Below information can be found on the National Board website.
http://www.nationalboard.org/index.aspx?pageID=164&ID=377
Advantages and Disadvantages of Using Magnetic Particle Examination
Advantages:
- Can detect both surface and near-surface indications.
- Surface preparation is not as critical compared to other NDE methods. Most surface contaminants will not hinder detection of a discontinuity.
- A relatively fast method of examination.
- Indications are visible directly on the surface.
- Low-cost compared to many other NDE methods.
- A portable NDE method, especially when used with battery-powered yoke equipment.
- Post-cleaning generally not necessary.
- A relatively safe technique; materials generally not combustible or hazardous.
- Indications can show relative size and shape of the discontinuity.
- Easy to use and requires minimal amount of training.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Tadic, Miroslav
Sent: Monday, October 19, 2015 11:00 AM
To: materials-welding@googlegroups.com
Subject: RE: [MW:23752] MT before or after PWHT?
Considering money in END final costs, and that MT is relativity cheap, you could use MT before and after PWHT
So, both examination can help you to verify any indication
That's my recommendation and in your place, I schedule END in that way
Best regards
Miroslav Tadic
Integrity Enginner
CEE
Gerencia de Producción - Mantenimiento
YPFB Chaco S.A.
| From: Urdiansyah Sent: Δευτέρα, 19 Οκτωβρίου 2015 - 07:42 To: Materials & Welding Reply To: materials-welding@googlegroups.com Subject: [MW:23742] MT before or after PWHT? |
Dear Expert,
Currently I work at fabricator of Pressure vessel and Heat exchanger,
During Renewal ASME, AI question about MT shall be done before or after PWHT ?
Kindly advice for this matter
Thank you for answered,
Best Regards,
Urdiansyah
Engineering PIC
PT.Daekyung Indah Heavy Industry
Cilegon Plant :
Jl. Australia II Kav. K1 Kawasan Industri (KIEC)
Cilegon 42443, Banten - INDONESIA
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