【JST-003】One-on-one consultation office for chemical safety experts
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This post was last edited by Firefly on 2015-4-10 08:58. Technical discussant: Hou Xiaodi; Major: Chemical Engineering. My areas of expertise include safety management and safety assessment. Daily/weekly online time: Monday to Friday, from 8:30 a.m. to 5:00 p.m. Work experience: six years in safety assessment, four years in safety management. (This post is intended for those seeking help to have one-on-one discussions on this topic; other users are not allowed to discuss it here. If you have different opinions, please create a new thread in the appropriate discussion area. Thank you for your cooperation.) I’m quite busy with work and cannot guarantee to be online at all times to participate in discussions; please understand. But I promise to reply to every message.
This post was last edited by Hou Xiaodi on 2012-3-29 at 19:32: http://bbs.hcbbs.com/thread-347728-1-1.html. Fortunately, I had already posted the teaching materials that netizens were looking for. Comprehensive Analysis of Typical Cases of Work Safety Accidents http://bbs.hcbbs.com/thread-200464-1-1.html Safety Assessment, 3rd Edition (Volume 1 and 2) http://bbs.hcbbs.com/thread-180272-1-1.html The Law on Work Safety, Work Safety Assessment, and Practical Guidelines for Handling Major Accidents http://bbs.hcbbs.com/thread-168673-1-1.html Original materials on the promotion of safety standardization by Hou Xiaodi http://bbs.hcbbs.com/thread-810058-1-1.html These are the only things I can offer; they’re from a few years ago as well. I really don’t have anything else. Let me make it clear — I simply like to discuss issues in order to raise awareness on certain aspects of security among both parties. But I really don’t want to ask for information, and I don’t have much of it either. There is a lot of information on the forum; those who need it can use the search function.
If there can be no windows, then there certainly can be no doors either – how can that person come in and out? -_-/// Actually, this issue should be considered from the following aspects: whether a lounge can be set up and where it should be located. If we consider the issues in 50058, there arises the question of how to design the windows.
In batch vacuum distillation, residual liquid remains in the reactor at the end. If air is introduced to break the vacuum after distillation is completed, could an explosion occur? What are some reasonable solutions?
We can break the vacuum using an inert gas. Using air can cause an explosion; nowadays, companies generally use N2. Only small rural workshops use air to create a vacuum.
Yes, small businesses are indeed at risk, but installing a nitrogen generator for them is also no small matter. Are there any other alternatives? I seek advice.
The requirements for breaking the vacuum with an inert gas aren’t very high, right? I don’t have any other good options either. It is dangerous to break the vacuum after distillation is complete. Be extremely careful.
Check the building codes; there are requirements regarding rest rooms here. For example, where it can be set up and where it cannot. I don’t know what relation there is between whether windows are installed or not and safety. I don’t think it’s safe to have no windows – there’s a risk of explosions, and rest areas aren’t allowed in places where toxic substances are used. It is recommended to take another look at the building codes.
This post was last edited by ckwcba on 2012-3-31 at 17:30. I would like to ask Brother Monkey: where does the rule stating that rest rooms cannot be installed in areas where highly toxic chemicals are used come from? Someone mentioned earlier that restrooms shouldn’t have windows, and their doors should be explosion-proof doors; however, building codes do not require this. Building codes only require that when a lounge is built adjacent to Class A and B factories, it be separated by an explosion-proof wall and equipped with a separate safety exit. It is not required that the doors of emergency exits be explosion-proof doors. Exports can be configured, and of course windows can also be set up. An explosion-proof wall is required for the area separated from the production zone; such a requirement does not apply to the other parts of the lounge.
Yes, that’s why I object to the idea that windows shouldn’t be installed. It seems that rest rooms are not provided in places where highly toxic chemicals are used, as per some older regulations regarding safety and hygiene; I can’t remember the details exactly. It’s a requirement related to hygiene.
What is the concept of a lounge? Do we still need to rest at noon? Even temporary operation rooms aren’t allowed in explosion-proof areas – how can you expect to rest? If a room is used as a lounge, there are certainly requirements regarding fire and explosion prevention. It’s okay to have windows; our operation rooms on site all have doors and windows. However, any part that contains glass needs to be protected, for example by applying a film to prevent accidents. Moreover, the orientation of doors and windows also matters. I’m not sure which regulations dictate this, but I’ve noticed that the doors and windows are always positioned so as to face away from or to the side of the production equipment.