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Machine Safety

Presentation on machine safety standards, risk assessment process and more.
by

Matthew Taylor

on 15 November 2016

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Transcript of Machine Safety

LOTO is the only way to make sure the machine is safe
Our equipment is safe, nobody has ever been hurt
We only use OSHA compliant safety products
The machine is safe because it has Light Curtains
Safety and High productivity are mutually exclusive
We standardize on CAT 3, PLd safety circuits
Standard PLC's are okay to use as a safety controller
Machine Safety Misconceptions
- Well tried and incorporates safety principles
Duality, Diversity, Diagnostics
Direct Drive Contacts
Mechanically Linked
Tamper Resistance
- Recognized by safety standards
ISO 13849 (PL) – MTTFd
ISO 62061 (SIL) – PFHd
- Third Party Certified: TÜV, BIA
What Makes a Product Safe
Safety Inputs - Safety Logic/Controllers - Safety Outputs - Safety Networks

Machine Safety Technologies
Protective measures implemented by the designer
Step 1: Inherently safe design measures
Step 2: Safeguarding and complementary protective measures
Step 3: Information for use
At the machine – warning signs, signals, & devices
In the instruction handbook
Protective measure implemented by the user
- Organization: safety working procedures, supervision
- Provision and use of additional safeguards
- Use of Personal Protective Equipment (PPE)
- Training, etc.
US Machinery Standards
ISO Machinery Standards
Matt Taylor
TÜV Certified FS Engineer - Machinery
Rockwell Automation

Machine Safety
3. Design & Verification
2. Functional
Requirements
4. Installation
& Validation
1. Risk or Hazard
Assessment
5. Maintain
& Improve
Safety Standards Guidance
Safety Lifecycle / Strategy
Risk Assessment Process
Hazard Identification
Machine Limits /
Characteristics
Risk Estimation
Risk Evaluation
Risk Reduction
Use Limits
Space Limits
Time Limits
Other Limits
Hazardous Events during all phases of the machine life cycle
Human Interaction (Task Identification)
Reasonably Foreseeable Misuse
Risk - The combination of the probability of occurrence of harm and the severity of that harm
Risk Toleraable
Risk
too
high
Risk
Okay
Documentation
Safety Solutions
?
Questions?
1. 1926.501 – Fall Protection 6,721
2. 1910.1200 – Hazard Communication 5,192
3. 1926.451 – Scaffolding 4,295
4. 1910.134 – Respiratory Protection 3,305
5. 1910.147 – Lockout/Tagout 3,002
6. 1910.178 – Powered Industrial Trucks

2,760
7. 1926.1053 – Ladders 2,489

8. 1910.305 – Electrical, Wiring Methods 2,404
9. 1910.212 – Machine Guarding 2,295
10. 1910.303 – Electrical, General Requirements 1,973
Top 10 OSHA Violations for 2015
Keeping People Safe Around Machinery
Keeping People Safe Around Machinery
Energy Isolation vs. Machine Guarding
Minor servicing MUST be Routine, Repetitive and Integral to the operation of the system
If Machine Access is Required, TWO Choices:
Full transcript