A review of the related quality control manual gate valves stainless steel
Stainless steel manual review of the related quality control valve and manual gate valves according to the specification of stainless steel parts and equipment should be accord with the requirement of test about quality control of pressure and temperature.
: measuring and test equipment used to check the material or other equipment, test and inspection equipment within the prescribed time interval according to the manufacturer's documentation and relevant industry standards of recognition on a regular basis, control, calibration and adjustment, to keep the accuracy according to the requirements of this specification.
Equipment size measuring equipment shall be according to manufacturer's written specification for control and calibration, to keep the manufacturers specification requires precision.
Stainless steel manual valve pressure measuring equipment: 1.
Type and precision of test pressure measuring equipment should be a pressure gauge and pressure sensors, the accuracy at least shall be the nominal full scale & plusmn;
The size and range should be in the range of pressure gauge of the pressure - 25%
Measuring pressure within 75% range.
Should use a standard pressure measurement equipment or dead weight tester, in 25%, 50% and 75% of the scale, to calibrate pressure measurement equipment on a regular basis.
Program: the calibration interval should be according to the degree of repeatability and accuracy of using or use to determine, should be part of the manufacturer procedure.
Stainless steel manual valve temperature measuring equipment: when using temperature chart, temperature range should be able to indicate the temperature fluctuations.
The general requirements of quality control: all the detailed rules for the quality control should be file, and should include the appropriate methods and acceptance criteria.
Quality control rules: do not conform to the item material manufacturer shall have a control is not in conformity with the technical conditions and the manufacturer written specification of materials, parts and products of written procedures.
Weld repairs: manufacturers all weld repairs must be used process was written test methods and acceptance criteria.
The quality control of specific products and parts: 1.
Closed closed bolt onto written specifications conform to the specifications and the manufacturer's requirements.
Other parts should be on other parts, which can identify they should conform to the requirements of this specification and the manufacturer written specification.
After assembly equipment all the equipment after assembly requirements of series number.
Record requirements: 1.
Welding procedure specification.
Welding procedure qualification records.
Welding qualification record.
Stainless steel gate valve nondestructive testing personnel qualification record manually.