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Subchapter 4. Construction Safety Orders
Article 27. Powder-Actuated Tools
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§1691. Operation.

The employer shall require that:

(a) Tools be operated in accordance with the manufacturer's instructions.

EXCEPTION: Loads and fasteners meeting Section 1691 (f).

(b) Eye or face protection be worn by operators and assistants when the tool is in use.

(c) Prior to use, the operator inspect the tool to determine that it is in proper working condition in accordance with the testing methods recommended by the manufacturer of the tool.

(d) Any tool found not to be in working condition be immediately removed from service, tagged "DEFECTIVE" and not used until it has been repaired in accordance with the manufacturer's instructions.

(e) The shield, fixture, adapter, or accessory suited for the application as recommended and supplied by the manufacturer, be used.

(f) Only those fasteners and power loads recommended by the tool manufacturer for a particular tool, or those providing the same level of safety and performance, be used.

(g) Tools not be loaded until just prior to the intended firing time.

(h) If the work is interrupted after loading, then the tool shall be unloaded immediately.

(i) Neither loaded nor empty tools be pointed at any person.

(j) Hands and feet be kept clear of the open barrel end.

(k) The tool always be held perpendicular to the work surface when fastening into any material, except for specific applications recommended by the tool manufacturer.

(l) In the event of a misfire, the operator hold the tool firmly against the work surface for a period of 30 seconds and then follow the instructions set forth in the manufacturer's instructions.

(m) Power loads of different power levels and types be kept in separate compartments or containers.

(n) A sign at least 8 x 10 inches (20 x 25 cm), using boldface type no less than 1-inch (2.5 cm) in height, be conspicuously posted within 50 feet (15 m) of the area where the tools are being used. The sign shall bear wording similar to the following:



NOTE: Caution signs shall meet the requirements of Section 3340.

(o) Signs be removed promptly when no longer applicable.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. Amendment of subsection (d) filed 5-8-78 as procedural and organizational; effective upon filing (Register 78, No. 18).

2. Amendment filed 10-16-84; effective thirtieth day thereafter (Register 84, No. 42).

3. Amendment of subsection (n) Note filed 2-5-97; operative 3-7-97 (Register 97, No. 6).

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