Partners save 15% on every standard

Valid

GB/T 46053-2025Technical specification at the project level for assessment of greenhouse gas emission reductions — Aggregate from iron ore waste rock (English PDF)

基于项目的温室气体减排量评估技术规范铁矿废石生产砂石骨料

Open the GB/T 46053-2025 preview as PDF

Preview — first pages of GB/T 46053-2025 (full document: 15 pages)

This is a limited preview

Buy now to download the full PDF (15 pages)

Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 29, 2025

Implementation date

March 1, 2026

Scope

GB/T 46053-2025 is the English-translated version of 基于项目的温室气体减排量评估技术规范铁矿废石生产砂石骨料.

GB/T 46053-2025 is the Chinese national standard covering counting the carbon saved by crushing mine waste rock into aggregate instead of quarrying fresh sand and gravel — the baseline scenario against which the saving is claimed, the project boundary and the emission sources inside it including the haulage, the emission factors and the activity data, and the principles of completeness, transparency and conservatism that keep the reduction from being overstated. First edition, under the China Iron and Steel Association. In force from 1 March 2026. Issued on 29 August 2025, it has been in force since 1 March 2026.

Document preview — GB/T 46053-2025

National Standard of the People's Republic of China

ICS: 77-010
Classification: H 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
3.1 Baseline scenario
3.2 [Source. GB/T 33760-2017, 3.5]
3.3 emission factor
3.4 Iron ore waste rock ironorewasterock
3.5
3.6 Project owner
4 Basic Principles of Evaluation
4.1 Correlation
4.2 Integrity
4.3 Consistency
4.4 Accuracy
4.5 Transparency
4.6 Conservatism
5 Assessment Content
5.1 Project boundary delineation and emission source identification

Foreword

This document is in accordance with GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting is scheduled.

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 by the China Iron and Steel Association.

This document is jointly managed by the China Iron and Steel Association and the National Technical Committee on Standardization of Carbon Emission Management (SAC/TC548).

This document was drafted by: Ansteel Group Mining Co., Ltd., Beijing University of Science and Technology, Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, and Baowu Resources.

Source Co., Ltd., Metallurgical Industry Information and Standardization Research Institute, Ansteel Group Mining Design and Research Institute Co., Ltd., Baogang Group Mining Research Institute (Limited) (Limited liability company), Beijing Building Materials Science Research Institute Co., Ltd., Tsinghua University, Liaoning University of Science and Technology, Guangdong Songshan Vocational and Technical College, Kunming University of Science and Technology, Benxi Iron & Steel (Group) Information Automation Co., Ltd., China Metallurgical Energy Conservation & Environmental Protection Co., Ltd., Inner Mongolia Huayizhuo Materials Technology Co., Ltd.

The main drafters of this document are: Liu Bingyu, Xi Fengming, Wang Jiaoyue, Cong Fengwu, Niu Le, Qiu Jinhui, Wang Linjun, Liu Dianjun, Fu Guohui, and Pan Dawei.

Li Hong, Shi Jianjun, Yang Chun, Liu Shudong, Qi Liwei, Fan Lipeng, Jiang Xue, Bing Longfei, Wang Zheng, Zhou Lei, Wu Dan, Li Yuan, Wang Daohan, Chen Yongbin Chen Jian, Zhang Siqi, Su Bo, Wang Jiangwei, Luo Guomin, Zhang Ruopeng, Zhang Zunjun, Li Yizhuo, Xu Guangrong, Liu Xiaobo, Liu Zhengyu, Xu Jianwei, Hu Jian Gong Changliang, Jiang Peng, Xu Tingting, Zhou Rui, Xu Dongxu, Chai Qingping, Zhao Lingyu, Wang Guangjin, Yue Changsheng, Shi Yu, Yu Jingyao, Yang Zhao, Li Yunyun, Qiu Shi Hu Jun, Peng D, Yan Guoying, Xia Chun, Zhang Yuanchun, Gao Yang, Wang Liancheng, Liu Lei, Yue Xingtong, Wang Qiang, Feng Hongjiang, Zhang Xingfan, Ma Yipeng, Wang Jing, Zhang Yuwei Zhang Guangliang.

Introduction

To facilitate domestic and international exchange, and in accordance with the relevant requirements of the Intergovernmental Panel on Climate Change (IPCC), the values in this document are...

It is expressed in the form of "international unit of measurement for substance (element)", such as kgCO2 representing kilograms of carbon dioxide.

Technical Specifications for Project-Based Greenhouse Gas Emission Reduction Assessment Iron ore waste rock production of sand and gravel aggregate

1 Scope

This document specifies the terms and definitions, basic principles, and assessment procedures for greenhouse gas emission reduction assessment of iron ore waste rock production sand and gravel aggregate projects. Content, etc.

This document applies to the assessment of greenhouse gas emission reductions from iron ore waste rock production projects for producing sand and gravel aggregates.

2 Normative references

GB/T 24851

GB/T 32150

GB/T 33760-2017

3 Terms and Definitions

The terms and definitions defined in GB/T 33760-2017 and GB/T 32150, as well as the following terms and definitions, apply to this document.

3.1 Baseline scenario

These are hypothetical scenarios that might occur without implementing the project, serving as a reference.

Note. The baseline scenario occurs during the same time period as the project.

[Source. GB/T 33760-2017, 3.4, with modifications]

3.2 [Source. GB/T 33760-2017, 3.5]

The reduction in greenhouse gas emissions generated by the project over a certain period, calculated and compared to the baseline scenario emissions. Small quantity.

3.3 emission factor

Greenhouse gas emission coefficients characterizing unit production or consumption activity.

[Source. GB/T 32150-2015, 3.13]

3.4 Iron ore waste rock ironorewasterock

Lumpy solid waste generated during iron ore mining and beneficiation.

3.5

Sand and gravel made from natural rocks, pebbles, or mine waste rock through mechanical processing, and whose quality meets the requirements of construction projects.

Note. Aggregates with a particle size greater than 4.75 mm are called coarse aggregates, and aggregates with a particle size not greater than 4.75 mm are called fine aggregates.

3.6 Project owner

An organization or individual that has full control over and is responsible for a project.

[Source. GB/T 33760-2017, 3.10]

4 Basic Principles of Evaluation

4.1 Correlation

Select appropriate greenhouse gas sources, data, and methods.

4.2 Integrity

This includes all relevant greenhouse gas emissions applicable to the needs of the target users.

4.3 Consistency

It enables meaningful comparisons of information related to greenhouse gases.

Note. Using the same criteria and procedures, conducting two emission reduction assessments periodically (e.g., at one-year intervals) and comparing the results of the two assessments is considered meaningful. Compare.

4.4 Accuracy

Minimize bias and uncertainty as much as possible.

4.5 Transparency

Subject to compliance with national policies and trade secret requirements, publish fully applicable greenhouse gas information to enable target users to make informed decisions. Reasonable decision-making.

Note. To meet the principle of transparency, the following are generally required, but not limited to.

a) Explain and document the principles and related content upon which the baseline scenario and project scenario were selected;

b) Explain and document the selection of assessment procedures, assessment methods, emission factors, activity data, etc.

4.6 Conservatism

Ensure that the assumptions, figures, and assessment methods used do not overestimate greenhouse gas emission reductions.

5 Assessment Content

5.1 Project boundary delineation and emission source identification

The project boundary includes the aggregate production site and off-site transportation of iron ore waste involved in the iron ore waste to aggregate production project [see...].

Figure 1a). The baseline scenario accounting boundary includes sand and gravel mining sites, sand and gravel aggregate production sites, and sand and gravel transportation [see Figure 1a].

Figure 1b). Information on greenhouse gas emission sources and types of greenhouse gases within the project boundary is shown in Table 1.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 46053

Edition	Title	Revision	Status
GB/T 46053-2025	Technical specification at the project level for assessment of greenhouse gas emission reductions - Aggregate from iron ore waste rock	current edition	Current

This page sells the current edition, GB/T 46053-2025. Earlier editions are listed for reference only.

How to Buy GB/T 46053-2025

1Add to cart. Click the "Buy GB/T 46053-2025" button on this page. You can add more standards before checkout.
2Checkout. Enter your email and billing details. Payment is processed securely by Stripe (cards, Apple Pay, Google Pay supported).
3Instant delivery (0–9 sec). Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4Invoice included. A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.