Crown Technical Systems Quality Assurance Program is designed to provide a continuous method
of designing and manufacturing products that
meet the requirements of its customer specifications.
The QA System is compliant with ISO 9001 and is flexible and effective to meet our needs. Inspection systems follows MIL-I-45208A and calibration systems mirror MIL-STD-45662. Only calibrated tools and measuring equipment are used.
As a minimum, the following types of inspections are performed:
RECEIVING INSPECTION
Receiving inspection of incoming parts is performed on the basis of the Quality Clauses that are marked on the purchase order. Standard and simple parts that require either a part number check or the verification of some basic property of the part is performed by the receiving inspector. Purchase orders for parts that require engineering expertise to establish its correctness are coded so that the engineer in conjunction with the receiving inspector verifies if the part is acceptable.
WORK ORDERS
All jobs that are released to the floor are accompanied by Work Orders that have been thoroughly reviewed with respect to customer requirements. Specific customer requirements including wire type, wire size, lug type, wire markers etc. are identified on the work order. All work orders are accompanied by Bills of Materials and stamped drawings. Drawings are stamped to assure that the correct revision is released.
IN-PROCESS INSPECTION
Sheet metal parts are subject to dimensional checks and physical verification of the workmanship including welding, before the part is accepted and sent to paint. No sharp edges or any other indication of poor quality is acceptable. Paint inspection is performed to establish paint quality , thickness, color, hardness and certification.
After the initial assembly of panels, cubicles or building is completed, an inspection is performed to ensure correct parts are installed.
Wire men are encouraged to flag and resolve any drawing discrepancy. Engineers are required to red-line prints when a mistake is detected. Wiring inspection reviews quality of wiring, presence of service loops, correctness of lugs and lugging, etc.
Continuity checking is performed to ensure correctness of wiring.
FINAL INSPECTION
Final inspection allows for a last careful look at the product prior to shipment. Final inspections are performed using a checklist consisting of 20-30 items. The following items are typically covered during final inspection:
- Verification of parts against BOM
- Installation of and tightness of all hardware
- Installation of all covers
- Cleanliness of equipment shipping out
- Verification of shipper
- Verification of As-built drawings
- Verification of all spare parts and manuals
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