Wood Dust OSHA standard [Archive] - Sawmill Creek Woodworking Community

lou Brava

11-13-2023, 12:20 PM

Hobby WW here & wondering if there is something published besides the wearing a filter & testing to see if your taking in too much dust per OSHA regulations. The OSHA web site states that "excessive" amounts of dust are a problem. I'm wondering besides actual filter/lab testing is there a any simple guideline as to what is "excessive" amounts. As in hearing protection OSHA lists so many decibels per a time limit for exposure and there are lists of tools/engines of how many DB's there putting out, you can get an App to measure & nine times out of ten your ears will tell you immediately if you need hearing protection.
I'll work on a project for a few weeks than maybe a month or 2 later start another, never more than 6 hs a day in the shop.. I have a POS wall mounted dust collector with a 1 micron bag which works OK with Jointer, planer & TS, but small tools sander,router,ect, DC is not so great, when dust is looking bad I'll wear an N95 until I'm finished with the task.
I'm thinking of upgrading my DC system to a Jet 1100 cfm & canister filter but that's about as far as I think I need take it.
Thanks

Mark Hennebury

11-13-2023, 12:59 PM

This is getting close to "too much dust" less than this you don't need to worry.

https://www.youtube.com/watch?v=LURyMXQRDxs

Jim Becker

11-13-2023, 4:22 PM

I'm thinking of upgrading my DC system to a Jet 1100 cfm & canister filter but that's about as far as I think I need take it.

Keep in mind that it's not really capable of pulling 1100 CFM at normal static pressures for in the shop. A 4" hose can't pass more than about 450 CFM and a 6" hose caps out at about 800 CFM...under ideal conditions. Having duct work adds to the fun and games.

I'm not familiar with how to access OSHA information, but wearing PPI and, perhaps also using an air cleaner filter, isn't a bad idea since the DC is great as a chip collector but not necessarily going to capture all the fines that are dangerous, even with "the best" collector in the shop.

Patty Hann

11-13-2023, 5:48 PM

This is getting close to "too much dust" less than this you don't need to worry.

https://www.youtube.com/watch?v=LURyMXQRDxs

I bet anyone working there will have COPD by the time he's 50

Mark Wedel

11-13-2023, 6:01 PM

One thought is to get a monitoring device which shows the current PPM count in the workspace, so you know how much dust (or not) you have. Some tools which may not seem like big dust producers may be making unexpected amounts. It also lets you know how much dust is lingering in the air after you are finished (if for example, the space is used for something else like a garage where you may be doing activities in that space not related to woodworking)
I know there are recommendations based on PM2.5 - less than 50 PPM is considered fine, 50-100 unhealthy for sensitive groups. This is usually related to wildfire smoke (at least where I live). There is a time factor, as well as activity (exercise will result in you breathing more of it in).
For myself, I still use my monitoring device only as a guideline, since it may located many feet from where I'm actively doing something. My workshop also is my garage, and when doing woodworking, I try to keep the garage door open to get fresh air, but this is more doable for me here in California than it may be for many others.

Mark Hennebury

11-13-2023, 6:30 PM

Well he could wear a disposable dust mask and then maybe he wouldn't have COPD until he was 100, and you could extrapolate that to a hobbyist with a disposable dust mask making to 1000.

There is a lot of unfounded fear about dust. especially within the hobbyist community. Millions of people all around the world work in dusty environment's, if half of what you hear about the evils of dust were true, people wouldn't last a month in their workshops, their lungs would clog up and they would die! Chill out.

Wear a disposable dust mask, ear plugs, and safety glasses, if you have a dust collector hooked up to your jointer and thicknessplaner your golden!

I bet anyone working there will have COPD by the time he's 50

mike stenson

11-13-2023, 6:33 PM

I'm kind of glad to actually have the luxury of dealing with health and safety laws at work.

Mostly because I've been to places that don't.

glenn bradley

11-13-2023, 10:19 PM

Good demonstrations here of feeling that your own experiences are correct for all. We're all different. Some folks are also comfortable not using guards on their machines :D. Early on I wore a mask and had a bagger style collector. I am now on medication for the rest of my life, have two ambient cleaners, and a much more powerful cyclone separator that exhausts outside of the work area. I can't say that if I had done more sooner I would be in better shape but . . . at least I can still do woodworking with the appropriate safety measures for my situation. I do run a Dylos to stay informed of the environment.

Scott Winners

11-14-2023, 1:13 AM

https://www.osha.gov/wood-dust

Larry Frank

11-14-2023, 7:17 AM

Alan Lightstone

11-14-2023, 8:03 AM

Lots of governmental gobbledygook, but I think the standard is 5mg/m3 respirable fraction and 15mg/m3 total dust, but I'm no chemist or bureaucrat. It seems to be hidden way in the multiple documents.
510402

It's characterized as "Particulates Not Otherwise Regulated, Total and Respirable Dust (PNOR). Only our government could take a simple term like wood dust and turn it into that incomprehensible phrase. :rolleyes:

Bill Howatt

11-14-2023, 10:01 AM

It goes back to, "everybody's different". Just because Joe Blow didn't develop a problem after 40 years of some activity doesn't mean you won't. We all know, and cherish, the stories about the 90+ year old person who smoked and drank a lot during his/her life. OTOH, there are those that didn't make it to 50.

The very fine dust, that is hard to totally capture with a DC or air filters unless you have a real good HEPA system or wear a good respirator, is what gets into your nose and lungs and causes problems.

Wood is a Group 1 carcinogenic and is known to increase the incidents of sinus and nasal cancers among others. This risk appears to be wood type related with aspen being no problem and oak a more serious risk. For those who love sniffing fireplace/campfire smoke, it's nasty too because it contains small particles.

There more exposure you have, either dues to dust density in the air and/or time exposed, increases the risk. I'm in my 70s so I am not overly concerned at this stage in my life but if I was a much younger WWer, I'd be paying a lot more attention to the risks since there is a lot of time for bad things to develop. Like my cancer (unrelated to WWing) doctor said something, perhaps a long time ago, flipped some DNA and now it is showing up.

lou Brava

11-14-2023, 11:45 AM

On occasion, I will check the dust levels in my shop using this PM Detector. It is available on Amazon for about $42 and also on eBay. I will hang it at about head height near whatever tool I am using.

510401

This looks like a good way go, spend the 40 bucks & see whats really going on in the air & compare it to the OSHA particulate standards for whatever that would be worth. As It seems there is nothing published for "allowable exposure to excessive dust. In other words the OSHA standard for hearing is an allowable time limit to excessive noise. I know OSHA is 100% for employee protection so there looking at shop environments where employees are there 8hrs a day which is an entirely different ball game than my "shop". I also realize dust is harmful & in a perfect world a dust free shop would be great. If I was doing WW even 2-3 days a week 6-8 hrs a day I would invest the money & time & try to get there. For now I'll try the PM detector using my current set up & see what I'm really breathing & take it from there.
Thanks for all the replies & info,

Michael Burnside

11-14-2023, 12:28 PM

jerry pepper

11-14-2023, 12:47 PM

having a dysos particle counter in my shop has been revelatory

Mark Wedel

11-14-2023, 2:03 PM

I have that same, or very similar meter in my garage workshop.
I mostly care about delta from baseline. Normally, the PM 2.5 reading will be <5. If I see it rise significantly above that, I know I have a bunch of dust floating in the air and should really be wearing a respirator. Unless you live in a clean room, there is always going to be some stuff floating in the air - I just care about how much worse the woodworking is making it.
Granted, some folks might live in places that just have a really high baseline (if mild wildfire smoke blows in, 50+ on PM 2.5 would be seen.) 5 years ago when there were major wildfires and smoke blew this directions, 400+ on PM2.5 was seen, but in that case, the smoke was visibly bad - just looking across the street, one could see the haze from the smoke. Needless to say on those days, I just didn't go outside or do work in the shop (while I respirator would help the lungs, that much particulate irritates the eyes)

Chris Parks

11-14-2023, 5:50 PM

Well he could wear a disposable dust mask and then maybe he wouldn't have COPD until he was 100, and you could extrapolate that to a hobbyist with a disposable dust mask making to 1000.

There is a lot of unfounded fear about dust. especially within the hobbyist community. Millions of people all around the world work in dusty environment's, if half of what you hear about the evils of dust were true, people wouldn't last a month in their workshops, their lungs would clog up and they would die! Chill out.

Wear a disposable dust mask, ear plugs, and safety glasses, if you have a dust collector hooked up to your jointer and thicknessplaner your golden!

Mark, keep up the good work and don't let anyone tell you any differently.

Larry Frank

11-14-2023, 7:47 PM

I monitor all the data and enter in a spreadsheet. But, I am mostly interested in the smaller particles. Occasionally, I will do a test using a tool with and without the dust collector on and notice that running my dust collector makes a significant difference in the smaller particles PM 2.5 and smaller. Does my dust collector get everything...absolutely not but it does reduce the dust. I am running a 5 hp cyclone which moves a lot of air. I also have a Jet air filter which does a good job with smaller dust.

Why do I do all of this? Is it because the dust could kill me? Not at all ! It helps me with breathing and sinus issues. It makes me feel better physically.

Mark Wedel

11-15-2023, 12:17 AM

Not directly comparable, but I did read an article recently about how counter fabricators in Southern California are getting silicosis, and that some, even in the 20s, are at the point of needing oxygen tanks. But these are people working inside shops with poor dust control and thus inhaling dust (and probably a lot of it) for 40 hours/week. I suspect most home workshops are not going to come close to that level of dustiness.
However (what is related) is that not everyone in those shops is getting silicosis - there are different factors - some are probably genetic. Maybe some are working by the air vents so are getting fresher air - who knows. Main point being that you can't really make blanket statements that you should (or should not) worry about dust - I'd rather protect myself as it is rather easy to do, but for many years I really didn't do good job, and blowing my nose at the end of the day showed it.

Chris Parks

11-15-2023, 12:49 AM

Stone counter tops are just about to be banned and withdrawn from sale in Oz due to Silicosis, as much as I am in favour of dust control I don't see a problem if proper measures are taken but unfortunately that is not the case and workers ignore guidelines at their own peril as they have unfortunately found out and most probably a shortened life span and a lot of suffering. I bet the clever people try to fabricate offshore and import it so someone else can deal with the problem.