About Weifang screw air compressor quality assurance
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5 FAQs about [Weifang screw air compressor quality assurance]
Who conducts inspections & inspections of screw compressors?
1-3-2 The examinations and inspections shall principally be carried out by the staffs of the quality control and assurance of screw compressor manufacture, and may be, if required, witnessed or observed by Purchaser, Client or appointed third-party inspection agent.
What is a witness in screw compressor testing?
Such witness or observation in Screw Compressor Testing shall, in principle, be effected in a range not opposing or affecting manufacturing processes. The term witnessed means that a hold shall be applied to the production schedule and that the inspection or test will be conducted with the purchaser or his agent in attendance.
What does observed mean in a screw compressor inspection?
The term observed means that the purchaser requires notification of the timing of the inspection or test. The screw compressor testing or inspection is performed as scheduled, however, if the purchaser or his agent is not present the vendor can proceed to the next step.
Can a compressor casing be repaired without customer approval?
The compressor casing shall be subjected to magnetic particle examination for repair welded portions based of approved procedure. Repairs and Repair Welds The repair will be performed without Customer's approval except the below 'major' defect: (1) It entails the removal of more than 50% of wall thickness.
What clearances should be measured when assembling a compressor?
2-9-1 Compressor The following clearances shall be measured to check on assembling the compressor: 2-9-2 Rotor clearance (1) Rotor setting clearance ratio shall be measured. (2) Inter-lobe clearances shall be measured.