where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

WesDyne International (AMDATA Products)
WesDyne is an engineering and technical services firm dedicated to providing standard and custom nondestructive examinations (NDE) products and systems
2192 views
Technical Discussions
Binh, Du Xuan
Binh, Du Xuan
02:24 Aug-24-2007
NDT after PWHT

Dear All,

Pipe spool fabrication base on Code and standards B31.3.

Everyone can give to me advice ?

MT after PWHT shall be done or not necessary ?

Thanks and Best Regards,


    
 
 Reply 
 
Nigel Armstrong
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel Armstrong

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
08:38 Aug-24-2007
Re: NDT after PWHT

See B31.3 Para. 341.3.1.(a) "For P-Nos. 3, 4, and 5 materials, examination shall be performed after completion of any heat treatment."

This implies that P1 and P2 materials do not require examination after heat treatment UNLESS otherwise specified by the contract or relevant procedures.


    
 
 Reply 
 
G.Madhesan
G.Madhesan
08:29 Aug-24-2007
Re: NDT after PWHT
MT must be carriedout after any PWHT for detectingany stress cracks.
Regards,
Madhesan





    
 
 Reply 
 
Nigel Armstrong
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel Armstrong

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
04:53 Aug-25-2007
Re: NDT after PWHT
Madhesan

Yes you are right MT, is for detecting cracks (amongst other defects), however the Code writers are very experienced in the welding and heat-treating of standard materials (i.e. Group P1) and are sufficiently confident that proper PWHT of such materials will not cause cracking to be able to codify this with no requirement for PWHT MT. So in the case of welding plain carbon (P1)steels, "must" does not apply.


----------- Start Original Message -----------
: MT must be carriedout after any PWHT for detectingany stress cracks.
: Regards,
: Madhesan
------------ End Original Message ------------




    
 
 Reply 
 

Product Spotlight

Semi-Automated Phased Array Immersion System for Small Composite Parts

Turn-key semi-automated system as an improved and affordable solution for inspection of small comp
...
osite parts. Includes support table, immersion tank, scanner, PA instrument, PC, Analysis software, database, wedge management and other options.
>

Immersion systems

ScanMaster ultrasonic immersion systems are designed for high throughput, multi shift operation in a
...
n industrial or lab environment. These fully integrated systems provide various scanning configurations and incorporate conventional and phased arrays technologies to support diverse applications, such as inspection of disks, bars, shafts, billets and plates. All of ScanMaster immersion systems are built from high accuracy scanning frames allowing for scanning of complex parts and include a multi-channel ultrasonic instrument with exceptional performance. The systems are approved by all major manufacturers for C-scan inspection of jet engine forged discs. Together with a comprehensive set of software modules these flexible series of systems provide the customer with the best price performance solutions.
>

MUSE Mobile Ultrasonic Equipment

The MUSE, a portable ultrasonic imaging system, was developed for in-field inspections of light-weig
...
ht structures. The MUSE consists of a motor-driven manipulator, a water circulation system for the acoustic coupling and a portable ultrasonic flaw detector (USPC 3010). The MUSE provides images of internal defects (A-, B-,C- and D-scan).
>

Sci Aps Z-Series Portable Handheld Analysers

The world’s only handheld analyzer that measures carbon content in stainless (yes even L-grades),s
...
teels, and cast irons. Also accepted for low Si analysis for sulfidic corrosion analysis, and is widely used in the power industry for Cr analysis, for flow accelerated corrosion applications.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window