section R. 408.13874 - Power levels
Current through Vol. 24-16, September 15, 2024
Rule 3874.
(1) The power level for cased or caseless loads shall be identified by a color and numbering system as prescribed in table 2, except that caseless loads are limited to power levels 1 to 6. The combination of the case color and load color shall designate the load level. Both the explosive load and the carton or box shall provide visual indication of the load level.
(2) Studs or other fasteners used in a powder-actuated tool shall be only those specifically manufactured for use in such tools.
(3) Table 2 reads as follows:
TABLE 2
| Power Level | Case Color | Load Color | Nominal Velocity (+,- 45 fps) |
| 1 | Brass | Gray | 300 |
| 2 | Brass | Brown | 390 |
| 3 | Brass | Green | 480 |
| 4 | Brass | Yellow | 570 |
| 5 | Brass | Red | 660 |
| 6 | Brass | Purple | 750 |
| 7 | Nickel | Gray | 840 |
| 8 | Nickel | Brown | 930 |
| 9 | Nickel | Green | 1020 |
| 10 | Nickel | Yellow | 1110 |
| 11 | Nickel | Red | 1200 |
| 12 | Nickel | Purple | 1290 |
The nominal velocity applies to 3/8-inch diameter 350-grain ballistic slug fired in a test device and has no reference to actual velocity developed in any specific size or type of tool
