1 General Principles
1.0.1 This specification is applicable to the power design of newly built, reformed or expanded plants in petrochemical enterprises (including oil refining, chemical and chemical fiber plants, hereinafter referred to as “the plant”).
1.0.2 The following principles shall be met for the electric power design of the plants.
(1) The technical and economic policies of the state shall be earnestly implemented, so as to provide cost effective and rational designs that use sophisticated technology and ensure personal and equipment safety and reliable power supply;
(2) In line with the features, scales and development plans of the projects, the short term construction and long term development shall be well combined, with the short term construction to be given the first place and proper development port to be reserved, but without any land reserved for future expansion;
(3) Reasonable arrangement and design plans shall be worked out through overall planning and all-around consideration based on the load nature, capacity and environmental conditions, etc.;
(4) Different energy saving measures shall be actively taken in the electric power design, in an effort to reduce the consumption of power;
(5) Any relevant new theory, new technology, new equipment or new material that proves effective through practice shall be adopted, in an effort create good economic, social and environmental benefits.
1.0.3 In implementation of this Code, the provisions under relevant current state and sector standards and codes shall also be conformed to.
Contents
Code for Electric Power Design in Petrochemical Plants
1 General Principles
2 Terms
3 Power Supply & Distribution System
3.1 Load Classification
3.2 Power Supply Requirements
3.3 Power supply and distribution system
3.4 Selection of voltage and quality of electric energy
3.5 Inactive power compensation
4 Explosion & Fire Hazard Environments
4.1 General rules
4.2 Division of hazardous zones in explosive gas environment
4.3 Ranges of hazardous zones in an explosive gas environment
4.4 Electrical equipment in explosive gas environment
4.5 Division of hazardous zones in explosive dust environment
4.6 Ranges of hazardous zones in an explosive dust environment
4.7 Electrical equipment in an explosive dust environment
4.8 Zoning of fire hazardous environment
4.9 Electrical equipment in the fire hazardous environment
5. Transformer and Switchgear Substations
5.1 Site Selection of Substations
5.2 Selection of 6 ~35kV Major Electrical Equipment
5.2.1 Principles for selection of major electrical equipment shall be as follows:
5.2.3 Principles for selection of circuit breakers
5.2.4 Principles for selection of current transformers
5.2.5 Principles for selection of voltage transformer:
5.2.6 Principles for selection of isolating breakers
5.2.7 Principles for selection and installation of arc-extinguishing coils
5.2.8 Principles for selection of emergency diesel generator set
5.2.9 Principles for selection of lightning arresters
5.3 Selection of Low Voltage Equipment
5.4 Arrangement of Transformer and Switchgear Units
5.5 Requirement for Buildings
5.6 Fire Protection Requirements
6. Automatic Devises and Microprocessor-based Automation System
6.1 Automatic Switching-over of Power Supply
6.2 Automatic Restart-up of Motors
6.3 Microprocessor-based Integrated Automation System
7. Selection and Laying of Cables
7.1 Selection of cables
7.2 General Requirement for Cable Laying
7.3 Cable Laying Method
8 Power Distribution
8.1 General provisions
8.2 Protection of motor and LV distribution line
8.3 Set up of motor control devices
9 Lighting
9.1 lighting modes and categories
9.2 Lighting power distribution and control
9.3 Light source selection
9.4 Selection and arrangement of illuminators
10 Lightning protection and ground
10.1 Categories and measures of lightning protection areas
10.2 Lightning protection of power equipment
10.3 Ground methods and basic requirements
10.4 Grounding of electrical equipment
11 Electrical energy saving
Appendix A Classification of Protection Classes for Enclosures of Electrical Equipment
Appendix B Classification of Zones of Explosion Hazardous Locations for Petrochemical Production Plant
Appendix C Illustrations for Classification of Explosion Hazardous Zones and Tables of Classification Conditions for Hazardous Locations
Appendix D Examples of Classes and Groups of Gas/Vapor Explosion Hazardous Mixtures
Appendix E Table of Characteristics of Explosion Hazardous Dusts
Wording Explanation
