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Mechanical / Metallurgical
Services
MACTEC's capabilities in evaluating industrial
equipment and components have been developed through
many years of experience in a number of different
applications. This experience is essential in
managing the tools and methods used by industry
today to evaluate critical plant equipment and
to provide engineered solutions for near, imminent,
and post-failure conditions. MACTEC's capabilities
include the following services:
Failure Mode and Effects
Analysis
MACTEC employs a number of destructive and nondestructive
techniques to determine failure modes and effects
for a given set of circumstances. MACTEC engineers
and scientists utilize a number of proprietary
software programs for this purpose. Our experts
have a clear understanding of materials, applied
and residual stresses, crack initiation, formation,
and propagation, and determination of critical
crack size for a given component or piece of equipment.
We understand fracture mechanics, and can provide
engineered solutions.
Finite Element Analysis
MACTEC has the capability to model and analyze
specific conditions on a given component utilizing
finite element techniques considering plain and
solid figures that are symmetrical or asymmetrical.
This is accomplished by applying static, dynamic
and thermal loading. The figures represented may
be mechanical and/or structural and may encompass
both static and rotating components. These models
are used to establish normal, shear, Von Mises
and principal stresses as well as local and global
displacements. Harmonics and resonance parameters
based on the loading can also be determined and
furnished as a part of the program.
Fitness for Service
Although API 579 is a relatively new publication,
MACTEC has been involved with its development
by providing resources to work on the API 579
committee. MACTEC's approach to the engineering
evaluation for equipment that no longer meets
code requirements pre-dated API's initiative to
develop the fitness for service (FFS) document.
Now that industry has embraced the concept of
FFS evaluations, MACTEC is positioned to provide
engineering services to support such efforts.
We are familiar with the level 1, 2 and 3 assessment
requirements for each category of equipment and
deficiency, and have the staff and tools to conduct
the work.
Risk-Based Inspections
(RBI)
MACTEC's association with API has afforded us
an understanding of the approach the institute
has taken with respect to RBI. As with FFS, MACTEC
has become involved at the committee level to
assist in developing this important industry tool.
MACTEC has acquired a number of professionals
with backgrounds in risk assessment and management
who are familiar with likelihood and consequence
analysis. MACTEC's professionals have strong experience
in construction materials, process design, operating
conditions, and failure modes. We have experience
with industry-standard software packages used
to manage RBI programs, and have the expertise
to evaluate acquired data.
Metallurgical Analysis
MACTEC has a number of capabilities in the field
of metallurgical analysis. These include an arrangement
with the University of North Carolina to do elemental
identification and evaluation with a scan electron
microscope. MACTEC performs specimen preparation
and conducts the analysis in conjunction with
the university staff.
MACTEC's in-house metallurgical capabilities include
tensile testing, hardness testing (Brinell, Rockwell
and Microhardness), optical microscopy, field
metallography, mechanical bend testing, and compression
testing. MACTEC maintains a staff of metallurgists
and mechanical engineers for this purpose.
Metals Testing
MACTEC provides metals testing services to a variety
of industries including construction, industrial,
manufacturing, pulp and paper, power generation,
and petrochemical. Capabilities and services are
applied to quality assurance and nondestructive
examination and testing programs in fabrication
plants, at construction sites, and in existing
facilities. MACTEC’S offices nationwide
provide extensive geographic coverage and familiarity
with most major fabrication plants.
Specification Development
and Review
MACTEC can provide assistance during the planning
and preconstruction phases of your project. These
activities may include:
• Assistance in development of specifications
and quality assurance programs
• Assistance in preconstruction planning of fabrication,
construction and welding
• Review of design specifications, design drawings
and procedures
• Review of detailed shop drawings for compliance
with applicable codes and specifications
Quality Assurance /
Quality Control (QA/QC)
QA/QC services may begin with QA/QC programs developed,
implemented and monitored by MACTEC personnel.
Certified field and laboratory technicians provide
surveillance for verification that workmanship,
materials, fabrication, examinations, and tests
performed conform to applicable codes and specifications.
Specifically, MACTEC technicians can be deployed
worldwide to:
• Monitor fabrication operations
• Observe nondestructive examinations
• Verify personnel qualifications
• Witness performance tests
Welding Inspection
Registered Professional Engineers from MACTEC
consult with owners and contractors regarding
fabricator selection, and training and certification
of personnel. In addition, weld inspection data
can be interpreted for compliance with specific
service and code requirements. MACTEC engineers
and Level III (ASNT) personnel develop and qualify
welding procedures and nondestructive examination
procedures.
Visual and Dimensional
Inspection
MACTEC’S inspections include review of mill
test reports, review of welding, inspection of
materials, and fabrication procedures to verify
compliance with project specifications, applicable
codes and specific client requirements. Dimensioning
and verification of the location of details are
an important part of these examinations, as are
checking jigs, fixtures, layout, punching, cutting
and shearing.
Procedural monitoring includes joint fit-up and
preparation for welding, in-progress welding,
and inspection of the completed weld. Paint and
other coatings are evaluated according to standards
of the Steel Structures Painting Council.
Structural steel erection inspection can include
verification of member placement, inspection of
welded and bolted field connections, and inspection
of the placement and welding of bar joists, metal
decking and shear connectors.
Codes and Standards
• AASHTO Standards
• AISC Manual of Steel Construction
• ANSI Codes
• API Standards
• ASME Boiler and Pressure Vessel Codes
• ASTM Standards
• AWS Structural Welding Codes
• Steel Joist Institute Standards
• Steel Structures Painting Council Standards
Nondestructive Testing
• Acoustic Emission
• Eddy Current
• Electronic Instrumentation
• Infrared
• Liquid Penetrant
• Magnetic Particle
• Radiography
• Ultrasonics
Physical Testing
• Bend Tests
• Chemical Determination
• Electronic Instrumentation
• Hardness Determination
• Impact Tests
• Metallography
• Tensile Tests
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