I appreciate people taking the tie to respond, although I never got the answers that I am needing. Yes, all plant locations have their hazards and we try to train our employees to be diligent in all situations. Yes, we ask our employees to go through a Hazard Analysis checklist whenever they...
I wish that it was that easy. The large facilities that our people visit have the safety orientation videos. It is the small facilities that are what I am worried about. Also, what could be a recognized hazard to people in a specific industry may not be of concern to others.
As an engineer who has been out of school for 35+ years, I have learned that certain processes have their own inherent dangers, e.g. A Refinery can have H2S exposure, Chemical Plants can have steam vacuum jets that cause corrosives to rain down on cold days, etc. Our Company sends engineers to...
OSHA is a performance oriented government agency in the US. They have several standards of how to do certain things but they never endorse specific equipment for use, to be in compliance.
Before you say that the blind is bolted all around, calculate the forces on a 20" diameter piece of metal with 1000 psig pushing on it. When you go to remove it, it may look like a soup bowl and you will not be able to remove it from the flange. Most large blanks at high pressure will need a...
It sounds like you will need to shutdown the source of material upstream to work on the valve. I am sure that there must be a valve somewhere upstream, that could be closed off. The problem with a line blind is the thickness of what would be required at those pressures.
The definition of a confined space has three items listed: An enclosure not normally designed for human occupancy, with known or potential hazards and a limited means for entry or exit, which may restrict egress so that a person would have difficulty in escaping from such a space in an...
Some facilities, based on their written procedures use the same posted form for multiple consecutive shifts/days. You still need to do all the prescribed safety checks on a regular basis and have it reflected on the permit. It just saves on having to fill out a new form for each day/shift...
You can use "Tagout" instead, but it needs to be demonstrated to be as effective as "lockout". I am not sure if that is what you meant by your question. The LOTO standard is required whenever someone can put themselves in harms way. OSHA requires LOTO unless the employee is protected by a...
During the reaction phase, the system operates at a relatively low pressure. In the event of a malfunction (runaway reaction) the sooner you can dump the reactants the less likely that you will have an excursion that will lead to a vessel overpressure. If you wait until the pressure is near...
Using a "dump valve" is an option, the problem is that during the non-reactive phase the pressure goes higher than the pressure that I would want to dump at during the reactive phase. A safety system would not have a way of knowing what phase the reactor is in, any suggestions?
Anyone have any thoughts on the appropriate relief of a reactor that has two phases of operation. Phase 1 (Mixing) , small rupture disk at a high pressure (below rating of vessel). Phase 2 (Reaction) is where I need to relieve the reactor at a lower pressure to keep the size of the rupture...
The best option is to replace the local pressure gauge with a pressure transmitter that comes with a local readout. Most industrial units are rated for Class 1 Division 2 areas where you do not expect to have a flammable atmosphere but the unit will contain any ignition. You can spend more and...
I appreciate everyones responses. I now know more about Methane Hydrate than I ever thought I would. The link to the feesa site was very helpful. Thanks!
