shipyard machinery and power tool safety (including...
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1
Shipyard Machinery and Power Tool Safety (Including Guarding)
A Hazard Prevention Course
Conducted By The Port of San Diego Ship
Repair Association
This material was produced under grant SH-31243-SH7 from the Occupational Safety and Health Administration, U.S. Department of Labor. It does not
necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products or organizations imply
endorsement by the U.S. Government.
1
Table of Contents
2
Course Objectives
3
OSHA
4
Recent and Real Machinery Hazards
5
Machinery Hazards Exercise
6
A lathe is a machine that
rotates the workpiece about
an axis of rotation to perform
various operations such
as cutting, sanding, knurling,
drilling, deformation, facing,
turning with tools that are
applied to the workpiece to
create an object with
symmetry about that axis.
Your Risk Exercise
Where Mechanical Hazards
Occur
Point of Operation
Power Transmission Device
Other Moving Parts
Controls
Hazards to be Guarded
Motions
Rotating - Gears
Transverse Motion - Belts
Reciprocating - Table
In-Running Nip Points
Rotating - Gears Reciprocating - Table
Action
Cutting – Band Saw
Bending – Bending Machine
Punching – Metal
Punch
Shearing – Shearing
Machine
Exercise
13
Applicable Regulations
Machine Guards and Devices
Machine Guards –
Fixed and Interlocked
Fixed
Interlocked
Machine Guards –
Adjustable and Self-Adjusting
Adjustable Self-Adjusting
Bandsaw blade
Circular table saw
Exercise From a safety perspective identify the pros and cons of
each type of guard below.
18
Guarding Devices –
Presence Sensing and Pullback
Pullback
Presence sensing device Cables
attached to
operator’s
hands or
wrists
Removes
hands from
point of
operation
during
danger
period
Guarding Devices –
Restraint and Safety Controls
Restraint
Safety Controls
Safety Cable
Guarding Devices –
Gates and Two-Handed Controls
Gates Two-Handed Controls
Safeguarding by Location and
Distance
Exercise
1
2
3
5
Specific Machines
Hazards and Solutions
24
Abrasive Wheel and Grinder
• Rotating
(Motion)
• Cutting
(Action) Protective Shields
Abrasive Wheel and Grinder
Hazards
Abrasive Wheel and Grinder
Solutions
Band Saw
• ??????
(Motion)
• ??????
(Action)
Band Saw
Hazards
Band Saw
Solutions
Properly adjust the blade guide
to fit the thickness of the stock
and ensure the guard is as
close as possible to the stock.
Shop Saw (Cut-Off Saws)
• Rotating
(Motion)
• Cutting Miter Saw Chop Saw
(Action)
Shop Saw
Hazards
Shop Saw
Solutions
EXCERCISE
34
Drill Press
• ???????
(Motion)
• ???????
(Action)
Drill Press
Hazards
Drill Press
Solutions
Wood Lathe
• ???????
(Motion)
• ???????
(Action)
Wood Lathe
Hazards
Wood Lathe
Solutions
Planer
• ???????
(Motion)
• ???????
(Action)
Planer
Hazards
Planer
Solutions
Milling Machine
• ???????
(Motion)
• ???????
(Action)
Milling Machine
Hazards
Milling Machine
Solutions
Roll-Forming & Roll-Bending
• ???????
(Motion)
• ???????
(Action)
Roll-Forming & Roll-Bending
Hazards
Roll-Forming & Roll-Bending
Solutions
Machine Guarding Checklists
Questions/Comments
52
Portable Power Tools
53
Power Tool Hazards - Exercise
54
Applicable Regulations
OSHA Precautions
56
More OSHA Precautions
57
Controls and Switches
58
Specific Tool
Hazards and Solutions
59
Abrasive Grinders
60
Exercise
61
Abrasive Grinder Hazards
62
Abrasive Grinder
Hazard Solutions
63
Hazard Solutions - Preparation
64
Hazard Solutions - Inspection
65
Hazard Solutions – Ring Test –
Replacing the Wheel
66
Hazard Solutions – PPE – Switch
the Grinder On
67
Hazard Solutions – Grinding –
Switch the Grinder Off
68
Hazard Solutions–Other Precautions
– Maintenance/Storage
69
Hand Grinder Do's and Don’ts
70
What Happened?
71
Exercise
72
Portable Power Drills
73
Portable Power Drill Hazards
74
Exercise
75
Portable Power Drill Solutions
76
Before You Pull The Trigger!
77
While Drilling!
78
More While Drilling!
79
Drilling Don’ts
Portable Power Drill Exercise
81
Sawzalls
82
Sawzall Hazards
83
Sawzall Solutions
84
Before You Pull The Trigger!
85
While Sawing!
86
Sawzall Don’ts
More Sawzall Don’ts
Sawzall Exercise
89
Needle Gun
90
Needle Gun Hazards
91
Needle Gun Solutions
92
Before You Pull The Trigger!
93
While Needle Gunning!
94
Needle Gunning Don’ts
Needle Gunning Exercise
96
97
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