Dewalt DW493- User Manual

Policy: 049 Grinder Use and Operation

Rev 12/06/10

Page 1

Safety Policy and Procedure

Policy Number:

049

Authorized By:

The Cianbro Companies
Alan Burton

Title:

Grinder Use and Operations Program

Effective Date:

12/01/08

Page 1 of 11

1 Status

1.1

Update of existing policy, effective 12/06/10.

2 Purpose

2.1

To provide guidelines for using grinders safely on all Cianbro sites.

3 Applicability

3.1

This policy applies to all subsidiary companies and departments of The Cianbro Companies.

3.2

All organizations are required to comply with the provisions of this policy and procedure. Any
deviation, unless spelled out specifically in the policy, requires the permission of the Corporate
Safety Officer or designee.

4 Definitions

4.1

Angle Grinders: Are good choices for bigger work pieces too large or heavy to work at a bench.
Angle grinders are a hand held portable tool with wheels from 4 to 9 inches.

4, 5, and 6 inch

grinders are suited for grinding, cutting and finishing on concrete, masonry, and base metals

. 7,

8, and 9 inch

angle grinders are more suited for large areas, weld finishing, and dressing torch

cut steel.

4.2

Anti Kick Back Angle Grinders: Made by several different manufacturers features an electronic
control that detects rapid RPM decrease and shuts off the power, as when the wheel binds in
material, lessening the possibility of the tool kicking out and back towards the user. This type of
tool may be the best choice when cutting is necessary with .045(or similar) cut off wheels.

4.3

Bench Grinders: Stationary tool mounted to a bench, table, or stand. Available from 6 inch
wheel or larger (8 inch is most common). Ideal for sharpening hand tools and blades. Good for
shaping, smoothing, or polishing hand held parts. Often equipped with one wire wheel for rust
removal or polishing, and one abrasive wheel for grinding/sharpening.

4.4

Die Grinder (or pencil grinder): Is a specialty hand held power tool designed to shape and
polish the inside of cylindrical objects and hard to reach areas. With long thin spindle and shaft
they can reach deep inside a work piece. Mostly to be used for deburring, machining,
metalworking and piping applications. Die grinders can be used with many different shape and
size accessories and grinding tips. Most manufacturers do not allow a cut off wheel to be used
with this type of grinder.

4.5

Dynafile Grinder: Is an abrasive belt grinder/sander, ideal for grinding, deburring, blending,
finishing and surface conditioning of small, precision, or hard to reach areas. Used with grinding
belts from ¼ inch to ¾ inch wide and 18 inches long. Good for metal, plastic, composites, and
when precise control is needed.

4.6

Shrouded and Wet Method Grinders: Should be used when grinding concrete. To smooth form
work marks, or remove paint and glue. Most shrouded concrete grinders come with an attached
dust vacuum. Some are available with a water hose hook up for wet method of dust control.