1.0.1 This code is prepared with a view to unifying the electrical design of medical buildings, implementing the national technical and economic policies and realizing safety and reliability, economy and rationality, energy conservation and environmental protection, advanced technology, and convenient maintenance and management.
1.0.2 This code is applicable to the electrical design of newly-built, extended and rebuilt medical buildings.
1.0.3 Technology and product complying with the current relevant national standards shall be selected for the electrical design of medical buildings; do not use those having been obsoleted in China.
1.0.4 The electrical design of medical buildings shall not only meet the requirements of this code, but also comply with those specified in the current relevant national standards.
2 Terms and Acronyms
2.1 Terms
2.1.1 Medical system
The structure and function of medical care.
2.1.2 Contact part
The part of medical electrical equipment which is required to or may touch the patient body during normal use.
2.1.3 Prospective touch voltage
The voltage between the body and the potentially touched conductive part where the human or animal has not touched the conductive part yet.
2.1.4 Conventional prospective touch voltage
The prospective touch voltage which is allowed to exist continuously without time limit under the specified external influence conditions.
2.2 Acronyms
CCU: critical care unit
CR: computed radiography
CT: computed tomography
DR: digital radiography
DSA: digital subtraction angiography
ECT: electroconvulsive therapy
ICU: intensive care unit
MRI: magnetic resonance imaging
NICU: neonatal intensive care unit
PET: positron emission tomography
SPECT: single-photon emission computed tomography
UPS: uninterrupted power supply
3 Medical Location Classification
3.0.1 Medical locations shall be classified into the following three categories according to the electrical safety protection requirements:
1 Category 0: the medical location where the contact part of medical electrical equipment is not used;
2 Category 1: the medical location where the contact part of medical electrical equipment is required to touch the surface or inside of the patient body (except the parts stated in Category 2 medical location);
Foreword I 1 General Provisions 2 Terms and Acronyms 2.1 Terms 2.2 Acronyms 3 Medical Location Classification 4 Power Supply and Distribution System 4.1 General Requirement 4.2 Load Level Classification 4.3 Distribution System 4.4 Emergency Power 4.5 Energy Management System 5 Low Voltage Power Distribution 5.1 General Requirement 5.2 Power Distribution of Operation Department 5.3 Distribution of Medical Locations 5.4 Local IT System of Medical Location 5.5 Selection of Conductors 6 Power Distribution of Normal Medical Equipment 6.1 General Requirement 6.2 Medical Magnetic Resonance Imaging (MRI) 6.3 Medical X-ray Equipment 6.4 Medical High-energy X-ray Equipment 6.5 Medical Nuclear Equipment 7 Wiring 7.1 General Requirement 7.2 Wiring Requirement for Special Locations 7.3 Shaft and Equipment Room 8 Electric Lighting 8.1 General Requirement 8.2 Illuminance and Lighting Quality 8.3 Lighting Style and Type 8.4 Emergency Lighting 8.5 Lighting Control 8.6 Medical Mark Lighting 8.7 Energy Saving of Lighting 9 Lightning Protection, Earthing and Safety Protection 9.1 General Requirement 9.2 Lightning Protection 9.3 Earthing 9.4 Electric Shock Protection 9.5 Electromagnetic Compatibility 9.6 Harmonic Control 10 Intelligent Integrated System 11 Information System 12 Monitoring Systems for Building Equipment and Medical Equipment 12.1 Building Equipment Monitoring System 12.2 Medical Equipment Monitoring System 13 Public Security System 14 Calling Signal System 14.1 General Requirement 14.2 Patient Call Signaling System 14.3 Nursing Call Signaling System 14.4 Ward Visiting System Explanation of Wording in This Code List of Quoted Standards
1 General Provisions
1.0.1 This code is prepared with a view to unifying the electrical design of medical buildings, implementing the national technical and economic policies and realizing safety and reliability, economy and rationality, energy conservation and environmental protection, advanced technology, and convenient maintenance and management.
1.0.2 This code is applicable to the electrical design of newly-built, extended and rebuilt medical buildings.
1.0.3 Technology and product complying with the current relevant national standards shall be selected for the electrical design of medical buildings; do not use those having been obsoleted in China.
1.0.4 The electrical design of medical buildings shall not only meet the requirements of this code, but also comply with those specified in the current relevant national standards.
2 Terms and Acronyms
2.1 Terms
2.1.1 Medical system
The structure and function of medical care.
2.1.2 Contact part
The part of medical electrical equipment which is required to or may touch the patient body during normal use.
2.1.3 Prospective touch voltage
The voltage between the body and the potentially touched conductive part where the human or animal has not touched the conductive part yet.
2.1.4 Conventional prospective touch voltage
The prospective touch voltage which is allowed to exist continuously without time limit under the specified external influence conditions.
2.2 Acronyms
CCU: critical care unit
CR: computed radiography
CT: computed tomography
DR: digital radiography
DSA: digital subtraction angiography
ECT: electroconvulsive therapy
ICU: intensive care unit
MRI: magnetic resonance imaging
NICU: neonatal intensive care unit
PET: positron emission tomography
SPECT: single-photon emission computed tomography
UPS: uninterrupted power supply
3 Medical Location Classification
3.0.1 Medical locations shall be classified into the following three categories according to the electrical safety protection requirements:
1 Category 0: the medical location where the contact part of medical electrical equipment is not used;
2 Category 1: the medical location where the contact part of medical electrical equipment is required to touch the surface or inside of the patient body (except the parts stated in Category 2 medical location);
Contents of JGJ 312-2013
Foreword I
1 General Provisions
2 Terms and Acronyms
2.1 Terms
2.2 Acronyms
3 Medical Location Classification
4 Power Supply and Distribution System
4.1 General Requirement
4.2 Load Level Classification
4.3 Distribution System
4.4 Emergency Power
4.5 Energy Management System
5 Low Voltage Power Distribution
5.1 General Requirement
5.2 Power Distribution of Operation Department
5.3 Distribution of Medical Locations
5.4 Local IT System of Medical Location
5.5 Selection of Conductors
6 Power Distribution of Normal Medical Equipment
6.1 General Requirement
6.2 Medical Magnetic Resonance Imaging (MRI)
6.3 Medical X-ray Equipment
6.4 Medical High-energy X-ray Equipment
6.5 Medical Nuclear Equipment
7 Wiring
7.1 General Requirement
7.2 Wiring Requirement for Special Locations
7.3 Shaft and Equipment Room
8 Electric Lighting
8.1 General Requirement
8.2 Illuminance and Lighting Quality
8.3 Lighting Style and Type
8.4 Emergency Lighting
8.5 Lighting Control
8.6 Medical Mark Lighting
8.7 Energy Saving of Lighting
9 Lightning Protection, Earthing and Safety Protection
9.1 General Requirement
9.2 Lightning Protection
9.3 Earthing
9.4 Electric Shock Protection
9.5 Electromagnetic Compatibility
9.6 Harmonic Control
10 Intelligent Integrated System
11 Information System
12 Monitoring Systems for Building Equipment and Medical Equipment
12.1 Building Equipment Monitoring System
12.2 Medical Equipment Monitoring System
13 Public Security System
14 Calling Signal System
14.1 General Requirement
14.2 Patient Call Signaling System
14.3 Nursing Call Signaling System
14.4 Ward Visiting System
Explanation of Wording in This Code
List of Quoted Standards
