GB 50351-2014 English PDFUS$1349.00 · In stock
Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 50351-2014: Code for design of fire-dike in storage tank farm Status: Valid GB 50351: Historical versions
Basic dataStandard ID: GB 50351-2014 (GB50351-2014)Description (Translated English): Code for design of fire-dike in storage tank farm Sector / Industry: National Standard Classification of Chinese Standard: P16;P72 Classification of International Standard: 13.220.20 Word Count Estimation: 61,619 Date of Issue: 3/31/2014 Date of Implementation: 12/1/2014 Older Standard (superseded by this standard): GB 50351-2005 Quoted Standard: GB 50003; GB 50007; GB 50074; GB 50160; GB 50183; GB 50737; GB 50010 Regulation (derived from): Ministry of Housing and Urban-Rural Development Bulletin No. 364 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Summary: This standard applies to new construction and renovation on the ground liquid storage tank area, the expansion project of the fire dike, protective wall design. GB 50351-2014: Code for design of fire-dike in storage tank farm---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.1 General 1.0.1 This specification is formulated in order to reasonably design fire dikes and protective walls and ensure the safety of storage tank farms. 1.0.2 This code is applicable to the design of fire dikes and protective walls in the construction, reconstruction and expansion of above-ground liquid storage tank farms. 1.0.3 The design of fire dikes and protective walls shall be based on meeting various technical requirements, adapt measures to local conditions, and select models reasonably to achieve safe, durable, economical and reasonable effects. 1.0.4 The design of fire dikes and protective walls in storage tank farms shall not only comply with this code, but also comply with the current relevant national standards. 2 terms 2.0.1 tank group A storage tank unit consisting of one or several storage tanks surrounded by fire dikes or protective walls. 2.0.2 storage tank farm A tank area consisting of one or several tank groups. 2.0.3 fire dike fire dike It is a structure used to prevent liquid outflow and fire spread when a leakage accident occurs in a group of flammable and combustible liquid storage tanks under normal pressure, a storage tank group that changes the gaseous state into a liquid state through low temperature under normal pressure conditions, or other liquid dangerous goods storage tank groups. 2.0.4 dike dividing dike It is used to reduce the scope of influence when a small amount of liquid leakage accident occurs in the storage tank in the fire dike, or to reduce the influence scope when a small amount of refrigerated liquid leakage accident occurs in the storage tank group that changes gaseous state to liquid state through low temperature under normal pressure conditions, and a The storage tank group is divided into several partitioned structures. 2.0.5 safety wall It is a structure used to prevent the sinking gas from overflowing when a leakage accident occurs in the storage tank group that changes the gaseous state into a liquid state by pressurization under normal temperature conditions. 2.0.6 dividing wall A structure that divides a storage tank group into several partitions to reduce the impact range before the liquid turns into gas when a small amount of leakage accident occurs in the storage tank in the protective wall. 2.0.7 effective capacity surrounded by dikes The volume that can be effectively used in the fire dike of a storage tank group. 2.0.8 Design height of liquid level The design height of the liquid level in the dike when calculating the effective volume of the fire dike. 2.0.9 Inboard toe line of dike The intersection line between the inner side of the fire dike or its side slope and the designed ground inside the fire dike. 2.0.10 outboard toe line of dike The intersection line between the outside of the fire dike or its side slope and the design ground outside the fire dike. 3 Arrangement of fire dikes and protective walls3.1 General provisions 3.1.1 The selection of fire dikes and protective walls shall be determined according to the properties of the stored liquid medium. 3.1.2 Fire dikes and protective walls should be constructed of non-combustible materials, and must be dense, closed, and leak-proof 3.1.3 The fire protection performance of the fire embankment shall comply with the current national standards "Code for Fire Protection of Petroleum and Natural Gas Engineering Design" GB 50183, "Code for Design of Petroleum Reserve Depot" GB 50737, "Code for Design of Petroleum Depot" GB 50074, "Code for Fire Protection Design of Petrochemical Enterprises" "Relevant regulations of GB 50160. 3.1.4 All kinds of pipelines and cables entering and leaving the storage tank group should cross from the top of fire dikes and protective walls or pass below the ground. When it is necessary to pass through fire dikes and protective walls, casings shall be provided and shall be tightly sealed with non-combustible materials, or fixed short pipes with flexible hose sealing connections at both ends. 3.1.5 Open drainage ditches should be set up in fire dikes and inside the protective walls. 3.1.6 The following requirements shall be met when setting open drainage ditches in fire dikes and protective walls. 1 When constructing drainage ditches along the inner side of the fire embankment without embankment, the distance between the outer side of the ditch wall and the inner embankment line of the fire embankment shall not be less than 0.5m; 2 When constructing drainage ditches along the inner side of the earth embankment or fire embankment with internal embankment, the distance between the outer side of the ditch wall and the footline of the inner side of the earth embankment or the embankment footline of earth embankment shall not be less than 0.8m; 3 When constructing drainage ditches along the protective wall, the distance between the outer side of the ditch wall and the footline of the inner dike of the protective wall shall not be less than 0.5m; 4 Anti-seepage measures shall be adopted for the drainage ditches; 5 The open drainage ditch should be provided with a grille cover plate, and the material of the grille cover plate should have fireproof and anti-corrosion properties. 3.1.7 The fire embankment and protective wall of each storage tank group shall be provided with not less than 2 steps or ramps for pedestrians crossing the embankment, and shall be arranged in different directions. Dikes and partition walls should be provided with pedestrian steps or ramps 3.1.8 The distance between adjacent steps, ramps and ladders of fire dikes should not be greater than 60m, and guardrails should be provided for steps or ramps with a height greater than or equal to 1.2m. 3.2 Layout of fire dikes for oil tank groups 3.2.1 The layout of above-ground oil tanks in the same fire dike shall meet the following requirements. 1 In the same fire dike, it is advisable to arrange oil storage tanks with the same or similar fire risk category (Category AB, B and C A oil storage tanks can be arranged in the same fire dike, but it is not suitable to arrange them with C and B oil tanks). Storage tanks are arranged in the same fire dike), when the volume of a single tank is less than or equal to 1000m3, atmospheric pressure storage tanks with different fire hazard categories can also be arranged in the same fire dike, but they should be separated by dikes; 2 Boiling oil storage tanks and non-boiling oil storage tanks shall not be arranged in the same fire dike, except for pressure relief tanks arranged separately in groups; 3 Atmospheric pressure oil storage tanks shall not be arranged in the same fire dike as liquefied petroleum gas, liquefied natural gas and natural gas condensate storage tanks; 4 The pressure storage tanks for flammable liquids may be arranged in the same fire dike as the full pressure storage tanks for liquefied hydrocarbons; 5 The low-pressure storage tanks for flammable liquids may be arranged in the same fire dike as the atmospheric pressure storage tanks; 6 Above-ground vertical oil tanks, high-level tanks and horizontal tanks should not be arranged in the same fire dike; 7 Storage tanks for storing Class I and Class II toxic liquids shall not be arranged in the same fire dike as other flammable and combustible liquid storage tanks. 3.2.2 The total capacity and quantity of oil tanks in the same fire dike shall meet the following requirements. 1 For fixed-roof oil tanks and mixed arrangements of fixed-roof oil tanks, floating-roof and inner floating-roof oil tanks, the total capacity shall not exceed 120,000m3, and the volume of floating-roof and inner-floating-roof oil tanks may be calculated in half; 2 The total capacity of the floating-roof oil tank in the steel floating plate shall not be greater than 360000m3, and the total capacity of the floating-roof oil tank in the fusible material floating plate shall not be greater than 240000m3; 3 The total capacity of the external floating roof oil tank shall not exceed 600000m3; 4 The number of oil tanks should not exceed 12 when the single tank capacity is greater than or equal to 1000m3, and the number of oil tanks is not limited when the single tank capacity is less than 1000m3 or only Class C and B oil products are stored; 5 There should be no more than 2 rows of oil tanks, but no more than 4 rows of oil tanks for storing Class C and B oil products with a single tank capacity less than 1000m3, and the single tank volume and row number of lubricating oil tanks are not limited. 3.2.3 The distance from the tank wall of the vertical oil tank to the inner footline of the fire dike shall not be less than half the height of the tank wall; the distance from the tank wall of the horizontal oil tank to the inner footline of the fire dike shall not be less than 3m; For oil tanks on the side of the mountain, on the side of the mountain, the distance between the tank wall and the footline of the excavated slope should not be less than 3m. 3.2.4 There should be a fire-fighting road or a fire-fighting open space with a width of not less than 7m between the footlines of the outer embankments of adjacent oil tank groups. 3.2.5 The effective volume inside the fire dike of the oil tank group shall not be less than the nominal capacity of the largest oil tank in the oil tank group. 3.2.6 The top surface of the oil tank group fire dike should be 0.2m higher than the calculated liquid level. The fire embankment of the vertical oil tank group shall not be less than 1.0m higher than the designed floor inside the embankment, and shall not be greater than 3.2m higher than the designed floor outside the embankment or the fire road surface (whichever is lower). The fire dike of the horizontal oil tank group shall not be less than 0.5m higher than the designed floor in the dike. 3.2.7 The effective volume of the oil tank group fire dike shall be calculated according to the following formula. In the formula. V——effective volume of fire dike (m3); A——horizontal projected area enclosed by the center line of the fire dike (m2); Hj——design liquid level height (m); V1——the volume exposed to the ground of the foundation of the largest oil tank within the design liquid level height in the fire dike (m3); V2——the sum of the volume of other oil tanks in the fire dike except the largest oil tank within the design liquid level of the fire dike and the volume of the oil tank foundation exposed to the ground (m3); V3——the sum of the volume of the fire dike and the volume of internal embankment within the design liquid level within the center line of the fire dike (m3); V4——the sum of the volumes of dikes, piping, equipment and other structures within the design liquid level height in the fire dike (m3). 3.2.8 The ground design inside the fire dike shall meet the following requirements. 1 The ground inside the fire embankment shall slope towards the drainage ditches and drainage outlets, and the slope should be 0.5%; 2 The ground inside the fire embankment should be paved with gravel or planted with evergreen turf with a height not exceeding 150mm; 3 Inspection roads shall be set on the ground inside the fire embankment; 4 When the leakage of the oil tank may pollute the groundwater or the surrounding environment, anti-leakage measures shall be taken on the ground inside the embankment. 3.2.9 The drainage facilities in the fire embankment shall meet the following requirements. 1 Water collection facilities shall be set in the fire dike, and the rainwater discharge pipes connected to the water collection facilities shall lead out of the fire dike from below the designed ground in the fire dike, and safe and reliable oil interception and drainage measures shall be taken; 2 When the annual accumulated rainfall is not greater than.200mm or the rainfall can be infiltrated within 24 hours, and there is no possibility of environmental pollution, no rainwater drainage facilities are required. 3.2.10 The design ground inside the fire embankment of the oil tank group should be lower than the road surface or ground of the fire protection road outside the embankment. 3.2.11 When the capacity of a single tank in the oil tank group is greater than or equal to 50000m3, it is advisable to set up the passageway for vehicles entering and leaving the tank group. The road can be single-lane and should pass through the top of the fire embankment. The longitudinal slope of the curve should not be greater than 10%, and the longitudinal slope of the straight road should not be greater than 12%. 3.2.12 The arrangement of the dikes in the oil tank group shall meet the following requirements. 1 When the capacity of a single tank is less than 5000m3, the number of oil tanks in the dike shall not exceed 6; 2 When the capacity of a single tank is equal to or greater than 5000m3 and less than.20000m3, the number of oil tanks in the dike shall not exceed 4; 3 When the capacity of a single tank is equal to or greater than.20000m3 and less than 50000m3, the number of oil tanks in the dike shall not exceed two; 4 When the capacity of a single tank is equal to or greater than 50000m3, the number of oil tanks in the dike shall not exceed one; 5 For boiling oil oil tanks, the number of storage tanks in the dike shall not exceed two; 6 For oil tanks with non-boiling overflow Class C and B oils, the number of storage tanks in the dike is not subject to the above restrictions, and can be set according to specific conditions; 7 The height of the internal dike of the vertical oil tank group should be 0.5m~0.8m, and the height of the internal dike of the horizontal oil tank group should be 0.3m. 3.3 Layout of fire dikes and protective walls for liquefied petroleum gas, natural gas condensate, liquefied natural gas and other tank groups 3.3.1 The design height of fire dikes and protective walls shall meet the following requirements. 1 The fire dike height of fully refrigerated liquefied petroleum gas, natural gas condensate and liquefied natural gas single-proof tank storage tank group shall meet the following requirements. 1) The effective volume in the fire dike shall accommodate the capacity of the largest tank in the storage tank group; 2) The height of the fire dike should be 0.2m higher than the design liquid level. 2 The height of the protective wall of the full-pressure or semi-refrigerated liquefied petroleum gas and natural gas condensate storage tank group should be 0.6m, and the height of the partition wall should be 0.3m. 3.3.2 The distance from the tank wall of fully refrigerated liquefied petroleum gas, natural gas condensate and liquefied natural gas single-proof tanks to the inner embankment line of the fire dike shall not be less than the difference between the maximum liquid level of the storage tank and the height of the fire dike plus the liquid The sum of the gas equivalent pressure heads on the surface; when the height of the fire dike is greater than or equal to the maximum liquid level of the storage tank, the distance is not limited. The distance from the tank wall to the protective wall of the full-pressure or semi-refrigerated liquefied hydrocarbon storage tank shall not be less than 3m. 3.3.3 Between the fire dikes of adjacent liquefied petroleum gas, natural gas condensate and liquefied natural gas single-proof tank storage tank groups, fire-fighting roads shall be provided. 3.3.4 The total capacity and number of storage tanks in the same fire embankment and protective wall shall meet the following requirements. 1 The number of full-pressure or semi-refrigerated storage tanks should not exceed 12 and should not exceed 2 rows, and the total volume of pressure storage tanks for Class A and B liquids with a boiling point lower than 45°C should not exceed 60,000m3; 2 The total capacity of fully refrigerated storage tanks should not exceed.200,000m3, and the number of storage tanks should not exceed 2. 3.3.5 The ground design of fire dikes and protective walls shall meet the following requirements. 1 Cast-in-situ concrete ground shall be used in fire dikes and protective walls, and slope-aspect drainage ditches and outlets with a slope of not less than 0.5% shall be set; 2 The ground in the storage tank group storing acid, alkali and other corrosive media shall be treated with anti-corrosion treatment. 3.3.6 Water collecting facilities shall be set up in the fire embankment and the site inside the protective wall, and drainage facilities that can be controlled to open and close shall be set up. 3.3.7 The setting of dikes and partition walls in the storage tank group shall meet the following requirements. 1 When the total volume of the full-pressure storage tank group is greater than 8000m3, a partition wall shall be installed, and the sum of the volumes of the storage tanks in the partition wall shall not exceed 8000m3, and when the capacity of a single tank is greater than or equal to 5000m3, there shall be one partition for each tank; 2 For the fully refrigerated single-proof tank group, a dike shall be provided for each tank; 3 The total internal volume of the dikes of Class A and B liquid pressure storage tanks with a boiling point lower than 45°C should not be greater than 8000m3, and when the volume of a single tank is greater than or equal to 5000m3, there should be one dike for each tank.4 Type selection and construction of fire dikes4.1 Selection 4.1.1 The type selection of fire dikes should meet the following requirements. 1 Fire dikes should be built with earth, or reinforced concrete fire dikes, masonry fire dikes, and sandwich fire dikes, and mortar-built rubble fire dikes should not be used; 2 Reinforced concrete fire dikes should be used in areas with tight land use and seismic fortification intensity of 8 degrees or above. 4.1.2 The protective wall should adopt masonry structure. 4.2 Structure 4.2.1 The foundation embedding depth of fire dikes and protective walls shall be determined according to factors such as engineering geology, permafrost depth and stability calculation, and shall not be less than 0.5m. 4.2.2 For storage tanks storing acid, alkali and other corrosive media, the inner side of the fire dike body shall be treated with anti-corrosion treatment. Anti-freezing measures shall be taken for fire dikes of fully refrigerated storage tank groups. 4.2.3 When mortar-built rubble fire embankment is used, soil shall be built inside. 4.2.4 The expansion joints of fire dikes, protective walls, dikes and partition walls shall be set according to the changes in building materials, climate characteristics and geological conditions, and shall comply with the following regulations. 1 The setting of expansion joints shall comply with the provisions of the current national standards "Code for Design of Concrete Structures" GB 50010 and "Code for Design of Masonry Structures" GB 50003; 2 Expansion joints should not be located at intersections or corners; 3 The width of the expansion joint should be 30mm~50mm; 4 Expansion joints shall be filled with non-combustible flexible materials or other reliable construction measures shall be taken. 4.2.5 The embankment inside the fire embankment shall meet the following requirements. 1 The height of embankment inside the fire embankment shall be the same as that of the embankment, and the width of the top surface of embankment shall not be less than 300mm. 2 The earth shall be compacted in layers, the slope shall be compacted, and the compaction coef......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 50351-2014_English be delivered?Answer: Upon your order, we will start to translate GB 50351-2014_English as soon as possible, and keep you informed of the progress. 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