1 Scope
1.1 This standard specifies the basic requirements which shall be complied with by the combustible gas detection and alarm system in the petroleum and natural gas engineering.
1.2 This standard is applicable to combustible gas detection and alarm design, equipment selection, installation of newly-built, expanded and renovated onshore petroleum and gas field engineering, petroleum and gas storing and transporting engineering and onshore terminal engineering for offshore petroleum and gas field as well as the management of the engineering above.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Determination of Detection Point
5.1 No Enclosed Area
5.2 Enclosed Area
5.3 Storing and Transporting Facilities
6 Detection and Alarm System
6.1 Technical Performance of the System
6.2 Selection of the Detector
6.3 Selection of Indication Apparatus
7 Installation of Detector and Indication Apparatus
7.1 Installation of Fixed Detector
7.2 Installation of Indication Apparatus and Site Alarm Instrument
8 Inspection and Maintenance
9 Maintenance and Calibration
9.1 General Requirements
9.2 Calibration
Appendix A (Informative) Property List of Common Combustible Gas and Vapor used in Petroleum and Natural Gas Engineering
Appendix B (Informative) Examples of Process Plant where the Volatile Fire Hazard Material likely to Exist in Petroleum and Natural Gas Engineering
Appendix C (Informative) Explanation of Provisions
