General layout of Class A production facilities

Is it a new plant or an old one? Is it a process that requires close monitoring? Does it constitute a major hazard source?

Take a look at this file! **General Administration of Work Safety and Ministry of Housing and Urban-Rural Development: Notice on Further Strengthening the Safety Design Management for Chemicals Construction Projects, Document No. An Jian Zong Guan San [2013] 76

This post was last edited by wang*nhua77020 on 2016-4-21 at 21:07. **Notice from the State Administration of Work Safety and the Ministry of Housing and Urban-Rural Development on Further Strengthening the Safety Design Management of Chemicals Construction Projects** (An Jian Zong Guan San [2013] No. 76). To the work safety supervision bureaus, as well as the housing and urban-rural development authorities of all provinces, autonomous regions, municipalities directly under the Central Government, and the Xinjiang Production and Construction Corps; to relevant central state-owned enterprises and design firms: In order to further strengthen the safety design management of chemicals construction projects (hereinafter referred to as “construction projects”), to effectively improve the intrinsic safety level of chemical enterprises, and to prevent accidents at the design stage, the following requirements are hereby outlined: 1. Strict requirements for the qualifications of design firms for construction projects. (1) Design firms working on construction projects must possess the relevant engineering design qualifications in the fields of chemicals, petrochemicals, pharmaceuticals, oil and gas (offshore oil), etc., as specified in the “Engineering Design Qualification Standards” issued by the former Ministry of Construction (Jian Shi [2007] No. 86). (II) For large-scale construction projects involving highly regulated hazardous chemical processes, highly regulated **chemicals**, and major hazard sources of such **chemicals** (hereinafter referred to as \"two high-regulation items and one major hazard\"), the design unit must possess a comprehensive qualification for engineering design, or a corresponding first-class professional qualification in the fields of chemical, petrochemical, pharmaceutical, or oil and gas (offshore oil) engineering. II. Effectively implement safety management responsibilities for construction projects (III) The project owner shall entrust a design unit with the required qualification level to handle the engineering design of the construction project, and apply legally for a safety review of the project as well as complete the relevant procedures. For construction projects subject to engineering supervision, the supervision of safe construction quality should also be entrusted. The project owner should, in the design contract for the construction project, actively request the design firm to conduct a Hazard and Operability (HAZOP) study on the design, and assign personnel with experience in production operations to participate in this review as well as to examine the HAZOP report. For construction projects involving \"two key aspects, one major aspect\" and first-time industrial design, a HAZOP analysis must be conducted during the basic design phase. (IV) The legal representative of the design unit is fully responsible for the safety design of the construction project. The design unit shall establish a safety design responsibility system, formulate regulations for safety design management, clarify the safety design responsibilities of management positions and design positions at all levels, and assume lifelong responsibility for the safety design of the construction project. The design document shall be prepared in strict accordance with the requirements of the \"Guidelines for Compiling the Safety Facility Design Section for Chemical Construction Projects\" (Safety Supervision Administration Office, Management Department III [2013] No. 39), submitted to the relevant regulatory authorities together with the project owner for review, and revised and improved based on the feedback received from such reviews. (5) The construction unit must construct in accordance with the safety facility design that has been approved through review, and shall be responsible for the quality of such safety facilities. (VI) The safety supervision authorities shall, in accordance with **relevant regulatory requirements, conduct safety reviews of the safety conditions of construction projects, the design of safety facilities, and the completion acceptance processes. Experts participating in the review should have relevant experience in the engineering design, production operation, or safety management of construction projects, as well as senior professional technical titles in related fields. III. Strengthening the management of the safety design process (VII) During the preliminary assessment or feasibility study phase of a construction project, the design firm should carry out an initial identification of potential hazards. It is necessary to carefully analyze the process-related risks and hazards associated with the project, the local natural and geographical conditions, natural disasters, and the impact of surrounding facilities on the project. Additionally, it is important to assess the possible effects on safety in the surrounding area in the event of accidents such as leaks, fires, or explosions. The process package design documents for construction projects classified as “two key items and one major item” shall include a process hazard analysis report. (8) During the overall design and basic engineering design phases, the design unit shall, in light of the characteristics of the construction project, focus on conducting safety reviews of the following design documents: 1. General layout plan ； 2. Layout diagram of equipment and devices ； 3. Map of hazardous area classification for explosions ； 4. Process Piping and Instrumentation Diagram (PID) ； 5. Safety interlocks, emergency shutdown systems, and safety instrumented systems ； 6. Flammable and toxic material leakage detection system ； 7. Torch and safety relief system ； 8. Emergency systems and facilities. (IX) The design unit should strengthen the safety risk analysis of construction projects, and actively apply methods such as HAZOP analysis for internal safety design reviews. (10) Strengthen the management of design changes. During the detailed design and construction installation phases, if significant changes are made to the design, the design agency shall submit it for re-approval in accordance with the management procedures. Design changes during the procurement and construction phases should not affect the safety and quality of the project. The design agency shall promptly organize and prepare the as-built design drawings upon completion of construction; for underground concealed works such as pipelines, valves, and equipment involving **chemical substances, complete as-built documentation must be provided. (11) During the commissioning phase, the design unit shall participate in the safety review prior to commissioning, provide relevant technical documents and data, and offer technical support for a safe commissioning process. (12) Establish and implement a design follow-up system. Within two years after the completion and commissioning of the construction project for which design work was carried out, the design firm should conduct a follow-up visit to the project in order to identify any safety issues that arose during the startup and operational phases of the facility, as well as any changes made to the original design on site, thereby continuously improving the quality of the design. (13) Design agencies should, in light of the actual conditions of domestic construction projects, actively adopt advanced foreign safety technologies and risk management methods to strive to improve the level of intrinsically safe design. IV. Key Points for the Implementation of Safety Design (14) The design unit shall determine the standards and specifications to be applied in this project based on the characteristics of the hazard sources associated with the construction project, as well as the scope of application of relevant standards and regulations. For construction projects involving the \"two key aspects and one major issue\", they must meet at least the requirements of the following current standards and specifications, with the strictest safety provisions taking precedence: 1. \"Code for General Layout Design of Industrial Enterprises\" (GB50187) ； 2. «Code for General Layout and Transportation Design of Chemical Enterprises» (GB50489) ； 3. Code for Fire Protection Design of Petrochemical Enterprises (GB50160) ； 4 \"Code for Fire Protection Design of Oil and Gas Engineering Projects\" (GB50183) ； 5. Code for Fire Protection Design of Buildings (GB50016) ； 6. \"Code for Design of Oil Depots\" (GB50074) ； 7. \"Code for Design of Detection and Alarm Systems for Flammable and Toxic Gases in Petrochemical Industries\" (GB50493) ； 8. “Guidelines for Safety Design Management of Chemical Engineering Construction Projects” (AQ/T3033). (15) For construction projects with explosion hazards, their fire separation distances shall meet the requirements of GB50160 at a minimum. When **the standard specifications do not specify requirements, quantitative risk analysis can be employed in accordance with relevant standards to calculate and determine the safety distances between devices or facilities. (16) Liquefied hydrocarbon tank farms or flammable liquid tank farms should not be located adjacent to areas that are higher than the process units, key plant facilities, or areas with concentrated populations ； Flammable liquid tank groups should not be arranged in a stepped manner. When subject to constraints or process requirements, measures should be taken to prevent flammable liquids from flowing into lower-level facilities or areas. (17) All flammable liquid storage tanks in construction projects shall be equipped with separate fire dikes or fire barriers. The effective volume within the fire dike should not be less than the volume of the largest tank in the tank farm. When floating roof tank farms cannot meet this requirement, an emergency liquid storage tank should be installed to hold the remaining volume; however, the effective volume within the fire dike of such tank farms should still not be less than 50% of the volume of the largest tank in the farm. (18) The design of load-bearing steel structures shall comply with relevant codes such as the \"Unified Standard for Reliability Design of Engineering Structures\" (GB50153) and the \"Code for Design of Steel Structures\" (GB50017). The safety level to be adopted shall be determined based on the severity of the potential consequences of structural failure, such as casualties, economic losses, and impacts on society or the environment. For structures that may lead to serious consequences, their design safety level must not be lower than grade two. (19) Newly built chemical plants must be designed with automated control systems. It should be determined whether a safety instrumented system is necessary based on the results of the hazard and risk analysis of the process. For large and medium-sized new projects involving hazardous chemical processes that are under strict supervision, the design of safety instrument systems shall be carried out in accordance with relevant standards such as \"Functional Safety of Safety Instrument Systems in the Process Industry\" (GB/T21109) and \"Design Code for Safety Instrument Systems in Petrochemical Industries\" (GB50770). (20) For the filling of flammable, explosive, toxic, and harmful liquefied gases such as liquefied petroleum gas, liquefied natural gas, liquid chlorine, and liquid ammonia, a flexible piping filling system should be designed; the static electricity grounding of the filling equipment’s pipelines, as well as the necessary hoses for loading and unloading, instruments, and safety accessories, must all be provided. (21) **Chemical long-distance pipelines shall be equipped with leak prevention systems, real-time monitoring systems (SCADA data acquisition and monitoring systems), and emergency shutdown facilities. (22) Emergency shut-off devices that can be operated automatically or remotely by hand should be installed on the pipelines for feeding and discharging materials from toxic material storage tanks, cryogenic storage tanks, and pressure spheres. (23) The exterior walls of the control rooms and cabinet rooms within the plant area, on the side facing equipment with fire or explosion hazards, shall be solid walls made of non-combustible materials without any doors or windows, with a fire resistance rating of not less than 3 hours. All relevant entities shall, in accordance with relevant laws, regulations, standards, specifications, and the requirements of this notice, strengthen the management of safety design for construction projects. Design firms and designers should aim to ensure the safe and stable operation of the installations as their goal in safety design, and make efforts to eliminate potential accident risks in the engineering design. Please ask the provincial safety supervision bureaus and the departments in charge of housing and urban-rural development to promptly convey the spirit of this notice to the local safety supervision agencies at all levels, the relevant departments in charge of housing and urban-rural development, and other related entities. **General Administration of Work Safety, Ministry of Housing and Urban-Rural Development, June 20, 2013

For small Class A factories and Class A warehouses, we carry out the overall layout planning in accordance with building codes

It’s clearly stated on the fourth floor; you just need to find your corresponding seat

New projects should be carried out in accordance with petrochemical regulations as much as possible.