SY 5854-1993 Safety regulations for wet steam generators for oil fields
Some standard content:
The People's Republic of China Petroleum and Natural Gas Industry Standard SY5854--93
Safety Regulations for Special Wet Steam Generators for Oil Fields Issued on January 6, 1994
China National Petroleum Corporation
Implementation on June 1, 1994
Main content and scope of application
Quoted standards
Metal materials
Design and structure
Manufacture, installation and maintenance
Main accessories and instruments||t t||Generator operation room
Usage management
Periodic inspection
Appendix A
Appendix B
Steam generator registration form (supplement) Wet steam generator registration certificate (supplement) times
(3)
(each)
:(5)
1 Subject content and scope of application
Petroleum and natural gas industry standard of the People's Republic of China Safety regulations for wet steam generators dedicated to oil fields SY 5854--93
This standard specifies the basic requirements for safety management of design, manufacture, installation, inspection, use, repair, and repair of wet steam generators dedicated to thermal recovery (hereinafter referred to as generators). This standard applies to generators with a rated working pressure less than or equal to 18.1MPa and a rated working temperature of less than or equal to 357°C. 2 Reference standards
GBJ 17
SHJ 1043
Steel structure design code
Technical conditions for heat-resistant ductile iron engineering of tubular heating furnace in oil refinerySYJ 4041
Specification for manufacturing, installation, construction and acceptance of wet steam generator for oil and gas industryGBI11
GB 3811
SYJ 27
GB3805
3 Metal materials
Code for seismic design of buildings
Code for design of cranes
Technical regulations for design of heavy oil gathering, transportation and steam injection systemSafe voltage
3.1 The quality and specifications of the materials of the generator shall comply with the provisions of the corresponding national standards and industry standards. 3.2 The carbon content (olefin analysis, the same below) of the carbon steel and low-gold steel used for welding the pressure components of the generator shall not be less than 0.25%. Under special conditions, if the material with carbon content exceeding 0.25% is used, it must be approved by the chief technical officer of the design unit. The manufacturing and repair unit shall conduct welding performance tests and welding process assessments on such materials. After passing the test, it shall be reported to the superior management department for filing. 3.3 The materials used for steel structures shall comply with the provisions of Chapter 2 of GB17. 3.4 The heat-resistant ductile iron materials used to make the convection tube bundle support plate shall comply with the provisions of SHJ1043. 3.5 When foreign materials are used for the pressure element of the generator, materials allowed by the generator and boiler pressure vessel specifications of the material manufacturing country shall be selected. The scope of use shall comply with the requirements of this standard and have a material quality certificate. 3.6 The use of materials shall be carried out in accordance with the provisions of Articles 51 to 55 of the "Regulations on Safety Technical Supervision of Steam Boilers". 4 Design and Structure
4.1 The design unit of the generator. It must be reported to the departmental competent department for approval or recognition according to the affiliation. 4.2 The design unit of the generator shall provide the user with design drawings, installation and operating instructions, strength calculations of the positive element and safety valve discharge calculations.
4.3 The design master plan (blueprint) of the generator must be stamped with a design qualification seal. The design qualification seal shall indicate the name of the design unit, the name of the technical person in charge, the number of the "Design Unit Approval" and the date of approval. The design master plan shall be signed by the design, verification and review personnel and shall be approved by the technical person in charge of the design unit. 4.4 When the generator and the operating room are built in an area with an earthquake intensity of 7 degrees or more, the seismic load calculation shall be carried out in accordance with GB1I. 4.5 Explosion-proof devices should be installed in the generator.
Approved by China National Petroleum Corporation on January 6, 1994 and implemented on June 1, 1994
SY5854-93
4.6 At least one manhole shall be set in the radiation section, and a fire-watching hole shall be set. 4. The design and installation of the burner should ensure that the flame does not directly contact the tube bundle and the tube clamp when the heat release is the maximum, and it should be easy to disassemble. The noise of the burner should comply with the relevant provisions of the national environmental protection department. 4.8 The strength, rigidity and stability of the generator lifting structure should meet the relevant provisions of GB3811. 4.9 The generator is prohibited from using stamped elbows and butt-welded elbows. 4.10 The generator must be equipped with a device to cut off the fuel supply remotely in the event of a fire. 4,11 The on-board generator should comply with the national regulations on the design, manufacture, inspection and transportation of award-winning vehicles. 5 Manufacturing, installation and repair
5.1 Manufacturing
5.1.1 The generator manufacturing unit must report to the ministerial competent department for approval or recognition according to the affiliation. 5.1.2 The manufacturing unit must strictly implement the specifications and standards formulated by the state and relevant departments, and manufacture in strict accordance with the design drawings. The manufacturing unit must obtain the design modification certificate of the original design unit in advance for the modification of the original design parameters and the substitution of materials for pressure components. Detailed records should be made for the modified parts. 5.1.3 Welders who weld the pressure components of the generator must take the "Test Rules for Boiler and Pressure Vessel Welders" issued by the Ministry of Human Resources and Social Security. Only after obtaining a qualified certificate can they perform welding work within the scope of qualification during the validity period. The manufacturer should establish welder technical and archives.
When the generator leaves the factory, the manufacturer must provide the user with the following technical documents and information: 5.1.4
Complete drawings (if modified on the original blueprint, there must be a confirmation mark of the recipient: technical reviewer): a.
6, product quality certificate (including production certificate, material quality certificate, welding quality certificate and pressure test record); c,
Product safety and quality supervision inspection certificate.
The manufacturer must install a product metal nameplate at a conspicuous position on the generator. Generators with a product metal nameplate cannot leave the factory. 5.1.5
The metal nameplate shall at least indicate the following items: Generator name and model:
Manufacturer product number:
Rated evaporation capacity, t/h:
Rated working pressure, MPa;
Rated working temperature, "C
Overall dimensions:
Total weight:
Manufacturer name;
Manufacture year and month;
J. Inspection mark.
5.1.6 The welding of the pressure-bearing components of the generator shall adopt the welding process of argon arc welding with primer. .5.2 Installation
5.2.1 The installation unit of the generator shall be approved by the bureau-level safety department before it can be installed. Undertake the task of installing the generator. 5.2.2 Before and during the installation of the generator, the installation unit should conduct an inspection. If any quality problems that affect the safe use of the pressure-bearing components are found, the installation should be stopped and reported to the safety department. 5.2. The manufacture and installation of the generator must be carried out in accordance with the design drawings and the relevant requirements of SYJ4041 and this standard. If there are any changes during the manufacturing and installation process, the consent of the design unit must be obtained. 5.3 Repair
5.3.1 The repair unit of the generator's professional components should have certain technical strength, tooling equipment and testing methods, and can only undertake the repair task after approval by the bureau-level safety department. 2
SY5854--93|| tt||5.3.2 The repair of the pressure-bearing components of the generator shall have a construction technical plan, which shall be approved by the technical person in charge of the management unit and reported to the safety department for filing.
Before welding the transformer components of the generator, a welding process assessment must be carried out. 5.3.3
After inspection, if one of the following situations exists, repairs should be carried out and the generator cannot guarantee safe operation until the next inspection period: a.
The pressure-bearing component is cracked;
When the pressure-bearing component is bulged due to material reasons, it must be replaced: d.
When the height of the bulge on the upper part of the auxiliary radiation and convection pipe exceeds 3mm, the pipe should be switched: e.
The curvature of the straight pipe of the radiation and convection pipe bundle exceeds the pipe length 2% or more than 0% of the inner diameter of the pipe, it should be replaced. 5.4 Inspection
The manufacture, installation and repair of the generator must be inspected by a professional inspection unit approved by the competent department at the ministerial level. Only after passing the inspection can it be shipped, installed and used.
6 Main accessories and instruments
6.1 Safety valve
6.1.1 The generator should be equipped with safety valves at the following locations: a.
Steam outlet;
Steam outlet (install 2);
Atomizing separator;
Steam outlet atomizing pipeline.
The safety valve should be installed vertically, and no steam outlet pipe or valve for taking steam should be installed between the safety valve and the pipeline. 6.t.2 3
6.1.3 The total discharge of the safety valve shall be calculated in accordance with Article 182 of the "Safety Technical Inspection Regulations for Steam Boilers". 6.1.4 The steam outlet safety starting pressure shall be 1.08 times and 1.1 times the rated working pressure. 6.1.5 The differential pressure of the safety valve back to the seat should generally be 4% to 7% of the initial pressure. 6.1.6 The safety valve should generally be equipped with a steam exhaust pipe, which should be directly connected to a safe place and have a sufficient cross-sectional area to ensure smooth exhaust. A drain pipe connected to a safe place should be installed at the bottom of the safety exhaust pipe. Valves are not allowed to be installed on the exhaust pipe and the drain pipe. 6.1.7 When the generator is in operation, the safety valve should be regularly tested for discharge. When it is restarted after a shutdown, the safety valve should also be tested for discharge. 6.1.8 The safety valve of the generator should be adjusted and calibrated at least once a year. 6.1.9 Newly installed safety valves and safety valves after overhaul should be adjusted and calibrated. 6.110 After calibration, the safety valve should be locked or sealed. It is strictly forbidden to arbitrarily increase the initial pressure of the safety valve or render the safety valve ineffective by means of adding weights or jamming the valve core.
6.1.11 The calibration unit of the safety valve shall have certain calibration capabilities and be approved by the bureau-level safety department. After the safety valve is calibrated, the calibration results such as the starting pressure and the return seat force shall be recorded and filed. 6.2 Pressure gauge
6.2.1 The generator shall be equipped with pressure gauges at the following locations: a.
Water supply pump outlet to single flow port;
Heat exchanger inlet and outlet;
Convection section outlet:
Radiation section inlet and outlet;
Steam outlet;
Fuel inlet and burner inlet:
Soot blowing device;
Steam and air pipelines for fuel atomization;
Combustion chamber.
SY 5854—93
6.2.2 Pressure gauges at high temperature and high pressure locations must be resistant to high temperature and shockproof. 6.2.3 The selection of pressure gauges shall comply with the following provisions: a. The accuracy of the pressure gauge shall not be lower than Class 1.5. The pressure gauge shall be selected according to the working pressure. The limit value of the pressure gauge dial scale shall be 1.5 to 3.D times the working pressure. It is best to select b.
c. The size of the pressure gauge dial shall ensure that the operator can clearly see the pressure indication value. The dial diameter shall not be less than 100mm. 6.2.4 The installation, calibration and maintenance of the positive force gauge shall comply with the regulations of the national metrology department. The pressure gauge shall be calibrated before installation, and a red line shall be drawn on the dial to indicate the working pressure. The pressure gauge shall be sealed after calibration. 6.2.5 The pressure gauge shall be installed in a symbol box according to the following requirements a. It shall be installed in a position that is convenient for observation and flushing, and shall be protected from high temperature, freezing and vibration; b. There shall be a water trap. When the water trap is made of steel pipe, its inner diameter shall not be less than 10mm. A cock shall be installed between the pressure gauge and the water trap to facilitate flushing of the pipeline and unloading and replacement of the pressure gauge. 6.2.6 The pressure gauge should be stopped from use if any of the following conditions occur: a. The pressure gauge with a limit stop pin is powerless, and the pointer cannot return to the limit pin after rotation; the pressure gauge without a limit pin is at no pressure, and the value of the pointer from zero exceeds the allowable error specified in the pressure gauge: b. The surface slope is broken or the dial scale is unclear; the seal is damaged or the calibration validity period has expired; c. The pressure gauge leaks or the pointer jumps; e. Other defects that affect the accuracy of the pressure gauge. 6.3 Thermometer 6.3.1 The generator should be equipped with thermometers at the following locations: a. Heat exchanger inlet and outlet: b. Convection section outlet; radiant section outlet: fuel oil inlet and oil nozzle.
6.3.2 The selection of thermometers shall comply with the following provisions: pressure type or bimetallic type:
b, the range of the temperature measuring instrument with a dial shall be 1.5 to 2 times the normal humidity. 6.3.3 The thermometer shall be stopped from use when any of the following conditions occur: the calibration validity period has expired:
the thermometer is damaged, the scale is unclear:
other defects that affect the accurate indication of the thermometer. 6.4 Temperature indicator
The generator shall be equipped with a temperature indicator at the following locations: steam outlet of the generator;
heated pipe book:
smoke exhaust duct:
d, burner throat:
the location for measuring the fuel oil temperature.
6.4.1 The accuracy of the temperature indicator shall not be lower than Class 1, and shall be calibrated according to the attached, and shall be replaced if the deviation is exceeded. 6.5 Automatic control system
6.5.1 The control part of the generator shall have the following functions4
8, automatic ignition and automatic shutdown when alarm
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b, automatic monitoring and control of flow, pressure and fire volume, manual adjustment.
6.5,2 When starting, the auxiliary equipment (water supply pump, blower, air compressor) shall be started first to perform pre-sweep. 6.6 Protection device
The generator shall be equipped with at least the following protection devices: steam overpressure, overtemperature alarm and interlock protection device: a,
b, flame interruption interlock protection device;
low combustion interlock protection device:
water inlet low flow rate interlock protection device.
Generator operation room
The generator operation room shall meet the following requirements and shall comply with SYJ27. The equipment layout shall be convenient for operation, passage and maintenance. a.
There should be enough light and good ventilation, as well as necessary anti-freeze measures. c.
Water accumulation should be prevented.
The ground should be flat and without steps.
Load-bearing beams, columns and other components should be at a certain distance from the generator or other measures should be taken to prevent damage by high temperature. ,
7.2 Generator operation room.
.8 Use management
The generator operator must undergo professional training and examination and obtain the operator certificate issued by the bureau-level safety department before he can take up his post. 8.12
8.2 The operator of the generator should be familiar with the safety knowledge of the generator, regularly check the operating status of the generator, and ensure safe operation. No leader shall intentionally or force the operator to violate the rules. 8.3 Inspection before using the generator
The following inspections must be done before using the newly installed, relocated, or long-term deactivated generators, a. Are the valves on the process pipeline in the proper position? 6.
Is the safety alarm device set? Is the power supply voltage normal? Is the white control system normal? Is there any leakage in the fuel system? Is the calibration of the safety accessories within the validity period? Are the supporting equipment and water treatment equipment normal? -8.4 Startup
8.4.1 Start the auxiliary equipment according to the design procedure. 8.4.2 The lining of the newly installed or long-term unused generator should be dried before commissioning. 8.5 Operation
8.5.1 When starting operation, the fire volume should be adjusted step by step, and it is forbidden to make the pressure components heat up sharply. 8.5.2 Adjust the flame to the lowest state. 8.6 Stop operation
When the generator stops running from the normal working state, the fire volume should be reduced step by step, and it is forbidden to reduce sharply. -8.7 Emergency stop operation
When the generator is in operation, it should be stopped urgently if any of the following situations occur: 5
$Y 5854-93
All water supply pumps fail or the water supply system fails, and the generator cannot be supplied with water: b. Over temperature, over temperature, after treatment, there is still no drop; all safety valves fail:
The pressure-bearing components of the generator are damaged, endangering the operator to be safe e.
The generator frame is burned:
Other abnormal conditions affect the safe operation of the generator. f.
8.8 When the generator is stopped for a long time, the following measures should be taken. 8.8.1 Remove the water in the pipe and close the valve to isolate the air. 8.8.2 Drain and purge all systems that may contain moisture. 8.8.3 If the generator fuel is heavy oil, replace it with light oil in the fuel system. 8.8.4 Pneumatic and electric instruments should be windproof. 8.8.5 Remove the power fuse or circuit breaker and take measures to prevent illegal operation. 8.9 When maintenance personnel enter the generator to work, they should meet the following requirements. 8.9.1 Before entering the combustion chamber, the combustion chamber must be ventilated and the flue gate must be tightly closed to prevent poison, fire and explosion. At the same time, measure the oxygen content so that the volume ratio of oxygen content reaches 18% to 23%. 8,9,2 For combustion pools and gas generators, boards should be added to isolate the source of oil and gas, and obvious markings should be made. 8.9.3 When working in a humid combustion chamber and using electric lights for lighting, the lighting voltage shall not exceed 12V; in a relatively dry combustion chamber and when there are safety measures to be taken, an open electric voltage of no more than ? can be used. It is prohibited to use open flame lighting products. 8.10 The unit using the generator must do a good job in quality management and take effective water treatment measures to ensure that the water quality of the generator during operation meets the requirements of the instruction manual.
8.11 The unit using the generator shall go through registration procedures with the downstream safety department. 8.12 When registering the generator, the user unit shall fill in the "Registration Form for Wet Steam Generator Use" (see Appendix A (Supplement) and the equipment file, and submit the following information to the registration authority: a. Generator factory information:
b. Installation quality inspection report:
c.Various rules and regulations for generator safety management; d. Number of certified operators.
8.13 The registration department shall issue a "steam generator registration certificate" to the user unit after the submitted materials are checked and qualified: see Appendix B (Supplement)
8.14 It is strictly forbidden to put the generator into use without obtaining the "wet steam generator registration certificate". 8.15 After the imported generator arrives, the user unit shall conduct commodity inspection immediately. The safety performance inspection work shall be carried out by a professional inspection unit. It is strictly forbidden to install the generator without commodity inspection. 8.16 Foreign trade business units and receiving units shall be responsible for the advancement and reliability of the generator. When signing a contract, foreign trade units shall select professionals who are familiar with the safety performance of the generator to participate in the negotiation. The following items must be proved in the contract. 8.16.1 Specifications and standards for design, manufacture, installation and inspection. 8.16.2 Random documents of the product, including product quality certificate, product drawings, pressure element strength calculation, use and installation instructions, safety valve discharge calculation.
8, 16.3 Claim period, guarantee period.
8.17 After the contract is signed: it should be reported to the safety department of the bureau for filing in a timely manner. 9 Regular inspection
9.1 The unit using the generator must implement a regular inspection system for the running generator. Regular inspection work shall be carried out by professional inspection units recognized by the competent industry department.
SY5854--93
9.2 The inspectors engaged in the inspection of the generator shall be personnel who have obtained the saw furnace and press container inspection qualification certificate issued by the labor department.
9.3 The inspection unit shall ensure the quality of inspection (including inspection after defect treatment). During the inspection, the inspector shall keep detailed records. The inspection shop shall issue a "Periodic Inspection Report of Wet Steam Generator". The inspection report must be signed by a certified inspector and will be valid only after being reviewed and stamped with the official seal of the inspection unit.
9.4 The inspected unit must complete the following preparations before the inspection. 9.4.1 Reliable isolation measures must be taken for the pipes, flues, etc. connecting the inspected generator to the thermal system. 9.4.2 Remove the ash and dirt on the surface of the radiation bundle and convection bundle to expose the sub-metal surface. 9.4.3 The scaffolding, light ladder and other facilities set up for inspection must be safe and secure. 9.4.4 Before the inspection, the power supply related to the generator must be cut off, the fuse must be removed, and obvious safety signs must be set up. 9.4.5 Completely cut off the fuel supply system.
9.4.6 The power supply voltage of the inspection lamp and tools shall comply with the provisions of GB3805. 9.4.7 In order to expose the inspection part, the insulation layer and other accessories should be partially or completely removed if necessary. 9.4.8 During the internal inspection, there should be a dedicated person to supervise and reliable communication measures. 9.5 The equipment and instruments to be inspected should be used only after they are inspected and tested within the effective inspection period. 9.6 The generator regular inspection includes the following items. 9.6.1 External inspection refers to the regular online inspection by professionals during the operation of the generator, at least once a year. 9.6,2 Internal and external inspection: refers to the inspection by professional inspectors when the generator is shut down, at least once every 3 years. 9.6.3 Pressure test: refers to the water pressure test exceeding the maximum working pressure when the generator is shut down, and the cycle is at least every 6 years!
Regular internal and external inspections should focus on macroscopic inspection and wall thickness measurement. If necessary, the following inspection methods can be adopted: a. Nondestructive testing inspection:
Hardness test inspection;
Metallographic inspection;
Stress measurement:
Acoustic emission inspection:
Pressure test;
Others.
9.8The key parts of regular internal and external inspection are as follows. 9.8.1The parts with defects in the last inspection.
Whether the surface of the pressure-bearing components has cracks, cracks and corrosion. Whether the pressure-bearing components are worn, especially the pipe walls in the area with high flue gas flow rate and soot blower purge area. 9.8.3
Whether the pressure-bearing components are dented, bent, bulged and overheated. 9.8.5The wear of the convection tube bundle support plate, pipe clamps, pipe clamp bolts and the contact parts of the tube bundle and whether the connection parts are firm. 9.8.6Whether the safety accessories are flexible and reliable. 9.8.7Whether the automatic control, signal system and instrumentation are sensitive and reliable. 9.9 Before the pressure test of the generator, internal and external inspections shall be carried out, and strength calculations shall be made if necessary. However, the working pressure shall not be confirmed by the pressure test method.
9.10 The test pressure shall be 125 times the rated working pressure. During the pressure test, the stress shall not exceed 90% of the service limit of the material group at the test temperature.
9.11 The pressure test shall comply with Article 3.8.2 of SYJ4041. 9.12 The generator must be scrapped if one of the following conditions is found after inspection: a. When the pressure-bearing components are corroded and the wear wall thickness is less than the calculated wall thickness, and the pressure cannot be reduced for use: 7
SY5854—93
b. When the pressure-bearing components of the generator are seriously damaged due to an accident and have no repair value, or when the material of the pressure-bearing components has changed.
For all scrapped generators, the user unit shall organize relevant units to make a comprehensive technical appraisal, report to the competent department for approval, and file with the safety department. It is strictly forbidden to use scrapped generators. 9.13
The inspection unit of the generator shall be subject to the supervision and business leadership of the safety supervision department. Unit,
Installation location Station number Model
SY 5854--93
Appendix A
Registration form for wet steam generator
(Supplement)
One flower degree
Three body materials Manufacturing unit Manufacturing date Production date Continuous steam volume Dew volume
Water treatment method
Supervisor of user unit:
Person filling out the form:
Filling date:
User unit
Usage certificate number
Installation location| |tt||Certification period
Certification R period
Certification H period
Additional instructions:
$Y5854-93
Appendix B
Steam generator user certificate
(supplement)
Valid until
Valid until
Certification issuing unit
This standard is proposed by the Technical Supervision Bureau of China National Petroleum Corporation. This standard was issued by the Petroleum Industry Safety Professional Standardization Technical Committee. This standard was initiated by the Safety Supervision Department of Liaohe Petroleum Exploration Bureau. The main drafters of this standard are Ding Wenyang, Feng Yuan, Li Genglai, Zhang Run, and Li Lianren. 186 The power supply voltage of the inspection lamp and tools shall comply with the provisions of GB3805. 9.4.7 In order to expose the inspection site, the insulation layer and other accessories shall be partially or completely removed if necessary. 9.4.8 During the internal inspection, there shall be a dedicated person to supervise and reliable communication measures shall be available. 9.5 The equipment and instruments to be inspected shall be used only after they have passed the inspection and test within the effective inspection period. 9.6 The generator regular inspection includes the following items. 9.6.1 External inspection refers to the regular online inspection by professionals during the operation of the generator, at least once a year. 9.6,2 Internal and external inspection: refers to the inspection by professional inspectors when the generator is shut down, at least once every 3 years. 9.6.3 Pressure test: refers to the water pressure test exceeding the maximum working pressure when the generator is shut down, and the cycle is at least every 6 years!
Regular internal and external inspections should be mainly macroscopic inspections and wall thickness measurements. If necessary, the following inspection methods can be adopted: a. Nondestructive testing inspection:
Hardness test inspection;
Metallographic inspection;
Stress measurement:
Acoustic emission inspection:
Pressure test;
Others.
9.8The key parts of regular internal and external inspection are as follows. 9.8.1The parts with defects in the last inspection.
Whether the surface of the pressure-bearing components has cracks, cracks and corrosion. Whether the pressure-bearing components are worn, especially the pipe walls in the area with high flue gas flow rate and soot blower purge area. 9.8.3
Whether the pressure-bearing components are dented, bent, bulged and overheated. 9.8.5The wear of the convection tube bundle support plate, pipe clamps, pipe clamp bolts and the contact parts of the tube bundle and whether the connection parts are firm. 9.8.6Whether the safety accessories are flexible and reliable. 9.8.7Whether the automatic control, signal system and instrumentation are sensitive and reliable. 9.9 Before the pressure test of the generator, internal and external inspections shall be carried out, and strength calculations shall be made if necessary. However, the working pressure shall not be confirmed by the pressure test method.
9.10 The test pressure shall be 125 times the rated working pressure. During the pressure test, the stress shall not exceed 90% of the service limit of the material group at the test temperature.
9.11 The pressure test shall comply with Article 3.8.2 of SYJ4041. 9.12 The generator must be scrapped if one of the following conditions is found after inspection: a. When the pressure-bearing components are corroded and the wear wall thickness is less than the calculated wall thickness, and the pressure cannot be reduced for use: 7
SY5854—93Www.bzxZ.net
b. When the pressure-bearing components of the generator are seriously damaged due to an accident and have no repair value, or when the material of the pressure-bearing components has changed.
For all scrapped generators, the user unit shall organize relevant units to make a comprehensive technical appraisal, report to the competent department for approval, and file with the safety department. It is strictly forbidden to use scrapped generators. 9.13
The inspection unit of the generator shall be subject to the supervision and business leadership of the safety supervision department. Unit,
Installation location Station number Model
SY 5854--93
Appendix A
Registration form for wet steam generator
(Supplement)
One flower degree
Three body materials Manufacturing unit Manufacturing date Production date Continuous steam volume Dew volume
Water treatment method
Supervisor of user unit:
Person filling out the form:
Filling date:
User unit
Usage certificate number
Installation location| |tt||Certification period
Certification R period
Certification H period
Additional instructions:
$Y5854-93
Appendix B
Steam generator user certificate
(supplement)
Valid until
Valid until
Certification issuing unit
This standard is proposed by the Technical Supervision Bureau of China National Petroleum Corporation. This standard was issued by the Petroleum Industry Safety Professional Standardization Technical Committee. This standard was initiated by the Safety Supervision Department of Liaohe Petroleum Exploration Bureau. The main drafters of this standard are Ding Wenyang, Feng Yuan, Li Genglai, Zhang Run, and Li Lianren. 186 The power supply voltage of the inspection lamp and tools shall comply with the provisions of GB3805. 9.4.7 In order to expose the inspection site, the insulation layer and other accessories shall be partially or completely removed if necessary. 9.4.8 During the internal inspection, there shall be a dedicated person to supervise and reliable communication measures shall be available. 9.5 The equipment and instruments to be inspected shall be used only after they have passed the inspection and test within the effective inspection period. 9.6 The generator regular inspection includes the following items. 9.6.1 External inspection refers to the regular online inspection by professionals during the operation of the generator, at least once a year. 9.6,2 Internal and external inspection: refers to the inspection by professional inspectors when the generator is shut down, at least once every 3 years. 9.6.3 Pressure test: refers to the water pressure test exceeding the maximum working pressure when the generator is shut down, and the cycle is at least every 6 years!
Regular internal and external inspections should be mainly macroscopic inspections and wall thickness measurements. If necessary, the following inspection methods can be adopted: a. Nondestructive testing inspection:
Hardness test inspection;
Metallographic inspection;
Stress measurement:
Acoustic emission inspection:
Pressure test;
Others.
9.8The key parts of regular internal and external inspection are as follows. 9.8.1The parts with defects in the last inspection.
Whether the surface of the pressure-bearing components has cracks, cracks and corrosion. Whether the pressure-bearing components are worn, especially the pipe walls in the area with high flue gas flow rate and soot blower purge area. 9.8.3
Whether the pressure-bearing components are dented, bent, bulged and overheated. 9.8.5The wear of the convection tube bundle support plate, pipe clamps, pipe clamp bolts and the contact parts of the tube bundle and whether the connection parts are firm. 9.8.6Whether the safety accessories are flexible and reliable. 9.8.7Whether the automatic control, signal system and instrumentation are sensitive and reliable. 9.9 Before the pressure test of the generator, internal and external inspections shall be carried out, and strength calculations shall be made if necessary. However, the working pressure shall not be confirmed by the pressure test method.
9.10 The test pressure shall be 125 times the rated working pressure. During the pressure test, the stress shall not exceed 90% of the service limit of the material group at the test temperature.
9.11 The pressure test shall comply with Article 3.8.2 of SYJ4041. 9.12 The generator must be scrapped if one of the following conditions is found after inspection: a. When the pressure-bearing components are corroded and the wear wall thickness is less than the calculated wall thickness, and the pressure cannot be reduced for use: 7
SY5854—93
b. When the pressure-bearing components of the generator are seriously damaged due to an accident and have no repair value, or when the material of the pressure-bearing components has changed.
For all scrapped generators, the user unit shall organize relevant units to make a comprehensive technical appraisal, report to the competent department for approval, and file with the safety department. It is strictly forbidden to use scrapped generators. 9.13
The inspection unit of the generator shall be subject to the supervision and business leadership of the safety supervision department. Unit,
Installation location Station number Model
SY 5854--93
Appendix A
Registration form for wet steam generator
(Supplement)
One flower degree
Three body materials Manufacturing unit Manufacturing date Production date Continuous steam volume Dew volume
Water treatment method
Supervisor of user unit:
Person filling out the form:
Filling date:
User unit
Usage certificate number
Installation location| |tt||Certification period
Certification R period
Certification H period
Additional instructions:
$Y5854-93
Appendix B
Steam generator user certificate
(supplement)
Valid until
Valid until
Certification issuing unit
This standard is proposed by the Technical Supervision Bureau of China National Petroleum Corporation. This standard was issued by the Petroleum Industry Safety Professional Standardization Technical Committee. This standard was initiated by the Safety Supervision Department of Liaohe Petroleum Exploration Bureau. The main drafters of this standard are Ding Wenyang, Feng Yuan, Li Genglai, Zhang Run, and Li Lianren. 18
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