GB/T 14649-2025 Test method for marine auxiliary boiler property English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 47.020.20
CCS U 41
National Standard of the People's Republic of China
GB/T 14649-2025
Replaces GB/T 14649-2005
Test method for marine auxiliary boiler property
Issue date: 2025-08-29 Implementation date: 2026-03-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Test Methods
5.1 Thermal Performance Test
5.2 Safety Valve Test
5.3 Oil Supply Rate Test
5.4 Automatic and Manual Control Test
5.5 Flue Gas Temperature Measurement
5.6 Steam Humidity Measurement
5.7 Flue Gas Ringelman Blackness Measurement
5.8 Surface Temperature Measurement of Boiler Insulation Casing
5.9 Function Test of Valves and Accessories
5.10 Furnace Inspection
6 Test Data Recording and Processing
6.1 Test Data Recording
6.2 Data Processing**
Appendix A (Normative) Boiler Thermal Performance Test Methods
A.1 General Rules
A.2 Test Preparation
A.3 Test Requirements
A.4 Test Method
A.5 Test Report**
Appendix B (Normative) Saturated Steam Humidity Measurement Methods
B.1 General Provisions
B.2 Sampling of Steam and Boiler Water
B.3 Three Measurement Methods for Saturated Steam**
Appendix C (Normative) Boiler Performance Test Data and Results Recording Form
Appendix D (Normative) Boiler Heat Dissipation Loss
Test Method for Marine Auxiliary Boiler Property
1 Scope
This document specifies the general requirements, test methods, test data recording and processing for marine auxiliary boilers.
This document applies to the performance testing of water-tube and fire-tube boilers used on ships, with design pressure not exceeding 2.5 MPa, for natural circulation steam boilers with water as the working medium, and for hot water boilers where the medium outlet temperature does not exceed 120°C (hereinafter referred to as "boilers").
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, subsequent amendments (excluding corrigenda) or revisions to these documents do not apply. For undated references, the latest version of the document (including all amendments) applies.
GB/T 10180-2017 Thermal Performance Test Code for Industrial Boilers
CB/T 3863 Test Methods for Performance of Marine Boiler Fuel Oil Burners
CB/T 4428 Technical Conditions for Marine Auxiliary Boiler Control Equipment.
3 Terms and Definitions
This document has no terms and definitions to be specified.
4 General Requirements
4.1 The test items and frequency for boiler type tests, factory tests, and mooring (voyage) tests are listed in Table 1.
Table 1 Test Items and Frequency
4.2 Preparations before the test shall include:
a)Test outline;
b) General boiler drawing and system diagram;
c) Boiler user manual;
d) Relevant documentation for main accessories;
e) General burner drawing and user manual;
f) Control system manual and circuit diagram;
g) Test record forms.
4.3 The boiler proper, its supporting equipment and accessories shall have passed inspection.
4.4 The testing instruments and meters used for the test shall be within the validity period of their verification or calibration and be in good working condition.
4.5 The fuel used for the test shall be consistent with the fuel selected for the boiler.
5 Test Methods
5.1 Thermal Performance Test
5.1.1 The specific method for boiler thermal performance testing shall be conducted per Appendix A. The testing duration under various loads is specified in Table 2.
Table 2 Testing Duration under Various Loads
5.2 Safety Valve Test
5.2.1 Safety valve popping and closing tests shall be performed during boiler hot testing by observing the boiler steam pressure gauge and recording the popping and closing pressure values of the safety valve.
5.2.2 Safety valve steam sealing test shall be conducted during boiler hot testing by closing the steam valve while maintaining 100% load combustion and safe water level. Observe and record the boiler steam pressure value within the specified time after the safety valve opens.
5.2.3 Safety valve manual pull test shall be performed during boiler hot testing by manually pulling the opening handle of the steam safety valve to observe whether the valve pops or closes.
5.3 Oil Injection Test
5.3.1 The oil injection test method for boiler burners shall be conducted per CB/T3863.
5.4 Automatic/Manual Control Test
5.4.1 The automatic/manual control test methods for boilers shall be conducted per CB/T4428.
5.5 Flue Gas Temperature Measurement
5.5.1 Flue gas temperature measurement shall be performed per A.4.6.
5.6 Steam Humidity Measurement
5.6.1 Steam humidity measurement shall be conducted per Appendix B.
5.7 Flue Gas Ringmann Blackness Measurement
5.7.1 Under rated operating conditions, boiler flue gas blackness shall be measured by visual comparison with the Ringmann (smoke concentration chart).
5.8 Insulated Packaging Surface Temperature Measurement
5.8.1 Under rated operating conditions, measure the surface temperature of the insulated packaging using a spot thermometer. Measurement points shall be located on the shell at least 300mm away from manholes, handholes, burner connection ports, etc.
5.9 Valve and Accessory Functionality Test
5.9.1 Manually open and close blowdown valves, steam valves, soot blowers, and water gauge blowdown valves at boiler operating pressure to observe whether they operate smoothly.
5.10 Furnace Inspection
5.10.1 After the boiler combustion test, open the furnace inspection port or burner and visually inspect the furnace for coking.
Test Data Acquisition and Processing
6.1 Test Data Acquisition
6.1.1 Upon completion of the tests, all recorded data shall be calculated, organized, and entered into Tables C1 to C3 in Appendix C.
Standard
GB/T 14649-2025 Test method for marine auxiliary boiler property (English Version)
GB/T 14649-2025 Test method for marine auxiliary boiler property English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 47.020.20
CCS U 41
National Standard of the People's Republic of China
GB/T 14649-2025
Replaces GB/T 14649-2005
Test method for marine auxiliary boiler property
Issue date: 2025-08-29 Implementation date: 2026-03-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Test Methods
5.1 Thermal Performance Test
5.2 Safety Valve Test
5.3 Oil Supply Rate Test
5.4 Automatic and Manual Control Test
5.5 Flue Gas Temperature Measurement
5.6 Steam Humidity Measurement
5.7 Flue Gas Ringelman Blackness Measurement
5.8 Surface Temperature Measurement of Boiler Insulation Casing
5.9 Function Test of Valves and Accessories
5.10 Furnace Inspection
6 Test Data Recording and Processing
6.1 Test Data Recording
6.2 Data Processing**
Appendix A (Normative) Boiler Thermal Performance Test Methods
A.1 General Rules
A.2 Test Preparation
A.3 Test Requirements
A.4 Test Method
A.5 Test Report**
Appendix B (Normative) Saturated Steam Humidity Measurement Methods
B.1 General Provisions
B.2 Sampling of Steam and Boiler Water
B.3 Three Measurement Methods for Saturated Steam**
Appendix C (Normative) Boiler Performance Test Data and Results Recording Form
Appendix D (Normative) Boiler Heat Dissipation Loss
Test Method for Marine Auxiliary Boiler Property
1 Scope
This document specifies the general requirements, test methods, test data recording and processing for marine auxiliary boilers.
This document applies to the performance testing of water-tube and fire-tube boilers used on ships, with design pressure not exceeding 2.5 MPa, for natural circulation steam boilers with water as the working medium, and for hot water boilers where the medium outlet temperature does not exceed 120°C (hereinafter referred to as "boilers").
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, subsequent amendments (excluding corrigenda) or revisions to these documents do not apply. For undated references, the latest version of the document (including all amendments) applies.
GB/T 10180-2017 Thermal Performance Test Code for Industrial Boilers
CB/T 3863 Test Methods for Performance of Marine Boiler Fuel Oil Burners
CB/T 4428 Technical Conditions for Marine Auxiliary Boiler Control Equipment.
3 Terms and Definitions
This document has no terms and definitions to be specified.
4 General Requirements
4.1 The test items and frequency for boiler type tests, factory tests, and mooring (voyage) tests are listed in Table 1.
Table 1 Test Items and Frequency
4.2 Preparations before the test shall include:
a)Test outline;
b) General boiler drawing and system diagram;
c) Boiler user manual;
d) Relevant documentation for main accessories;
e) General burner drawing and user manual;
f) Control system manual and circuit diagram;
g) Test record forms.
4.3 The boiler proper, its supporting equipment and accessories shall have passed inspection.
4.4 The testing instruments and meters used for the test shall be within the validity period of their verification or calibration and be in good working condition.
4.5 The fuel used for the test shall be consistent with the fuel selected for the boiler.
5 Test Methods
5.1 Thermal Performance Test
5.1.1 The specific method for boiler thermal performance testing shall be conducted per Appendix A. The testing duration under various loads is specified in Table 2.
Table 2 Testing Duration under Various Loads
5.2 Safety Valve Test
5.2.1 Safety valve popping and closing tests shall be performed during boiler hot testing by observing the boiler steam pressure gauge and recording the popping and closing pressure values of the safety valve.
5.2.2 Safety valve steam sealing test shall be conducted during boiler hot testing by closing the steam valve while maintaining 100% load combustion and safe water level. Observe and record the boiler steam pressure value within the specified time after the safety valve opens.
5.2.3 Safety valve manual pull test shall be performed during boiler hot testing by manually pulling the opening handle of the steam safety valve to observe whether the valve pops or closes.
5.3 Oil Injection Test
5.3.1 The oil injection test method for boiler burners shall be conducted per CB/T3863.
5.4 Automatic/Manual Control Test
5.4.1 The automatic/manual control test methods for boilers shall be conducted per CB/T4428.
5.5 Flue Gas Temperature Measurement
5.5.1 Flue gas temperature measurement shall be performed per A.4.6.
5.6 Steam Humidity Measurement
5.6.1 Steam humidity measurement shall be conducted per Appendix B.
5.7 Flue Gas Ringmann Blackness Measurement
5.7.1 Under rated operating conditions, boiler flue gas blackness shall be measured by visual comparison with the Ringmann (smoke concentration chart).
5.8 Insulated Packaging Surface Temperature Measurement
5.8.1 Under rated operating conditions, measure the surface temperature of the insulated packaging using a spot thermometer. Measurement points shall be located on the shell at least 300mm away from manholes, handholes, burner connection ports, etc.
5.9 Valve and Accessory Functionality Test
5.9.1 Manually open and close blowdown valves, steam valves, soot blowers, and water gauge blowdown valves at boiler operating pressure to observe whether they operate smoothly.
5.10 Furnace Inspection
5.10.1 After the boiler combustion test, open the furnace inspection port or burner and visually inspect the furnace for coking.
Test Data Acquisition and Processing
6.1 Test Data Acquisition
6.1.1 Upon completion of the tests, all recorded data shall be calculated, organized, and entered into Tables C1 to C3 in Appendix C.
