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Thanks for everyone's input, much appreciated. To answer some of the questions/comments: XL83NL - Good point, however I believe you mean API 570. I will have to look into this. It has been in service. LittleInch - Sorry, I didn't think much detail was required as I was only concerned with...

Hey all. We are looking to re-rate a section of piping to a higher MOP. Currently all of this piping is insulated and I am trying to determine if I need to remove all of that insulation or if I can test in place. Our new MOP will still be lower than the ANSI rating for that section (why they...

Good day. I found some topics here but none of them seemed to answer my question. Note this is for B31.3 Normal Fluid service. I feel section 345-Testing in B31.3 does not do a well enough job describing testing requirements for threaded piping. I think I have 2 basic issues that need...

Thanks fellows. I found ISA 5.1 after my OP but I didn't find it helpful as it doesn't even discuss "emergency" and only discusses safety valves in terms of a spring PSV. As both you point out it looks like there is no real standard for "emergency" valves and it all comes down to our company...

LittleInch - No offense and I appreciate your feedback but when you state "the mysterious hub of indeterminate dimensions" I get the feeling you may not not have the experience I am looking for to answer this question? You are correct there is no specific code (that I know of) that outlines the...

Thanks for the feedback LittleInch. I don't want to sound rude, but I would hope that anyone who can answer my question would know what a hub blind flange is...maybe it was just confusing because I didn't specify "blind"? Sorry if so. To be clear a hub blind flange is basically a blind flange...

I hate to bump this thread but I haven't received any feedback.

Can someone help point me in the right direction on whether there is a standard on the proper naming convention for actuated valves that are used for certain purposes? For instance if an actuated valve is used for an emergency situation and meet certain criteria (such as it fails last) it must...

If there is one thing I hate about being an Engineer it is interpreting Codes, lol. I am being asked more and more from the field on if tapped flanges, centerline or off center, can be used. I feel I have a decent understanding on the requirements laid out in B16.5/B31.3. However, I am a...

Thanks DekDee. I figured the answer was pretty straight forward but needed some confirmation.

Where is this project located? - My question is just based on B31.3 and Z662, and at this point I'm not looking at any jurisdictional regulations. What are the local Codes, Rules, Laws and Standards regarding this subject? - As above What is the commodity? - Normal Fluid Service What is the...

Pressure/Leak testing has always confused me and I'm hoping someone can give me the likely easy answer? Testing requirements (the basics) are relatively the same for both B31.3 and CSA Z662 so I assume the answer doesn't change between the two? I think the answer is simple but thought I would...

Ok, so I have attached a photo of the MTR I received for one of my flanges. Maybe this will help to explain my issue and hopefully someone who has purchased these before can ease my concerns? The vendor has stated this is a dual rated flange. The flange is stamped with both B16.5 information...

Can anyone provide clarity on what determines the flange can be rated to 120C before deration? Is it the CSA Z245.12 or the PN designation that determines this?

Thanks guys, everything said makes complete scense. I appreciate the help.

I am trying to find this answer but I can't. I have been recently asked why we backfill prior to doing the strength/leak tests on a CSA pipeline. I can't recall the definitive answer but all I can remember is that is the way it is. My colleague is saying we would be able to find the leak...

Canadapipe - I could be wrong but IMO it's not clear enough. IMO they are very confusing on what the proper class rating is. Especially when it lists the description as "16" 600 RF LF2 CL1" which tells me its ANSI rating...but the vendor tells me they beleive it's CSA rated. One of the MTRs I...

I am getting so confused and I'm hoping someone with knowledge on these flanges can help me out. I am trying to order CSA Z245.12 flanges with the PN rating so that we can design our piping to 9930kPa @ 85C. When I spoke with our vendor he sent me a quote for CSA Z245.12 Gr. 359 flanges but it...

Thanks guys. I wasn't too sure how much restraint the soil loads would actually add. My first assumption was that it's not much and the anchor blocks are the main contributor, hence if you use expansion loops all that stress is relieved through there. But after thinking about it the soil...

I am in Alberta Canada. We have come across a situation that we have identified a pipeline that was installed back in the 90's had an install temperature of 10C, which puts us at a max operating temperature of 75C, however our max operating temperature of the pipeline is 85C based on the...