Engineering Services
Building inspection and supervision of steel structures means that omnibus doings of technical council, indication, survey, inspection, witness, approval and so on that a service firm entrusted by an ordering company person works in a process of confirming quality and checking this instead of it him or her to the superintendent, learning about the technique of the work and an honesty are required before everything. Misung would make assurance doubly secure to superintend works so as to answer the requirement of an ordering company person by utilized accumulated techniques.
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Check point of a summary and an organization of a work
Arrangement and size of working shop, field, material pile up and a product pile up.
An engineer's qualification and number of personnel.
A technician's qualification and number of personnel.
A person in charge of each working part, a collectively responsible person's name and an organization chart of that construction.
A way inspection and a standard inspection of many kinds within the firm.
Inspection equipment and inspection record.
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Check point about process of workshop and using material
Writing clearly about a flow chart of working process, designer's approval, test in attendance of a witness and inspection in presence of a witness.
List of machinery and equipment used in the project.
The quality and manufacturer of steel materials and the way to distinguish and to store the quality of materials.
The type of welding material used, name of the manufacturing company, rod diameter, location of use, usage and handling precautions
Technical examination matters, maker and matters that demand special attention in treatment of the high tension bolt.
Technical examination matters, maker and matters that demand special attention in treatment of the jolting machine.
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Check point about cutting, working and assembly
A name, tributary and matters that demand special attention in use of cutting machine.
The standard of accuracy in beveling working, cutting and drilling.
The range and the way to treat friction face of jointing part of high tension bolt and cautions.
Sketch shows a manufacturing order of pillar, beam, assembling welder, use gig, cautions in assembly.
Security of horizontal accuracy of an assembly stand and cautions of the way to equip it.
Location of welding for assembly and cautions.
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Check point about regular welding
The kind and cautions of an end tab.
Cautions about gouging.
Cautions about back plate.
Cautions about per heating.
The way to use a rotation gig and positioner to ensure flat welding positions and cautions
The way to restraint welding distortion at most and to repair the distortion and cautions.
Check the qualification and the term of validity of a welder.
1) Manual arc welding
2) Automatic arc welding
3) CO2 semiautomatic welding
4) Existence of a qualification given by the other examination to officially approve welding faculty.Articles about a standard and procedure of the examination to officially approve welding faculty
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Check point about product inspection
The way to inspect dimension and a standard of accuracy of finished products.
A standard of visual inspection.
Ultrasonic test or the other N.D.T test
The way to repair places failed in UT test.
The place to send in a report of UT test and circulation of the report.
In high tension, check a condition of friction face of a part connected by friction.
Check of the other joint part.
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Check point about painting, storage of product
The kind, maker, painting process (painting frequency, ratio of spreading) and cautions of anticorrosive paint.
Cautions about temporary equipment recuperation of a product
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Transportation of the products
Check the conveyance process is proper.
Value of a wagon and cautions when conveying products
Flow about steel structure superintend
Flow about steel structure superintend Examination of papers A field study of a work Examination of a plan and specifications Examination of the shop DW'G, Examination of the gist paper. Examination of specifications of every kind, Examination of the gist paper of field institution. Material inspection (mill sheet) Entering of materials Material testing (tensile test, impact test, bending test) Preprocessing Inspection of burning material Surface roughness Marking Inspection of cutting plate, Inspection of making confirmation Cutting, benking Cutting a condition inspection Alignment test (permissible error confirmation) Fixing and welding of the panel Tack welding inspection Welder faculty test, WPS confirmation, welding procedure test PQT execution→ PQR draw up→approval Hole processing CNC program work, confirmation of hole rules The treatment before Straightening inspection (inspection of correct method propriety) propriety) Fit up and welding of the box Fit up inspection, Dimension inspection, Camber measuring, Inspection of an axis force of bolt
Inspection of blasting Inspection of the coat with paint Inspection of surface roughness and treatment grade
Inspection of coat with painting a condition (temperature, humidity, the dew point, temperature of iron surface, thickness of a cut, inspection of adhered force and inspection of pin hole) Transport Inspection of packing and forwarding Installation Examination of a method of construction propriety, The all of the field welding
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Check point of tack welding
Check the qualification of a tack welding.
Check concentration of erection materials.
Existence of using a proper welding rod in tack welding.
Check of welding condition.
Dryness condition of welding rod.
Location of tack welding.
Length and pith of tack welding.
Bead shape and penetration of tack welding.
Existence of undercut or overlap of welding bead.
Scrutiny of preheating in case that a material is thick and the temperature is low.
※ Please refer to the data room for further welding information.
In addition to the increase in the use of steel due to the increase in size and length of the structure, the method of evaluating the integrity of the weld is becoming important. Therefore, Misung has the ability to read and evaluate the results according to the relevant standards and specifications, with a sense of responsibility for performing perfect inspections, and to ensure the reliability of steel structures and prevent the source of insolvent construction, direct production inspection and parallel inspection at the forefront of the site. Misung is focusing on securing the perfect quality of the inspected structure, not just the inspection, by providing immediate cause analysis and repair plans during construction for defects that appear after non-destructive inspection with long-term experience and technology.
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Definition of Non-Destructive Testing
Non-destructive testing applies physical energy (sunlight, heat, radiation, sound waves, electricity and electrical energy) to the material without changing the prototype and function of a material or product at all. A suitable transducer is used to change the properties and characteristics of applied energy due to the presence of material abnormalities or defects. It refers to all tests that determine the degree of defects or abnormalities in the material by measuring the amount of change in these properties.
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Types of non-destructive testing
Radiographic Testing
Ultrasonic Testing
Magnetic Particle Testing
Liquid Penetration Testing
※ Please refer to the data room for more information about non-destructive testing.