E-Stop on machinery
E-Stop on machinery
(OP)
My company is selling our technology to another company. We are working with their engineering firm with us acting as 'consultants' on the design, etc.
We have in our plant, and are recommending to them, E-stops placed around each series of equipment for the operators to shut down the equipment and line.
The basic equipment setup is feeders (raw material) to extruders, extruder, cool product, cut product and package product.
Engineering firm is not installing the E-stops saying:
1) Each of the above equipment is designed by the vendor providing the equipment and has the necessary controls in their package to control that equipment.
2) HAZOP (PHA) did not identify the need for E-stops, so they are not necessary.
We feel it is protection to not just the equipment, but to personnel in the area. We do not know why it didn't show up in the PHA.
Any guidance on the necessity of hardwired E-Stops would be appreciated.
We have in our plant, and are recommending to them, E-stops placed around each series of equipment for the operators to shut down the equipment and line.
The basic equipment setup is feeders (raw material) to extruders, extruder, cool product, cut product and package product.
Engineering firm is not installing the E-stops saying:
1) Each of the above equipment is designed by the vendor providing the equipment and has the necessary controls in their package to control that equipment.
2) HAZOP (PHA) did not identify the need for E-stops, so they are not necessary.
We feel it is protection to not just the equipment, but to personnel in the area. We do not know why it didn't show up in the PHA.
Any guidance on the necessity of hardwired E-Stops would be appreciated.
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RE: E-Stop on machinery
Download from OSHA:
http://w
Safeguarding Equipment and Protecting Employees from Amputations
- Emergency Stop Devices
RE: E-Stop on machinery
RE: E-Stop on machinery
Enforcement in the states is rare until after an accident or even until a fatality accident. Upon an industrial fatality OSHA climbs all over the place and issues hundreds of citations - but only after the accident. The engineering firm could be long gone by that time.
RE: E-Stop on machinery
If you're in the EU you may want to look at EN 954, and its replacement EN 13849-1. The latter uses techniques developed in EN 61508 and EN 61511 (which address process safety) to determine the requirements to achieve acceptable levels of personnel safety.
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If we learn from our mistakes I'm getting a great education!
RE: E-Stop on machinery
An E-Stop could prevent machine damage that an observer could prevent.
Weeks of production can be lost if an injury occurs.
E-Stops are cheap insurance.
Keith Cress
kcress - http://www.flaminsystems.com
RE: E-Stop on machinery
1) This machine is eating itself. How far away do you think an E-Stop should be?
2) This machine is eating *you*. How far away do you think an E-stop should be?
Ed