1 Scope of responsibilities and tasks at different stages for piping layout discipline
1.1. Scope of responsibilities
1.1.1 Be responsible for all the ground and underground piping layout design specified by the process system.
1.1.2 Be responsible for reviewing the contents of piping design in the advanced certified final (ACF) by the manufacturer.
1.1.3 Be responsible for compiling, collecting and modifying the engineering requirements, specifications, manuals and other basic work related to the development of new techniques of this discipline.
1.1.4 Train designers of this discipline and improve their work quality.
1.1.5 Estimate and control the man-hour consumption of this discipline.
1.1.6 Prepare the completion report for engineering design of this discipline.
1.1.7 Assist in conducting budget, quotation, etc. at the early stage of the engineering.
1.1.8 In case required, assign design representatives to the construction site.
1.2 Tasks at each stage
1.2.1 Division of stages
The engineering design of chemical plant is usually divided into basic engineering design stage and detailed engineering design stage. At the two stages, four versions of piping layout shall be completed for the piping layout discipline.
1 At the stage of basic engineering design, the piping routing shall be studied, and the piping routing diagram (preliminary version for short) shall be drawn.
2 At the stage of detailed engineering design, piping layout shall be studied and designed, and the research version (version E for short), design version (version F for short) and construction version (version G for short) of piping layout shall be completed in turn.
1.2.2 Main task at basic engineering design stage
1 Prepare the discipline engineering requirements of the project.
2 Determine the battery limit conditions according to relevant documents (such as the terms of work division in the contract and basic data of engineering design).
3 According to piping and instrumentation (PI) diagram and versions "A", "B", "C" and "D" of equipment layout drawing, draw the piping routing diagram, verify the equipment layout plan, hoisting and maintenance plan, put forward modification opinions, and study the width and layers of pipe support, etc.
4 Study the AFP.
5 In case required, cooperate with piping machinery discipline to carry out flexibility analysis and stress calculation.
6 Cooperate with electrical, instrumentation, safety, fire protection, civil engineering and other disciplines to determine the direction of cable tray rack, the division of hazardous areas, the layout plan of fire protection facilities, the layout plan of floors, platforms and ladders of main structures, etc.
7 Estimate the design man-hours required for this discipline.
8 Attend relevant release (commending) or review meeting.
1.2.3 Main tasks at detailed engineering design stage
1 Research version (version E) piping layout drawing
1) according to PI diagram and version E of equipment layout drawing, draw the piping layout drawing of research version; put forward adjustment opinions on equipment layout;
2) accept the design conditions of relevant disciplines and verify whether the design requirements are met;
3) propose conditions to relevant disciplines, such as opening of equipment foundation, floor, wall and platform, direction of equipment nozzle and pre-welded parts;
4) determine the layout plan of underground piping, location of eye wash and hose station, etc.;
5) cooperate with piping machinery discipline (also called piping mechanics discipline, the same below) for stress calculation;
6) cooperate with instrumentation and electrical discipline to determine the location of electrical distribution cabinet and cable tray rack of instrument box (panel);
7) cooperate with the material control discipline for the second material statistics.
2 Piping layout drawing of design version (version F)
1) according to piping and instrumentation diagram and version F of equipment layout drawing, draw the layout drawing of design version, and put forward modification opinions;
2) determine the instrument location on the piping layout drawing;
3) cooperate with piping machinery discipline to determine the location of piping support on piping layout drawing;
4) sign drawings with relevant disciplines;
5) draw the isometric drawing of the piping and cooperate with the material control discipline to make final material statistics;
6) carry out heat tracing design;
7) check the final conditions of relevant disciplines;
8) put forward the final conditions to relevant disciplines, such as nozzle direction diagram, floor, platform elevation, location and dimension.
3 Construction version (version G) piping layout drawing
1) modify the piping layout drawing and related documents according to the countersigning opinions;
2) improve the remaining issues, such as some "undetermined" issues, and issues found in drawing isometric drawings;
3) complete the modifications required due to the influence of heat tracing design.
2 Working procedure diagram of piping layout discipline at engineering design stage
2.0.1 See Figure 2.0.1 working procedure diagram of piping layout discipline at engineering design stage for the working procedure diagram of piping layout discipline at engineering design stage
1 Scope of responsibilities and tasks at different stages for piping layout discipline
2 Working procedure diagram of piping layout discipline at engineering design stage
3 Design conditions of piping layout discipline (summary)
4 Quality assurance measures for design of piping layout discipline
5 Outline of design check and review for piping layout discipline
6 Measures for information management of piping layout discipline
7 Requirements on color pens used by the check and review personnel
Standard
HG/T 20549.3-1998 standard piping layout for chemical plant (English Version)
1 Scope of responsibilities and tasks at different stages for piping layout discipline
1.1. Scope of responsibilities
1.1.1 Be responsible for all the ground and underground piping layout design specified by the process system.
1.1.2 Be responsible for reviewing the contents of piping design in the advanced certified final (ACF) by the manufacturer.
1.1.3 Be responsible for compiling, collecting and modifying the engineering requirements, specifications, manuals and other basic work related to the development of new techniques of this discipline.
1.1.4 Train designers of this discipline and improve their work quality.
1.1.5 Estimate and control the man-hour consumption of this discipline.
1.1.6 Prepare the completion report for engineering design of this discipline.
1.1.7 Assist in conducting budget, quotation, etc. at the early stage of the engineering.
1.1.8 In case required, assign design representatives to the construction site.
1.2 Tasks at each stage
1.2.1 Division of stages
The engineering design of chemical plant is usually divided into basic engineering design stage and detailed engineering design stage. At the two stages, four versions of piping layout shall be completed for the piping layout discipline.
1 At the stage of basic engineering design, the piping routing shall be studied, and the piping routing diagram (preliminary version for short) shall be drawn.
2 At the stage of detailed engineering design, piping layout shall be studied and designed, and the research version (version E for short), design version (version F for short) and construction version (version G for short) of piping layout shall be completed in turn.
1.2.2 Main task at basic engineering design stage
1 Prepare the discipline engineering requirements of the project.
2 Determine the battery limit conditions according to relevant documents (such as the terms of work division in the contract and basic data of engineering design).
3 According to piping and instrumentation (PI) diagram and versions "A", "B", "C" and "D" of equipment layout drawing, draw the piping routing diagram, verify the equipment layout plan, hoisting and maintenance plan, put forward modification opinions, and study the width and layers of pipe support, etc.
4 Study the AFP.
5 In case required, cooperate with piping machinery discipline to carry out flexibility analysis and stress calculation.
6 Cooperate with electrical, instrumentation, safety, fire protection, civil engineering and other disciplines to determine the direction of cable tray rack, the division of hazardous areas, the layout plan of fire protection facilities, the layout plan of floors, platforms and ladders of main structures, etc.
7 Estimate the design man-hours required for this discipline.
8 Attend relevant release (commending) or review meeting.
1.2.3 Main tasks at detailed engineering design stage
1 Research version (version E) piping layout drawing
1) according to PI diagram and version E of equipment layout drawing, draw the piping layout drawing of research version; put forward adjustment opinions on equipment layout;
2) accept the design conditions of relevant disciplines and verify whether the design requirements are met;
3) propose conditions to relevant disciplines, such as opening of equipment foundation, floor, wall and platform, direction of equipment nozzle and pre-welded parts;
4) determine the layout plan of underground piping, location of eye wash and hose station, etc.;
5) cooperate with piping machinery discipline (also called piping mechanics discipline, the same below) for stress calculation;
6) cooperate with instrumentation and electrical discipline to determine the location of electrical distribution cabinet and cable tray rack of instrument box (panel);
7) cooperate with the material control discipline for the second material statistics.
2 Piping layout drawing of design version (version F)
1) according to piping and instrumentation diagram and version F of equipment layout drawing, draw the layout drawing of design version, and put forward modification opinions;
2) determine the instrument location on the piping layout drawing;
3) cooperate with piping machinery discipline to determine the location of piping support on piping layout drawing;
4) sign drawings with relevant disciplines;
5) draw the isometric drawing of the piping and cooperate with the material control discipline to make final material statistics;
6) carry out heat tracing design;
7) check the final conditions of relevant disciplines;
8) put forward the final conditions to relevant disciplines, such as nozzle direction diagram, floor, platform elevation, location and dimension.
3 Construction version (version G) piping layout drawing
1) modify the piping layout drawing and related documents according to the countersigning opinions;
2) improve the remaining issues, such as some "undetermined" issues, and issues found in drawing isometric drawings;
3) complete the modifications required due to the influence of heat tracing design.
2 Working procedure diagram of piping layout discipline at engineering design stage
2.0.1 See Figure 2.0.1 working procedure diagram of piping layout discipline at engineering design stage for the working procedure diagram of piping layout discipline at engineering design stage
Contents of HG/T 20549.3-1998
1 Scope of responsibilities and tasks at different stages for piping layout discipline
2 Working procedure diagram of piping layout discipline at engineering design stage
3 Design conditions of piping layout discipline (summary)
4 Quality assurance measures for design of piping layout discipline
5 Outline of design check and review for piping layout discipline
6 Measures for information management of piping layout discipline
7 Requirements on color pens used by the check and review personnel
