Pressure Gauge close to maintenance manway opening? 1

[Leska]

I am working on a ASME Sec VIII, Div 1, Pressure Vessel together with my company's counterparts from Germany and they say that there is an additional pressure gauge needed directly connected to the vessel to check that the vessel is depressurized before opening manway.
That I know ASME doesn't require this. We have one gauge in control area maybe 10’ away, but not on the vessel itself.
If someone knows anything about this requirement, please respond.

 

[gr2vessels]

leska,
The pressure gauge installation on a pressure vessel is not a code requirement, hence the provision and location of this gauge is a client preference. I would politelly advise the extra costs involved with this addition and if possible, install the gauge, with a nice 8" dial.
gr2vessel

 

[vesselfab]

is this a quick opening manway or a bolted cover?

 

[Leska]

Thanks gr2vessels (Mechanical),
I am advising the same, but my bosses are mostly interested in bare minimum, nothing else... Fixed price contract...)) I will try to squeeze something out...

vesselfab (Mechanical)

It's bolted cover 24".
Not really high pressure, but dangerous fluid, and I have to think about level gauge too, I have two problems. My operating station is few feet away and my opening is bellow liquid level...

Maybe, more money to spend...;((( They say, one guy to look another to open…))

 

[vesselfab]

then yes, just as gr2vessels as said.

 

[chaulklate]

I wouldn't be too concerned about the manway being below low liquid level, it is common practice to completely drain the vessel after depressurizing and before entering, especially if it is containing a hazzardous material. Consider putting a slight slope on the manway neck so all liquid drains back into the vessel and not spill forward when the manway is opened.

 

[Leska]

Thanks chaulklate (Mechanical)
I already specified that in my Technical Specifications and I was guessing that is a normal practice anyways … Of course draining will be in maintenance manuals… but my counterparts want to have “idiot” proof system…
I am an engineer who switched from automotive to heavy industries (everybody probably knows why...;((( and left an interesting job to do this).

Going from interesting and fast-paced automotive to power generation..;(((

We have to be flexible... otherwise won't be able to feed our families... and I still have to learn lots of stuff in pressure vessel and piping engineering. I appreciate help from all of you guys.

Best regards,
Leska