HG/T 20556-1993 Regulations for the architectural design of control rooms in chemical plants
Some standard content:
Industry Standard of the People's Republic of China
Architectural Design Regulations for Control Rooms in Chemical Plants
HG 20556-93
Editor: Lanzhou Petrochemical Design Institute of Sinopec Approval Department: Ministry of Chemical Industry Date of Implementation: October 1, 1994
Editorial Center for Engineering Construction Standards of the Ministry of Chemical Industry
1994 Beijing
Document of the Ministry of Chemical Industry
Huajianfa (1994) No. 250
Notice on the Issuance of Six Chemical Industry Standards Including "Regulations on Basic Design of Piston Compressors"
Chemical Industry Departments (Bureaus, Companies) of Provinces, Autonomous Regions, Municipalities Directly under the Central Government, and Cities with Independent State Planning, and All Relevant Design Units:
The six architectural design standards including "Regulations on Basic Design of Piston Compressors" formulated by the Ministry's Architectural Design Technology Center and the relevant design institutes have been reviewed and approved as chemical industry standards (see the attached table for details of the numbers). They will be implemented from October 11, 1994. The six standards are managed by the Ministry's Architectural Design Technology Center Station; and published and distributed by the Ministry's Engineering Construction Standards Promotion and Editing Center. Ministry of Chemical Industry
April 13, 1994
Appendix:
Numbers of six chemical industry standards for architectural design Standard name
Piston compressor foundation
Design regulations
Centrifugal compressor foundation
Design regulations
Editor-in-chief
Standard number
The Fourth Design Institute of the Ministry of Chemical Industry HG20554-93
Jilin Chemical Company Design Institute
Shanghai Pharmaceutical Design Institute
Reinforced concrete truss pipe rack
General drawing
General drawing of steel decking
Chemical plant control room building
Design regulations
Masonry structure design calculation book
Format regulations
Global Company| |tt||Sinopec Lanzhou Petroleum
Chemical Engineering Design Institute
Global Corporation
HG20555-93
HG21552-93
HG21553-93
HG20556-93
HG21555-93
1 General toilet
General map location||t t||3 Architectural Design
3.1 General Provisions
3.2 Indoor Layout
3.3 Indoor Environment
3.4 Indoor Decoration and Building Structure
Appendix Explanation of Terms in These Regulations
Explanation of Articles
(2)
(3)
(4)
(7)
1 General Provisions.
1.0.1 These Regulations apply to the following newly constructed, expanded and renovated control room buildings: 1.0.1.1 Control room buildings using conventional instruments; 1.0.1.2 Control room buildings using distributed control systems (DCS) and programmable logic controllers (PLC)
1.0.1.3 Control room buildings using computers. In addition to complying with these Regulations, the architectural design of the control room shall also comply with the provisions of the relevant national standards (codes) currently in force.
2.0.1 The location of the control room in the general plan shall meet the following requirements: 2.0.1.1 It shall be located in a non-explosion-proof area. If it cannot be met due to conditions, safety protection measures shall be taken.
2.0.1.2 It shall be as close as possible to the production equipment it controls. The main control room of the whole plant shall be close to the main process equipment, and the control room at the workshop section level shall be close to the main operation area. 2.0.1.3 In the vicinity of flammable, explosive, toxic, dusty, and water mist Or in production equipment with corrosive media, it should be arranged on the leeward side of the lowest frequency wind direction in the region all year round; 2.0.1.4 It should not be arranged in places with large noise, vibration or continuous electromagnetic interference. If it cannot be avoided, sound insulation, vibration isolation and shielding measures should be taken: 2.0.1.5 It should not be close to the main traffic arteries. If it cannot be avoided, the outer wall of the control room should be no less than 20m away from the center line of the artery;
2.0.1.6 The control room should face south rather than west. If it cannot be avoided, sunshade measures should be taken.
Architectural Design
General Provisions
3.1.1 The fire resistance level of the control room should not be lower than Level 2. The fire resistance level of the control room where special and valuable instruments and equipment are installed should be Level 1. 3.1.2 The main control room of Class A and Class B plants (or combined devices) with explosion hazards should be set up independently: When the fire protection distance requirements cannot be met, a frame or rack structure with reinforced concrete columns or steel columns as the load-bearing structure should be used: The steel columns should adopt a fire protection layer with a fire resistance limit of not less than 2.50h.
3.1.3 The sub-control room of Class A and Class B plants with explosion hazards can be set up adjacent to the outer wall and separated from other parts by a non-combustible wall with a fire resistance limit of not less than 3.00h. 3.1.4~ The control room should not be directly located under the floor where corrosive liquids are exposed, nor should it be directly connected to the wide room with corrosive production. 31.5 The control room equipped with automatic fire alarm devices and automatic fire extinguishing devices should be equipped with a fire control room.
The fire resistance level of the independently set fire control room should not be lower than Level 2. The fire control room attached to the building should be located on the ground floor or underground floor. It should be separated from other parts by partition walls with a fire resistance limit of not less than 3.00h or floor slabs with a fire resistance limit of 2.00h. It should also be separated from other parts by a safe exit to the outside.
3.1.6 In the independent control room building, auxiliary living rooms such as duty room, dressing room, toilet, etc. should be set up.
3.1.7 Large and medium-sized control rooms shall not be directly connected to auxiliary rooms such as air-conditioning room, instrument maintenance room, office, etc., and corridors should be used in between. There should be convenient passages between the operation room and the control room and computer room. When the control room, cabinet room and auxiliary rooms such as office, duty room and living room are adjacent, there shall be no doors connecting them.
Class standard line
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3.1.8 When conventional instruments use frame panels and screen panels, the area in front of the panel and the area behind the panel should be separated. A partition should be set between the operation room and the cabinet room of the control room of the distributed control system: a glass partition should be set between the operation room and the computer room and the visiting corridor. 3.1.9 Online primary analysis instruments for flammable gases, liquefied hydrocarbons and flammable liquids shall not be installed in the control room. When the above instruments are installed in the adjacent rooms of the control room, the partition wall should be a firewall.
3.1.10 Control rooms located on the floor should be equipped with cable mezzanines or pipe wells. 3.1.11 The number of safety exits in large and medium-sized control rooms should not be less than 2. 3.1.12 Large and medium-sized control rooms and control rooms located in windy and cold areas and using air conditioning should be equipped with door vestibules or front rooms. 3.1.13 The setting of doors shall meet the following requirements: 3.1.13.1 Doors shall open outwards and should be set in the direction of the lowest frequency wind throughout the year. They should not be opened to places with explosion or fire hazards.
3.1.13.2 There should be two doors from the pre-panel area to the post-panel area in large and medium-sized control rooms and one in small control rooms.
3.1.13.3 Doors leading directly to the outdoors and adjacent rooms (except instrument maintenance rooms) shall not be set in the post-panel area, cabinet room, computer room, and operation room. 3.1.4 The setting of windows shall meet the following requirements: 3. 1. 14.1+
Windows shall be set in the direction without explosion and fire extinguishing danger: Control rooms located in places with explosion or fire danger shall not be equipped with windows: 3.114.21
3.1.14.3 Except for control rooms using conventional instruments, other types of control rooms should not be equipped with windows;
3.1.14.4 When there is a cap on the top of the instrument panel, high side windows can be set in the area behind the panel; when there is no cap, high side windows should not be set in the area behind the panel to avoid glare. 3.2 Indoor layout
3.2.1 The area of the control room using conventional instruments shall be determined based on the number and arrangement of instrument panels, operation and maintenance requirements, and the reserved space for increasing instrument panels due to production expansion.
3.2.1.1 The arrangement of instrument panels can be in straight line, broken line, orthogonal shape. 3.2.1.2 Depth of control room (clearance): When an operation table is provided, it should not be less than 7.50m; when no operation table is provided, it should not be less than 6.00m. 3.2.1.3 The depth of the back-panel area (clearance from the edge of the back-panel to the wall) should be 1.50~2.00m, except for channel-type instrument panels where no distance is required; it can be appropriately increased when there are auxiliary equipment or other special requirements behind the panel.
3.2.1.4 If an operation table is provided in the back-panel area, the clear distance from the operation table to the wall should be 3.00~4.00m; if no operation table is provided, the clear distance from the panel to the wall should not be less than 3.50m. 3.2.2 The control room of a distributed control system consists of an operation room, a frame room and other auxiliary production rooms. Its area should be determined according to the number, size and use requirements of the hardware, and sufficient space for operation and maintenance should be left.
3.2.2.1 The construction area of an operation room with two operation stations is generally 40~50m2, and 5~9m2 should be added for each additional operation table. (1) The width of the operation room is determined according to the actual needs of the operation table, printer or other instrument panels in the control room. The net distance between the outer edge of the equipment and the wall should not be less than 1.20m. (2) The depth of the operation room should not be less than 6.00m, and the net distance between the back of the operation table and the wall should not be less than 1.20m.
3.2.2.2 The horizontal spacing between the grouped cabinets in the cabinet room should not be less than 1.50m, and the net distance between the outer edge of the equipment and the wall should not be less than 1.00m. The depth of the cabinet room is calculated according to the size and spacing of the rows of cabinets. The spacing between two rows of cabinets or the net distance between the cabinet and the wall shall not be less than 1.50m. When the cabinets are installed and arranged independently, the net distance between the cabinets should not be less than 0.80m. 3.2.2.3 The auxiliary production rooms mainly include hardware and software studios, UPS power supply rooms, air-conditioning rooms and lounges for external operation and inspection personnel, etc. Their areas are generally not less than 1.50 times the sum of the areas of the operation room and the cabinet room.
3.2.3 The area of the computer room is determined according to the equipment size, actual work, maintenance and other needs.
3.2.4 The net height of the control room: when there is air conditioning, it should be 3.00~3.60m; when there is no air conditioning, it should not be less than 3.30m. The net height of the control room of a distributed control system should be 3.00m.
3.2.5 The control room should be equipped with a suspended ceiling. There should be enough space in the suspended ceiling for laying air ducts, cables, pipelines and concealed lamps to meet their installation and maintenance requirements. The clearance should not be less than 0.60m.
Large and medium-sized control rooms with frame-type semi-analog panels and instrument panels can be capped; control rooms with channel-type instrument panels and natural ventilation should not be capped. 3.3 Indoor environment
3.3.1 The indoor environment of the control room should meet the environmental requirements of the instruments and the working conditions of the operators.
3.3.2·In control rooms that are mainly heated by radiators and naturally ventilated, the room temperature should be 15~20℃ in winter and 25~30℃ in summer. 3.3.3 Air conditioning can be used in control rooms that meet one of the following conditions: 3.3.3.1 Large and medium-sized control rooms and distributed control system control rooms that mainly use electronic instruments:
3.3.3.2 Summer ventilation When the calculated outdoor temperature is higher than 32℃ or the relative humidity is greater than 80%, and natural ventilation cannot meet the requirements; 3.3.3.3 When the area is windy or dusty or the surrounding environment is bad and it is not allowed to open doors and windows frequently.
3.3.4 The room temperature of the control room using air conditioning: in winter, it should be 20±2℃, in summer, it should be 233℃, and the relative humidity should be 45%~65%. 3.3.5 Distributed control system control rooms should take temperature and humidity adjustment measures. The temperature should be?23±3℃, and the temperature change rate should not be greater than 3℃/h. The relative humidity should be 50%±10%, and the relative humidity change rate should not be greater than 6%/h. The temperature of the computer system should be 23 ± 1 ° C, and the temperature change rate should not be greater than 2 ° C / h; the relative humidity should be 50% ± 10%, and the relative humidity change rate should not be greater than 6% / h. 6
3.3.6. Indoor lighting level: the main control room should not be lower than ear level, and the sub-control room should not be lower than hand level.
3.3.6.1 When natural lighting is used, the instrument panel or operating table should not be directly exposed to sunlight and the incident light should not be dazzling or produce glare. Otherwise, sunshade measures should be taken. 3.3.6.2 For control rooms that are mainly lit by natural lighting, the lighting area should not be less than 1/3 of the floor area.
3.3.6.3 The operating room and cabinet room of the distributed control system control room should be mainly artificially lit, supplemented by natural lighting.
3.3.7: Indoor lighting should have uniform illumination, soft light and no glare. The lighting method and lamp arrangement should ensure that the instrument panel and operating table receive the maximum illumination, and no shadow should appear when the operator is close to the panel. For color display screens, the light source shall not directly illuminate the screen from behind the operator, and reflection and reflected glare should be controlled. According to functional requirements and usage conditions, the standard value of illumination (1x) on the working surface 3.3.7.1
0.75m above the ground in the control room can be selected from the following levels: operation room, computer room 300, 200
control room
cabinet room
auxiliary machine room
3.3.7.2 Fluorescent lamps and mixed light lamps should be selected as light sources. 3.3.7.3·The lighting fixtures should be simple in style, not easy to accumulate dust, easy to maintain and should be concealed. 3.3.8: Emergency lighting system must be installed in the control room, and the standard value of lighting in the front area of the panel should be 3050x.
The noise standard in the control room should not be greater than 60db (A). 3.3.9
3.4 Indoor decoration and building structure
3.4.1 Indoor decoration materials and building structure should be based on environmental characteristics and comprehensively consider fire prevention, explosion prevention, dust prevention, moisture prevention, sound insulation, heat insulation and other requirements. 3.4.2 The floor should meet the following requirements:
3.4.2.1 The floor should be flat and dust-free. The surface layer should be made of materials with smooth surface, easy to clean and non-staticWww.bzxZ.net
3.4.2.2 Anti-static raised floors should be used in the operation room and cabinet room of the control room of the distributed control system, as well as in the control room of the production equipment using computers and programmable controllers.
(1) The height of the raised floor should be 0.30-0.50m;(2) When ventilation pipes or water pipes need to be laid under the raised floor, proper drainage measures should be taken;
(3) The base floor under the raised floor should be flat and dust-free. 3.4.2.3 The elevation difference between the control room floor and the outdoor floor shall not be less than 0.30m. When the device may emit flammable gases heavier than air, the elevation difference shall not be less than 0.60m. 3.4.3 The elevation difference between the indoor trench bottom and the outdoor trench bottom of the pipe trench and cable trench entering the control room shall not be less than 0.3m. The entrance and the hole through the wall shall be filled and sealed. 3.4.4 The wall surface of the control room shall be flat, free of dust, easy to clean and non-reflective. 3.4.5 The holes through the wall or floor of the overhead electric (pipe) cable entering the control room shall be filled and sealed.
The inner surface of the cable interlayer and the pipe well should be plastered. 3.4.6
The suspended ceiling should be made of lightweight, flame-retardant materials, and its fire resistance limit should not be less than 3.4.8 The selection of door and window types and materials should meet the following requirements 3.4.8.1 Doors and windows should be selected from national standard drawings, general drawings of the project location or standardized products: For self-designed doors and windows, their material specifications and node structures should be consistent with standard drawings, general drawings or standardized products:
3.4.8.2 The selection of door and window materials should meet the requirements of use, safety and easy cleaning.
(1) For control rooms located in places with explosion or fire hazards, the external doors and windows should be non-combustible, and the internal doors can be flame-retardant;
(2) For control rooms located in places with explosion or fire hazards, the external door and window glass should be 81 The indoor environment of the control room should be able to meet the environmental requirements of the instrument and the working conditions of the operators.
3.3.2· For control rooms that are mainly heated by radiators and naturally ventilated, the room temperature should be 15~20℃ in winter and 25~30℃ in summer. 3.3.3 Air conditioning can be used in control rooms that meet one of the following conditions: 3.3.3.1 Large and medium-sized control rooms and distributed control system control rooms that mainly use electronic instruments:
3.3.3.2 Summer ventilation When the outdoor calculated temperature is higher than 32℃ or the relative humidity is greater than 80%, and natural ventilation cannot meet the requirements; 3.3.3.3 When the area is windy or dusty or the surrounding environment is bad and it is not allowed to open the doors and windows frequently.
3.3.4 The room temperature of the control room using air conditioning: It should be 20±2℃ in winter and 233℃ in summer, and the relative humidity should be 45%~65%. 3.3.5 Temperature and humidity adjustment measures should be taken in the distributed control system control room. The temperature should be 23±3℃, the temperature change rate should not be greater than 3℃/h, the relative humidity should be 50%±10%, and the relative humidity change rate should not be greater than 6%/h. The temperature of the computer system should be 23±1℃, the temperature change rate should not be greater than 2℃/h; the relative humidity should be 50%±10%, and the relative humidity change rate should not be greater than 6%/h. 6
3.3.6. Indoor lighting level: the main control room should not be lower than ear level, and the sub-control room should not be lower than hand level.
3.3.6.1 When natural lighting is used, the instrument panel or operating table should not be directly exposed to sunlight and the incident light should not be dazzling or produce glare. Otherwise, sunshade measures should be taken. 3.3.6.2 For control rooms that are mainly lit by natural lighting, the lighting area should not be less than 1/3 of the floor area.
3.3.6.3 The operating room and cabinet room of the distributed control system control room should be mainly artificially lit, supplemented by natural lighting.
3.3.7: Indoor lighting should be uniform, with soft light and no glare. The lighting method and lamp arrangement should maximize the illumination of the instrument panel and the operating table, and no shadow should appear when the operator is close to the panel. For color display screens, the light source shall not directly illuminate the screen from behind the operator, and reflection and reflected glare should be controlled. According to functional requirements and usage conditions, the standard value of illumination (1x) on the working surface of the control room at 3. 3. 7.1
0.75m from the ground can be selected from the following levels: operation room, computer room 300, 200
control room
cabinet room
auxiliary machine room
3.3.7.2 The light source should be fluorescent lamps and mixed light lamps. 3.3.7.3·The lighting fixtures should be simple in style, not easy to accumulate dust, easy to maintain and should be concealed. 3.3.8: Emergency lighting system must be installed in the control room, and the standard lighting value of the front area should be 3050x.
The noise standard in the control room should not be greater than 60db (A). 3.3.9
3.4 Indoor decoration and building structure
3.4.1·Indoor decoration materials and building structure should be based on environmental characteristics, taking into account fire prevention, explosion prevention, dust prevention, moisture prevention, sound insulation, heat insulation and other requirements. 3.4.2'The floor should meet the following requirements:
3.4.2.1 The floor should be flat and dust-free. The surface layer should be made of materials with smooth surface, easy to clean and non-static
3.4.2.2 Anti-static raised floors should be used in the operation room and cabinet room of the control room of the distributed control system, as well as the floor of the control room of the production equipment using computers and programmable controllers.
(1) The height of the raised floor should be 0.30-0.50m; (2) When ventilation pipes or water pipes need to be laid under the raised floor, proper drainage measures should be taken;
(3) The base floor under the raised floor should be flat and dust-free. 3.4.2.3 The elevation difference between the control room floor and the outdoor floor shall not be less than 0.30m. When the device may emit flammable gases heavier than air, the elevation difference shall not be less than 0.60m. 3.4.3 The elevation difference between the indoor trench bottom and the outdoor trench bottom of the pipe trench and cable trench entering the control room shall not be less than 0.3m, and the entrance and the hole through the wall shall be filled and sealed. 3.4.4 The wall surface of the control room shall be flat, dust-free, easy to clean and non-reflective. 3.4.5 The holes through the wall or floor of the overhead laid electric (pipe) cable entering the control room shall be filled and sealed.
The inner surface of the cable interlayer and the pipe shaft should be plastered. 3.4.6
The suspended ceiling should be made of lightweight, flame-retardant materials, and its fire resistance limit should not be less than 3.4.8 The selection of door and window types and materials should meet the following requirements 3.4.8.1 Doors and windows should use national standard drawings, general drawings of the project location or standardized products: For self-designed doors and windows, their material specifications and node structures should be consistent with standard drawings, general drawings or standardized products:
3.4.8.2 The selection of door and window materials should meet the requirements of use, safety and easy cleaning.
(1) For control rooms located in places with explosion or fire hazards, the external doors and windows should be non-combustible, and the internal doors can be flame-retardant;
(2) For control rooms located in places with explosion or fire hazards, the external door and window glass should be 81 The indoor environment of the control room should be able to meet the environmental requirements of the instrument and the working conditions of the operators.
3.3.2· For control rooms that are mainly heated by radiators and naturally ventilated, the room temperature should be 15~20℃ in winter and 25~30℃ in summer. 3.3.3 Air conditioning can be used in control rooms that meet one of the following conditions: 3.3.3.1 Large and medium-sized control rooms and distributed control system control rooms that mainly use electronic instruments:
3.3.3.2 Summer ventilation When the outdoor calculated temperature is higher than 32℃ or the relative humidity is greater than 80%, and natural ventilation cannot meet the requirements; 3.3.3.3 When the area is windy or dusty or the surrounding environment is bad and it is not allowed to open the doors and windows frequently.
3.3.4 The room temperature of the control room using air conditioning: It should be 20±2℃ in winter and 233℃ in summer, and the relative humidity should be 45%~65%. 3.3.5 Temperature and humidity adjustment measures should be taken in the distributed control system control room. The temperature should be 23±3℃, the temperature change rate should not be greater than 3℃/h, the relative humidity should be 50%±10%, and the relative humidity change rate should not be greater than 6%/h. The temperature of the computer system should be 23±1℃, the temperature change rate should not be greater than 2℃/h; the relative humidity should be 50%±10%, and the relative humidity change rate should not be greater than 6%/h. 6
3.3.6. Indoor lighting level: the main control room should not be lower than ear level, and the sub-control room should not be lower than hand level.
3.3.6.1 When natural lighting is used, the instrument panel or operating table should not be directly exposed to sunlight and the incident light should not be dazzling or produce glare. Otherwise, sunshade measures should be taken. 3.3.6.2 For control rooms that are mainly lit by natural lighting, the lighting area should not be less than 1/3 of the floor area.
3.3.6.3 The operating room and cabinet room of the distributed control system control room should be mainly artificially lit, supplemented by natural lighting.
3.3.7: Indoor lighting should be uniform, with soft light and no glare. The lighting method and lamp arrangement should maximize the illumination of the instrument panel and the operating table, and no shadow should appear when the operator is close to the panel. For color display screens, the light source shall not directly illuminate the screen from behind the operator, and reflection and reflected glare should be controlled. According to functional requirements and usage conditions, the standard value of illumination (1x) on the working surface of the control room at 3. 3. 7.1
0.75m from the ground can be selected from the following levels: operation room, computer room 300, 200
control room
cabinet room
auxiliary machine room
3.3.7.2 The light source should be fluorescent lamps and mixed light lamps. 3.3.7.3·The lighting fixtures should be simple in style, not easy to accumulate dust, easy to maintain and should be concealed. 3.3.8: Emergency lighting system must be installed in the control room, and the standard lighting value of the front area should be 3050x.
The noise standard in the control room should not be greater than 60db (A). 3.3.9
3.4 Indoor decoration and building structure
3.4.1·Indoor decoration materials and building structure should be based on environmental characteristics, taking into account fire prevention, explosion prevention, dust prevention, moisture prevention, sound insulation, heat insulation and other requirements. 3.4.2'The floor should meet the following requirements:
3.4.2.1 The floor should be flat and dust-free. The surface layer should be made of materials with smooth surface, easy to clean and non-static
3.4.2.2 Anti-static raised floors should be used in the operation room and cabinet room of the control room of the distributed control system, as well as the floor of the control room of the production equipment using computers and programmable controllers.
(1) The height of the raised floor should be 0.30-0.50m; (2) When ventilation pipes or water pipes need to be laid under the raised floor, proper drainage measures should be taken;
(3) The base floor under the raised floor should be flat and dust-free. 3.4.2.3 The elevation difference between the control room floor and the outdoor floor shall not be less than 0.30m. When the device may emit flammable gases heavier than air, the elevation difference shall not be less than 0.60m. 3.4.3 The elevation difference between the indoor trench bottom and the outdoor trench bottom of the pipe trench and cable trench entering the control room shall not be less than 0.3m, and the entrance and the hole through the wall shall be filled and sealed. 3.4.4 The wall surface of the control room shall be flat, dust-free, easy to clean and non-reflective. 3.4.5 The holes through the wall or floor of the overhead laid electric (pipe) cable entering the control room shall be filled and sealed.
The inner surface of the cable interlayer and the pipe shaft should be plastered. 3.4.6
The suspended ceiling should be made of lightweight, flame-retardant materials, and its fire resistance limit should not be less than 3.4.8 The selection of door and window types and materials should meet the following requirements 3.4.8.1 Doors and windows should use national standard drawings, general drawings of the project location or standardized products: For self-designed doors and windows, their material specifications and node structures should be consistent with standard drawings, general drawings or standardized products:
3.4.8.2 The selection of door and window materials should meet the requirements of use, safety and easy cleaning.
(1) For control rooms located in places with explosion or fire hazards, the external doors and windows should be non-combustible, and the internal doors can be flame-retardant;
(2) For control rooms located in places with explosion or fire hazards, the external door and window glass should be 830m. When the device may emit flammable gas heavier than air, the height difference should not be less than 0.60m. 3.4.3 For the pipe trench and cable trench entering the control room, the elevation difference between the indoor trench bottom and the outdoor trench bottom should not be less than 0.3m. The entrance and the hole through the wall should be filled and sealed. 3.4.4 The wall surface of the control room should be flat, free of dust, easy to clean and non-reflective. 3.4.5 The holes through the wall or floor of the overhead electric (pipe) cable entering the control room should be filled and sealed.
The inner surface of the cable interlayer and the pipe well should be plastered. 3.4.6
The suspended ceiling should be made of lightweight, flame-retardant materials, and its fire resistance limit should not be less than 3.4.8 The selection of door and window types and materials should meet the following requirements 3.4.8.1 Doors and windows should be selected from national standard drawings, general drawings of the project location or standardized products: For self-designed doors and windows, their material specifications and node structures should be consistent with standard drawings, general drawings or standardized products:
3.4.8.2 The selection of door and window materials should meet the requirements of use, safety and easy cleaning.
(1) For control rooms located in places with explosion or fire hazards, the external doors and windows should be non-combustible, and the internal doors can be flame-retardant;
(2) For control rooms located in places with explosion or fire hazards, the external door and window glass should be 830m. When the device may emit flammable gas heavier than air, the height difference should not be less than 0.60m. 3.4.3 For the pipe trench and cable trench entering the control room, the elevation difference between the indoor trench bottom and the outdoor trench bottom should not be less than 0.3m. The entrance and the hole through the wall should be filled and sealed. 3.4.4 The wall surface of the control room should be flat, free of dust, easy to clean and non-reflective. 3.4.5 The holes through the wall or floor of the overhead electric (pipe) cable entering the control room should be filled and sealed.
The inner surface of the cable interlayer and the pipe well should be plastered. 3.4.6
The suspended ceiling should be made of lightweight, flame-retardant materials, and its fire resistance limit should not be less than 3.4.8 The selection of door and window types and materials should meet the following requirements 3.4.8.1 Doors and windows should be selected from national standard drawings, general drawings of the project location or standardized products: For self-designed doors and windows, their material specifications and node structures should be consistent with standard drawings, general drawings or standardized products:
3.4.8.2 The selection of door and window materials should meet the requirements of use, safety and easy cleaning.
(1) For control rooms located in places with explosion or fire hazards, the external doors and windows should be non-combustible, and the internal doors can be flame-retardant;
(2) For control rooms located in places with explosion or fire hazards, the external door and window glass should be 8
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