1 Scope
This part of GB/T 18443 specifies the basic requirements for test environment, test equipment, measured piece and test medium, test items and sequence, data processing, test record and test report in test for performance of vacuum insulated cryogenic equipment.
This part is applicable to the test for performance of vacuum insulated cryogenic equipment not used to store and transport liquid hydrogen medium; other equipment may also refer to the provisions of this part.
2 Normative References
The following normative documents contain provisions which, through reference in this part of GB/T 18443, constitute provisions of this part. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB/T 18443.2 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 2: Vacuum Degree Measurement
GB/T 18443.3 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 3: Leak Rate Measurement
GB/T 18443.4 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 4: Leak-outgassing Rate Measurement
GB/T 18443.5 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 5: Static Evaporation Rate Measurement
GB/T 18443.6 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 6: Heat-leak Rate Measurement
GB/T 18443.7 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 7: Holding Time Measurement
GB/T 18443.8 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 8: Volume Measurement
JB/T 8105.1 Rubber Seal Connections of Vacuum Gauges
JB/T 8105.2 Metallic Seal Connections of Vacuum Gauges
3 Terms and Definitions
For the purpose of this part, the following terms and definitions apply.
3.1
Interspace
The enclosed space between the inner vessel and the outer shell.
3.2
Vacuum insulation
A general term of thermal insulation mode by vacuuming the interspace which is filled or not filled with thermal insulation materials. Thermal insulation material refers to powder, fiber, multilayer and multiple-screen in multilayer material.
3.3
Vacuum insulated cryogenic equipment
A general term of equipment such as cryogenic pressure vessel, cryogenic atmospheric pressure vessel, vacuum insulated cryogenic welded gas cylinder and vacuum insulated pipe and fittings with vacuum insulation structure.
3.4
Standard ambient condition
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
Appendix A (Normative) Determination for Heat-leak Rate and Static Evaporation Rate of Actually Stored Medium at Standard State
Appendix B (Informative) Test Items and Sequence
Appendix C (Informative) Test Report for Performance of Vacuum Insulated Cryogenic Equipment
