This standard is drafted in accordance with rules in GBlT 1. 1-2009.
This standard is proposed and managed by the Railway Industry Diesel Locomotives Standardization Technical Committee.
This standard is drafted by China CNR Group Dalian Locomotive Research Institute， Tangshan Railway Vehicle Co.， Ltd.， Qiqihar Railway Rolling Stock Co.， Ltd.， CSR Zhuzhou Electric Locomotive Co.， Ltd.， and CSR Qishuyan Locomotive Co.， Ltd.
This standard is mainly drafted by Wu Ping， Li Ji， Feng Jiankun， Hu Zh

1 Scope
This standard specifies mass-related terms and definitions as well as the principles of mass determination for rolling stock in static state.
This standard is applicable to the following three vehicle groups which are:
a） Trains at a speed of 200 km/h and above;
b） Passenger trains-including metro and tramway-at a speed below 200 km/h;
c） Freight trains.
Locomotives are treated as passenger trains without payload.
2 Normative References
The following documents are indispensable for the application of this document. For all dated references, only the edition cited applies. For undated references, their latest edition of the referenced document （including any amendments） applies.
TB/T1740 Rolling Stock weight measurement methods
3 Terms and Definitions
For the purpose of this document, the following terms and definitions apply.
3.1 dead mass
Mass of empty rolling stocks, including permanently installed components and operation essentials, but excluding the staff and consumables that decrease in mass amid operation.
Note 1: Operation essentials include necessary medium （whose mass remains generally unchanged, such as lubricant, heat transfer mediums, etc. ） and the parts listed in the equip/nent list （spare parts, tools, tableware and bedding, etc. ）
Note 2: Term comparison of this standard to the corresponding terms and definitions in related standards is given in Appendix A.
3.2
design mass
Mass to be considered for the design of rolling stock.
3. 2.1
design mass in working order
Mass of the rolling stock quipped with all the consumables and occupied by all the staff, which it requires in.order to fulfil its function but empty of any payload （i. e. dead mass + consumables + staff）.
Note 1: Refer to the rules of "design mass in working order" in Table 1 for 6'consutuables".
Note 2: Term comparison of this standard to the corresponding standards is given in Appendix A.
3. 2. 2
design mass under normal payload
Design mass of the rolling stock in working order plus the normal design payload.
Note 1: The normal design payload is defined in Table 2 "mass calculation". In general, it represents the highest payload and it is determined by the type of rolling stock and the level of comfort associated with the type o~ service being provided.
Note 2: Term comparison of this standard to the corresponding standards is given in Appendix A.
3. 2. 3 design mass under exceptional payload
Design mass of rolling stock in working order plus exceptional payload.
Note: The exceptional payload is defined in Table 2 "mass calculation". It is determined by the type of rolling stock and it is the maximum payload that can be transported and will be experienced only under exceptional conditions （e. g. exceptional number of passengers）. It represents the design limit for operation of the rolling stock.
3.3 operational mass
Mass representing the state of the rolling stock in average operational conditions that is appropriate for the assessment of operational issues （see 3. 3. 2）.
3.3.1 operational mass in working order
Mass of the rolling stock with an average level of consumables and occupied by all the staff, which it requires in order to fulfil its function but empty of any payload （i. e. dead mass + average consumables + staff - half the wear allowance of the parts subject to wear）.
Note: Average consumables are defined in Table 1 "operational mass in working order".
3.3.2 operational mass under normal payload
Operational mass of the rolling stock in working order plus the normal operational payload.
Note 1:The normal operational payload is defined in Table 2 "operational mass". It is determined by the type of rolling stock and the level of comfort associated with the type of service being provided.
Note 2: Operational mass under normal payload may be used to determine energy consumption, mas identification of rolling stock, nominal static axle load and LCC calculation.
Note 3: Term comparison of this standard to the corresponding standards is given in Appendix A.
……

Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Mass Determinations
Appendix A(Informative) Term comparison of this standard to the corresponding terms and definitions in related standards
Appendix B(Informative) Density of Consumables
Appendix C(Normative) Standing Area Calculation
Bibliography