1 Scope
This standard specifies the basic methods and technical requirements for the periodic inspection and evaluation of liquefied petroleum gas cylinders designed and manufactured according to "Liquefied Petroleum Gas Cylinders" (GB 5842) (hereinafter referred to as cylinders).
This standard is applicable to refillable cylinders which is used at normal environment temperature (-40~60) ℃ and whose nominal working pressure is 2.1MPa and nominal volume is less than or equal to 150L.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the dated versions apply to this standard. For undated references, the latest edition of the normative document (include all the amendments) is applicable to this document.
Contents
1 Scope
2 Normative References
3 Inspection Agencies, Period and Items
4 Inspection Preparation
5 Appearance Inspection and Evaluation
6 Inspection and Evaluation of Weld Joint
7 Inspection and Evaluation of Valve Seat
8 Wall Thickness Measurement
9 Volume Measurement (Supplemental Inspection)
10 Hydraulic Test
11 Inspection and Assembly of Cylinder Valve
12 Airtightness Test
13 Other Work
Appendix A (Informative) Methods for Measuring Depression, Pit, Gouge and Scratch Depth
Appendix B (Normative) Methods for Measuring the Cylinder Water Volume
Appendix C (Informative) Inspection Mark Ring
