Main points of construction work instructions for supply pipes
Main points of construction work instructions for supply pipes 1. Project Overview: 1.1 Project (system or equipment) overview System or equipment overview (system range and equipment introduction involved in the operation) 1.2. Engineering quantity and duration. 1.2.1 Engineering quantity: No. Name specification Material unit quantity Remarks 1 2 3 4 5 6 7 8 Description: (total weight, number of welds, etc.) 1.2.2 Construction period The construction period is generally days 2. Preparation basis. List all design drawings related to the construction of the supply pipe, manufacturer's data, technology, quality, safety related regulations and specifications. The form is as follows: No. Data Name Number Remarks 1 2 3. Pre-operation conditions and preparations: 3.1 Technical preparations Completed drawings of the manufacturer's information will be reviewed, the problem will be solved, technical and safety measures will be resolved, and the two parties will sign the contract. 3.2 Operation personnel: 3.2.1 Operation staff configuration, qualification number, number of workers Requirements 1The administrative leadership 1 has the ability of construction organization and coordination, and has on-site management experience. 2 Technical person in charge 1 requires familiarity with drawings and has organizational capabilities. 3 Technician 2 requires familiarity with drawings, masters technical standards, and has installation experience. 4 Security Officer 1 has more than five years of on-site work experience, is familiar with the "Safety Work Regulations for Electric Power Construction", has strong sense of responsibility, has a spirit of dedication and love, and has passed the training of security officers and holds a certificate of employment. 5 quality staff 1 has quality inspection work experience, familiar with the "thermal power construction quality inspection and assessment standards" pipeline articles. Familiar with the construction drawing, after training, hold the certificate of employment. 6 Pipeline installation middle-level workers 4 familiar with the industrial water system pipeline installation diagram, with the basic skills of pipeline installation, can complete the installation work independently, and can guide the primary work 7 Pipeline installation 4 workers understand the industrial system pipeline installation diagram, understand the pipeline installation procedures, and complete the installation work under the guidance of high and intermediate workers. 8 Welder 8 has a welder certificate during the validity period. 9 heavy industry 2 heavy industry, crane drivers are certified to work. 10 Electrician 2 can participate in the training of the Municipal Labor Bureau and obtain a certificate before they can be employed. They are required to be familiar with the regulations and specifications, and have the ability to prevent and pre-control the safe use of electricity. 11 Remarks: All construction personnel must pass the three-level safety education and pass the examination before they can be employed; and all construction personnel must go through the technical disclosure and safety disclosure to understand the construction technical requirements and safety requirements, and sign the full staff. 12 Operators are required to undergo professional training in safety education, be certified to work, and be able to obey the command and coordinate. Those who work above 13 must pass the medical examination before they can be employed. 3.2.2 Assignment of responsibilities and authority number of the job title division of duties and authority 1Technician 1. Responsible for the technical work of replenishing water pipelines, participate in relevant drawings and review, handle design changes, prepare construction work instructions, construction budget, technical and safety measures, and preside over technical disclosure. 2. In-depth guidance on construction, timely detection and resolution of technical and quality hazards during construction, and guidance of construction in accordance with the requirements of the guide. 3. Cooperate with the team leader to carry out self-inspection work for construction acceptance. 4. Record and organize construction records and acceptance records. 5. For violations of regulations, have the right to stop it. If it is serious, it can stop it and report it to the relevant leaders in a timely manner. Team leader 2 1. Responsible for organizing construction manpower and material resources. Construction shall be carried out in strict accordance with the construction process requirements, quality requirements and safety environment requirements of the operation instructions. Full responsibility for quality and safety. 2. Do a good job in quality self-inspection and process handover for the installation of recharge water pipes. 3. During the construction process, the drawings are unclear and not constructed. If the materials are unqualified, the construction will not be carried out. The technical and safety will not be submitted to the bottom without construction. 4. Immediately report the occurrence of quality and safety accidents, and organize the employees of this class to analyze carefully according to the principle of “three not letting goâ€. 3 Operators 1. Construction shall be carried out in strict accordance with the construction process requirements, quality requirements and safety environment requirements of the operation instructions. 2. Care for the construction equipment used in the construction site and operate in strict accordance with the operating procedures. 3. Quality and safety accidents should be protected from the scene, and the relevant leaders should be promptly informed and handled. 4. If there are any difficult problems, they have the right to ask the technical staff and the team leader for a solution, and they are fully responsible for the quality of their construction. They have the right to not perform the correct and unclear command. 4Quality inspection personnel 1. Familiar with the relevant drawings and relevant quality standards, participate in the drawing review, technical submission. 2. Go deep into the construction site, master the progress and quality of the project, carry out the second-level quality inspection and work according to the quality standards, and cooperate with the quality inspection department of the project department to supervise the completion of the three-level and four-level quality acceptance. Be meticulous about work and not arrogant. 3. Proposing a veto for a plan that cannot guarantee the quality of construction, please contact the relevant leadership department. 4. Organize and summarize the quality acceptance records. 5 Safety supervision personnel 1. Fully responsible for the safety of the installation of the water supply pipeline. 2. Participate in the review of the instruction book, participate in the double signing of the safety report, and carefully check the implementation of the instruction book during the work. 3. In-depth on-site construction, timely detection of hidden dangers and unsafe factors, urged to take preventive measures, have the right to order the first stop work, and immediately study and deal with. 4. Do a good job in investigation, analysis and processing of accidents. 3.3 Workman Machine Numbers Machine Tools/Instrument Model Specifications/Precision Quantity Remarks 1 2 Note: All the tools listed above must be used within the valid period of use. 3.4 Materials and equipment Construction consumable materials are fully prepared (kerosene, gasoline, grinding wheels, steel wire, etc.) 3.5 Safety appliances helmets, non-slip shoes, safety Complete labor insurance supplies, complete equipment, complete fire safety equipment, safety protection facilities, well-ordered serial number, model specifications, precision quantity, remarks 1 2 3.6 Process handover 3.7 Other serial number content Responsible unit Remarks 1 2 4. Operating procedures, methods and contents 4.1 Operating procedures. Pipe and section steel picking → visual inspection → pipe groove processing → pipe internal cleaning → pipe matching welding → support hanger construction → support hanger installation → valve installation → system Water pressure → System flushing 4.2 Method and content 5. Control point setting and quality in operation process 5.1 Common quality target 1) The acceptance rate of sub-project acceptance is 100%; 2) According to the overall project quality objectives and professional objectives Other quality objectives of this operation; 5.2 Assurance measures and quality common disease prevention 5.2.1 Quality assurance measures 1) Strengthen the construction technology and skill training of construction personnel, and pass the assessment before construction; 2) Strengthen the responsibility of construction personnel; 3) Strengthen Process supervision and control to ensure that the order work is qualified before proceeding; 4) Ensure that the system equipment and piping are clean inside; c 5) Measures to prevent leakage of valves and flanges 5.2.2 Quality problems and prevention (see table below) Quality precautions First, equipment inspection 1 Pipe, pipe surface has slag, heavy skin and other defects 1) Pipes, pipe fittings, pipe fittings and valves should be visually inspected before use, the surface should be smooth, no sharp scratches, crack shrinkage, slag, heavy Defects such as skin 2 There are debris inside the pipe and the valve. 1) The inside of the pipe and the valve should be free of dust, scale, water, metal debris and other debris. Second, the pipeline installation 1 There are remnants in the pipeline 1) Before the pipeline is installed, the inside of the pipeline should be cleaned, and no debris should be left in the pipe. 2) If the hole is opened in the pipe during installation, it should be carried out before the pipe is welded. Be careful not to make slag or iron filings fall. Into the tube. 3) Metal saws for opening. 2 Pipe butt weld spacing is small 1) The weld position should not be less than the outer diameter of the pipe and not less than 100mm; 2) The distance between the two butt welds of the pipe should not be less than the outer diameter of the pipe and not less than 150mm. 3 The equipment is subject to additional stress, and there are debris in the equipment. 1) When the pipeline is docked with the equipment, it must not be strong against the mouth to prevent the equipment from being subjected to additional stress. 2) The welding slag, slag and other debris must not fall into the equipment. Third, valve and flange installation 1 Valve leakage 1) Carefully overhaul the valve and check the packing of the valve. Perform a hydrostatic test for each valve before installation and install it after passing the test. 3) The pressure of the valve should be uniform and tight, so as to ensure no leakage or leakage along the door. 4) Pay special attention to ensure that the tightening force of the door cover bolts is uniform during maintenance, and it is not guaranteed to change the pad when required. Special pads require the manufacturer to provide spare pads. 5) During the installation process, the installation specifications and parameters of various valves must be consistent with the design. It is strictly forbidden to use the small parameter valve for high parameters, and the valve installation adopts the listing system. 6) After the valve is overhauled, there should be inspection records, inspection numbers and valve tracking records to prevent misuse of valves and use of untested valves. 7) Before the valve is installed, the direction should be determined according to the flow direction of the medium, and cleaned and kept closed. 8) All valves are connected naturally, the hand wheel should not be facing downwards, and it is easy to operate and overhaul. It should not be strongly docked and subjected to external gravity load. The tightening force around the flange should be uniform to prevent damage to the valve due to additional stress. 2Flange leakage 1)Flange carefully check the flange sealing surface before installation, there is no radial groove, the joint surface is flat and there is no deformation, and the flange thickness should be consistent with the design. 2) When tightening the flange bolts, the symmetrical fastening method should be adopted, and the force should be uniform to ensure uniform torque. 3) Eliminate the toothed gasket during on-site construction. Do not use double flange gaskets. 4) The material of the flange bolt should be consistent with the design. 5) When the flange is connected, the flange surface should be cleaned. At the same time, the flange type should be strictly controlled, and the flanges with different specifications cannot be connected to each other. For special flanges connected to the equipment, the thickness shall not be less than the flange thickness of the same parameter. Fourth, the production and installation process of pipelines and hangers are poor 1 Pipe production and installation process is poor 1) Pipe installation direction and slope are strictly arranged according to design requirements; 2) All flange bolts on the pipe should be installed as required, the wearing direction is the same, and the exposed thread is 3-4 buckles; 3) It is strictly forbidden to spot weld and lead arc on the surface of the pipeline. After the construction, the weld should be cleaned and cleaned in time, and defects such as welding slag and welding tumor are strictly prohibited. Poor manufacturing and installation process of 2 hangers 1) Strictly implement the relevant provisions in the "Construction Process Discipline" during the construction and construction of the hangers. The production of hangers and hangers must be mechanically processed, and flame cutting is strictly prohibited. 2) Strictly follow the specifications of the hangers and hangers, the specifications and dimensions of each component as specified in the Design Manual for Steam Water Pipe Supports and Hangers provided by the Design Institute. The production of hangers of the same size and size must be uniform. 3) Before the installation of the hangers and hangers, according to the different pipelines, pipe diameters and the actual situation of the site, select the type of hangers and hangers to determine the location of the lifting points and rooting points. The spacing of the hangers on the same section of the pipe should be equal, and the spacing of the small diameter pipe hangers should be appropriate (the hydrophobic and emptying pipes are fixed by U-shaped pipe clamps). 4) The installation of the hanger should fully consider the influence of thermal expansion. The selection (fixed or sliding) of the bracket must be correct and used. Pay special attention to the installation of the U-shaped clamp. In the tight state, it belongs to the fixed bracket. When using a U card for a long time, you must consider eliminating the U-shaped card to affect the expansion problem. According to different pipeline systems, theoretical expansion of different pipe sections, and expansion direction, the inclination angle and inclination direction of the hanger and hanger in cold installation are selected to ensure that it is vertically stressed in the hot state, and it is important not to reverse the reverse. 5) In addition, it should be noted that the rooting of the hanger and hanger must be firm and reliable. The contact between the sliding bracket and the pipe must be smooth and must not be stuck to ensure that it slides freely. 6) All flange bolts on the hanger should be installed as required, the direction of wearing is the same, the exposed thread is 3-4 buckles, and the mother is used, and the bolts that do not meet the requirements of the factory are adjusted in time. 5. 3 control point setting during operation, serial operation control point inspection unit Supervision of the team's geological inspection department 1. Civil construction, equipment exchange security ***W 2. Material inspection check** 3. Internal cleaning treatment ***S 4. According to the chart blanking combination** 5. Support hanger installation** 6. Pipe and fitting installation ***S 7. Non-destructive testing ***H 8. System flushing ***H 9. Strictness test ***H 10. Check acceptance ***R R—Record confirmation point H——Stop work pending point S——Continuous monitoring and monitoring W--Testimony point 5.4 Quality standards and requirements mainly implement the following standards: The standard of serial number content 1 "Firepower Construction Quality Inspection and Evaluation Standards" (Department of Steam Turbine Edition 1998) 2 "Power Construction Construction and Acceptance Technical Specifications" (steam turbine unit articles) related content 3 "Technical Specifications for Construction and Acceptance of Electric Power Construction" (welding articles) 4 "Technical Specifications for Construction and Acceptance of Electric Power Construction" (Pipeline) 5 "Quality inspection and assessment standards for thermal power construction" (pipeline articles) 6 "Quality inspection and assessment standards for thermal power construction" (welding articles) 7 manufacturers technical information and requirements standards, etc. 8 specific requirements or standards for engineering . . . Note: When the above standards are not uniform, take higher standards or agree on the safety requirements and environmental conditions of the 6 operations. 6.1 Safety requirements of the construction. Construction risk factors and environmental factors identification and control table contents are shown in Appendix 6.2 Environmental conditions No. Environmental conditions 1 The site of the venue is smooth and tidy, and the site is cleaned. 2 Safety facilities On-site safety protection facilities are complete, and there are closed sheds. 3 night lighting, nighttime construction lighting is sufficient and safe 4 Insufficient lighting at the construction site. Install sufficient lighting fixtures at each working point and put them into normal use. 5 During the construction, the waste is not collected and collected. The waste in the construction shall be cleaned up in time, and shall not be littered and thrown away, and collected in a designated storage place. 6 Work in the windy weather, wind level 6 or above prohibiting lifting operations. When the wind is large, the work area is surrounded by crepe and windproof measures are taken. 7 work in the rain, snow weather will save water in the work area, snow cleaning 7. Appendix: 7.1 Supervision points: Serial number content for supervision requirements 1Professional construction organization design and approval before construction 2 commencement report approved before construction 3 Construction drawings will be supervised or attended by the supervisor 4 Important project construction work instructions are approved before construction 5 important project construction supervision supervisor or host 6 equipment or pipeline into the factory certificate and other complete inspection 7 Inspection of equipment and accessories before construction. W 8 Check and accept the elevation and level after the equipment is in place. W 9 civil construction, equipment exchange security W 10 internal cleaning treatment S 11 pipe, pipe fittings installation S 12 non-destructive testing H 13 system flush H 14 tightness test H 15 check acceptance R R record confirmation, W witness point, H stop work pending point, S continuous monitoring and monitoring 7.2 construction risk factors and environmental factors identification and control countermeasures table c Construction risk factors and environmental factors identification and control measures Table Project Name: ** Engineering Construction Project: Supply Water Pipeline Construction Operation Total 3 Pages Page 1 Serial Number Hazard Points and Environmental Factors Description Risk Control Technical Measures Use Checklist a venue and environment 1. The work shed is not grounded before the rain and snow come. Please check the power supply professional jc-24 2, the winds, rain, snow and other weathers above the sixth level are prohibited from open-air work and hoisting operations safety supervision and control 3. When the pipe fittings are transported, the roads are not smooth and the roads and pipe fittings are tied tightly. Jc-27 4. Check the scaffolding before construction on the scaffold; use Jc-10 after passing the test. 5. The ground assembly area is tripped and squeezed, and the site is required to be leveled. The equipment is piled up neatly and the construction workers carefully observe the surrounding environment. 6, all kinds of belts, power welding wire drawing area tripping all the belts, power welding wire are properly arranged, to avoid chaos team leader, security officer supervision and inspection 7, high-altitude work without seat belts hanging position requires protective railings or horizontal protective ropes complete Jc-01, jc-03 8, scaffolding without climbing self-locking scaffolding on the ladder position to set up climbing self-locking device Jc-4 9, the use of electric fire under the welding without protection, the correct use of fire blanket, set up special personnel monitoring Jc-13 10. Whether there is a guardrail or cover plate around the hole in the construction hole. Jc-2 11. The construction channel is not smooth, and the various materials safety personnel on the construction channel are cleared and inspected in time. 12, night construction lighting is not enough contact power supply lighting Jc-21 13. When the cross-operation is not taken, the isolation measures are not complete, and the rectification is not completed in time. It is impossible to rectify and arrange other operations for the time being. After the rectification is passed, work is carried out. jc-6 Construction risk factors and environmental factors identification and control measures Table name: ** Engineering construction project: supply water pipeline construction operation serial number dangerous point and environmental factors description proposed risk control technical measures use checklist Two construction workers 1. The new factory personnel have not undergone physical examination and have passed the on-site medical office to confirm whether they can be employed by the project department and the security officer for record. 2, the construction workers are not wearing the overalls, the construction workers are equipped with overalls and the safety equipment is checked correctly. 3. Insufficient use of safety protective equipment, incorrect construction personnel to check and correct protective equipment, unqualified timely replacement of safety protective equipment checklist 4. Before the construction personnel climbs, check whether the soles of the soles are cleaned before the height of the shoes is lifted. 5, high-altitude work incorrect use of seat belts, horizontal protective ropes, climbing self-straining equipment must be properly sling the seat belt, climb the ladder when climbing the use of the self-collecting device, the use of horizontal protective ropes without the protective railings Jc-01, jc -03, Jc-4, jc-28 6, do not understand the construction environment blind construction before the construction inspection environment, unqualified construction safety officer supervision and inspection 7. The construction personnel should rest at the temporary side. When the construction workers rest, they must go to the safe and reliable place Jc-28, jc-01 8, the use of crowbars, sledgehammers, etc. at high-altitude operations can only be used with one hand, the other hand must hold strong objects, and never both hands must work hard to supervise and inspect 9. Standing outside the railing, use the railing to lift the pipe fittings and use the safety protective equipment correctly. The lifting pipe fittings must have the official safety point supervision and inspection. 10. Construction in an unattended closed container in a closed container must be well ventilated. Personnel must be guarded during operation. Jc-19 11. Special types of work are not certified to check the status of special types of work, and the establishment of the account security officer supervision and inspection Construction risk factors and environmental factors identification and control measures Table name: ** Engineering construction project: supply water pipeline construction operation serial number dangerous point and environmental factors description proposed risk control technical measures use checklist Three construction machines 1. The electric welding machine is not used to check the first and second lines. The electric welding machine does not have the electric welding machine to be used for listing. The electric welding machine checks the working condition and the line before use. Jc-16 2. Temporary power supply for construction temporary power supply without leakage protection or power line damage. The leakage protection and power supply line must be checked. Jc-22 3When using an angle grinding wheel, wear white glasses without glasses. Jc-23 4. For small rotating tools used in construction, the small rotating tools used in construction must check the power cord, rotating part and plug integrity jc-23 5. There is a problem with the wire rope or reel of the hoist used in the construction. The signal must be smooth and the working condition of the machine is good. Jc-15 6. The wire rope used for the wire rope used in the construction without inspection and without the listing must be used for listing. It is not overloaded and the wire rope is well lubricated. Jc-14 7. The vehicle used in the construction without a license, the driver without a driver's license, etc. must have a license, and confirmed by the project department, the driver is required to carry out the supervision and inspection, and the security officer records the case. 8. The construction equipment is not properly used. The large-scale work tools in the construction are fastened with safety ropes and small tools placed in the tool bag jc-23. 9. Reinforced materials that need temporary reinforcement or temporarily reinforced materials that are temporarily stored at high heights should be reinforced. Spot-welded objects should not be used as lifting points or moving Jc-27 Description of dangerous points and environmental factors: According to the characteristics of this project, (1) Plant site and environment (2) Operation and personnel (3) Risk factors and environmental factors that may be generated by machinery and tools: Supervision and control measures including: (1) Determining supervision and control Method - R record confirmation point; W witness point; H stop work pending point; S continuous monitoring and monitoring; (2) stipulation of supervision and control responsibility - team, professional team, project department Moving Door Lock,Sliding Door Rollers,Moving Door Roller Belyn Hardware Factory , http://www.xy-hardware.com