1 Scope
This specification specifies the requirements for design of filed instrument installation in petrochemical industry, excluding the installation design of wire, cable, compensation conductor and instrument thermal insulation, heat tracing and the instrument in control room as well as analysis instrument, safety and control system.
This specification is applicable to the design of field instrument installation in petrochemical industry and for the newly-built, extended and rebuilt engineering in the factory making fuel and chemical products from coal.
2 Normative References
The following referenced documents are indispensable for the application of this specification. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 4075-2009 Sealed Radioactive Sources - General Requirements and Classification
GB 11806-2004 Regulations for the Safe Transport of Radioactive Material
GB 14052-1993 Radionuclide Gauges - Gauges Designed for Permanent Installation
GB 18871-2002 Basic Standards for Protection against Ionizing Radiation and for the Safety of Radiation Sources
GBZ 125-2009 Radiological Protection Requirements for Gauges Containing Sealed Radioactive Source
GBZ 128-2002 Specifications of Individual Monitoring for Occupational External Exposure
GBZ 114-2006 Radiological Protection Standards for Sealed Radioactive Sources and Container of Sealed γ Radiation Sources
3 Terms and Definitions
For the purpose of this specification, the following terms and definitions apply.
3.1
Environmental condition
The range of parameter values of surrounding environment required by function unit protection or normal work.
3.2
Operating limits
The range of operating conditions possibly bearable by device and not likely to cause permanent reduction of operating characteristics.
3.3
Ambient temperature
The temperature measured at typical location in the local environment (including the adjacent heating device) where the measurement and control devices are under normal operation, storage and transportation.
3.4
Vibration
The movement reciprocating and/or rotating periodically with basic frequency.
3.5
Process
The operation of making one or a series of physical conversion or chemical change.
3.6
Process measurement
Get process variable value by physical or chemical method.
3.7
Measuring sensor
The sensitive element used during measurement to convert the actual physical or chemical variable of the process to the signal easy to use or convert.
3.8
Device
The device, device combination or element combination used to realize intended function.
3.9
Meter
The device used to measure or indicate measured variable.
3.10
Measurement transducer
The variable device in physical or chemical state used to convert variable in physical or chemical state to the same or other properties for the convenience of further usage or treatment.
3.11
Transmitter
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
4.1 Installation Location
4.2 Process Connection
4.3 Impulse Line
4.4 Instrument Support
5 Temperature Measurement Instrument
5.1 Temperature Element Protective Well
5.2 Installation Requirement
6 Pressure Measurement Instrument
6.1 Tapping Location
6.2 Installation Requirement
7 Flow Measurement Instrument
7.1 General Requirement
7.2 Standard Throttle Device
7.3 Nonstandard Throttle Device
7.4 Target Flowmeter
7.5 Turbine Flowmeter
7.6 Positive Displacement Flowmeter
7.7 Electromagnetic Flowmeter
7.8 Vortex Flowmeter
7.9 Coriolis Mass Flowmeter
7.10 Thermal Mass Flowmeter
7.11 Ultrasonic Flowmeter
7.12 Rotameter
8 Level Measurement Instrument
8.1 General Requirement
8.2 Glass Level Gauge
8.3 Magnetic Float Level Gauge
8.4 Differential Pressure Level Gauge
8.5 External Float Level Gauge
8.6 Internal Float Level Gauge
8.7 Internal Ball Float Level Gauge
8.8 Magnetostrictive Level Gauge
8.9 Ultrasonic Level Gauge
8.10 Radioactive Level Instrument
8.11 Servo Level Gauge
8.12 Radar Level Gauge
8.13 Level Switch
9 Control Valve and On/Off Valve
9.1 Installation Location
9.2 Installation Dimension
9.3 Installation Orientation
9.4 Piping Design
Appendix A (Informative) Minimum Nominal Pressure of Connecting Flange
Appendix B (Informative) Flange Gasket and Fastener
Appendix C (Informative) Common Specification of Instrument Process Connection
Appendix D (Informative) Primary Block Valve Arrangement in Safety Protection Measuring
Appendix E (Informative) Tube and Pipe
Appendix F (Informative) Piping Expanding for Temperature Instrument Installation
Appendix G (Informative) Typical Installation Drawing of Temperature Instrument
Appendix H (Informative) Pressure Tapping Orientation
Appendix J (Informative) Typical Installation Drawing of Pressure Instrument
Appendix K (Informative) Piping Arrangement of PD Flowmeter for Custody Transfer
Appendix L (Informative) Typical Installation Drawing of Flow Throttle Device and Transmitter
Appendix M (Informative) Meter run Length of Standard Throttle Device
Appendix N (Informative) Typical Installation Drawing of Level Instrument
Appendix P (Informative) Typical Form of Standpipe of Level Instrument
Bibliography
Explanation of Wording in this Specification
