I used to have a list of acronyms for drawing types to be used when numbering drawings. I can't find the list. A few I remember are listed below. Does anyone have a longer list or something similar?
Drawing Codes
GA General Arrangement
ISO Piping Isometric
PFD Process Flow Diagram
PID Piping...
I am experiencing an issue with one of the chillers at my facility and am looking for some insight. The unit is a 1974 vintage Carrier 17DA unit. It is nominally 5000 tons (holds 15,000 pounds of R-134A).
We took it down for maintenance and have been experiencing 100+ amps higher draw on the...
At my facility, we are currently lining 5 sumps (35' deep x 13.75' wide x 47' length) with stainless steel liner. Essentially, these are field fabricated 316 SS tanks built inside sumps. The sheet is 0.125 and most of it is 10' w x 4' high in size. At the horizontal seems, there are 0.25 inch...
My colleague is working on a valve installation on a chilled water supply to one of our customers. At the tail end of the project, the customer decided to add temporary chiller connections for emergency use. The supply to the connections in a 24" line off of our 60" main. The customer wants an...
I have some new polisher vessels I am putting in my facility. I plan to use two short runs of 4" SS flex hose for the influent and effluent vessel connections to hard piping. The vessel supplier is showing a male camlock on the influent and female camlock on the effluent. I would think it would...
I've been looking at an issue here at my facility for the last 4 months or so. I'll start with some background, we have a GE LM6000 turbine with a EIT HRSG behind it. Back in June of this year, a loud intermittent banging was observed by one of our personnel. I began investigating that and found...
Does anyone have a company they have had good experience with that specializes in relining sumps/tanks? I have a proposal from a vendor to reline them with 316L SS. They are 30’ D x 47’ W x 13.75’ L (5 total). The cost is quite high, so hoping to find an alternative vendors to bid.
Just looking for a quick peer check on this. I am looking to control flow to 3500 GPM (this is for a new installation of a air separation vessel on chilled water system). I did some quick calcs and it appears I may need to use a 6 inch control valve since 12" and 8" seem too large. Does this...
I have some old Ingersoll Rand pumps I may replace. The pumps are left side discharge (meaning the discharge vertical, but is offset to the left of the suction centerline when looking at the pump from suction side). I have talked with a few of my local pump vendors and everything they offer is...
I am contemplating an opportunity that has been presented to me at my current employer. Here is a little background about me:
Mechanical engineer, PE, BSME, worked at Aerospace design firm, EPC (metals/mining was the main market), utilities (power generation), railroad (as a mechanical...
I have an access platform I am adding along a boiler. The design is cantilevered and supported by 6x6x0.25 HSS tube. I did a quick calculation based on max loading to see what tension would be on the anchor bolts (see calc below and model of baseplate). I was looking at using quick bolts and...
I am looking at adding a work platform for some control valves at one of our facilities. After several iterations, I am going with a hanging platform that is supported by existing structural steel roof beams. This appears to be the best solution based on congestion in the area. That said, I am...
I have corrosion issues with currently installed galvanized steel components (railing, beams, etc.). I am trying to figure out the best material to replace the existing items with. I am pretty set on FRP, but am not sure if there may be a better material for the application. Any insight is...
I am looking at replacing some galvanized steel beams (W8x18 and W8x24) with something more corrosion resistant. The specific application is for a cooling tower walkway/laydown area. The beams support FRP grating around the perimeter of the tower. The galvanized coating is failing rapidly on the...
I am looking at an application that has a 4" sch 80 pipe mounted perpendicular in the flow stream of a 24" and possibly a 36" pipe. A structural engineering reviewed it and said the force on the pipe is around 20,000 lbs. I found this hard to believe so I looked at it independently. I used drag...
I am contemplating starting a part time online business to sell a product I designed. I have been looking at the state laws to ensure I don't get myself in any sort of a legal jam. Here are two scenarios I am curious about:
1. I offer a standard design (maybe 4 or 5 configurations of the same...
My maintenance guys uncovered this under some insulation. They weren't sure what it was, so they asked me. I also wasn't sure. I suspect a check valve, but it was too corroded to read any of the letters on the body. It also does not look like any piping component I have seen. One side looks like...
