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GB/T 46193-2025Technical requirements for vertical cylindrical molten salt storage tank (English PDF)

立式圆筒形熔融盐储罐技术要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 5, 2025

Implementation date

May 1, 2026

Scope

GB/T 46193-2025 is the English-translated version of 立式圆筒形熔融盐储罐技术要求.

GB/T 46193-2025 is the Chinese national standard covering the tank that holds molten nitrate salt at 300 to 570 degrees — the alloy and the thermal expansion of a vessel that grows visibly when heated, the foundation cooling that keeps the ground from cooking, the internal insulation, the immersion heaters, and the inspection of something that must never be allowed to freeze. This is where a solar thermal plant keeps the heat it sells at night. First edition, under the China Electricity Council. In force from 1 May 2026. Issued on 5 October 2025, it has been in force since 1 May 2026.

Document preview — GB/T 46193-2025

National Standard of the People's Republic of China

ICS: 27.160
Classification: F 12

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

PrefaceIII
1 Scope1
2 Normative References1
3 Terms and Definitions1
4 General Requirements2
5 Technical Requirements2
5.1 Appearance and Dimensions2
5.2 Structure and Materials2
5.3 Thermal insulation and heat storage performance6
5.4 Tightness6
5.5 Ancillary Equipment7
6 Testing and Inspection 9.9
6.1 Test and Inspection Contents9
6.2 Appearance and Dimension Inspection9
6.3 Inspection of the slope and unevenness of the structural base plate10
6.4 Insulation Thickness Inspection11
6.5 Thermal storage performance and thermal insulation testing11
6.6 Water Filling Test12
7 Marking and document delivery13
7.1 Mark13
7.2 Document Delivery14
Reference15

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.

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 Electricity Council.

This document is under the jurisdiction of the National Technical Committee on Standardization of Solar Thermal Power Generation (SAC/TC565).

This document was drafted by: China Power Engineering Consulting Group East China Electric Power Design Institute Co., Ltd., and Shouhang High-Tech Energy Technology Co., Ltd.

The company, Shanghai Lanbin Petrochemical Equipment Co., Ltd., and Northwest Survey and Design Institute Co., Ltd. of China Power Construction Group.

The main drafters of this document are: Feng Yanlei, Gao Zhongwen, Lin Lei, Qi Zhipeng, Zhang Chungui, Li Huangcheng, Wang Yafei, Yao Xiangyu, Zhou Zhi, and Wang Yingchun.

Technical requirements for vertical cylindrical molten salt storage tanks

1 Scope

This document specifies the general requirements, technical requirements, testing and inspection, marking, and document delivery for vertical cylindrical molten salt storage tanks.

This document applies to single-layer vertical cylindrical molten salt (nitro type) storage tanks in dual-tank sensible heat storage systems of solar thermal power plants. Other types...

The vertical cylindrical molten salt (nitro type) storage tank is used as a reference for the use of the dual-tank sensible heat storage system.

2 Normative references

GB/T 713.1

GB/T 713.2

GB/T 40104

GB/T 41308

GB 50264

GB/T 51307

3 Terms and Definitions

The terms and definitions defined in GB/T 40104, GB/T 51307 and GB/T 41308, as well as the following terms and definitions, apply to this document.

3.1

Liquid level in a hot molten salt storage tank when the system is in a fully exothermic state; liquid level in a cold molten salt storage tank when the system is in a fully charged state.

3.2

Liquid level in a hot molten salt storage tank when the system is fully heated; liquid level in a cold molten salt storage tank when the system is fully deheated.

3.3 Design liquid level

The normal operating level plus the design margin.

Note. The design margin for liquid level mainly takes into account factors such as liquid level fluctuations caused by pipeline desalination, pump start-up and shutdown, and valve opening and closing.

3.4 Effective volume netliquidcapacity

The volume of the molten salt storage tank between the normal operating level and the minimum operating level.

3.5 Maximum storage capacity

The volume of a molten salt storage tank between the design liquid level and the bottom of the tank.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 40104 · GB 50264 · GB/T 51307

Editions of GB/T 46193

Edition	Title	Revision	Status
GB/T 46193-2025	Technical requirements for vertical cylindrical molten salt storage tank	current edition	Current

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