Any where mentioned about welding machine calibration is required for pipeline

[mpk mpk]

Dear Experts,

Any where mentioned about welding machine calibration is required for pipeline.need Reference.

Thank you,

Yem Pee.

[Manivannan Hemu]

Hi,

You have not mentioned, which code you are following
for your production/fabrication weld.

In API 6A para 6.3.2.7 -  welding controls specify as below:

" Instruments to indicate temperature,voltage,and ampearage shall be serviced and calibrated in accordance with the manufacturers written specification"

 

Manivannan.

 

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[suresh kumar]

dear mani,
All welding machines should be calibrated by yearly basis or 6 months
once or as per manufacturer procedures.its mandatory things in
welding, why i am telling this for example,
in wqt, or pqr or any other documents we need to submit calibration
certificates for all equipments.

*T.SURESHKUMAR. B.E, M.B.A, NDT LEVE-II.,
QA/QC INSPECTOR (PIPING, WELDING,STRUCTURAL)
DODSAL ENGINEERING & CONSTRUCTION PTE LTD,
ABUDHABI,
UAE.
*
*
*

[yanfei Xiu]

Dear tskumar,

could u tell me where the requirement  that you said“in wqt, or pqr or any other documents we need to submit calibration
certificates for all equipments.” is,because I didn't find any about this in ASME Ⅸ 

2012/5/12 suresh kumar <tskuma...@gmail.com>

[Obidike, Boniface (GE Oil & Gas)]

I don’t think submission of equipment calibration cert. is stated in any welding code but it’s a norm/good practice before WQT or PQT or any work requiring such equipment is carried out. It is always stated in any good quality contractual document. Moreover, It is one of the QC preliminary requirements before welding will commence including the voltage/current/temperature measuring devices.

 

“Quality is the Bone, Be the Dog Always”

 

Boniface Obidike

QA/QC Engineer

Speciality Connectors & Pipes

Drilling and Production Systems

GE Oil & Gas Business

Mail: Boniface...@ge.com

Office: +234(1)4629400

Mobile: +2348163479738

Home: +2348039409934

[Valiullah Sarpanch]

Please refer BS-7570, which is specifically dealing with wedling machines calibration.

 

Thanks

[Arunachalam A]

Calibration of welding machines are required if you want to control the welding heat input. Heat input is required to be controlled when you are welding materials which are designed for low temperature and you are using a WPS/PQR qualified with impact tests.

Impact properties are affected due to heat input.

So you decide, what to do.

Control the heat input by controlling Voltage(V) / Amperage(A) and Travel speed.

To control V & A, you need calibrated Welding machines.

So if you want to weld low temperature materials or even materials which are required to be impact tested due to MDMT, you need to calibrate the welding machines, so that heat input is controlled.

Arunachalam

AIS

Abu Dhabi

Arunachalam.A,

Abu Dhabi

0097150-5257122