Page 122 - Safety Memo

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Notes: 2. Hoisting or lowering electric tools by their cords is
prohibited. 1707(a)
» The followings shall not be required to be grounded.
2395.45 D. Powder-actuated tools (PAT) shall be approved for their
intended use as defined in 1505, or have California approval
i. Listed portable tools or utilization equipment numbers. 1684(a)(1),(2)
likely to be used in wet and conductive locations
if supplied through an isolating transformer with 1. Only trained workers holding a valid operator’s card may
an ungrounded secondary of not over 50 volts. use a PAT. 1685(a)(1)
ii. Listed or labeled portable tools and utilization 2. Containers must be lockable and bear a label that says
equipment protected by an approved system POWDER-ACTUATED TOOL on the outside. The storage
of double insulation. Where such a system is container must be kept under lock and key. 1687(a)
employed, the equipment shall be distinctively 3. The PAT must be provided with the following:
marked.
a. An operating and service manual
» Double-insulated type power-operated tools are not
required to be grounded. b. A power load and fastener chart
B. Guards required by the SOs must not be removed or c. An inspection and service record
deactivated. 3942 d. Repair and servicing tools. 1687(b)
C. Control switches for powered hand tools are subject to the 4. Limitations on the use of PATs are as follows:
regulations noted below:
a. Workers must not leave the tool unattended. 1690(b)
1. The following tools must be equipped with a constant-
contact (dead-man) on-off switch: 3557(a) b. Workers must not use the tool:
a. Drills 01. In an explosive environment. 1690(a)
b. Tappers 02. On hard or brittle material. 1690(c)
c. Fastener drivers 03. On easily penetrated or thin materials or materials
of questionable resistance unless backed.
d. Grinders
1690(d)
e. Disc and belt sanders
04. Within a 1/2 in. of the edge of steel. 1690(e)
f. Reciprocating saws
05. Within 3 in. of the edge of masonry. 1690(f)
g. Circular saws
06. On thin concrete. 1690(g)
h. Chain saws
07. On spalled areas. 1690(h)
i. Concrete vibrators
08. On existing holes. 1690(i)
j. Concrete breakers
5. Requirements for operating PATs are as noted:
k. Concrete trowels
a. Eye or face protection is required for operators and
l. Powered tampers assistants. 1691(b)
m. Jack hammers b. Operators must inspect the tool before using it.
1691(c)
n. Rock drills
c. Defective tools must not be used. 1691(d)
o. Tools similar to those above
d. Tools must not be loaded until ready for use. 1691(g)
132 Cal/OSHA Pocket Guide for the Construction Industry | June 2015 Cal/OSHA Pocket Guide for the Construction Industry | June 2015 133