As a supplier of pressure vessels constructed in accordance with Section VIII, Division I of the ASME Code, our experience dates back to 1968 when the company was granted the use of the "U" stamp for unfired pressure vessels.
Product quality must be built-in; it cannot be inspected in. James Machine Works is committed to providing a product conforming to the highest level of quality specified or implied by our customers.
This policy is implemented by rigid adherence to an approved and documented quality control system enforced by top management and does not vary with the character of the user.
Quality and production scheduling are correlative, but quality control administration is completely independent of production influence and is solely responsible to management.
Proper order clearance, exacting preparation of engineering design, material requisition, transmission of fabricating information, and proficient in-progress inspection and test records are the requisite of quality management and product quality control. All such quality assurance is maintained within our organization and is outlined in our formal and "working" Quality Control manual.
In-process inspection with designated "hold" points is begun at start of fabrication and continues with production through completion. This inspection includes check of material identification, cutting forming, fit-up, layout, and welding. Non-destructive examination is included during fabrication and upon completion.
Multiple in-process inspections are performed. Magnetic particle, ultrasonic, and radiography examinations are sub-contracted to independent, qualified, and approved NDE companies and certtified laboratories.
Final dimensional and visual inspections are made upon completion of fabrication by Quality Control inspectors.
Pressure vessels constructed under the guidelines of the ASME Code are subjected to authorized third party inspection. JMW presently has a contract with the HSB, CT as the third party inspection agency.
Upon completion of fabrication the vessel is subjected to a hydrostatic test at one and one-half the maximum allowable working pressure at ambient temperature. All testing is performed in accordance with Section VIII, Division 1 of the ASME Code. A vessel data sheet, Form U-1, is completed and signed off as meeting all Code compliances by the Quality Control Department and the authorized third party inspector.
If surface preparation and surface painting is a requirement of the specifications, the vessel enters the painting facility to be grit blasted and coated per specifications. Surface blasting and coating is monitored for non-contaminated dry air for blasting, humidity, and dew point for coating profiles are monitored for blasted surfaces and dry finish thickness of coatings are monitored for required millage.