We receive formed heads of all sorts of sizes and schedule thicknesses. We typically rely on the supplier to perform the correct work. We will perform a check on the size/thickness as well as verify the heat# to the MTR. Typically we throw a tape measure across the opening and then a caliper on...
We have a project that we were about to encounter a problem with. Thankfully it resolved itself without going this direction but I still have the question in my mind of: is it possible?
-We have a pressure vessel; Section VIII Div 1. Head welded to a shell using a single sided butt weld.
Due...
All,
I am currently going though some issues with an impact tested weld procedure that also needs PED sign offs :( P1G1-P1G1 1.5" coupon GTAW root with SAW fill/cap.
I completely understand that I need to use QW-403.6 and that it only qualifies me for a min weld thickness of 5/8. It's...
There are several shops that produce U-stamped brewing vessels. A company in southern Missouri produces several various vessels per week. They have a full-time AI.
https://www.paulmueller.com/commercial-brewing-equipment/brew-kettle
Clients reject weld procedures all the time. I doubt I have a pass rate as high as 20% with our WPS'. They meet ASME, CRN, and PED; yet customers continue to ask for specifications beyond standard/outside norms.
Charge them 300% mark up of what it would cost you to re-qualify a new procedure...
We use ER90S-B3 for GTAW, FCAW.
Sub arc we use B9
Just be aware the concerns with dissimilar metals welded to P91; the EPRI group has a LOT to say about concerning temperatures, PWHT, metal chemistry, etc.
Does it have to be open end?
https://www.grainger.com/product/RIDGID-Aluminum-48-Straight-Pipe-4NV22
Usually for bolts and nuts that size you need to use a hydraulic system such as Hytorc or Enerpac.
I bet Phil Swift could slap some Flex Seal on that...it's a 'fast solution'.
As both MJCronin and IFRs said:
First priority: make it safe (immediate action)
If you have done this; you don't need a 'fast solution'.
MJCronin is right..
The "Fast" solution is to CORRECTLY REPAIR THE VESSEL.
If...
My shop works with materials/vessels for Power, Oil/Gas, Chemical plants, all kinds of groups with particular quality needs.
In general, you will meet everybody's assurance requirements if:
Step 1) Make sure the supplier is trusted in the industry. Has a good history, client base, certified...
Standard Designation: BPV Section I
Edition/Addenda:
Para./Fig./Table No:
Subject Description: PG-52.3, Circumferential Ligaments
Date Issued: 06/29/1998
Record Number: BC98-160
Interpretation Number : I-98-15
Question(s) and Reply(ies):
Question: Does PG-52.3 require the cross-sectional area...
So... let me get this straight.
-Your supplier sells you defective equipment. They have no quality control process to control the failure rate that is as high as 25% of their shipped product.
-You continue to buy from them.
-There is no negative aspect for them aside from occasionally you...
Not unusual for Aramco. We usually end up just giving them a cost adder and perform 3 PWHT with lab testing at their cost.
It's a customer spec. If they want to pay for it...
It's not a code requirement but usually a customer req. See if you can look for MS-HRSG-0002 or DEP 30.10.60.18 as they both seem to be adopted by most. Others like to use API TR938-B.
The customer should realize that they changed the scope of the project after the fact.
Either they accept it with an R-stamp, or they accept a cost adder for scope change that is equal to the cost of building them a whole new unit.
(We have had some picky over-seas offshore companies that...
JR/Moltenmetal,
That is effectively what we have come up with and the AI agrees. The trick is trying to get that info across to the customer. You both provided the same answer but with a little better wording than I was originally using so thank you, I will try to re-phrase it with the customer...
