AISC Fabricator key terms

A structured set of policies, processes, and records a fabricator uses to consistently meet customer and code requirements. It defines who does what, how work is checked, and how problems are corrected.

A controlled document stating a fabricator's quality policies, organizational responsibilities, and the procedures used to control fabrication work. It is the top-level reference that other shop procedures support.

A documented, approved method describing how a specific fabrication or inspection task is performed, including responsibilities, steps, and acceptance criteria. It lets work be repeated consistently regardless of who performs it.

A project document listing each inspection and test to be performed, the sequence, the responsible party, and the acceptance criteria or record produced. It ties code requirements to actual hold points on the shop floor.

A stage in fabrication where work cannot proceed until a specified inspection or approval has been completed and documented. It is agreed in advance with the customer or inspector.

A step in the work where the customer or inspector is notified and may observe the activity, but fabrication can continue if they do not attend. It differs from a hold point, which stops work until released.

A record describing work or material that does not meet specified requirements, along with the disposition and the action taken. It drives correction and prevents the same problem from recurring.

Steps taken to eliminate the root cause of a detected problem so it does not happen again. It goes beyond fixing the immediate defect and is tracked to closure.

A structured investigation to find the underlying reason a problem occurred, rather than only describing its symptoms. Common approaches ask why repeatedly until the true source is identified.

The decision on how to handle nonconforming material or work, such as rework, repair, use-as-is, or rejection. It must be made by authorized personnel and documented.

Actions performed on nonconforming product so it fully conforms to the original specified requirements. Reworked items are typically re-inspected against the same acceptance criteria.

A process that brings nonconforming product into a condition acceptable for its intended use, even though it may not fully meet the original specification. Repair usually requires engineering approval and documentation.

A written document that provides the welding variables and ranges a welder must follow to produce a weld that meets code requirements. It is supported by a qualified procedure qualification record.

The record of the tests and results used to prove that a welding procedure specification produces sound welds. It documents the variables tested and the mechanical results.

Documented evidence that an individual welder can produce welds meeting code requirements under specific conditions such as process, position, and thickness. It is separate from qualification of the procedure itself.

A record showing the tests a specific welder passed, the essential variables covered, and the dates of qualification. It is used to confirm the welder is qualified for the work assigned.

Credential demonstrating that a person has met the education, experience, and examination requirements to perform welding inspection to a recognized standard. It defines the scope of inspection duties they may carry out.

Inspection methods such as ultrasonic, radiographic, magnetic particle, and dye penetrant that reveal internal or surface discontinuities without damaging the part. Results are recorded and compared to acceptance criteria.

Examination of welds and fabricated members by eye, often aided by gauges and lighting, to check size, profile, and surface discontinuities. It is usually the first and most frequently applied inspection method.

A hand tool used to measure weld size, throat, leg length, undercut, and other features against acceptance criteria. It supports consistent visual inspection results.

A detailed drawing prepared by the fabricator that translates design drawings into specific member sizes, connections, and piece marks used in the shop. It is reviewed and approved before fabrication.

A drawing submitted to the owner's representative or engineer for review and acceptance before fabrication begins. It communicates the fabricator's interpretation of the design and any proposed connection details.

A unique identifier assigned to each fabricated member so it can be tracked through cutting, assembly, shipping, and erection. Marks link the physical piece to its drawing and inspection records.

The ability to link finished fabricated pieces back to their heat numbers, mill test reports, and original material certifications. It supports verification that specified material grades were used.

A document from the steel producer reporting the chemical composition and mechanical properties of a heat of material. Fabricators use it to confirm the material meets the specified grade.

A list of the components, shapes, plates, and quantities required to fabricate an assembly or project. It supports purchasing, cutting, and inventory planning.

A shop document specifying each piece to be cut, its dimensions, quantity, and material, derived from the bill of materials and shop drawings. It guides the cutting operation and reduces waste.

A diagram showing reporting relationships, departments, and lines of authority within the fabricator's organization. It clarifies who is responsible for production, quality, and safety functions.

The person responsible for maintaining the quality management system, overseeing inspection activities, and ensuring nonconformances are resolved. They typically report independently of production pressure.

A designated individual with authority to ensure the quality system is implemented and maintained and to report on its performance to top management. The role provides a clear point of accountability.

The person responsible for coordinating welding activities, including procedure qualification, welder qualification, and production welding control. They ensure welding work complies with the applicable code.

Documentation showing that an employee has completed required instruction and demonstrated competence for assigned tasks. It supports verification that personnel are qualified for their roles.

A record showing that a measuring or testing device was checked against a known standard and found accurate within a stated tolerance. It establishes confidence in inspection measurements.

Scheduled servicing and inspection of equipment such as welding machines, cranes, and cutting tables to prevent breakdowns and keep processes within specification. Activities and results are typically logged.

A record tracking the identity, condition, maintenance, and calibration status of shop equipment. It helps verify that machines used for fabrication and inspection remain fit for purpose.

A planned, independent review of a fabricator's own quality system to verify that procedures are followed and effective. Findings are documented and corrected through the corrective action process.

The practice of ensuring that only current, approved versions of drawings, procedures, and specifications are available at the point of use. Superseded documents are removed or clearly marked.

An ongoing effort to improve products, processes, and the quality system through measurement, feedback, and corrective action. It treats quality as a cycle rather than a one-time checkpoint.