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MECHANICAL ENGINEERING
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Inspect parts using liquid penetrant
inspection
level:
3
credit:
10
planned review date:
July 2001
sub-field:
Mechanical Engineering
purpose:
People credited with this unit standard are able to: prepare
for inspection of the part; inspect the part using liquid
penetrant inspection; and report on the inspection.
entry information:
Open.
accreditation option:
Evaluation of documentation and visit by NZQA, industry and
teaching professional in the same field from another
provider.
moderation option:
A national moderation system of regional panels and
assessor networks has been established by the NZ
Engineering, Food and Manufacturing Industry Training
Organisation.
special notes:
1
This unit standard is for people seeking certification at
Surface Methods level 1 (SM1) from the Certification
Board for Inspection Personnel (CBIP) to meet
regulatory obligations of surface methods inspection
operators. Certification requirements in addition to the
competencies outlined in this unit standard are
available from CBIP, PO Box 76134, Manukau City.
 New Zealand Qualifications Authority 2016
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2
There are special assessment procedures for the
theoretical and practical components of this unit
standard. Refer to the Accreditation and Moderation
Action Plan (AMAP) 0013 for details.
3
All on job assessments must be carried out in
accordance with enterprise procedures, the enterprise
being the organisation that performs the work.
Enterprise procedures are the documented procedures
for the inspection of the part using liquid penetrant
inspection. The inspection procedure(s) shall meet the
requirements of a recognised code or standard such as
the American Society for Mechanical Engineers
(ASME) Section V, Art 6.
4
All work practices must meet recognised codes of
practice (or documented work-site safety procedures)
for safety of personnel, product, and work-site, and
must meet the obligations required under current
legislation which include but are not limited to the
Health and Safety in Employment Act 1992.
5
"Contracts" in this unit standard include customer
instructions and the requirements of standards, codes
and specifications.
6
This unit standard covers new work, modifications and
repairs.
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7
Performance of the elements of this unit standard
requires near vision acuity at the level of N5 at 380 mm
as outlined in ISO 9712, Non-destructive testing Qualification and certification of personnel.
8
The term “parts” as used in this unit standard includes
but is not limited to structures such as buildings and
bridges, machinery, transport equipment including
aircraft, and pressure equipment.
Elements and Performance Criteria
element 1
Prepare for inspection of the part.
performance criteria
1.1
Inspection requirements are established from supervisor and contract in
accordance with the enterprise procedure.
Range:
inspection requirements are
penetrant type - contrast, fluorescent, dual;
penetrant method - solvent removable, water washable, post
emulsifiable;
developer - aqueous, non aqueous, soluble, suspendable, special.
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inspection
1.2
Equipment and consumables are selected and set up for the inspection in
accordance with the manufacturer’s instructions and enterprise procedure.
Range:
1.3
materials, tools, safety equipment, ultra violet (UV) light, cleaner,
cleaning materials.
Preparation of the part is carried out in accordance with the enterprise
procedure.
Range:
preparation includes – cleaning (washing, drying), verifying part
condition, part identification.
element 2
Inspect the part using liquid penetrant inspection.
performance criteria
2.1
Application of penetrant and the monitoring of dwell time are carried out in
accordance with the enterprise procedure.
Range:
2.2
Removal of excess penetrant is carried out in accordance with the enterprise
procedure.
Range:
2.3
application methods include - brush, dip, spray, flow.
solvent wipe, water wash, hydrophilic, lipophilic.
Application of developer and monitoring of the developing time is carried out in
accordance with the enterprise procedure.
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inspection
2.4
Defects are located by examination of the part.
Range:
2.5
defect types, relevant, non relevant, false indications.
Post inspection actions are completed in accordance with the enterprise
procedure and the inspection area is left ready for the next inspection.
Range:
post inspection activities may include but are not limited to cleaning, marking, storage, dispatch.
element 3
Report on the inspection.
performance criteria
3.1
Results are classified, interpreted, and documented to meet the contract
requirements in accordance with the enterprise procedure.
3.2
Inspection report is completed in accordance with the enterprise procedure.
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Comments to:
NZ Engineering, Food and Manufacturing Industry Training Organisation
Unit Standard Revision
PO Box 160
WELLINGTON
by July 2001.
Please Note:
Providers must be accredited by the Qualifications Authority
before they can offer programmes of education and training
assessed against unit standards.
Accredited providers assessing against unit standards must
engage with the moderation system that applies to those unit
standards. [Please refer to relevant Plan ref: 0013]
 New Zealand Qualifications Authority 2016