The EPA decided its scientists were overstating the risks and gave Chevron the go-ahead to make the new boat fuel ingredient at its refinery in Pascagoula, Mississippi.
Poor Mississippi.
The EPA decided its scientists were overstating the risks and gave Chevron the go-ahead to make the new boat fuel ingredient at its refinery in Pascagoula, Mississippi.
Poor Mississippi.
So I wanted to provide a bit of unique perspective here on the topic. I now work as a process engineer in a steel mill, but 2 of my previous positions were in product safety and regulatory compliance. I worked in US, CA, & MX regulatory law, as well as global compliance with countries outside of the Americas. In my position I had to deal with regulatory compliance with chemical lists (TSCA, ECHA, DSL/NDSL, ISHL, etc.) and I was responsible for creating and verifying the information we use to create our SDS sheets.
So a large part of people are stuck on the fact that there is a lot of redacted information in the paper, this could be for multiple reasons outside of protecting trade secrets. As I stated above, there are regulatory chemical lists. In many countries, it is entirely ILLEGAL to sell or use in manufacturing, any chemicals which do not appear on the list for the country in question. When a company wants to create a new chemical (which is happening all the time, this also can be a “mix” and not a defined exact molecule, ill speak more on this later) its is a very slow and long process of classifying the chemical, getting a CAS number assigned, and then getting this chemical listed on the regulatory lists of the locations you intend to use it/sell it. To get listed on these lists is a process in itself that includes providing absolutely as much information on the chemical as reasonably achievable. From my experience, ECHA (EU) has stricter rules than TSCA (U.S) for example, and not all lists are made equal, governed equally, or even list the same chemicals. So circling back, the feedstock listed in the paper is likely very early in this process or is in the middle of the process, meaning there is not an “official” name or means of identifying what is being spoken about, anything referred to in the paper would just be internal monikers/code names or possibly a nickname to describe it.
On the topic I said I would speak more about, “mixes” or “chemicals” without a defined chemistry. So there are feedstocks/chemicals/mixes of oils/paraffin materials/alkanes/etc. that are very hard to control the creation of, so they are created as an inseparable bulk mixture. Some Examples:
-Cas #: 85535-86-0 [C18-28 Chloroalkanes (20-50 %Cl)]
-Cas #: 97553-43-0 [Paraffins (petroleum), normal C > 10, chloro]
The “mixtures” are classified based on their properties and what is actually making up that mix defined within the certain Cas #. This is likely how all of the feedstocks in the paper would be classified. Based on certain plastics that are recycled you could expect X, Y, Z, defined blends.
Finally, regarding the safety aspect. Having been thrown into the world of chemical regulation (I am a chemical engineer by education, we covered the existence of TSCA in like one section of our safety course), I got to see first hand how almost “fly by the seat of your pants” it is. I cannot suggest a “better” way to more safely regulate these chemicals, other than to take an outright strict approach (which I am in favor of btw). Eu for example is much stricter (both health and environmental hazard wise) compared to the U.S. They have a higher burden of proof that the chemical is not harmful and an approach of “okay if it shows signs it could be a problem, classify it as such”, while it sure feels like the EPA takes the approach of “okay, lets see if you guys can keep this from becoming a problem.” Which companies have proved repeatedly, they cannot.
Are you familiar with the hexavalent chromium changes a few years ago? Those of us in aircraft were exposed to it daily in paints with no PPE then they’re all “oops. We’re cutting exposure limits by 100”. And, of course, aircraft mechanics refuse to follow controls because we’ve done it this way for decades. It’s the only thing that has the corrosion resistance properties needed for aircraft, so here we are.
Yeah, very sadly the chemical industry (and then by extension, manufacturing/maintenance as a whole) is rife with this shit. I hope and pray that young and aspiring chemists/chemical engineers/regulators/safety engineers/etc. will make changes in time that we take harder approaches to shit like this. We put the environment and people first, the “progress” of industry in a close second.
Regarding what you said about the old guys doing it how they used to. I see that all the time in my steel mill. Lots of older guys (and some younger ones who put off the too cool for school vibe) dont wear earplugs all the time. They havent for the last 20 years, so what is me telling them they will lose their hearing gonna do? They have done it this way, and will continue to do it this way. Luckily, we have had success in general improving our safety culture, but getting people to care about the unseen threats (particulate matter, hearing loss, exposure, etc.) can be very hard
The chemical stuff is tough. I mean, viscerally, you’ve got smells that at least tell our brain to avoid it sometimes, but mostly the threat isn’t immediate enough to make an impact. Solvents dry out your skin at which helps for some. It’s just hard to make someone think that walking to a tool crib or supply cabinet is worth it over ten seconds of exposure. I’m that way with solvents (IPA and MPK).
It’s getting better slowly. I get it for some things, though. If you’ve been running a manual mill for 30 years, a little piece of plexiglass isn’t going to make you any safer and we waste effort on dumb shit like that too often. It makes it harder to get people to do some of the other things. Coming into the industry when I did helped. Watching a bunch of guys retire broken or die working has an impact.
As much as I hate heavy-handed policies, having large areas that are hearing protection required seems to work alright. There’s no question about the sound level of a certain task or any room to argue. I managed to shake hands with my boss, his boss, then our director with a pair of ear plugs for each within a span of about 30m once. They didn’t think it was as funny as I did. The look on their face when they saw what I put in their hand was priceless, though.