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GB/T 24959-2019Refrigerated light hydrocarbon fluids - General requirements for temperature measurement system in cargo tanks of LNG carrier (English PDF)

冷冻轻烃流体液化天然气运输船货舱内温度测量系统一般要求

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

June 4, 2019

Implementation date

January 1, 2020

Scope

GB/T 24959-2019 is the English-translated version of 冷冻轻烃流体液化天然气运输船货舱内温度测量系统一般要求.

GB/T 24959-2019 is the Chinese standard "Refrigerated light hydrocarbon fluids - General requirements for temperature measurement system in cargo tanks of LNG carrier".

Its scope clause reads: This standard specifies the basic requirements for a temperature measurement system for the measurement of clinker trade in ships. This standard applies to the operation and maintenance of temperature measurement systems used in cargo tanks on LNG carriers.

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Document preview — GB/T 24959-2019

National Standard of the People's Republic of China

ICS: 75.060
Classification: E 24

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 Security measures
4.1 Basic requirements
4.2 Equipment Protection Measures
5 Performance requirements
5.1 Temperature sensor
5.2 Installation
5.3 Routine Maintenance and Certification Requirements
5.4 Requirements for preventing faults
5.5 Dynamic Response
5.6 measurable range
5.7 Data Processing and Reporting
5.8 Cargo tank temperature change compensation
5.9 Sealing, safety and opening
5.10 Redundancy
5.11 Data Communication
5.12 indicating device requirements
5.13 Insulation resistance
5.14 Environmental conditions and power supply allowable fluctuations
6 Test Requirements
6.1 Test before installation
6.2 Post-installation test
6.3 Inspection during the use period
7 Verification requirements
7.1 Basic requirements
7.2 Cycle verification method
7.3 Cycles for subsequent verification and in-use inspections
7.4 ATT record
8 Accuracy requirements
8.1 Total error calculation
8.2 Total error requirement range
8.3 resolution
9 Gas Hazardous Area Instrument Requirements
Appendix A (informative) Structural changes in this standard compared to ISO 8310.2012

1 Scope

This standard specifies the basic requirements for a temperature measurement system for the measurement of clinker trade in ships.

This standard applies to the operation and maintenance of temperature measurement systems used in cargo tanks on LNG carriers.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB 3836.1 Explosive atmosphere - Part 1. General requirements for equipment (GB 3836.1-2010, IEC 60079-0.2007,

MOD)

Explosive atmospheres - Part 2. Equipment protected by flameproof enclosure "d" (GB 3836.2-2010, IEC 60079-1.

2007, MOD)

GB 3836.3 Explosive atmosphere - Part 3. Equipment protected by an increased safety "e" (GB 3836.3-2010, IEC 60079-7.

2006, IDT)

Explosive atmospheres - Part 4. Equipment protected by intrinsically safe "i" (GB 3836.4-2010, IEC 60079-

11.2006, MOD)

GB/T 3836.5 Explosive atmosphere - Part 5. Equipment protected by a positive pressure enclosure "p" (GB/T 3836.5-2017,

IEC 60079-2.2007, MOD)

GB/T 3836.6 Explosive atmosphere - Part 6. Equipment protected by liquid immersion "o" (GB/T 3836.6-2017,

IEC 60079-6.2015, MOD)

GB/T 3836.7 Explosive atmosphere - Part 7. Equipment protected by sand-filled "q" (GB/T 3836.7-2017,

IEC 60079-5.2015, MOD)

GB/T 3836.11 Explosive atmospheres - Part 11. Methods and data for the classification of gas and vapour properties (GB/T 3836.11-2017, IEC 60079-20-1.2010, IDT)

GB 3836.14 Explosive atmospheres - Part 14. Classification of explosive atmospheres (GB 3836.14-2014,

IEC 60079-10-1.2008, IDT)

GB/T 3836.24 Explosive atmosphere - Part 24. Equipment protected by special type "s" (GB/T 3836.24-2017,

IEC 60079-33.2012, MOD)

GB/T 5332 Test method for ignition temperature of flammable liquids and gases (GB/T 5332-2007, IEC 60079-4. 1975, IDT)

GB/T 10250 Electromagnetic compatibility of marine electrical and electronic equipment (GB/T 10250-2007, IEC 60533.1999, IDT)

GB/T 16839.1 Thermocouple Part 1. Electromotive force specifications and tolerances (GB/T 16839.1-2018, IEC 60584-1.

2013, IDT)

GB/T 16839.2 Thermocouples Part 2. Tolerances (GB/T 16839.2-1997, IEC 60584-2. 1982, IDT)

GB/T 17214.1 Industrial process measurement and control devices - Working conditions - Part 1 . climatic conditions (GB/T 17214.1-1998,

IEC 60654-1.1993, IDT)

GB/T 17214.2 Working conditions of industrial process measuring and control devices - Part 2. Power (GB/T 17214.2-2005,

GB/T 22724 | GB/T 20368 | GB/T 26978 | GB/T 24964 | GB/T 24963 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

GB 3836.1 · GB 3836.1-2010 · IEC 60079 · GB 3836.2-2010 · GB 3836.3 · GB 3836.3-2010 · GB 3836.4-2010 · IEC 60533.1999 · IEC 60584 · GB/T 16839.2 · GB/T 16839.2-1997 · IEC 60654

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