Machine Guarding
Recognizing machine hazards and controlling them: motions, actions and nip points, OSHA 1910 Subpart O and the ANSI B11 standards, the hierarchy of controls and ISO 12100 risk assessment, required performance levels, fixed, interlocked and adjustable guards with Table O-10 opening limits, light curtains, two-hand controls and other devices positioned with the ANSI B11.19 and OSHA formulas, functional safety, emergency stops and stopping time, common machines, preventing bypassing, lockout and the minor servicing exception, acceptance reviews, inspection and a capstone shop assessment.
HSE-215 12 lessons · 5 h 20 min
Offered by HSM University · Safety Training
This is the American version of this course. See the Canadian version.
What you'll learn
- Identify machine hazards at the point of operation, in power transmission parts and in other moving parts, including nip points
- Locate the US machine guarding rules, including OSHA 1910 Subpart O and the ANSI B11 standards
- Apply the hierarchy of controls and the ISO 12100 three-step method to machine hazards
- Carry out a task-based machine risk assessment and determine a required performance level with the ISO 13849-1 risk graph
- Select fixed, interlocked, adjustable and self-adjusting guards and check them against safety distance tables
- Position light curtains, two-hand controls and other safeguarding devices using safety distance formulas
- Explain how performance levels, categories and validation make safety-related control systems reliable
- Describe stop categories, emergency stop requirements, stopping-time measurement and the prevention of unexpected start-up
- Recognize the hazards and typical safeguards of presses, saws, grinders, conveyors, robots and other common machines
- Prevent the defeat of safeguards and connect machine guarding with lockout during maintenance and cleaning
- Build safeguarding into purchasing, acceptance testing, modification and commissioning reviews
- Inspect and audit machine safeguarding, learn from incidents and prepare a risk-ranked guarding action plan
Course content
12 lessons · 5 h 20 min total · final exam
- 1 Why machines injure: motions, actions and nip points 28 min · quiz
- 2 OSHA machine guarding standards and the law in the US 24 min · quiz
- 3 Inherently safe design and the hierarchy of controls 27 min · quiz
- 4 Machine risk assessment 28 min · quiz
- 5 Guards: fixed, interlocked, adjustable and self-adjusting 26 min · quiz
- 6 Safeguarding devices: light curtains, two-hand controls, mats and scanners 27 min · quiz
- 7 Control reliability and functional safety basics 26 min · quiz
- 8 Emergency stops, stopping performance and safe restart 28 min · quiz
- 9 Guarding common machines: presses, saws, grinders, conveyors and robots 27 min · quiz
- 10 Guard removal, bypassing, maintenance and lockout 27 min · quiz
- 11 New, used and modified machines: pre-start reviews, purchasing and conformity 26 min · quiz
- 12 Inspection, auditing, incident lessons and capstone: guarding a fabrication shop 26 min · quiz
- E Final exam 20 questions
Requirements
Recommended background. You can start any course at any time.
Description
Recognizing machine hazards and controlling them: motions, actions and nip points, OSHA 1910 Subpart O and the ANSI B11 standards, the hierarchy of controls and ISO 12100 risk assessment, required performance levels, fixed, interlocked and adjustable guards with Table O-10 opening limits, light curtains, two-hand controls and other devices positioned with the ANSI B11.19 and OSHA formulas, functional safety, emergency stops and stopping time, common machines, preventing bypassing, lockout and the minor servicing exception, acceptance reviews, inspection and a capstone shop assessment.