Quality Assurance
DCI recognizes the importance of in-factory testing prior to shipment. These are a few of the quality assurance steps we take to ensure your satisfaction.
PMI - Positive Material Identification
DCI implements Positive Material Identification (PMI) to assure material traceability of components built into our product. Our PMI procedure includes checking the materials as received, and also stipulates checks on the shop floor to ensure that the documentation remains intact during the manufacturing process. A customer can also request a final PMI of the finished product.To do this DCI is utilizing the latest technology, NITON® X-Ray Fluorescence (XRF) hand-held alloy analyzers, to perform the analysis.
CIP Pre-Validation
Our custom designed and built CIP (Clean-In-Place) system includes a PLC for automatic control of flow, pressure and temperature. Timed bursts and other customer test requirements can be preprogrammed. A process recorder provides a printout of the parameters for each test.
Dye Penetrant Testing
This test is used for location/identification of surface defects, detection of cracking in welded joints or of fatigue cracking in stressed materials.The surface of the material being tested is coated with a penetrant which contains a dye. The penetrant will seep into any open areas on the material. After the excess penetrant is cleaned from the surface of the sample, a developer is applied. The developer lifts the penetrant out of the defect, and the dye stains the developer, creating an outline of the defect or crack.
Hydro-Testing
Method of testing a vessel for leaks by filling with water and applying pressure.
Head Presses
DCI offers tank heads (sometimes referred to as lids, caps or covers) in alloys including stainless steel, carbon steel, Hastelloy®, Inconel® and aluminum. Designs available include flanged and dished; 80/10; 2:1 elliptical; flat flanged and conical.Our heads are designed and fabricated using unique customer specifications. Each customer-built head is manufactured meeting customer standards and specifications to ensure quality and commitment to DCI's clients.
Material Weld Finishes
DCI offers several standard finishes which can be applied to meet your application requirements:- Electroplishing
- As - Welded
- Glass Bead
- Cleaned
- 80 Grit
- 120 Grit
- 150 Grit
- 180 Grit
- 240 Grit
- 320 Grit
Heat Transfer Surface Designs
- Plug Welded Dimple Jackets
- Laser Welded Dimple Jackets (Inflated)
- Half-Pipe Jackets
- Conventional Jackets
- Vessel Internal Coils
Electropolishing
Combining DCI electropolishing with our established procedures of material selection, controlled fabrication techniques and continues quality control, assures superior craftsmanship. Vessels with capacities to 30,000 gallons can be electropolished at DCI.Consider the benefits of electropolishing:
- Removes metallic and non-metallic surface inclusions
- Reduces the exposed product contact surface area
- Improves surface cleanability
- Improves corrosion resistance and life expectancy of vessel
- Provides passive product contact surfaces