Wow! that's a pretty different attitude,I am surprised! Shouldn't the 'nut' always be the turned member? Unless, of course it becomes a captive 'nut'? I know we measure the torque from 'nut' side only? I would have thought that it was good engineering practise to set up and maintain a bolting...
To be honest, does it matter? I doubt it does!
However,
ASME has clearly stated that modification of pre fabricated listed elbows exit angles are a no no!
Simple!
If you need to know the background, contact ASME.
DekDee, nothing has been deleted! If the original PQR was performed with this tri mix gas (SG-ACO 12/2 or M24) then how can the continued use of same shielding gas be a problem for production welds given the PQR passed and welders have passed WPQ's using WPS's written from the original PQR?
Patrick,as Al and myself have tried to assure you, as long as you have an accepted proven PQR/WPS structure in place using the M24 or rightfully (under AWS!) SG-ACO 12/2,designated shielding gas, you will be within the auspices of AWS D1.1. BTW, the data sheet or the welding consumable must be...
You might need to go to the manufactures as they can be proprietary materials.www.specialmetals.com would be a good place. Here is the link for Inco 625:
http://www.specialmetals.com/documents/Inconel%20alloy%20625.pdf
The letter 's' is also required for partial penetrant welds such as shown in 'Single-V butt weld with broad root face' and with the 'Single-bevel butt weld with broad root face',Items 5&6 in table 1).It states this in the footnote at the bottom of that table.If their is no 's' value buttweld...
Nuts typically have a bearing surface as do bolts. That should be the point of contact or interference. It depends on the application as to weather a nut on the wrong way would warrant rejection of an entire part of the job. But I have seen it do so before.
Patrick, not allowed by who? Ar/Co2/O2 IS listed in AWS SFA 5-32. You have a Procedure and the full suite of tests and NDT etc prescribed by D1.1.
Don't try working to EN standards when using American standards.
Hi! you really need to establish a standard that your company is adequate to comply to and meet audit requirements. In europe, this is usually ISO 9001.
Hi All!
I fail to see the reason for any arguing or further debate over this matter, roteqpmt's reply seems to have answered the OP's question quite well! Any further debate over the matter seems to require ASME's input and approval. It's quite simply, you're not allowed to alter the angle of...
PTFE tape and Krytox anti-seize compound seems a bit strange to me, I'm off the same opinion as edliet, one make for all! The use of PTFE tape as well as Krytox would really make me consider jointing procedures1
Interesting reading,I would tend to agree with EnergyMix, not sure the world is ready for super-critical reactors just yet. On a technical point, the USSR's Alfa class subs ran lead-bismuth cooled reactors, which required them to be kept running at all times or for a supply of superheated steam...
I like Mikes idea but I would investigate the use of 95% Nitrogen, 5% Hydrogen as your tracer gas. It's quicker,a lot cheaper and will find smaller leaks and as a bonus,you can release the gas into the atmosphere.So no costly recovery equipment.
