WELDING PROCEDURE AND PERFORMANCE QUALIFICATION

A total quality assurance scheme, embracing all aspects of manufacture would have necessarily made all attempts to ensure qualification of all the resources with respect to a specified work environment. Right from raw material delivery conditions, to the commissioning of  product, all the facilities and systems including man power are subjected to listing and approvals are obtained by conducting qualifying tests, whenever necessary.

General Requirements as Specified in Contractual Documents

Depending on the type of construction,  the broad welding procedure specifications are usually drawn. A list of general parameters observed for such qualifications are listed below:

1. Scope of work and code by which the work is covered, etc.
2. Welding processes employed.
3. Base metals specifications and applicable type, classification and composition of filler rods and weldment.
4. Type of current and current range.
5. Welder qualification requirements
6. Joint designs and tolerances.
7. Joint preparation and cleaning of surfaces for welding.
8. Tack Welding.
9. Joint welding details
10. Position of welding involved at factory and at site.
11. Preheat, interpass and post heat temperatures.
12. Peening.
13. Heat input electrode run length.
14. Post weld heat treatment.
15. Repair of welds.
16. Inspection quantum and stages acceptance levels.

 

Posted Date: 9/18/2012 1:11:05 AM | Location : United States

Ask an Expert

Related Discussions:- Welding procedure and performance qualification, Assignment Help, Ask Question on Welding procedure and performance qualification, Get Answer, Expert's Help, Welding procedure and performance qualification Discussions

Write discussion on Welding procedure and performance qualification
Your posts are moderated

Write your message here..

Related Questions

The welding arc, THE WELDING ARC The heat that is developed at the cath... THE WELDING ARC The heat that is developed at the cathode and anode of an arc discharge is able to melt most of the metals and alloys. Hence, the arc is used as an intense heat

Thermal, what is Otto cycle? what is Otto cycle?

Define inversion of a mechanism, Define Inversion of a mechanism ? Illustra... Define Inversion of a mechanism ? Illustrate in detail about any three of the Inversions of the single slider crank chain Mechanism. (a) What do you understand by Degree of Free

Instantaneous-absolute-relativec centre-coriolis component, Instantaneous C... Instantaneous Centre: this is a point around which link rotates at a particular instant. Absolute Instantaneous Centre: this is a fixed centre around which link rotates.

Explain about nonconforming material, Q. Explain about Nonconforming Materi... Q. Explain about Nonconforming Material? If PMI test results indicate that the material or item does not meet the specified composition of the alloy, the subject material/item

Layout studies and analyses, Layout design development is supported by a nu... Layout design development is supported by a number of studies and reviews, including: • Hazard identification (HAZID Study) and risk assessments - both qualitative and quantita

Define edm machine under varying cutting condition, EDM Machine under varyi... EDM Machine under varying Cutting Condition a) All the experiments have been conducted on a Z numerically controlled (NC) oil die- sinking EDM Machine. b) The EDM Machine is

Define the winged-edge representation, The Winged-Edge Representation P... The Winged-Edge Representation Perhaps the oldest data structure for a b-rep is Baumgart's winged-edge data structure. It is quite different from that of a wire-frame model, be

Predict the output of load - curved beam theory, A load cell based on a "pr... A load cell based on a "proving ring" is shown below.  The circular portion of the load cell has an inner radius of 1.25 in and outer radius of 1.50 in.  The ring has a depth (i.e.

Calculate the power of the engine, A Torsion dynamometer is used in a prope... A Torsion dynamometer is used in a propeller shaft of a marine Engine. It is found that the shaft twists 2 o in a length of 20 meters at 120 r.p.m. If the shaft is hollow with 300