Something that a transportation workplace I worked for used for pre-tripping vans that workers used might work:
https://www.zonarsystems.com/solutions/2010-electronic-verified-inspection-report/
I'm not sure if it is a custom set-up or if there might be ones specifically for the vehicle you're...
I have trouble understanding this part of OSHA's code about dikes:
1910.106(b)(2)(vii)(c)(1)
Except as provided in subdivision (2) of this subdivision, the volumetric capacity of the diked area shall not be less than the greatest amount of liquid that can be released from the largest tank...
Update:
Told the boss I was concerned about the process of getting the tanks replaced, and quoted some concerns brought up in this thread, and he said he'd pass on my concerns to the engineer he used to design the concrete base. They also were the ones who suggested the anchoring scheme. So...
miningman, boss likely won't pay for surveyors. This is a pretty small company (<20 people). I don't have a budget or billing/buying power, I have to ask someone else to buy my lab supplies, let alone be able to pay for an inspection. I know it was a professional company that made the concrete...
Hey all,
I'll do my best to follow this advice. In the past, my input on equipment has been either ignored or I've been told not to worry about it, but hopefully this time will be different. I can't guarantee he'll listen to me, but he might listen to your responses since you have worked in the...
Also @3DDave, I checked the broken bolts again and it looks like a tension break, here's a picture:
It doesn't look too sheared off. I mean that it looks like a tension not shear break because the break isn't flat, although I've never seen a sheared bolt so I can't really say. Also it looks...
Yeah, we're thinking that the vent got clogged and that's why the pressure built up. I will pass on that info, but in the past I have not been asked to help design or install any equipment and I feel like this is going down that path. I think that since I'm young and have about zero hands on...
He doesn't have a college education if I remember right. Definitely finished high school though. I don't think he would care for me asking so I don't know if I can confirm....
He started this company ~8 years ago with some seed money from his father who was/is the CEO of a construction company...
So check valves have a spring inside that keeps the valve closed, but pops open when the designed pressure is reached to keep the tanks at roughly atmospheric. There's one to let air out and another to let air in. in the middle is the vent valve that is opened during filling. it is one inch and...
Thanks for the link MJCronin. So Yugoslavia was involved after all.... I take it then you don't think much of these tanks... I'll ask what standard they were built to.
@littleinch and geoff13 It doesn’t look like I said it earlier, the inlet is 2”.
I’ll see if I can get some answers from the boss and operators on how they leveled the tank and how they installed the vent. I can ask the manufacturer, but I’m fairly certain they were designed to be outside just...
I think we need to increase the venting on the other tank, and maybe switch to the anchor chairs to keep it from failing in a similar manner. Once again thanks for the advice, and let me know if I can clarify anything else
@3DDave The hole drill temp was probably ~40F, so Δ100F sounds right. No one was around when they failed so I can’t say definitively how they failed. I can say that one of them was found a considerable distance away, so maybe it was tension? Is there a good way to tell from the fragments...
@Geoff13 copied from above: . The tank had a truly flat bottom, now it is domed out , which seems to support the consensus of over-pressurization. Boss said in an email that they have a 1’ ball valve that is opened during filling and emptying, and 0.5psi check valves for when the product is...
@MJCronin The only thing they asked me about the tanks before buying them was “will the chemicals eat through them” and “what is the cheapest way to heat them.” Beyond that I wasn’t consulted about buying or installing them. I assumed that they had the experience and knowledge to do it, and was...
