Ventilation and Central Air Conditioning Equipment (Floor Convector, Vav/Cav, Heat Recovery Device, Cellular Aspirator, Air Damper, etc.), Air Handling Units Manufacturing Controls and Product Inspections Manufacturing and Product Inspections; It is determined whether the measurement quality or performance of a product, semi-finished product, part or raw material complies with predetermined specifications.
At various stages of manufacturing;
1. Performance tests,
2. Life tests,
3. It is done by measuring compliance with specifications.
Operational Sorting: Defective parts that arise due to inadequacy of manufacturing methods or machines are identified and separated. There is no attempt to correct the situation at that moment.
Corrective Sorting: Defective parts that occur due to avoidable errors such as workmanship and inspection frequency are detected. Immediate intervention can be made to eliminate error sources.
Acceptance sampling: It is done at the raw material entry, manufacturing or entry to the product warehouse, and the group is rejected or accepted according to the results. Corrective decision is not available at that time.
Control sampling: If negative results are obtained in the sampling carried out during the manufacturing stages, immediate action is taken to correct the error caused by the machine or worker.
Sampling Techniques
Rational Sampling: It is the ideal sampling technique, samples are taken under uniform conditions.
Random Sampling: It is used when the process is under the influence of many factors with complex relationships between them.
Staged Sampling: When it comes to taking samples from parts coming from different sources, that is, it is ensured that each source is represented in the same way in the sample group.
-Technical documents, standards and technical drawings regarding the product and customer specifications, if any, are provided by the customer.
-The Technical Manager examines the documents and determines the intermediate control steps that need to be carried out in accordance with the scope.
The customer is informed about the documents, certificates, reports, etc. that will be requested from them during the manufacturing process.
-The customer is informed about the determined intermediate control steps and the estimated dates of the inspection steps are determined jointly with the customer on the inspection plan.
-The technical manager informs the inspection engineer who will perform the inspection about the scope and steps of the inspection and forwards the relevant technical documents to the inspection engineer.
-Before the inspection, the inspection engineer takes with him the relevant documents and relevant measuring instruments required by the scope of the inspection. The measuring instruments used are recorded in the device tracking list.
-If a subcontractor will be used during the manufacturing phase, this information must be notified to the Inspection officer in advance.
Controls of subcontracted production are carried out at the subcontractor's site.
It is the customer's responsibility to inform the subcontractor about these controls.
-Controls of the production process include the following stages:
- Examining the technical documents and drawings provided by the customer, evaluating the process stages during manufacturing and determining the processes on how these operations will be carried out.
-Preliminary studies carried out by the company regarding subcontractors and suppliers, if a subcontractor or supplier will be used, before production begins.
Material control: Checks that the material to be used for manufacturing is suitable for the project and meets the relevant standards and requirements, and if available and necessary, control of the material certificate.
Control of manufacturing intermediate processes: Checking the suitability of the parts after cutting in terms of equipment and dimensions to the project before fixed connections are made.
-Dimensional and visual checks after the fixed connection process.
-If there are existing destructive and non-destructive examinations, accompanying these examinations.
-Accompanying the performance of processes such as heat treatment, etc. related to the product.
-Control of the final state of the product. (Paint, safety equipment, labeling, etc.)
-If there are existing tests regarding the product, accompanying these tests
Control and approval of quality records kept regarding the processes listed above
-The inspection engineer checks that the necessary occupational safety measures have been taken before starting the checks at the customer site.
-In the event that measuring instruments provided by the customer will be used during the inspection, the calibration certificate of the relevant measuring instrument is checked and, if possible, the verification of the measuring device is accompanied.
-Measurements, controls, etc. made during the inspection are noted by the inspection engineer.
-The inspection engineer evaluates the compliance of the control results with the relevant standards, directives, laws and regulations and states them in the inspection report. If there are any negativities it finds, it states these negativities with their reasons in its report.
-The report prepared by the inspection engineer is submitted to the Technical Manager for approval. The inspection report, after the necessary examinations and checks by the technical manager, is approved and delivered to the customer by the cargo company.
-If the negativities recorded during the inspection are eliminated by the customer, an interim control not specified in the inspection plan is carried out and it is determined that the nonconformity has been eliminated and the inspection report is revised.
-At the end of all inspection steps specified in the inspection plan, the inspection engineer creates the final inspection report summarizing the inspection reports created for each inspection step and submits it to the technical manager for approval.
The technical manager examines, checks and approves the final inspection report by comparing it with the interim inspection reports. The final inspection report is delivered to the customer via the cargo company.
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