NB/T 11318-2023
Emergency design specifications for hydropower projects (English Version)
- Standard No.
- NB/T 11318-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- Professional Standard - Energy CN / NB
- Latest
- NB/T 11318-2023
- Introduction
Standard Framework and Technological Evolution
Comparison Dimensions Characteristics of this Standard Industry Progress Monitoring System 9 major types of monitoring and early warning systems (including geological disasters, large floating objects, etc.) Transition from single safety monitoring to multi-hazard early warning Emergency Facilities Clear standards for new facilities such as Emergency Helipad Introduce modern means such as aviation emergency rescue Configuration Grading 4-level emergency material allocation system based on storage capacity and traffic conditions Differentiated resource allocation
Core technology innovation
1. Multi-level monitoring and early warning system
The four-level early warning mechanism of red-orange-yellow-blue established in Chapter 4 of the specification corresponds precisely to the emergency response level. Taking the water regime automatic monitoring and reporting system as an example, it is required that when the rainfall monitoring value exceeds the threshold, an early warning must be issued through multiple channels such as the Internet and emergency broadcasting.
2. Emergency shelter system design
Chapter 7 stipulates that the effective area per capita of the emergency shelter is ≥1.5㎡, the protection time is ≥72 hours, and it must be equipped with double entrances and exits. Temporary shelters must be set up in underground powerhouses (≥1.0㎡/person, protection for 24 hours).
Analysis of implementation points
Typical application cases
When implementing a hydropower station with a storage capacity of 1.2 billion m³:
- Emergency materials are configured according to Level 1 standards (300 m2 storage warehouse)
- Two aviation emergency rescue bases are set up
- Flood discharge gates are equipped with dual-circuit emergency power supplies
Comparison of old and new standards
Project This specification Original standard Emergency power supply The power supply for flood discharge facilities is required to be arranged above the verified flood level The altitude requirement is not specified Material allocation Introduction of traffic conditions and social resources assessment dimensions Grading only by project scale
Industry impact and suggestions
The implementation of the standard will promote:
- Completion of emergency facility renovation within 3 years for existing projects
- Five synchronization principles for new projects (planning-acceptance synchronization)
- Establishment of a basin-level emergency linkage mechanism
NB/T 11318-2023 Referenced Document
- DL 5027 Typical extinguishing and protection regulation of electrical equipment
- DL/T 1430 Technical Guidelines for Online Monitoring Systems of Substation Equipment*， 2025-12-18 Update
- DL/T 1754 Technical specification for hydropower station dam operation safety management information system*， 2026-05-06 Update
- DL/T 5809 Technical specifications for safety monitoring of hydropower project reservoir area
- GB 50116 Code for design of automatic fire alarm system
- GB 50872 Code for fire protection design of hydropower projects
- GB 55036 General specification for fire protection installations
- GB/T 28570 Technical Guidelines for Online Monitoring System of Hydro-generator Units*， 2025-08-29 Update
- NB/T 10805 Calculation specifications for dam breach flood and unsteady flow in hydropower projects
- NB/T 10881 Design specifications for automatic fire alarm systems in hydroelectric power plants
- NB/T 11012 Classification of Hydropower Projects and Flood Standards
NB/T 11318-2023 history
- 2023 NB/T 11318-2023 Emergency design specifications for hydropower projects
