An ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis, operating efficiencies and cost savings, as well as all relevant safety standards, such as those from NFPA, ANSI, RIA, IEC, ISO and OSHA. About J.B. Titus.
Machine safety: DANGER: Machine without brain requires yours!
September 24, 2012
Who really has the brain, the machine or the person? Whether it’s the operator, maintenance technician, set-up technician, engineer, or clean-up staff – YOUR brain has capabilities that surpass any brain on the machine. Have you ever seen injuries on a machine that didn’t need to happen? Could they have been avoided? Did those involved simply make a mistake? Where were their brains?
Machines often have brains, either wired or solid-state intelligence. But can they listen? Can they anticipate a human injury? Do they know when an operator will take a chance? So what are we doing with machine guarding? Protecting someone from making a mistake in judgment?
The Department of Defense many years ago developed a standard, MIL-STD 882D, wherein they defined a term “mishap” as: “An unplanned event or series of events resulting in death, injury, occupational illness, damage to or loss of equipment or property, or damage to the environment.” Yet this seems to be directed (for personnel) at injuries inflicted on people that should be fully cognizant of every moment and ready to protectively respond to anything in a nanosecond?
Is that how the majority of machine related injuries occur? I think not! It’s been my experience that most machinery related injuries occur when personnel make a misjudgment or are temporarily disconnected from their brains. So, isn’t a majority of machine guarding required to protect personnel from themselves?
What has your experience been? In today’s level of machine safety planning and implementation, are we:
1. Protecting the machine from the person?
2. Protecting the person from the machine?
3. Or, both?
4. Or, neither?
Your comments or suggestion are always welcome so please let us know your thoughts. Submit your ideas, experiences, and challenges on this subject in the comments section below. Click on the following text if you don't see a comments box, then scroll down: Machine safety: DANGER: Machine without brain requires yours!
Contact: www.jbtitus.com for “Solutions for Machine Safety”.
For more than 30 years, J.B. Titus has advised a wide range of clients on machine functional safety solutions, including Johnson + Johnson, Siemens, General Motors, Disney, Rockwell Automation, Bridgestone Firestone, and Samsung Heavy Industries. He holds a Bachelor of Business Administration degree from Oklahoma University in industrial management and an MBA from Case Western Reserve University in marketing and finance. He is a professional member of the American Society of Safety Engineers and is OSHA-certified in machine guarding. Titus is also TUV-certified as a Functional Safety Expert and serves on several American National Standards Institute, National Fire Protection Association, and National Electrical Manufacturers Association national safety and health standards committees. Reach him at jb(at)jbtitus.com and via www.jbtitus.com.
Wednesday, 17-10-12 02:49
Good morning - Here two example out of real life:
Transformer shut down, four times secured by
– 2 locks
– German safety sign
– advice in the documentation
Current is shut down, not the voltage →Transformer has learned to fly, luckily no humans were harmed.
Performer was an experienced electrical engineer
Piping system was welded and checked in the factory
6 months after start of production a pipe leaked
After 2 hours the pipe exploded and damaged the surroundings, luckily no humans were harmed. A walk down procedure was defined, so the leak should be recognizable.