SY 5719-1995 Regulations on the Safety Management of Natural Gas Condensate
Some standard content:
Petroleum and Natural Gas Industry Standard SY 5719--1995
Safety Management Regulations for Natural Gas Condensate
Published on July 13, 1995
China National Petroleum Corporation
Implementation on December 20, 1995
Shichi Natural Gas Industry has been producing oil and gas, liquefied petroleum gas and stable light hydrocarbons from the condensate of oilfield associated gas and gas for use. Since the composition of natural gas condensate varies with the raw gas and process, there is no safety management standard for natural gas condensate in China. Some units and individuals mistake it for normal pressure liquid, which has caused a big accident. In order to strengthen the safety management of natural gas condensate production, storage, filling, transportation, use and regular inspection of equipment, this standard is specially formulated. This standard is proposed and managed by the Petroleum Industry Safety Professional Standardization Technical Committee. Drafting unit of this standard: Boiler and Pressure Vessel Inspection Institute of Daqing Petroleum Administration Bureau. The main drafters of this standard are Liu Jingxuan, Wang Xiufeng, Gao Tiebin. 1. Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Safety Management Regulations for Natural Gas Condensate
SY 5719—1995
This standard specifies the basic safety requirements for the production, storage, filling, transportation, use and regular inspection of equipment for natural gas condensate. This standard is applicable to all units and departments of petroleum enterprises that produce, store and use natural gas condensate. 2. Reference standards
The provisions contained in the following standards constitute the provisions of this standard through the use of the numbers in this standard. At the time of publication of the standard, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. BJ57—83 Code for Lightning Protection Design of Buildings
GBJ140-90 Code for Design of Fire Extinguishers in BuildingsGR 150-89
Steel Pressure Vessels
GB151—89Steel Shell and Tube Heat Exchangers
GB3836.1--83General Requirements for Explosion-proof Electrical Equipment for Explosive AtmospheresGB 9053--88
Stable Light Hydrocarbons
GB 12158-90
General Guidelines for Preventing Electrostatic Accidents
GB13348—92 Safety Regulations for Electrostatics of Liquid Petroleum ProductsGB50160--92 Fire Protection Code for Design of Petrochemical EnterprisesGB50183-93 Fire Protection Code for Design of Crude Oil and Natural Gas ProjectSY5225-1994 Fire and Explosion Prevention and Safety Management Regulations for Drilling, Development, Storage and Transportation of Petroleum and Natural GasSY5845-93 Safety Management Regulations for Special Containers in Oil FieldSY5858--93 Fire Safety Regulations for Petroleum EnterprisesSY 5985--94 Safety Management Regulations for Liquefied Petroleum GasSY/T 6070-94 Operation and management specifications for light hydrocarbon storage facilities Safety technical supervision regulations for pressure vessels Document No. 8 of Lao Guozi [1990] Steam boiler safety technical supervision regulations Document No. 4 of Lao Ren Guozi [1987] Hot water boiler safety technical supervision regulations Document No. 8 of Lao Ren Guozi [1991] Safety management regulations for liquefied petroleum gas tankers (81) Document No. 1 of Lao Zong Guozi 3 Definitions
This standard adopts the following definitions
Natural gas condensate: A general term for hydrocarbon mixtures recovered from natural gas. Generally includes ethane, liquefied petroleum gas and natural gasoline 4 Production [station] Safety design
4.1 The fire safety design of the (station) shall comply with the relevant provisions of GR50183. 4.2 The various process towers, vessels and tanks of condensate in the plant (station) shall be designed in accordance with GB150 and GB151. The design pressure can be determined according to the maximum working pressure that the medium in the container may reach under the process and environmental conditions. The material of the storage tank in cold areas can be selected according to Appendix C of GB150
Approved by China National Petroleum Corporation on July 13, 1995 and implemented on December 20, 1995
SY 57191995
4.3 The general safety technical requirements of the plant (station) shall comply with the relevant provisions of SY5985: the fire extinguishers in the station shall comply with the relevant provisions of GB140.
4.4 The plant (station) shall have lightning protection and anti-static devices, which shall comply with the relevant provisions of GB12158.GB13348 and GBJ57: the grounding resistance of the lightning protection system shall not be greater than 100: the grounding resistance of the anti-static system shall not be greater than 1002: 4.5 The design of electrical equipment in the explosion-proof area shall comply with the requirements of (GiB3836.1, storage tank area, pump room , the process workshop should be equipped with a flammable hydrogen leakage alarm device. 4.6 The design of the new plant (station) should comply with the "three simultaneous" approval procedures. Note: "Three Simultaneous" means new construction, renovation, and expansion projects. The dynamic protection facilities and the main building should be designed, constructed, and put into production at the same time. $Safety Production Preparation
5.1 "Three Simultaneous Acceptance"
The construction of the new plant (station) strictly implements the "three simultaneous" acceptance procedures for basic construction to ensure the construction quality. When the project is completed: the construction unit should deliver complete completion and equipment information, and report to the relevant departments for acceptance. Only after passing the acceptance can it be put into trial operation. 5.2 File establishment for boilers and pressure vessels
The boilers and pressure vessels installed in the new plant (station) shall be inspected, filed, registered, and accepted by the production management department and the power department, and shall be put into trial operation only after obtaining the operation license: 5.3 Establish management system
Various safety management systems shall be established before the trial operation of the new plant (station): a) Job safety responsibility system; b) Equipment safety technical operating procedures; c) Safety and fire prevention system; d) Handover system; t||eInvitation inspection system;
Gate equipment technical inspection and maintenance system 5.4 Training and certification of on-the-job personnel
In addition to technical training, on-the-job personnel of new plants (stations) shall pass the training examination of the safety department and obtain the on-the-job safety operation certificate 5.5 Trial operation
5.5.1 The commissioning and trial operation plan of the new plant (station) shall be reviewed and signed by the safety and technical person in charge 5.5.2 Before the new plant (station) is put into operation, the system shall be purged and replaced to ensure that the oxygen content in the system is less than 2%. 5.3. 3. The single-machine and joint test operation of the new plant (station) should be unified and directed: strictly follow the start-up plan and procedures. 5. The safety inspection of the new plant (station) includes the following: a) Whether the pressure gauges, thermometers, liquid level gauges and safety valves of the entire system are complete and have been calibrated; b) Whether various safety signs are complete: c) Whether the fire passages in the new plant (station) are unobstructed; d) Whether the fire-fighting equipment is complete and whether the personnel have mastered the use of the fire-fighting equipment; e) Combustible gas in the flammable and explosive area Whether the alarm system is intact and reliable, whether the ventilation facilities in the flammable and explosive workshop are intact) Whether all explosion-proof gas equipment and power lines in the factory (station) comply with relevant explosion-proof regulations, and whether the communication facilities at each post are complete;
) Whether the venting and pressure relief system is unobstructed, and whether the torch ignition device is intact; ll) Whether the labor protection equipment is fully equipped, whether the post personnel are dressed and on duty; whether there are emergency rescue facilities; ) Whether the containers of harmful media (such as methanol, liquid ammonia, etc.) are placed reasonably, and whether the employees understand the nature and hazards of these media.
6 Production and maintenance
6.1 Production
SY 5719-1995
6.1.1 Flammable and explosive media shall not run, bubble, drip, leak or enter the space or the ground to prevent air from penetrating into the negative pressure operation harmony. In the device and pipeline, the concentration of flammable and explosive media in the air should be strictly controlled so that it does not exceed 25% of the lower explosion limit. 6.1.2 Regularly check the combustible gas alarm device and adjust it regularly to ensure that it is intact and accurate. 6.1.3 During the production process, operations should be carried out according to the operating procedures to avoid over-temperature and over-pressure operation. 6.1.4 Daily inspection and maintenance of various valves should be strengthened to ensure that the valves are tight, leak-proof, and flexible. 6.1.5 Strengthen the monitoring and maintenance of instruments and meters to ensure that the automatic control display system of the device is accurate and reliable. 6.1.6 Strengthen the safety management of electricity use to prevent electrical equipment from leakage, overload and flash fire. 6.1.7 When methanol needs to be added to the device and external transmission pipeline, it should be carried out according to the operating procedures, and the operator needs to wear a protective mask, gloves, etc.
The heating furnace system of the device should strictly control the pressure of the fuel, the air and the temperature of each point in the furnace barrier, and the ignition procedure should be implemented.
The liquid level of the dewatering marrow should be effectively controlled, and monitoring should be strengthened during drainage to prevent natural gas condensate from being discharged into the sewage system. 6.1.10
Inspection of water discharge points should be strengthened during production. During winter shutdown: anti-freeze measures should be taken for the cooling water system. 6.1.11
When the natural gas condensate in the device needs to be heated and thawed due to freezing of the pipeline due to water, it is prohibited to use open flames for baking. The outlet gas temperature of the air cooler should be controlled to avoid the formation of hydrates and ice that block the pipe. 6.1.12
The instrument air system should be regularly analyzed for dew point to avoid high water content in the instrument air causing the instrument transmission mechanism to malfunction. 6.1.14 When excessive low-temperature condensate enters the flare system, it should be handled in time. 6.2 Maintenance
6.2.1 The maintenance organization should have dedicated (part-time) personnel responsible for maintenance safety management. 6.2.2 Detailed maintenance safety measures should be formulated in combination with the actual situation of the device being maintained, including safety regulations for personnel, vehicles, protective equipment, high altitude and cross-operation. 6.2.3 Formulate a practical maintenance plan, which can be organized and implemented only after approval by the technical person in charge. 6.2,4 The maintenance and inspection of boilers, pressure vessels and their safety accessories shall be carried out in accordance with the relevant regulations such as the "Safety Technical Supervision Regulations for Pressure Vessels", "Safety Technical Supervision Regulations for Steam Boilers", and "Safety Technical Supervision Regulations for Hot Water Boilers". 6.2.5 Safety education should be provided to maintenance personnel and personnel of cooperative units before maintenance work. 6.2.6
On-site operators should strictly follow the safety operating procedures. Firefighting equipment and facilities shall not be misappropriated at will, and fire roads should be kept unobstructed. 6.2.7bzxz.net
Explosion-proof tools should be used in flammable and explosive places. 6.2.9
It is strictly forbidden to connect temporary power lines without authorization.
When entering towers, vessels, tanks and other containers for operation: the gas in the container should be sampled and analyzed regularly, and the oxygen content should generally be not less than 18%: the flammable gas content should be lower than 10% of the lower explosion limit, and explosion testing should be carried out, protective measures should be implemented, and special operation work permits should be processed. Sulfides in containers and heat exchangers should be cleaned up, and the equipment should be removed and buried in time. 6.2.11
There should be obvious safety warning signs in the workplace. 6.2.13
When performing hot work on site, SY5858 should be followed. 6.2.14 After the device is stopped and replaced, the plate should be installed according to the plate drawing formulated in the maintenance plan. Each plate should be loaded and unloaded by a dedicated person, and records should be kept.
7 Storage and Transportation
7.1 Storage
7.1.1 Safety requirements for storage shall be in accordance with SY/T60703
SY5719-1995
7.1.2 The ground depth of the external transmission pipeline shall exceed the local permafrost layer, and a spare line should be provided: and regular ball inspections shall be carried out. A dedicated person shall be appointed to be responsible for the external transmission pipeline, and the invitation line system shall be strictly implemented. 7.1.3 The pressure of the receiving tank at the end of the pipeline shall be controlled to be 100kPa or more higher than the saturated vapor pressure of natural gas condensate. 7.1.4 When natural gas condensate is transported by pipeline in winter, an appropriate amount of antifreeze may be added as needed. 7.2 Filling Station
7.2.1 The design of the filling station shall strictly comply with the relevant requirements of GB50160, GB50183 and SY5225. The filling station should be arranged at the edge of the plant or outside the plant on the upwind side of the natural gas condensate plant (station) and the storage tank area with the lowest wind frequency throughout the year. It is advisable to set up a solid wall to form an independent area with good ventilation.
7.2.2 The entrance and exit of the loading yard should be set separately. When the entrance and exit are used together, the station should have a return yard and 7.2.3 The loading yard should use cast-in-place concrete floor, which should have an outward slope of not less than 0.05. Asphalt floor shall not be used. 7.2.4 The distance between loading and unloading parking spaces should not be less than 411. 7.2.5 When there is no buffer tank in the station, an emergency shut-off valve that is easy to operate should be installed on the loading and unloading pipeline 10m away from the unloading parking space. Natural Gas Condensate Tank Truck
7.3.1 Structural design of natural gas condensate tank truck. Manufacturing, filling and transportation shall comply with the relevant provisions of the "Regulations on Safety Management of Liquefied Petroleum Gas Tank Trucks" issued by the former State Administration of Labor. 7.3.2 The design pressure of natural gas condensate tank trucks can be divided into four levels, namely 1.8MPa, 1.0MPa, 0.6MPa and normal pressure, but normal pressure tank trucks should undergo a 0.2MPa water pressure test.
7.3.3 Each side of the tank truck should be equipped with at least one powder fire extinguisher of 5k or more or one 1211 fire extinguisher of 4kg or more. 7.3.4 The tank truck should be equipped with static discharge facilities and exhaust fire extinguishers. 7.4 Filling of natural gas condensate tank trucks
7.4.1 The filling unit of natural gas condensate tank trucks should have a dedicated person to inspect the tank truck before filling and keep records. In any of the following situations: The following items shall not be filled:
a) The tank truck has exceeded the inspection period but has not been inspected; b) The paint color, nameplate and logo of the tank truck do not comply with the regulations, do not comply with the medium loaded or fall off and are difficult to identify; fire prevention, explosion-proof devices and safety accessories are not gold, damaged, detached or do not comply with regulations; d) It is not clear what kind of medium has been loaded or there is no residual pressure in the tank; e) The tank body has defects in the appearance inspection and cannot guarantee safe use or the accessories have leakage; the tank truck does not have a use certificate, escort certificate and driver's certificate; g) The fixing device between the tank body and the vehicle is not reliable or damaged. 7.4.2 The tank truck should be parked at the designated position, the vehicle should be locked, and the engine should be stopped. 7.4.3 It is strictly forbidden to simmer on site. Operators should wear anti-static clothing and shoes and use explosion-proof tools. When loading, the tank truck tank and condensate pipeline should be electrostatically grounded.
7.4.4 The number of vehicles that can be filled at the same time shall not exceed two, and the height difference between the two vehicles on the ground where they are parked shall not exceed 10cm. During filling, loading and unloading shall be carried out at the same time: the vehicle shall be started at the same time, and the vehicle shall not be started during the filling process. Before starting the vehicle, a portable flammable gas alarm shall be used to check the surrounding flammable gas content: the vehicle can only be started after it is qualified.
The filling volume of the tank truck shall not exceed 85% of the tank truck tank volume. 7.4.51
7.4.6 Natural gas condensate with a saturated vapor pressure equivalent to the light hydrocarbon No. Ⅱ in GB9053 can be filled and transported by normal pressure tank trucks or barrels. Condensate exceeding 1.8MPa can only be transported by pipeline. Natural gas condensate of other pressures shall be filled and transported in a closed tank truck of the corresponding pressure grade. 7.4.7 Tank trucks that open the door to fill natural gas condensate should have a metering device, and the filling personnel should not check the gauge at the tank mouth: the filling pipe should extend to the bottom of the tank and be fixed, and the filling method of injection shall not be used. The flow rate of the filling condensate should be controlled at no more than 1.3m/s. 7.4.8 For new tank trucks or tank trucks that are filled for the first time after overhaul, vacuum or inert gas replacement should be carried out before filling. The vacuum degree should not be lower than &6.66kPa or the oxygen content of the gas in the tank should not be greater than 3%. 7.4.9 The filling record should be filled carefully when filling a tank truck. The content includes 4
a) Tank truck user unit:
b) Vehicle model, vehicle number;
c) Filling medium;
d Filling date
e) Actual filling volume:
① Signatures of the filler, re-inspector, and escort, SY 5719-1995
7.4.1 (When the following situations occur, the tank truck should immediately stop loading and unloading operations and take appropriate measures: a) There is strong weather;
b) There is a fire nearby
e The leakage of natural gas condensate is detected:
d) The pressure inside the tank is abnormal:
) Other factors that are not considered
7.5 Transportation and parking of tank trucks
7.5.1 Tank trucks should have obvious "dangerous goods" signs and drive along the designated route. During transportation, other people are not allowed to ride and other goods are not allowed to be consigned with the vehicle.
7.5.2 Empty tank parking spaces are parked in garages with special ventilation facilities. Tank trucks filled with liquid are not allowed to enter the garage, and the driver is not allowed to use any excuse to drive the tank truck to do other things.
7.5.3 Tank trucks should be equipped with fixed drivers and escorts. The drivers and escorts of tank trucks should be familiar with these regulations and the following safety and technical contents:
a) Physical and chemical properties of natural gas condensate; b) Safety knowledge of urban and highway transportation
C) Technical performance and pressure level of tank trucks; Safety operation procedures for loading and unloading operations;
e) Knowledge of fire prevention and fire fighting and emergency accident handling methods. 7.5.4 The drivers and escorts of tank trucks should also obtain an operation certificate issued by the competent department. 7.5.5 Tank trucks should drive at low speed when driving on bad roads. Various tank trucks filled with liquid should drive within half of the clear left and right tilt angles of the vehicle as much as possible.
7.5.6 When the tank truck is parked on the way, the driver and escort shall not stay away from the vehicle at the same time, and shall not park in government agencies, schools, factories, mines, bridges, warehouses and places with dense population. The parking location should be well ventilated and there shall be no buildings within 10m. When stopping for maintenance during the journey, explosion-proof tools must be used, and open flames are not allowed. If the parking time exceeds 6 hours, the local public security department should be contacted, and the vehicle should be parked in a designated safe place. Tank trucks are not allowed to carry other flammable and explosive dangerous goods, and smoking is strictly prohibited on the vehicle. During the journey, pay attention to the pressure and temperature in the tank of the tank truck. When the temperature of the condensate in the tank reaches 38°C, safety measures such as sunshade and cooling should be taken. If the daytime temperature is high in summer, transportation can be changed to nighttime.
8 Regular inspection of tank trucks
8.1 Regular inspection of tank trucks includes inspection of the body and various accessories, 8.2 The periodic inspection of tank trucks is divided into annual inspection and comprehensive inspection. Annual inspection is carried out once a year, and comprehensive inspection is carried out every five years. However, the first surface inspection of new tank trucks should be carried out in the second year after they are put into use. If defects are found in the annual inspection, a surface inspection should be carried out in advance. 8.3 The comprehensive inspection of tank trucks with a design pressure level of 1.8MPa and 1.0MPa shall be carried out by units authorized by the provincial labor department, and the annual inspection of tank trucks with other pressure levels shall be carried out by the boiler pressure vessel inspection institute of the bureau-level unit. 8.4 The inspection of normal pressure trucks shall be carried out in accordance with the relevant provisions of SY5845, and the inspection of tank trucks with other pressure levels shall be carried out in accordance with the relevant provisions of the "Regulations on Safety Management of Liquefied Petroleum Products". 9 Users SY 57191995 9.1 The relevant personnel of the user unit should be familiar with the physical and chemical properties of natural gas condensate. 9.2 Natural gas condensate should be used as a raw material for deep processing and should not be directly used as fuel. 9.3 After the tank truck arrives at the factory (station), the liquid should be unloaded in time. The tank truck shall not be used for storage. 9.4 It is prohibited to use steam to increase the pressure of the tank truck and directly heat the tank truck to unload the liquid. 9.5 After the tank truck is unloaded, there should be residual pressure in the tank. 9.6 In cold areas: When the temperature difference between the inside and outside of the garage is too large, the garage should be supervised and inspected by a dedicated person, and there should be reliable safety pressure relief facilities.
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