3 ms·
Clean room equipment is kind of the opposite of what was needed. Clean room equipment protects the room from the people. What’s was needed was likely pretty b
by amluto 25d ago
Clean room equipment is kind of the opposite of what was needed. Clean room equipment protects the room from the people.
What’s was needed was likely pretty basic PPE: P100 respirators along with outer clothing that would be kept out of people’s homes and showers when leaving the site. (PAPRs would have been even better, but they wouldn’t have been cheap or available in large numbers on short notice.) Unfortunately, if you watch modern construction workers, you’ll find that PPE is almost universally ignored when performing common but dangerous tasks like cutting concrete or lead-painted surfaces.
- pvab3 25d agoI've been well served by just using a P100 respirator when I'm doing anything dirty or dusty. There have been a few times that it's reduced exposure to something bad that I didn't know about, among them removing old shingles from my attic (asbestos composite material) or sanding paint that I had tested negative for lead (transparent varnish underneath had lead).
- amluto 25d ago> transparent varnish underneath had lead Weird. Wasn’t lead typically used as an opacifying agent? In any case, if you test by taking a little scraping, you can only detect lead that you actually scraped. But if you test with X-ray fluorescence, you get an integrated density over a decent thickness. Also, even if the P100 respirator protects you adequately while sanding, it provides no protection against future exposure to the dust that you create.
- gucci-on-fleek 25d ago> Weird. Wasn’t lead typically used as an opacifying agent? That's its role in paint, but lead glass [0] is a thing, so transparent lead-based compounds do exist. [0]: https://en.wikipedia.org/wiki/Lead_glass https://en.wikipedia.org/wiki/Lead_glass
- pvab3 25d agothere was a layer in between. I had it XRF'd after I started. And I always cleanup with a full HEPA vacuum anyways.