[Shane Kavanagh]

Wow, big difference between the pipe and the flange material….!

I will defiantly look into getting some more testing done.

Regards
Kav

Kav

[Shane Kavanagh]

Sorry i miss understood you, The only impacts i had done was the weld metal center line.

I did however do a 4th coupon at the same time as the 3 used for the procedure and collected all my coupons back and mechanical tested parts so further testing could be carried out in the future.

Regards
Kav

Kav

[Shane Kavanagh]

Please see attached

Regards
Kav
WHS.jpg

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Kav

[Shane Kavanagh]

Yes i did do HAZ also.

I will look into the b31.3 option. I’ll give them a call and talk to them about it. Thanks for the info.

Regards
Kav

Kav

[Shane Kavanagh]

I’m sure they don’t along with many other things.

Test info
Test temp was -65.5, Size was 2.5×10, location was WMCL

Readings were 1(18J), 2(20J), 3(24J) average 20.7J

Assessment result was a comply for AS/NZS 3992 and ASME IX, although i picked up on the report for ASME IX that they used the 2007 edition. I have asked them to recheck against the 2010 edition and resubmit.

My client advised this morning that the PQR and WPS have been approved without changes and are being submitted to there client for approval.

Those late nights at central TAFE and long drives from sunny Rockingham to get there are paying off  🙂

Regards
Kav

Kav

[Shane Kavanagh]

Hi Thanks for the info, the material grade for the pipe was grade 6.
In the end i proceeded with the procedure using 50nb XS A333 Grade 6 one side and A350 LF2 the other side. Did 3 coupons.
This covers me for A1 and A2 material according to AS3992 -1998 and Group 1 and 2 in ASME IX
Construction Codes are as you stated B31.3 and AS4041.
For the mechanicals i had 2 x tensile, 2 macro, 2 x hardness, 2 x root bend, 2 x face bend and 1 x charpy v Notch@ -65.5C
Only had a slight tear on 1 of the bend test, 0.89mm but it still complied.
Hardness survey on the Macro was also done.
Overall the mechanicals and RT came back as complied. Now i need to get my client to approve the PQR and WPS.

Currently writing the PQR followed by the WPS for AS3992, i will keep in mind the impact testing restrictions.

Thanks for your help, if you have any further comments i would appreciate them.

Regards
Kav

Kav

[Shane Kavanagh]

I think this thread has been mixed up with the other thread also called pre heat  8)

Kav

Kav

[Shane Kavanagh]

Not sure if i got your question right but my understanding is it would be 25mm. See attached sketch, is this what you are asking?

Regards
Kav
sketchA.jpg

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Kav

[Shane Kavanagh]

Are you sure about the Tensile strength in AS/NZS 1554.4 2010? I cant see where it says that in the standard?. It mentions the Yield strength maximum is 1000MPa for the parent metal (2.1 (a). Yield is where it starts to deform plastically. What is the yield strength on the material cert?

Regards
Kav

Kav

[Shane Kavanagh]

Hi, my understanding and this goes back to trade school days is that LPG has an oxidizing characteristic. With fusion welding using oxy you don’t want this. Using Oxy and acetylene you have control and can mix an oxidising flame, a neutralising flame and a carberising flame, by controlling the mixture at the torch and gas pressures from the regulators.

When setting up a flame for welding you try to get a neutral flame if not slightly carberised flame.

Any of the old timers that frequent this site should be able to confirm this or correct me, because it was only about 30 years ago all your pipe was welded this way before TIG became as widely used as it is today 🙂

Regards
Kav

Kav

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