SY/T 5536-2002 Specification for commissioning of crude oil pipelines
Some standard content:
ICS 75.010
Registration No.: 10438-2002
Petroleum and Natural Gas Industry Standard of the People's Republic of ChinaSY/T 55362002
Replaces SY/T 5536-92
Conmmissioning and start-up code for oil transmission pipeline2002-05-28 IssuedbzxZ.net
National Economic and Trade Commission
2002～08-01Implementation
SY/T 5536-2002
This standard is based on the development of crude oil pipeline operation technology and refers to the commissioning experience of some newly built pipelines. It is a revision of SY/I5536-92 "Conmmissioning and start-up code for crude oil heating transmission pipelines". This standard adds the technical requirements for commissioning pipelines using pour point depressants.
Appendix A of this standard is a normative appendix. From the date of entry into force, this standard will replace SY/T5536--92. This standard is proposed by the Oil and Gas Storage and Transportation Professional Standardization Technical Committee and the unit that initiated this standard is China Petroleum and Natural Gas Co., Ltd. Pipeline Branch. The main drafters of this standard are Zhang Cheng, Li Guoxing, Cao Jinshui, Qian Yaping, Zhang Zengqiang, Yan Qizhu: This standard is entrusted to China Petroleum and Natural Gas Co., Ltd. Pipeline Branch for interpretation. 1 Scope
Crude Oil Pipeline Commissioning Specification
This standard specifies the technical requirements for the commissioning of crude oil pipelines. This standard is applicable to the commissioning of newly built or reactivated crude oil pipelines. 2 Normative Reference Documents
SY/T 5536--2002
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version is applicable to this standard. (GB8978-1996 Integrated sewage discharge standard SY0401-98 Oil and gas pipeline line_I engineering implementation and acceptance specification SY/T5767-2002 Pipeline crude oil depressant SY/T5920-94 Crude oil depot operation management specification SY/T6148-1995 Oil arm line cleaning operation procedure 3 Preparation for production
3.1 Establish a production command organization to lead and coordinate the trial operation and production of the entire line. 3.2 The production management organization is sound and each The post personnel are fully equipped and the post holding rate reaches 100%; special type operators should obtain the operation certificate issued by the relevant departments.
3.3 The production command organization shall organize the pre-inspection and modification of all construction projects according to the design drawings and relevant construction and acceptance ship standards. 3.4 Make corrections to the problems found in the pre-acceptance inspection. 3.5 Formulate physiological systems, operating procedures, and production tables for each post: 3. Formulate a production plan according to the requirements of Appendix A, submit it to the relevant superior departments for approval, and follow the requirements of the plan. Make good preparations in advance. 3.7 Sign a power supply agreement with the power supply department.
3.8 Sign the handover and transportation agreement for crude oil collection and delivery. 3.9 The crude oil pipeline that has been reactivated should be subjected to pipeline corrosion condition adjustment and residual strength evaluation. 4 Acceptance and trial operation
4.1 Trial operation of each unit
4.1.1 Before pre-acceptance, conduct trial operation of each unit in accordance with the provisions of SY0401-98. 4.1,2 During pre-acceptance, the results of the trial operation of each unit shall be reviewed and accepted. 4.2 Station field preparation 4.2.1 The system test run shall be carried out in accordance with the provisions of SY/T5920-94. 4.2.2 The acceptance and test run of the fire protection system shall be carried out in conjunction with the local fire protection management department in accordance with the national fire protection management regulations and relevant standards. 4.2.3 Debugging and commissioning of the automatic control system +.2.4: Testing of safety protection facilities (including debugging of combustible alarms): 4.2.5 The overall test run of the station should be carried out with water (or combined with hot water preheating): SY/T 55362002
4.2.6 During the whole test run, the operation status of the process pipelines, valves, equipment, instruments and automation systems in the station shall be checked by starting and stopping equipment and switching processes:
4.2.7 Debugging and commissioning of the compensation system.
5 Pipe cleaning and pressure testing
5.1 Conduct a line inspection of the entire line, check the markers, test poles and accompanying roads along the pipeline: 5.2 Pipe cleaning and overall pressure testing of the entire line shall be carried out before the oil is put into operation. 5.3 When cleaning the entire line, a mechanical pipe cleaner shall be used. 5.4 Trunk line pipe cleaning shall be carried out in accordance with SY/T6148- 1995 regulations. 5.5 The overall pressure test of the whole line shall be carried out in accordance with the provisions of SY0401--98. 6 Commissioning methods
6.1 The crude oil pipeline can be put into operation in two commissioning methods: non-heating and heating. 6.1.1 Heating transportation can be carried out by adding depressant to oil, hot water preheating to oil and adding depressant and hot water preheating to oil. (1.2 Hot water preheating oil can be carried out by positive transmission (continuous transmission from the starting point to the end point) and positive and negative alternating hot water transmission. 6.2 During commissioning, if the freezing point of the crude oil is lower than the lowest ground temperature along the pipeline during the commissioning period, it can be directly oiled. 6.3 When put into production, if the freezing point of the transported crude oil is higher than the ground temperature along the pipeline, different oil injection methods can be adopted according to the pipeline conditions and oil properties: (.3, 1 For the pipeline with obvious effect of adding depressant to the transported crude oil and low initial output, the oil injection method of adding depressant can be adopted. 6.3.2 For the transported crude oil modified by adding depressant, if the freezing point is still higher than the ground temperature along the pipeline, the oil injection method combining depressant and hot water preheating or hot water preheating can be adopted: 6.3.3 Which hot water preheating method to use should be determined after comprehensive calculation based on the process flow of the pipeline, the rheological properties of the crude oil and the conditions at the time of production.
6.4 When adding depressant to the oil injection method, the effect of adding depressant to the crude oil should be evaluated by indoor test. And do a bad channel test. The evaluation items and evaluation methods shall comply with the provisions of SY/I5767-2002. 6.5 When the forward preheating method is put into operation, the water shall be transported at the maximum water delivery rate. The hot water delivery rate shall not be less than the maximum pipe capacity between heating stations. 6.6 Before using the forward and reverse alternating water delivery preheating method to start oil, the heating capacity of the pipeline terminal shall be calculated. 6.6, 1 Before preheating, in addition to filling the pipeline with water, the first station of the pipeline shall reserve a water volume equivalent to 1.5 to 2 times the total volume of the pipeline between the largest heating stations. The storage tank at the end of the pipeline shall be able to meet the reverse water delivery requirements: 6.6.2 The total delivery volume of each single trip shall be 1.2 to 1.5 times the total volume of the pipeline between the largest heating stations. 6.6.3 Hot water preheating Each operating parameter should be within the allowable range specified in the oil transportation regulations. 6.7 The temperature drop of special pipeline sections (large-scale crossings, sections laid under paddy fields, sections laid in rocks and relatively long overhead sections) should be considered. 7 Oiling and operation
7.1 Conditions to be met before oiling
7.1.1 Problems found during system trial operation and overall pressure test should be dealt with. 7.1.2 All equipment and instruments on the entire line operate normally, and there is no obvious deformation and displacement of pipelines and fixed piers after preheating. 7.1.3 The crude oil handover equipment and facilities have been calibrated. 7.1.4 The first station should ensure that there is sufficient oil source to meet the needs of production. 7.1.5 The next station should have a harmonic tank for oil-water mixture to be tested with qualified original materials, and sewage treatment and drainage 7.1.6 Before putting oil into operation by hot water preheating, the preheating conditions of the pipeline shall be calculated according to the preheating conditions approved by the production plan. The temperature of the crude oil at the next station should be higher than the freezing point of the crude oil measured along the line, and the pipeline pressure should be lower than the allowable working pressure during the oil injection process. 7.1.7 When the water temperature at the next station reaches the preheating conditions determined by the trial operation and production plan, start to inject oil: 2
7.2 Oil injection operation
7.2.1 When the pour point depressant is added for production, the pour point and viscosity of the crude oil shall be tested at each station on time: 7.2.2 When the oil is injected by hot water preheating, the hourly oil output should not be lower than the designed output. 7.2.3 After the injection, each station shall conduct remote inspection according to regulations, measure various parameters and fill in reports. SY/r 5536—2002
7.2.4 According to the time calculated in the commissioning plan for the oil head to arrive at each station, make advance preparations for each station: timely adjust the operating parameters
7.3 Mixed oil operation
7.3.1 2 hours before the calculated oil head arrives at the station, start continuous testing, and immediately switch to the oil tank when oil is seen: when the water content of crude oil is lower than 1%, improve the crude oil tank:
7.3.2 For the oil-water mixture, measures such as heating sedimentation and emulsification should be taken to separate oil and water: the separated sewage should be treated and can only be discharged when it reaches the emission standards specified in GB8978. 7.4 Accident anticipation and measures
7.4.1 Plans and emergency repair measures for major accidents such as initial coagulation, burst, deformation and displacement of pipelines should be formulated. 7.4.2. Plans and emergency repair measures should be formulated for major accidents such as damage to the main facilities of the oil station, oil leakage, and fire. 7.4.3 Emergency repair teams should be stationed at designated locations along the oil station and pipeline. 8. Basic work
8.1 Basic data for commissioning
.1,1 The operating data during the commissioning process should be mainly collected and recorded automatically. 8.1.2 When using manual recording, the accuracy level of the primary instrument should not be lower than 0.5 level. 8.1.3 Record the operating status of the equipment on time. 8.1.4 During the commissioning process, relevant meteorological data and oil head arrival time, oil-water content changes, and total oil-water mixing data should be measured on time
8.1.5 Important events in the entire commissioning process should be recorded. 8.1.6 The operation record should start from the overall trial operation within the station: 8.1.7 After the commissioning is completed, a summary of the technical and management work of the commissioning process is completed. 8.2 Data Management
8.2.1 The following data shall be collected and preserved during the commissioning processa) Commissioning plan;
b) Summary of commissioning technology and management work:
Data and records of commissioning, cleaning and pressure testing of each station;d) Summary of process operation parameters and parameter change curve during commissioning; Analysis of equipment operation technical status during commissioning. e)
Major events and other relevant data and materials. t
8.2.2 All data shall be archived within 3 months after commissioning3
SY/I 55362002
A.1 Basis for formulating the plan
The basis for formulating the commissioning plan is:
a) Relevant national laws and regulations
b) Relevant documents and design data from superiors, e) Natural conditions such as crude oil properties and ground temperature. Crude oil handover and power supply and water supply agreement.
e) Other information related to trial operation. Production organization and preparation
A.2.1 Production organization and responsibilities:
A,2.2 Production command and operation process,
Appendix A
[Normative Appendix]
Contents and requirements of the production plan
A.2.3 Establish rules and regulations and formulate operating procedures. A, 2.4 Production guarantee: Arrangement of emergency repair team and equipment for emergency repair. A.3 Technical content
A.3.1 Determination of production mode,
A.3.2 Pour point depressant evaluation results.
A.3.3 Calculation of main operating parameters.
A.3.3.1 Output, temperature, pressure and change trend during production. A.3.3.2 Time from the start of production to each station and pipe section. A.3.3.3 Preheating time, preheating water consumption, and total oil-water mixture volume for preheating. A.4 Trial operation and production preparation section operation process, steps, and responsible persons A.4.1 Equipment commissioning.
A.4.2 In-station trial operation,
A.4.3 Clearing and pressure testing.
A.4.4 Preheating method,
A.4.5 Oiling operation:
Handling of oil-water mixture:
A.5 Safety requirements and accident handling
A.5.1 Safety requirements for operators and repair personnel
A.5.2 Safety management during commissioning
A, 5.3 Accident prediction and handling measures,
A.6 Annex
A(.1 Technical flow chart and plan layout of the oil pipeline
Longitudinal section diagram and horizontal running diagram of the oil pipeline
A.6.2
A.6.3 Calculation results of relevant parameters for commissioning and operation. SY/T 5536—2002
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