Search results for query: *

Hello all, Let me preface by stating that I am not an electrical engineer, but have enough knowledge to get myself into trouble... I am assisting with preliminary design for a temporary power plan. Background We are planning to install a 50 KVA 480-240/120 1-phase transformer about 150 ft...

Hello, Hoping to find someone with a background or experience with RO systems to provide some input. In brief, we have a RO system that we run in year round at 25% duty cycle. It filters municipal drinking water to a water quality suitable for injection into a gas turbine. Our operations...

I will be receiving a report from the divers who performed the inspection within a week or two. They packed up so, if found necessary, we will replace the valve under different job. Since I haven't heard anything about the other bolts, I presume they're in relatively OK condition. That is...

Thank you Ed, I'm a bit rusty on my knowledge of corrosion (pun intended). Do you have any comment on the difference between "active" and "passivated" stainless steel, and whether or not those effects could have had an effect? For instance, did we likely receive a passivated stainless steel...

Hey there, We have a gate valve submerged in chlorinated water (5-10 ppm hypochlorite); about 20 years old. Operators found the valve hand wheel to not be actuating the physical gate. Investigation (which required a diving crew to access the submerged valve) showed that the bolts which mate the...

Pardon me for reviving this question... I did some more thinking about this scenario and was looking for a concept check. Based on my new understanding, my original diagram can be simplified substantially, as such: Performing a rough energy balance on this scenario, assuming an absolute...

I knew there was a trick to it! Thank you so much for jogging my memory! I naively forgot to consider the absolute vacuum limit, which in retrospect, should have been painfully obvious... 15 psi cracking pressure makes perfect sense now. Greatly appreciate it!

Hello, First time poster -- hopefully I'm posting in the right place and following forum rules. Please let me know otherwise. I was tasked with spec'ing check valves for a boiler chemical injection system. My conceptual understanding of the fluid properties is a bit rusty, so I'd appreciate...