I have a P1 vessel (2.5" thick) that requires some build-up of the internal wall due to wear. I have a groove welding procedure that allows for grooves up to 0.68" and all fillet welds...a PWP-7 procedure here in Canada. If my procedure qualifies me for all fillets up to 1/2" of deposited...
TGS4 - Thank you for the expedited reply.
The challenge for us for our project is that the AI does not want to be overly prescriptive and rather wants the contractor (us), the design engineer (our client), the vessel Owner and the NDE group to coordinate and agree to the type and extent of NDE...
All,
We are working on an ASME Section VIII, Div. 1 pressure vessel installed in British Columbia, Canada. The vessel is SA516 (P1) material with a 2.5" wall thickness. The vessel is 200' high and 30' in diameter. The vessel operates at 32-350F and at 150 PSI. We are installing several...
Thank you Metengr and Pradip.
On the included angle, my Welding Engineer also suggested increasing the angle. The drawings provided by the manufacturer list 30-degrees, so I'll have to go back to them to ask if the angle can be increased.
Regarding the PWHT of the butter pass and the impact...
Metengr,
Thank you for the reference (again). You're a wealth of knowledge and I certainly appreciate your assistance.
Under Table UCS-56-1 the GENERAL NOTES indicate the following;
(3) for welded joints of all thicknesses if required by UW-2, except post weld heat treatment is not mandatory...
Metengr,
Thank you again for the additional information and the reference article. I will review the recommendation with my welding engineer today as we expect to be qualifying the procedure for the work in the next few days.
A couple of additional comments/questions.
It is presumed that...
Metengr,
Thank you for the additional assistance. Can you please advise as to where I could find some supportive literature defining your recommendation? I ask as this may come up with the Client who will very likely have their own group of opinioned personnel who may hold an alternate...
Pradip,
Thank you for your response.
There are two separate types of nozzles.
The first is ASME SA240 Grade S32205 (P10H). This nozzle is an inset 2.5" thick, 10" diameter machined plate (same thickness as the vessel wall) that's welded flush to the wall of the vessel after cutting the...
The vessel is a Digester in the pulp and paper industry. Filled with chemicals, wood chips and water to facilitate the breakdown of lignin in the wood chips. The nozzles are to be installed through the entirety of the vessel wall. A sch. 80 pipe with a weld neck flange. The vessel wall is to...
All,
Thank you for the expedient response. I did consider the buttering pass in 309L on the P1 material as this was a recommendation we used in another P1 to P8 procedure for piping. My main concern here is the impact of PWHT of the completed weld on the nozzles being the dissimilar metals...
I have a question related to a Section VIII Div 1 U-stamped vessel. The vessel is manufactured of SA516 Grade 70 (P1) - 2.5" wall thickness, running at 150 PSI and 350F. We need to add-in a number of nozzles to the vessel. The nozzles are SA789 (P10H) and SA240 (P10H) respectively. Where...
Thank you kindly DVWE.
The impact testing came back sound and my welding engineer endorsed the new WPS...I was simply looking for anything additional that would support our position. I've even gone as far as looking at meta data for the region of installation to identify any periods of extreme...
Understood.
There was an error made on our behalf whereby we proceeded with the work WITHOUT impact testing for the WPS. Essentially, the piping was welded-out with 6010/7018-1 in SMAW. We have since impact tested the piping in question and it does meet the minimum requirements of the Code...
Thank you kindly for your response.
I did research all previous posts prior to posting my query. Though I did see this post, what I was looking for was something in the Code that would allow for the avoidance of impact testing. There is a notation in Column A of Table 323.2.2 - Section A-3...
Good Afternoon All,
I am posting this query as I'm struggling with determining impact test requirements for welds on A333 Grade 6 piping under the ASME B31.3 code of construction. The client has noted the design code of B31.3 and has specified that A333 Grade 6 piping is to be used. Minimum...
