I found an error on the P&ID redline. It will go to a mixing chamber first. Nalco has designed the system. Once I get the revised diagram in hand I will update
-Mike
All,
There is a project at our site to inject sulfuric acid into one of our cooling towers to help descale or prevent scaling of our HX tubes. The cooling tower is a 3-cell design, with each cell's water level equalized. Circulation rate is about 20000 GPM total for the tower. Construction...
This is really great information. I agree, we might be using a combination of different techniques, but that Grundocrack technology is impressive, and exactly what we need on these several hundred foot runs of straight pipe.
I will follow up with what we go with.
-Mike
We are in the process of scoping for replacement of our underground firewater piping. It is currently an underground network of approximately 20,000 feet of a mix of mostly 6"-10" iron piping installed in the 1950's, and repeated leaks on the system are causing excessive maintenance spend for...
So what we ended up doing was condition-based hardness testing of the boiler tubes. We also tested the tubes that had previously failed to confirm with our readings and found the areas to be extremely soft with zero hardness. We found several tubes with hardness ranging from 400-700 HB...
We have a boiler that has several tubes that have undergone overheating tube ruptures due to poor water treatment and subsequent tube blockages. We have fixed the feed water quality issue and have just completed an acid wash of the boiler to remove any blockages from the tubes, steam drum, mud...
What are the best practices for visually witnessing a boiler hydrostatic test? If the boiler hydrostatic test must be visually inspected from inside the firebox for tube leaks, the confined space entry is not technically zero energy. I could see a practice where the boiler is brought up to...
Steve,
We are using GE APM/Meridium. We already have integrated the thickness monitoring modules in APM for our 510/570/653 inspections across the entire company, and needed funding to turn on the RBI module in APM.
-Mike
Luckily I was able to sell the project on risk reduction and decreased LOPC events which we had correlated to a production loss impact. It was also in support of our company goals for elimination of preventable leaks. Very difficult to relay this to the IT folks who control the budget for the...
All,
Our plant (petrochemical processing) is going to begin adopting API 580 for Risk-Based inspections. Currently our program is time-based inspection intervals. Was looking for some industry guidance on % reduction for inspection costs by adopting RBI instead of time-based inspections, but...
These are just for the FD and ID fans, about 150 hp each. The EC drives function and are PM’ed yearly but are very old with antiquated controls and parts availability are of concern so there would be capital investment needed to upgrade these drives also. The idea is to switch to VFD and...
Wanted to get anyone's thoughts and experiences on switching from steam turbine driven boiler draft fans to VFD driven fans. We are looking at significant capital spend rehabing our existing boiler draft fan steam turbines, which take steam off the desuperheaters of the boilers and let down...
All great information. For now we are keeping the LEL meters in place and going to engage experts as recommended such as Fike to determine more reliable means of preventing flashback.
-Mike
Currently I am in the process of determining whether or not our current LEL detection system is necessary from a process safety and regulatory standpoint (located in US)
The way this system is set up is several vacuum distillation column vents, on the vapor outlets of the jet condensers, are...
