Disposal criteria for gas filter canisters
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This post was last edited by fangqiong on 2011-9-23 12:15. The workshop wants to establish standard criteria for discarding gas filtration canisters: 1. Time of use – the problem is that the canister lasts a shorter time when used in high-concentration environments and a longer time in low-concentration environments; it’s difficult to determine the appropriate concentration levels； 2. Is there any odor? (Some gases are odorless; that’s too rational.) ； 3. Weighing ； I think weighing is the most scientific approach; filter canisters come with their original weight, and they are considered unusable once their weight increases by a certain amount. I’ve heard that this amount is 15G, but I haven’t seen any relevant standards. I was wondering if anyone knows such standards, and it would be great if they could indicate which one it is.
I hope someone knowledgeable can answer this; I’d like to know if there are any specific standards for it. .
There are instructions for use on the gas filter canister; these instructions outline the conditions under which it becomes invalid, one of which is when the weight exceeds 15g, and it should be weighed before each use； There is also a specification stating a validity period of 5 years, and it should be discarded if an unusual odor is detected during use. . .
We all base it on what the manufacturer provides
3M’s gas masks come with calculation software, which is determined based on factors such as the duration of use in the field and the concentration of harmful gases.
Reply to 5# xlazxs: I’ve seen the relevant standards; they’re too complex and not practical
To measure practical applications against standards is nothing but an indication of unhumanistic management; it is recommended to replace them regularly, and those that have been used in emergency situations should be replaced immediately. Such is the standard of management for items that are related to human life.
Reply to 7# zccchunchen: I support humanized management, but humanized management does not mean waste; we can allocate money to more meaningful areas rather than wasting it.
Everything has been explained upstairs. If a standard must be applied, it’s not suitable as it’s too complicated. If you really insist on adhering to certain standards, please refer to the relevant standards
Reply to 9# zccchunchen: I’m sorry; maybe I am too picky. I also looked for relevant standards (such as GB2890-2009 _ Respiratory Protection _ Self-priming filtering gas masks), but I couldn’t find what I was looking for; I just want to get an answer that satisfies me.
Reply to 1# zengwenlfo: There were previous discussions regarding the disposal of gas filtration canisters. The manufacturer’s answer was three points: 1. Those that have passed their expiration date certainly cannot be used； 2. Units that have been opened for more than 15 days during their usage period must be compulsorily scrapped ； 3. If it is opened within 15 days of the start of its usage period but has an abnormal odor, it must be scrapped ； Or, if the concentration of harmful gases in the operating environment is known, equipment used in that environment for more than the specified time must be scrapped. As for the weighing method mentioned by the original poster, I think it is neither scientific nor convenient. The reason is that the substances absorbed by the gas filter can vary, which leads to different weight increases; moreover, weighing such gas filters requires quite precise measuring instruments (with accuracy at the milligram level or higher), and these instruments must be carried around...