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GB/T 14649-2025: Test method for marine auxiliary boiler property
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 14649-2025	English	399	Add to Cart	4 days [Need to translate]	Test method for marine auxiliary boiler property
GB/T 14649-2005	English	369	Add to Cart	3 days [Need to translate]	Test method for marine auxiliary boiler property
GB/T 14649-1993	English	319	Add to Cart	3 days [Need to translate]	The properey test rule for marine auxiliary boiler unit

GB/T 14649-2025: Test method for marine auxiliary boiler property

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ICS 47.020.20 CCSU41 National Standards of the People's Republic of China Replaces GB/T 14649-2005 Test methods for performance of marine auxiliary boilers Published on 2025-08-29 Implemented on 2026-03-01 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of Contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4.General Requirements 1 5.Test Methods 2 5.1 Thermal Testing 2 5.2 Safety Valve Test 3 5.3 Fuel Injection Quantity Test 3 5.4 Automatic and manual control tests 3 5.5 Smoke Exhaust Temperature Measurement 3 5.6 Steam humidity measurement 3 5.7 Measurement of Ringelmann Smoke Density 3 5.8 Measurement of the surface temperature of the boiler insulation packaging shell 3 5.9 Valve and accessory performance test 3 5.10 Furnace Inspection 3 6.Experimental Data Acquisition and Processing 3 6.1 Experimental Data Recording 3 6.2 Data Processing 3 Appendix A (Normative) Boiler Thermal Testing Methods 6 A.1 General Rules 6 A.2 Experimental Preparation 6 A.3 Test Requirements 6 A.4 Test Method 7 A.5 Test Report 8 Appendix B (Normative) Method for Determining the Humidity of Saturated Steam 9 B.1 General Provisions 9 B.2 Collection of Steam and Boiler Water Samples 9 B.3 Three methods for determining saturated steam 10 Appendix C (Normative) Boiler Performance Test Data and Result Recording Table 12 Appendix D (Normative) Boiler Heat Loss 15

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document supersedes GB/T 14649-2005 "Test Methods for Performance of Marine Auxiliary Boilers". This document is consistent with GB/T 14649-2005. Aside from structural adjustments and editorial changes, the main technical changes are as follows. ---The scope of application has been changed (see Chapter 1, Chapter 1 of the.2005 edition); ---The general requirements for pre-experiment data preparation have been revised (see 4.2, 3.2 in the.2005 edition); ---The thermal test requirement at 110% rated load has been removed (see 4.1 in the.2005 edition); ---Added explanations regarding the thermal testing of the exhaust gas portion of waste gas boilers and combined fuel oil waste gas boilers (see 5.1); ---The test methods for automatic and manual boiler controls have been revised (see 5.4, 4.4 in the.2005 version); ---The formula for calculating the positive balance thermal efficiency of saturated steam boilers has been modified (see 6.2.4, 5.2.4 in the.2005 version); ---The relevant content of the General Rules for Boiler Thermal Testing Methods has been revised (see A.1, A.1 of the.2005 edition); ---The requirements for preparation work for boiler thermal testing have been revised (see A.2,.2005 edition of A.2); ---The requirements for boiler thermal testing have been revised (see A.3,.2005 edition of A.3); ---Added requirements for pressure gauge range selection when measuring pressure in boiler feedwater and steam systems (see A.4.5); ---Added requirements for boiler thermal test reports (see A.5); ---Recommended values for the inner diameter of the steam sampling tube when measuring saturated steam humidity have been added (see B.2.2); ---The sampling and measurement cycle for boiler water and steam during the test has been changed (see B.2.6,.2005 version of B.2.6); ---A method for determining the electrode constant in the conductivity method for measuring the humidity of saturated steam has been added (see B.3.3); ---The test content for the steam shielding of the safety valve has been added to the boiler safety valve test result record table (see Table C.3); ---Added requirements related to boiler heat loss (see Appendix D). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Marine Machinery (SAC/TC137). This document was drafted by. Zhangjiagang Hailu Shazhou Technology Co., Ltd., China Railway Construction Port & Navigation Bureau Group Co., Ltd., and Qingdao Kaineng Environmental Protection Technology Co., Ltd. Technology Co., Ltd., Nantong Ocean Shipping Equipment Co., Ltd., China State Shipbuilding Corporation Comprehensive Technology and Economic Research Institute, Yueyang Yuanda Thermal Energy Equipment Co., Ltd., Qingdao Marine Boiler Factory Co., Ltd. The main drafters of this document are. Huang Liping, Wang Jinyang, Wei Xianhua, Fu Guanpeng, Zhang Jihai, Wang Bo, Fang Guodong, Zhang Fan, Ma Junyi, and Yang Yubo. Wei Huaxing, Lu Weidong, Xiao Bin, Kang Minghong, Xiao Guangxing, Wang Qi, Liu Sheng, Guan Yuling, Chen Weiyu. This document was first published in.1993, revised for the first time in.2005, and this is the second revision. Test methods for performance of marine auxiliary boilers 1.Scope This document specifies the general requirements, test methods, and data acquisition and processing for performance testing of marine auxiliary boilers. This document applies to natural circulation steam boilers with a design pressure not exceeding 2.5 MPa and a working medium of water, as well as boilers with a medium outlet temperature not exceeding [a certain value]. Performance test of hot water boilers (hereinafter referred to as boilers) with temperatures exceeding 120°C.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 10180-2017 Test Procedure for Thermal Performance of Industrial Boilers CB/T 3863 Test Methods for Performance of Oil Burners for Marine Boilers CB/T 4428 Technical Specifications for Marine Auxiliary Boiler Control Equipment 3.Terms and Definitions This document does not contain any terms or definitions that need to be defined. 4 General Requirements 4.1 The items and number of tests for the type test, factory test and mooring (sea) test of the boiler are shown in Table 1. Table 1 Test Items and Number of Tests Test Project Number of trials Type test, factory test, mooring (sea) test Thermal Experiment 1 - safety valve Take-off, closing Screen Manual pull Fuel injection quantity 3 2 - Automatic control Water supply Combustion process Pressure (for steam boilers only) Temperature (for hot water boilers only) Security Protection ...