CENTROTEST ASIA, INC. 473-E, F. ORTIGAS ST., BGY. HAGDAN BATO
LIBIS,
MANDALUYONG CITY, PHILIPPINES 1552 TEL. NOS.: (632) 535-4997,
(632) 494-6249
FAX NO.: (632) 535-4997 EMAIL: [email protected]
WORK INSTRUCTION FOR MAGNETIC PARTICLE EXAMINATION
1.0 Purpose
This procedure delineates the requirements for the performance
of Magnetic Particle (MT) Inspection by Centrotest Asia Inc.
personnel who are qualified and certified to perform MT
inspections, and to ensure that inspected items comply with
specified codes and standards.
2.0 Scope This procedure applies to Magnetic Particle inspection
activities performed by NDT personnel on items specified under a
specific code or procedure.
3.0 Definitions Inspection A phase of quality control, which by
means of examination, testing, observation, or measurement
determines the conformance of materials, supplies parts,
components, appurtenances, systems, processes, or structures to
predetermined quality requirements. Magnetic Particle (MT)
Examination A Non-destructive Examination (NDE) method utilizing
magnetic leakage fields and suitable indicating materials to
disclose surface and near-surface discontinuity indications.
Testing- The determination or verification of the capability of an
item to meet specified requirements by subjecting the item to a set
of physical, chemical, environmental, operating conditions.
4.0 Responsibilities Technical Manager - It is the
responsibilities of the Technical Manager to ensure only those
personnel who meet the requirements of this procedure are permitted
to perform inspections/activities covered by this procedure.
Personnel performing inspections shall be qualified and certified.
MT Inspection Personnel - Personnel certified to Level I, II, or
III may perform the examination described herein and record the
results of that examination. Personnel performing MT testing shall
wear appropriate safety and protective equipment during
testing.
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CENTROTEST ASIA, INC.
5.0 Equipment and Materials 1. Magnetizing equipment may be
permanent magnet. 2. MAGNAFLUX WHITE CONTRAST PAINT WCP2 3.
MAGNAFLUX PREPARED BATH 7HF 4. Solvent Cleaner (SKC-S)
6.0 Surface Preparation The surface of the part to be examined
shall be essentially clean, dry, and free of contaminants such as
oil, grease, loose rust, loose sand, loose scale, lint, thick
paint, welding flux, and weld spatter.
7.0 Testing Procedure a) Clean the surface using SKC-S prior to
Magnetic Particle Examination. b) Spray white contrast paint
(WCP-2) in the test surface. c) Magnetize the test specimen/ sample
and apply the prepared bath (7HF). d) Evaluate indications using
white light with recommended lighting intensity. e) Demagnetize
after evaluation. f) Post Cleaning.
8.0 Acceptance Criteria
a) The acceptance standards for the interpretation of items
inspected shall be the customers requirements
or the contract document. b) If no customer requirements or
contract document are available, the international specification or
code
relevant to the scope of work shall be used. 9.0
Documentation
For each examination, the following information shall be
recorded:
a) Procedure identification b) Magnetic particle equipment and
type of current. c) Magnetic particles(visible or fluorescent, wet
or dry) d) Examination personnel identity and qualification level.
e) Record of Evaluations f) Material thickness g) Lighting
equipment h) Date of examination.
10.0 Reference
- ASME V (2010) Article 7 Magnetic Particle Examination
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