Some standard content:
ICS 13.2H
Registration No.: 8122--2001wwW.bzxz.Net
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY 6500—2000
The survey provisions on petroleumfacilities in shallow water
2000-12-12 Issued
State Administration of Petroleum and Chemical Industry
2001—(06 01 Implementation
SY 6500—2000
Scope"
Referenced standards
General layout and structure
General mechanical equipment·
Electrical equipment
Instrumentation and automation system
Drilling equipment·
Well repair equipment:
Oil production process system
Measurement and perforation facilities
Crane
Anti-pollution equipment
Communication equipment
Aids to navigation and signals
Helicopter deck
Fire, toxic and flammable gas detection and reporting system Fire protection
Escape and rescue,
5y 650---2000
All technical contents of this standard are mandatory. Foreword
This standard is formulated to ensure the implementation of the certification inspection system for shallow-water petroleum facilities, to ensure the technical conditions of shallow-water petroleum facility operations and the safety of life and property of personnel, and to prevent environmental pollution in shallow-water operating areas. The contents of this standard mainly include the certification inspection procedures and inspection items in the design, construction, and production operations of shallow-water petroleum facilities and mobile drilling and platform petroleum special equipment, as well as the provisions for the supervision and management of certification inspection: The technical basis for certification inspection meets the technical requirements of national laws and regulations and inspection agreements. Specification standard: The inspection of mobile oil production platforms and upper facilities of working platforms shall be carried out in accordance with this standard: This standard does not include the inspection of geophysical exploration equipment. This standard is proposed by China Petroleum and Natural Gas Group Corporation. This standard belongs to the China Petroleum and Natural Gas Industry Safety Professional Standardization Technical Committee. The drafting unit of this standard: Shengli Petroleum Administration Bureau Technical Supervision Department, Shengli Petroleum Administration Bureau Shallow Sea Petroleum Engineering Technology Inspection Station. The main drafters of this standard are Lu Shihong, Ren Qiang, Li Binhong, Zhang Lemin, Xie Zhenping, Cao Zhixin. 1 Scope
Petroleum and Natural Gas Industry Standards of the People's Republic of China Shallow Sea Petroleum Facilities Inspection Regulations
The Survey provisions nn petraleumfacilities in shallow water
SY 6500--2100
This standard specifies the design, construction, production and inspection procedures and inspection items, and the requirements for the supervision and management of the inspection and certification of shallow-water petroleum facilities and special oil-producing equipment on mobile drilling platforms: This standard is applicable to the operators (contractors), designers, builders, operators and inspection and certification agencies of petroleum facilities and facilities in shallow waters of the People's Republic of China. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. This standard is valid for the version before: All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards: (G4914-1985 Marine Oil and Gas Industry Oily Wastewater Discharge Standard SY/I4089-95 Tanhaishan Engineering Electrical Technology Ship Specification SY/T4093-95 Tanhai Oil Facilities Crane Selection and Installation Technical Specification SY5747-1995 Tanhai Oil Construction Project Safety Rules SY6430-1999 Shallow Sea Right Fire Boat Hoisting Operation Safety Regulations SY 6431--1999 Basic Safety Requirements for Shallow Offshore Oil Operation Vessels Regulations of the People's Republic of China on Environmental Protection and Management of Offshore Oil Exploration and Development Issued by the State Council on December 29, 1983 Regulations on Inspection of Offshore Oil and Natural Gas Production Facilities Issued by the Ministry of Energy of the People's Republic of China on October 5, 1990 Regulations on Operation of Offshore Oil and Gas Platforms Issued by the Ministry of Energy of the People's Republic of China on October 1, 1997 3 General Provisions
3.1 General Provisions
All petroleum facilities in shallow offshore waters of the People's Republic of China shall be inspected and certified by a certification inspection agency recognized by the national offshore oil operation safety department and the national marine environmental protection department, and shall obtain a valid certificate as specified in 3.4.34. 3.2 Inspection Categories
3.2.1 Certification inspection of offshore petroleum facilities by certification inspection agencies Inspection is divided into construction inspection and in-operation inspection. Construction inspection is divided into design inspection and construction inspection. In-operation inspection is divided into annual inspection, special periodic inspection and temporary inspection. 3.2.2 Construction inspection refers to the inspection of shallow-water petroleum facilities during the construction, reconstruction and expansion, onshore prefabrication, offshore construction, trial operation and commissioning, which is conducted by the operator (contractor) and authorized by the national offshore oil operation safety management department and the national marine environmental protection department. 3.2.3 In-operation inspection refers to the inspection of shallow-water petroleum facilities during the period from commissioning to decommissioning, which is conducted by the operator (contractor) and authorized by the national offshore oil operation safety management department and the national marine environmental protection department to ensure the validity of its certificate:
Approved by the State Administration of Petroleum and Chemical Industry on December 12, 2000 2(0)1 ～ (6 - 01 Implementation
3.3 Inspection period
SY 6500—2000
3.3.1 The period of construction inspection shall be the whole process from the signing of the inspection agreement between the operator (contractor) and the issuing inspection agency for a certain offshore petroleum facility construction project to the issuance of the shallow water petroleum facility inspection qualification certificate by the issuing inspection agency: 3.32 The construction inspection of offshore petroleum facilities shall be carried out within three months before and after the issuance of the last inspection qualification certificate (inspection report) or the latest inspection certificate (inspection report); special periodic inspection shall replace annual inspection. 3.3.3 The time interval for special periodic inspection of shallow water petroleum facilities is one year, and special periodic inspection shall be carried out within three months before the expiration of the existing certificate. With the consent of the issuing inspection agency, the validity period of the certificate shall not be extended for more than one year. 3.3.4 Shallow sea petroleum facilities shall be subject to temporary inspection in the following circumstances: a) Replacement or repair of major electrical equipment in the danger zone; b) Replacement of major equipment or major repairs; c) When an accident or natural disaster occurs and the original technical conditions of shallow sea petroleum facilities are damaged and safety is affected, and restoration and repair are required; d) When the original technical conditions are modified to improve; e) When the operator (contractor) deems it necessary to inspect during the annual inspection or special periodic inspection interval. 3.4 Inspection certificate and inspection report 3.4.1. For shallow sea petroleum facilities and the equipment, cables, electrical instruments, control systems, etc. installed thereon that have been inspected by the issuing inspection agency, the issuing inspection agency shall sign the inspection report and the valid certificate of conformity in accordance with national regulations. 3.42 When completing the design of new, constructed or expanded shallow-water oil and gas facilities, the certification and inspection agency shall issue the corresponding inspection introduction; if there are any changes to the design drawings and materials, the corresponding design inspection conclusions shall also be issued: 3.4.3 In the construction of shallow-water petroleum facilities, at the end of the engineering stage required by the inspection agreement, the certification and inspection agency shall issue its stage inspection report; the equipment, cables, electrical instruments, control systems, etc. installed in the facility shall have a "product approval certificate"; when the facility is completed, the certification and inspection agency shall issue: a) a final inspection report with production conditions; b) a shallow-water oil and gas facility qualification certificate; c) a shallow-water oil and gas facility safety certificate; d) a shallow-water oil and gas facility lifting equipment qualification certificate; e) a special oil and gas equipment qualification certificate; a shallow-water oil and gas facility oil pollution prevention certificate; and a shallow-water oil and gas facility domestic sewage pollution prevention certificate. 3.4.4 After the annual inspection of the facility is completed after it is put into operation, the certification inspection agency shall issue the annual inspection report of the facility. 3.4.5 After the special periodic inspection of the facility is completed after it is put into operation, the certification inspection agency shall issue the special periodic inspection report of the facility and reissue the certificate of the new facility:
3.4.6 After the facility is temporarily inspected, the certification inspection agency shall issue the temporary inspection report of the facility and reissue the corresponding relevant certificates. 34.7 The operator (contractor) shall reasonably solve the problems raised in the inspection report and then obtain the approval of the certification inspection agency:
3.5 Inspection handling
35.1 Before the certification inspection business begins, the operator (underwriter).A "Testing Agreement (or Testing Contract)" should be signed with the certification inspection agency, which shall include at least but not limited to the following contents: a) Name of certification inspection items; h) Content, method and requirements of certification inspection; i) Working conditions and cooperation matters of certification inspection; d) Performance period, running points and method; c) Acceptance standards and methods; d) Remuneration and payment method; e) Liability for breach of contract and solution of disputes, etc. 6504—2000
3.5.2 During the whole inspection process, the operator (contractor) and the certification inspection agency shall submit the relevant information required by the "Regulations on the Inspection of Natural Production Facilities of the Ministry of Energy of the People's Republic of China" to the national offshore oil industry safety department, and accept the supervision of the national offshore oil operation safety department. 3.6 Design inspection
3.6.1 The operator (contractor) shall submit the design drawings and materials to the certification inspection agency for review and approval: The number of drawings and materials submitted shall be determined by the operator (contractor) and at least meet the needs of archiving and production. 3.6.2 The certification inspection agency shall check whether the design drawings and materials meet the selected According to the technical specifications and national laws and regulations, the safety, rationality and feasibility of the equipment shall be evaluated and the review opinions shall be given: 3.6.3 The operator (contractor) shall require the designer to modify the drawings and materials in a timely manner according to the opinions of the certification inspection agency and submit them for review and approval again.
3.6.4 After the certification inspection agency approves the design, the approved design drawings shall be stamped with the certification approval stamp: In addition to the retained drawings and materials, the review opinions and stamped drawings shall be returned to the operator (contractor) in a timely manner: 3.7 Construction Facility Inspection
3.7.1 Before the construction of shallow-water oil and gas facilities begins, they shall be approved by the certification inspection agency before construction can begin. 3.7.2 Certification Inspection The inspection agency shall inspect according to the approved drawings and materials, and confirm the implementation of the approved conditions and restrictions: 3.7.3 When the materials, technologies, equipment and devices used in the construction do not meet the selected technical specifications and approved drawings, the issuing inspection agency shall immediately issue an inspection memorandum, and the builder shall make rectifications according to it and obtain approval from the inspection agency. 3.8 Inspection during operation
3.8.1 When the issuing inspection agency conducts operational inspections on petroleum facilities, the operator (contractor) shall provide the issuing inspection agency with the drawings, materials and management documents that the issuing inspection agency needs to read: 3.8.2 The issuing inspection agency shall conduct annual inspections and special periodic inspections in accordance with the provisions of this standard. Inspection to confirm that its technical conditions are suitable for continued operation
3.83 The issuing inspection agency shall record the unacceptable defects of the facility in the inspection report, and the operator (contractor) shall make corrections according to the opinions of the inspection agency until the issuing inspection agency approves it: 3.9 Product Approval
3.9.1 The materials, equipment, cables, electrical instruments, control systems, and petroleum-specific equipment used in the facility shall be approved by the issuing inspection agency
3.9.2 The special equipment used in the facility shall be inspected by the issuing inspection agency for product approval: 3.10 Qualifications
3.10.1 The operator (contractor) shall review the qualifications of the designer and manufacturer. 3.10.2 The issuing inspection agency shall review the qualifications of the welders and non-destructive testing personnel for construction work. 3.10.3 The issuing inspection agency shall check the valid certificates of the equipment and machinery used in the construction and the maintenance and testing instruments and equipment used in the operation to confirm that they are in a valid state.
4 Overall layout and structure
4.1 General provisions
4.1.1 Overall layout
The overall layout of the facilities shall comply with the relevant provisions of Chapter 4 of SY5747-1995. 4.1.2 Structure
The network of facilities shall comply with the relevant provisions of Chapter 4 of SY5747-1995. 4.2 Design inspection
4.2.1 Overall layout design
SY 6500-2000
4.2.1.1 The operator (contractor) shall submit the following information to the certification inspection agency: a) Design commission; h) Overall layout plan of (gas) field development project facilities; d) Safety analysis report on oil (gas) field production facilities and environmental impact report approved by the competent government department; d) Marine environmental information in accordance with the provisions of 4.1.1 of SY5747-1995. 4.2.1.2 The designer shall submit the following drawings and information of the overall design of the platform through the operator (contractor) for review and approval by the certification inspection agency: a) General layout of the platform (including the general layout of the structure, machinery, electrical and equipment and indicating the purpose of all spaces); b) Horizontal layout of each deck of the platform; d) Layout of the platform cabins; e) Danger zone division diagram; 4.2.1.3 The designer shall submit the following drawings and information of the overall design of the submarine pipeline through the operator (contractor) for review and approval by the certification inspection agency: a) General horizontal layout of the submarine pipeline (the relative positions of the connected and adjacent offshore facilities, residential areas, waterways and ports shall be indicated; b) Layout of the submarine pipeline risers and the layout of the pipeline landing section; c) Coordinate description of the starting and ending points and route control points of the submarine pipeline. 4.2.1.4 The designer shall submit the following drawings and information of the overall design of the gas terminal through the operator (contractor) for review and approval by the certification inspection agency: a) General layout drawing of single point mooring device; b) Mooring arrangement drawing of single point mooring device; c) Subdivision drawing of single point mooring device; d) General layout drawing of onshore oil () terminal; d) Overall technical description of Shantou gas terminal. 4.2.2 Structural design 4.2.2.1 The designer shall submit the following drawings and information of the platform structure design through the (contractor). The departure certificate inspection machine shall review and approve: a) the evaluation book of the reduced structure specification; b) the upper structure diagram and the middle plate structure diagram of the platform; d) the overall analysis and calculation book of the platform structure shall include the calculation structure model and its boundary conditions of the static analysis and dynamic analysis, the summary table of the analyzed structural parameters and characteristics (input data), the load details and the interception method, the summary table of the calculation results and the corresponding explanation; c) the analysis and calculation book of the cylindrical foundation structure of the simple foundation platform; f) the calculation book of the strength, stability and stiffness verification of the components; d) the overall analysis and calculation book of the platform structure shall include the calculation model of the static analysis and dynamic analysis and its boundary conditions, the summary table of the analyzed structural parameters and characteristics (input data), the load details and the interception method, the summary table of the calculation results and the corresponding explanation; c) the analysis and calculation book of the cylindrical foundation structure of the simple foundation platform; f) the calculation book of the strength, stability and stiffness verification of the components; d) the overall analysis and calculation book of the platform structure shall include the calculation model of the platform structure; Plan view, surface view;
h) Jacket width structure drawing;
i) Jacket spot welding details;
) Steel pile structure drawing, pile connection drawing and cylindrical foundation structure drawing: k) Combustion torch structure drawing;
[) Lifting ear structure drawing and lifting strength verification;
m) Arm node strength analysis:
n) Pile foundation analysis (including axial bearing capacity and lateral bearing capacity verification of piles): 4
o) Berthing row structure drawing:
P) Anti-ice watertight pipe structure drawing:
SY 6500—2000
q) grouting pipeline guide and grouting process description (other requirements for the characteristics of cement slurry and grouting construction process requirements); r) Stairway structure drawing;
s) Trestle structure drawing and structural calculation -
t) Main machinery base drawing and strength calculation sheet (including crane base, boiler base); u) Pressure and sealing test outline;
) Material list;
w) Design change order:
Note: Design change order refers to a contact form for modifying the drawings and materials of a certain project item that has been approved by the design review, usually including design change notification form and implementation 1. Contact form. Design change link sheet, etc.
4.2,2.2 The designer shall submit the following submarine pipeline structural design drawings and materials through the operator (contractor) for review and approval by the certification inspection agency:
a) Riser and riser support structure drawings:
) Special-shaped pipeline structure drawings, including expansion bends, cross pipes and branch pipes, etc.;c) Structural drawings of the shoots, pipeline accessories and support components;d) Weighting layer design instructions;
) Structural calculation sheet (including structural strength analysis, buckling analysis, fatigue analysis, structural dynamic analysis, in-situ stability analysis, construction stress analysis);
f) If there are pipeline intersections, intersection and branch plane drawings and cross-section drawingsg) Submarine pipeline burial depth design and special pipe section protection design drawings;h) Pressure and sealing test outline;
i) Material list;
i) Design change sheet.
4.2.2.3 The designer shall submit the following drawings and materials of oil (gas) terminal structure design through the operator (contractor) for approval by the certification inspection agency:
a) Single point mooring device anchoring details:
b) Single point mooring device swivel joint, piping and hose system diagram: c) Single point mooring device structure specification calculation; d) Single point mooring device structure diagram;
) Single point mooring device strength, stability, deformation verification calculation; f) Single point mooring device mooring and anchoring calculation; g) Pressure test outline;
h) Material list;
i) Design change order.
4.2.2.4 For the certification inspection of special structures, the certification inspection agency shall determine the list of drawings and materials to be submitted after consultation with the operator (contractor) and the designer.
4.2.3 Anti-brain corrosion design
The design shall be submitted by the operator (contractor) and the following drawings and materials shall be reviewed and approved by the certification inspection agency: a) Coating design description, including coating treatment requirements, coating matching requirements, color design, etc.; L) Plating design description, including component use description and plating requirements, etc.; c) Exposed plate protection system, i.e. sacrificial electrode and (or) impressed current calculation book and construction instructions; d) Layout diagram of the terminal protection system;
c) Technical description of internal anti-corrosion of submarine pipelines;
|) Design change order.
4.3 Construction and construction inspection
4.3.1 Construction preparation
SY 6500-2000
4.3.1.! Before constructing the facilities, the builder should prepare the following documents for reference: a) Qualification certificate for construction of the facilities; h) Qualification certificates of welders, non-destructive testing personnel and other special workers; 3) Certificates of conformity and calibration of construction equipment and testing equipment; 4) Certificates of construction vessels and equipment or certification documents issued by the issuing inspection agency; 5) Quality certificates and re-inspection reports of materials (including raw materials, welding materials, coatings, etc.): 4.3.1.2 The builder should submit the following documents. The certification inspection agency shall check and approve: a) welding process design report; b) coal welding process and coal repair process regulations: (1) construction organization design, including but not limited to the following: 1) steel structure construction procedure; 2) coating and cathodic protection system construction procedure; 3) pipeline force test procedure; 4) loading, fixing and lashing construction organization design (which should include the general skeleton diagram of various types of operating ships, various construction machinery and tools, equipment performance brief description, other devices and equipment instructions for coordinated operations, control and description of the working characteristics of various types of work boats, etc.); 5) transportation plan and stability calculation book specified in SY6431; 6) book binding plan in accordance with SY6430; 7) jacket launching and positioning plan: 8) piling plan; 9) grouting plan: 10) upper structure installation plan: 11) submarine section laying plan.
d) Inspection schedule.
4.3.2 Land bank prefabrication
4.3.2.1 Land bank prefabrication shall be inspected according to the following items: a) Component prefabrication and assembly (including geometric dimensions, groove angle, joint gap, misalignment, first line, ovality, surface treatment and welding quality);
b) Coating application. Before coating, the surface treatment of the coating base material, meteorological conditions (i.e. wind, temperature, humidity), coating process and coating shall be checked to confirm that they meet the specified requirements. During coating construction, the surface treatment of the coating material, the thickness of the coating layer and the adhesion of the coating base material shall be checked;
) Installation of sacrificial anodes (including location, number, installation and fixation); d) Construction of submarine pipeline foam insulation layer:
\) Construction of submarine pipeline weighting layer 1 (including raw material ratio, density, water absorption rate, maintenance measures); f) Submarine pipeline section pressure test (including test medium, test pressure, and pressure stabilization time) 43.2.2 The builder shall record the work in accordance with 5 records and it shall be approved by the issuing inspection agency a) Construction records, including:
1) Coating construction records;
2) Vehicle anode installation records:
SY 6500—2000
3) Records of foam layer or weighting layer application on submarine pipelines. b) Quality inspection report, including:
1) Material appearance inspection record;
2) Material geometry inspection record;
3) Welding nondestructive testing record;
4) Coating quality inspection record.
c) Pressure and sealing test report,
433: Platform offshore application
4.3. 3.1 The platform offshore construction shall be inspected monthly according to the following items: a) loading, fixing, transportation construction (including weather conditions, ship performance, loading process, fixing and lashing, ship floating state); b) product installation construction (including weather conditions, lifting equipment, lifting process); c) installation and fixing of the jacket (including coordinates, orientation, elevation, leveling); d) piling construction (including pile hanging, lifting lug cutting, driving machine, pile welding quality, straightness, depth of soil); e) grouting construction (including cement grade, grouting equipment); Prepared and returned cement slurry density); 1) Platform upper structure installation (including inspection of middle plate height, positioning, welding); g) Platform integrity;
h) Pressure and sealing test:
) Open and closed position confirmation test;
) For special structural inspection, relevant tests and special items of inspection: 4.3.3.2 The builder shall make the following records and have them approved by the certification inspection agency: a) Construction records, including:
1) Hoisting Records:
2) Launching record;
3) Installation record;
4) Fence record:
5) Grouting record;
6) Platform upper installation record;
7) Pressure and sealing test report:
b) Construction quality inspection report, including:
1) Offshore docking quality inspection report; 2) Offshore coating repair quality inspection report; 3) Cathodic protection performance test report.
) Completion data, including:
1) Completion drawings:
2) Material tracking table:
3) Structural drawings indicating each weld, all welds should be marked, so that the welder or welding operator can be traced:
4) General description of the project.
4.3.4 Offshore construction of submarine pipelines
4.3.4.1 Offshore construction of submarine pipelines should be inspected according to the following items: a) Road laying (including road control, pipe joint, pipeline anchoring, pipeline crossing or crossing with cables); b) Pipeline trenching and burial (including trench depth); 3) Riser construction (including hoisting, connection with submarine pipelines, connection with platform process pipelines, and fixing) 7
SY 6500—2000
d) Whole pipe water pressure test (including test medium, test pressure, and pressure stabilization time): e) Ball-passing test:
f) Riser cathodic protection performance test.
4.3.4.2 The builder shall make the following records and submit them to the certification inspection agency for approval: a) Construction records, including:
1) Pipeline laying construction records;
2) Pipeline crossing or pipeline and submarine cable crossing construction records; 3) Foam insulation patching construction records;
4) Pipeline construction records:
6) Pressure test report.
b) Construction quality self-inspection report, including:
1) Offshore butt welding quality inspection report: 2) Offshore coating patching quality inspection report:
3) Pipeline bending detection report:
4) Riser cathodic protection performance test report. ) Completion data, including:
1) Pipeline location details;
2) Material tracking table;
3) Structural drawings indicating each weld, all welds should be uniquely identified, so that the specific welder or welding operator can be traced;
4) Technical status description of the riser system at the landing point and the riser system at the platform. 4.3.5 Offshore construction of oil (gas) terminal
4.3.5.1 The upstream construction of the oil (gas) terminal should be inspected according to the following items: 1) Offshore construction (including loading, fixed lashing, transportation, and lifting); 2) Assembly of the swivel joint, piping and hose of the single-point mooring device; 3) Construction of the anchoring system of the single-point mooring device; 4) Pressure test of the single-point mooring device tank (including test medium, test pressure, and pressure stabilization time); 5) Pressure test of the oil (gas) transmission system (including test medium, test pressure, and pressure stabilization time). 4.3.5.2 The builder shall make the following records and have them approved by the certification inspection agency: a) Construction records, including:
1) Hoisting and transportation records;
2) Mooring system construction records;
3) Pressure test records.
b) Construction quality inspection report: including:
1) Offshore welding quality inspection report;
2) Courtyard quality inspection report.
c) Completion data, including:
12 Completion drawings;
2) Material tracking table;
3) Structural drawings of each weld, all welds should be uniquely identified, which can be traced to the welder or welding author;
4) General description of the project:
4.3.6 Facility operation register
SY 6500--2000
When the facility is put into trial operation, the designer shall submit the facility operation register to the issuing inspection agency through the operator (contractor), and the issuing inspection agency shall review and approve it.
4.4 Annual inspection
4.4.1 Platform
4.4.1.1 The operator shall prepare the following materials for reference: a) Records of variable load changes; b) Damage and repair records of anti-corrosion layer; 4.4.1.2 Annual inspection of the platform shall be carried out according to the following items to confirm that it is in a valid state: a) All structures above the water surface of the platform, including the following contents. If necessary, virtual inspection shall be carried out. If cracks are found, the scope of inspection shall be determined and necessary repairs shall be required: 1 Possible damage to the flying area, orange corrosion Inspection of other chemical damage areas: 2) Stress concentration areas:
3) High load areas:
4) High cyclic load areas:
5) Discontinuous, penetrated or cross-sectional areas; 6) Nodes of major structural components;
7) Anti-slip coating or other protective layers in the splash zone, b) Local structures, including:
1) Crane base;
2) Tight support of the flare tower;
3) Module support points:
4) Living area surface fixing and support points.
c) Changes in the structure or load that may affect the overall performance of the structure; d) Safety facilities such as railings, steps and hatches of the platform, passages and stairways;
f) The structure of the pier and its protective railings;
f) If applicable, the evaluation of stress and strain measuring devices; h) Windshields, air pipes, measuring pipes, drainage pipes, etc.: i) According to the technical status of the platform, the inspector shall conduct the following inspections as necessary. 4.4.2 Subsea pipelines
4.4.2.1 The operator shall prepare the following reference materials: a) Records of abnormal conditions of pipelines and risers:
b) Pressure records of each station of the pipeline;
) Records of detection of corrosive and toxic components of the transported medium. 4.4.2.2 The annual inspection of submarine pipelines shall be carried out according to the following items to confirm that they are in effective condition: a) The integrity and effectiveness of the riser support components, bolts, flanges, and connectors; b) The integrity and effectiveness of the riser protection components; c) The external corrosion of the riser splash zone, the clamps of the support components and guides, and the external corrosion of the two coating sections; e) Check the function of the pipeline anti-corrosion system, if necessary: potential measurement or corrosion monitoring can be carried out; e) For places where the limit is considered to be likely to be reduced due to external or internal corrosion or wear, wall thickness measurement may be required, with special attention to internal corrosion of valves, bends, and diameter reductions:
4.4.3 Oil (gas) terminal
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