EHS application in SEVT work (Testing (Wind tunnel, Roads, Practice…
EHS application in SEVT work
ergonomics and posture as we work --- I think this matters, but if we have to pick focus areas... this would not be it... there are other areas that need more attention
Important! The behaviors we model for new team members matters
Setting expectations: This is the best time to teach new team members good practices (self-care, care for others, as well as care for the shop). Simple things like wearing safety glasses (cleaning them if they are gunky or getting new ones from the shop stash). Putting hair up. Keeping the tools and the areas surrounding the tools clean (the kind of clean that sets the bar hight and shows that this space is ours and we know how to take care of it)
shop up keep
tools up keep
cutting stock (metal)
Wear a disposable N95 face mask
Cutting metal (welding and soldering) generates heat and metal fragments (or a metal particle distribution -think gaussian curve). I.e. the white smoke and smell of metal when we cut stock, solder, or weld. The large metal fragments settle as dust around shop. The small metal fragments become breathable. The larger of the breathable particles get caught in mucous and gets tossed out via snot... the really tiny bits generated by metal cutting can go set in the smaller bronchioles, or the alveolar region of the lungs where O2/CO2 gas exchange happens. We did not evolve to have a good defense mechanism to remove solids from that region (because back in the early humanoid days the only thing that small and abundant enough to cause disease were biologicals). Alveolar macrophages are the only thing hanging in the deepest region of our lungs to defend us again foreign matter, and they only successfully breakdown biological agents not fibers / not metal solids. That is why asbestosis is a thing: macrophages try to fight off non biologicals and die. As dead macrophages accumulate and tissue swells and ruptures due to irritants, and the tissue then heals, scar tissue forms in our lungs and this firm scar tissue prevents the elasticity that allows for breathing. Metals solids are NOT going to result in asbestosis, but they can result in other problems like
Metal Fume Fever
. The chemical composition of the metal matters. Metals are diverse and we only understand the health effect of a few metals... so best to protect ourselves.
awareness of sharpness of cut stock (deburr parts)
Clamp stuff down or parts can slip / rotate and cut
Use the ventilation available at the welding table. Keep it 9-10 inches from the welding point (to the best of your ability)
Avoid having flammables in the area where you weld (no cardboard boxes / no wood -unless you are bracing- / no paper / no oil soaked rags)
Wear the gear: welding coat / face shield / shop shields (protect others in the shop from arc flash)
brakes, steering, seat
brakes require fluid which means there can be leaks and there may be brake fluid waste
Leak: clean up immediately
with absorbetn shop paper. Rule of thumb: if you ring the paper towel and it drips fluid, then it needs to go in the hazardous waste collection. If you ring the paper and nothing leaks... then it can go in the regular trash.
If you have remanent break fluid or lubricants it is best to dispose of it as hazardous shop waste.
Ask the shop manager where the haz waste fluid collection is in the shop, and make sure you dispose of all the liquids there. Then throw the empty plastic container in the recycle bin (if it is recyclable or throw it in the regular trash)
Wear safety glasses - avoid metal fragments flying into your eyes
Are you having them encapsulated or are you encapsulating them yourself? If you are doing it yourself what are you using? The chemistry of the resin may be something from which you want to protect yourself and others
Be mindful: lost of power can run through wires/ super sound insulation is required. The the wiring should be really well anchored to handle the fatigue of days on coarsely paved roads. Check with alumni on this.
guard rotating parts / blades
cell or pouch selection
inspect cells or pouches before starting work
Avoid breathing the soldering fumes. Get a little table top soldering fan to direct the metal fume plume away from your face.
Small layup work?
we should talk about chemical safety and chemical shop work
A BMS should do 4 things (Miters):
protect against over-discharge
prevent over- charge
balance individual cells
prevent overheating - thermal runaway
Charging should be supervised
(I mean it... we are dealing with a lot of power storage to move a car on sun rays :explode: !)
AVOID flammable materials around your designated charging station (no paper/ no cardboard boxes/ no wood/ no oils)
Have a sand bucket at hand to smother a fire
can't pretend it is my strength, but the team needs to take electrical safety seriously (I think you do :smiley:! :). Seek the support of alumni on this and carefully document tribal knowledge on this subject for future members :<3:
proper tools for EE work
Aero / Composite
finishing up the body (gap fill)
layups in ME
Shop houses high levels of volatile organic compounds
What type of epoxies are you purchasing?
What are the properties / chemical composition?
What does the SDS say?
Epoxies and hardeners when combined result in an exothermic (heat producing) reaction. This produces chemical vapors that can be harmful to our respiratory system. The paste mixture can be harmful to the skin, and traces of materials can be ingested when we eat around where we work
Read the SDS (or get someone who knows chemistry to read it for you)
Get respiratory protection designed for the chemical groups listed in the SDS
Work with the mixture (mix and apply) in a well ventilated area
Communicate with others about the work you are doing before it happens
People that can be impacted by your work include
Museum: the air intakes for the building are near the courtyard
Architecture shop: the air of the life room and the air in the garage both leak into the architecture shop (we should talk about fluids)
Other clubs and teams who use the space
Your general N51N52 community particularly people on the 1st floor
Understand that others' health may be negatively affected by the use of epoxies and the volatile organics they release during application and curing
try to schedule work when this will have minimal impact on others
When finished for the day/night control open sources of odor
If the cured epopxy is not harmful to aquatic life take all the cups / mix sticks gather them in a plastic bag and throw them out (in the big trash on the loading dock)
Pit, testing, scrutenering
On the road
First aid: Know where first aid supplies are in the shop , and alert shop manager when materials run low
General good practices in shop
wear closed toe shoes
put long hair up
work with a partner
budget time: last hour of work is for clean up