anti-tie down code
- Thread starter remonk
- Start date
- Status
richwaskowitz
Senior Member
- Location
- Shelby Twp. MI, near Detroit
Re: anti-tie down code
That question cannot be answered without a bit more information. It depends upon the type of machine you are dealing with. You will have different requirements for instance in protecting someone from a 50 ton press as opposed to something a little less threatening like a conveyor. First a risk assesment will have to be made to determine the level of risk. That will lead you into what level of control reliabiliy is required. It is not a simple matter of relays versus PLC.
A very good source of info on this subject is available in a catalog put out by Allen-Bradley called "Safety Products" publication S115-CA001A-EN-P available free for the asking.
Also, you could contact Patricia Yoblin of Progressive Automation Controls in New Berlin Wisconsin at 1-800-803-0444 adn ask for her help. She and here company have been very helpful to me in the past with questions about ANSI, OSHA and NFPA 79 requirements.
References you may want to ask for would include:
OSHA 3067 - List of ANSI Safety Standards
OSHA 1910 - Guarding
OSHA 1910.211 - Definitions
OSHA 1910-212 General Requirements fo all machines
OSHA 1910.217 Control Reliability
NFPA 79 - Standards for Industrial Machinery
ANSI/RIA R15.06 - Risk Assesment
That question cannot be answered without a bit more information. It depends upon the type of machine you are dealing with. You will have different requirements for instance in protecting someone from a 50 ton press as opposed to something a little less threatening like a conveyor. First a risk assesment will have to be made to determine the level of risk. That will lead you into what level of control reliabiliy is required. It is not a simple matter of relays versus PLC.
A very good source of info on this subject is available in a catalog put out by Allen-Bradley called "Safety Products" publication S115-CA001A-EN-P available free for the asking.
Also, you could contact Patricia Yoblin of Progressive Automation Controls in New Berlin Wisconsin at 1-800-803-0444 adn ask for her help. She and here company have been very helpful to me in the past with questions about ANSI, OSHA and NFPA 79 requirements.
References you may want to ask for would include:
OSHA 3067 - List of ANSI Safety Standards
OSHA 1910 - Guarding
OSHA 1910.211 - Definitions
OSHA 1910-212 General Requirements fo all machines
OSHA 1910.217 Control Reliability
NFPA 79 - Standards for Industrial Machinery
ANSI/RIA R15.06 - Risk Assesment
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
Re: anti-tie down code
While there are some exceptions, you generally cannot use a standard PLC for any safety function. You can use special safety rated PLCs for these functions.
Having said that, a lot of what people refer to as "safety" functions are really not safety issues as OSHA defines them, but are really interlocks to protect the equipment from damage, rather than saftey features to protect people from injury.
You need to do a proper analysis first.
While there are some exceptions, you generally cannot use a standard PLC for any safety function. You can use special safety rated PLCs for these functions.
Having said that, a lot of what people refer to as "safety" functions are really not safety issues as OSHA defines them, but are really interlocks to protect the equipment from damage, rather than saftey features to protect people from injury.
You need to do a proper analysis first.
- Status