Some standard content:
Industry Standard of the People's Republic of China
Content and Depth Unification of Chemical Process Design and Construction Drawings
HG20519-92
Editor: Chemical Process Piping Design Technology Center of the Ministry of Chemical IndustryApproved by: Chemical
Engineering Construction Standard Editing Center of the Ministry of Chemical Industry
Beijing, 1993
Ministry of Chemical Industry Document
Chemical Foundation (1993) No. 30
Notice on Issuing the Chemical Industry Standard "Content and Depth Unification of Chemical Process Design and Construction Drawings"
To all provincial, autonomous region, municipality directly under the Central Government, and independently planned cities, and all relevant design and construction units: The "Content and Depth Unification of Chemical Process Design and Construction Drawings" compiled by the Process Piping Design Technology Center of the Ministry of Chemical Industry has been reviewed and approved as a chemical industry standard with the number HG20519-92. It will be implemented from April 1993.
This standard is managed by the Process Piping Design Technology Center of the Ministry of Chemical Industry, and published and distributed by the Engineering Construction Standard Editing Center of the Ministry of Chemical Industry.
Ministry of Chemical Industry
January 18, 1993
Pipeline and instrument flow chart
HG20519.5-92
Pipeline and instrument flow chart (PID
HG20519.5-92
1 Overview
1.0.1 This piping and instrument flow chart is applicable to chemical process equipment. It uses a graphical method to show the chemical process flow and all the required equipment, machines, pipelines, valves, pipe fittings and instruments. It is the basis for design and construction, and also a guide for operation and maintenance.
1.0.2 Classification
Pipeline and instrument flow charts are divided into process piping and instrument flow charts; auxiliary system piping and instrument flow charts. Process The piping and instrumentation flow chart is a flow chart with process piping and instrumentation as the main body. Auxiliary systems include instrument air required for normal production and start-up and shutdown processes, factory air, fuel (gas or oil) for heating, volatile gas for desorption and replacement, lubricating oil and sealing oil of machine pumps, venting system, etc., which are generally drawn separately according to the type of medium.
1.0.3 Piping and instrumentation flow charts are generally drawn based on the main items (sections or procedures) of the process equipment, and can also be drawn as units of equipment.
2 General regulations
2.0.1 Figure
Pipeline and instrumentation flow charts use A1. Banner drawing, no limit on the number, A2 can be used for simple processes. 2.0.2 Proportion
Pipeline and instrumentation flow charts are not drawn to scale, - generally Equipment (machine) legends are only relative in proportion. The proportion of equipment (machine) that is too large can be appropriately reduced, and the proportion of equipment (machine) that is too small can be appropriately enlarged. The height of each device can be relatively indicated. The entire drawing should be coordinated and beautiful. 2.0.3 Drawing method of the same system
When a process includes two or more identical systems (such as polymerization kettle, air flow drying, post-treatment, etc.): Only one system flow chart can be drawn, and the remaining systems are represented by a thin double-dash box, and the system name and number are indicated in the box. When the process is more complicated, a separate local system flow chart can be drawn. In the overall flow chart, the local system is represented by a thin double-dash box, and the system name, number and local system flow chart are indicated in the box. Figure number, such as: 15
The first-××××
The system is shown in Figure ××
2.0.4 Reuse design
The second ××××
The system is shown in Figure ××
The third ××××
The system is shown in Figure ××
For the piping and instrumentation flow chart that partially reuses the finalized design in the process flow or adopts the complete set of equipment (units) provided by the manufacturer, the reused part or the complete set part is shown in the figure with a double-dotted line frame, and the name, position number or number is indicated in the frame, and the relevant drawing number is filled in, and text is added to explain it when necessary. 2.0.5 Lines and fonts
In the process piping and instrumentation flow chart, the process material pipeline uses thick solid lines, the auxiliary pipeline uses medium thick lines, and the others use thin solid lines. In the auxiliary system piping and instrumentation flow chart, the main pipe uses thick solid lines, the corresponding branch pipe uses medium thick lines, and the others use thin solid lines. Equipment (machine) valves, pipe fittings and pipe accessories in the pipeline and instrument flow chart are drawn with thin solid lines (except for special requirements).
Specific requirements for drawing lines and fonts shall be implemented in accordance with HG20519.28-92. 3 Content and depth of process pipeline and instrument flow chart 3.0.1 Draw all equipment (machines) listed in the process equipment list. Equipment and machine graphics shall be drawn in accordance with design regulations HG20519.31-92. The graphics of equipment and machines not specified can be drawn according to their actual appearance and internal structural characteristics, only taking relative size, not according to the actual scale.
If possible, all interfaces on equipment and machines (including manholes, handholes, discharge ports, etc.) are drawn, among which pipe openings related to piping and external (such as drain ports, exhaust ports, vent ports and instrument interfaces of directly connected valves, etc.) must be drawn. Pipe openings are generally represented by single thin solid lines, or they can be the same width as the connected pipeline line. Individual pipe openings are allowed to be drawn with double thin solid lines. Generally, the flange of the pipe mouth of the equipment may not be drawn.
The position arrangement of each equipment and machine in the diagram should be convenient for pipeline connection and marking. The relative height of those with close logistics relationship (such as liquid in the high-level tank flowing into the storage tank by gravity, liquid pumped into the top of the tower, etc.) should be consistent with the actual layout of the equipment. Generally, the equipment position number should be marked in two places: the first is above or below the diagram, which should be arranged neatly and facing the equipment as much as possible, and the equipment name should be marked below the position number line. The second is inside or near the equipment, where only the position number is noted, not the name. When several equipment or machines are arranged vertically, their position numbers and names can be marked in order from top to bottom, or they can be marked horizontally. The position number and name of the equipment (machine) are marked as shown in the following figure: 16
xx heat exchanger
xx heat exchanger
xxx absorption tower
For equipment and machines that need to be insulated, a section of insulation layer should be drawn at the corresponding part, and its insulation level should be noted if necessary; if there is heating, a section of heating pipe should also be drawn at the corresponding part as shown:
, and the heating type and medium code can be noted if necessary. As shown in the following figure, insulation layer
heating pipe
underground or semi-underground equipment and machines should indicate a section of related ground on the drawing. The ground is represented by 7TT7TT. The support and base (skirt) of the equipment and machine can be omitted. The scope of the reused original equipment, machine and the pipelines contained in it can be noted in the block diagram, and necessary text annotations and explanations can be added.
The internal parts of the equipment and machine are related to the process flow, such as the buffer and safety valves of the column pump; the exhaust port on the tube sheet of the shell and tube heat exchanger; the liquid level gauge on the equipment, etc. They do not necessarily need external pipe connection, but they are necessary for production operation and detection, and some need to be debugged, so they should be indicated on the drawing. 3.0.2 Draw and mark all pipelines, including valves, pipe fittings, and pipeline accessories. Draw and mark all process pipelines and a section of auxiliary pipelines related to the process, draw and mark the valves, pipe fittings and pipeline accessories on the above pipelines (excluding the connectors between pipelines, such as elbows, tees, flanges, etc.), but flanges and threaded connectors added for installation and maintenance 17
and other reasons still need to be drawn and marked. The process pipeline includes the material pipeline used for normal operation; the process discharge system pipeline: start, stop and necessary temporary pipelines. Each pipeline must be numbered and marked, see "Pipeline Marking" (HG20519.37-92) for details. Each pipeline should be indicated by an arrow to indicate the material flow direction (arrows are drawn on the pipeline). When the pipeline on the drawing is related to other drawings, its endpoint is generally drawn on the left or right side of the drawing, and the flow direction (in or out) is marked with a hollow arrow, indicating the pipeline number or the incoming and outgoing equipment, machine position number, main item number or device number (or name) and the pipeline and instrument flow chart number (the drawing number or the sequence number of the drawing number is written in the aforementioned hollow arrow, see HG20519.32-92). If the nominal diameter of valves, pipe fittings and pipe accessories on the pipeline is different from the nominal diameter of the pipeline, their size should be noted, and their model should be noted if necessary. Special valves and pipe accessories among them should also be classified and numbered, and explained in text, enlarged drawings and data tables when necessary. If the same pipeline number is different only in diameter, only the diameter can be noted, such as: PG1001-150
150X100
PG1302-100
If the same pipeline number is different in pipeline grade, the grade boundary should be indicated and the corresponding pipeline grade should be noted. For example: Before the pipeline grade and material selection table is implemented, it is temporarily marked as shown in the figure below, such as: the larger end nominal diameter multiplied by the smaller end nominal diameter of the reducer, such as: the heat tracing pipe of the 200×150
pipeline should be fully drawn, and the jacketed pipe can only draw a small section at both ends. For other insulated pipelines, the insulation legend should be drawn at the appropriate position.
When there are branch pipelines, the positions of the main pipe and branch pipes on the drawing must be accurate and consistent with the pipeline layout drawing. Pipelines, valves, pipe fittings and pipeline accessories must be drawn according to the regulations (HG20519.32-92). 3.C.3 Draw and mark all detection instruments, regulation and control systems, and analysis and sampling systems. Draw and mark all process-related detection instruments, regulation and control systems, analysis and sampling points and sampling valves (groups). The symbols, codes and representation methods are specified in the first page and comply with the regulations of the automatic control profession. The detection instruments are drawn and marked according to their detection items, functions, and locations (on-site or in the control room). The pipelines, valves, pipe fittings, etc. that need to be drawn shall be completed by automatic control professionals. The regulation and control system shall draw the pipelines, valves, pipe fittings, and pipeline accessories included one by one according to its specific composition form (single valve, four valves, etc.), and the items, functions, and locations of its regulation and control shall be noted respectively. Its number shall be determined by the instrumentation profession. The characteristics of the regulating valve itself 18
should also be indicated, such as the transmission form: pneumatic, electric or hydraulic; air-open or air-closed; whether there is a manual control mechanism: whether the valve body or valve group has a discharge valve and other characteristics, etc. If necessary, the professional division of labor and scope should also be marked or explained. The analytical sampling points are marked and numbered at the selected location (equipment nozzle or pipeline), and the sampling valve (group) and sampling cooler should also be drawn and marked or annotated with text. As shown in the following figure: 1301
A circle with a diameter of 10mm
Note: A represents the manual sampling point, and 1301 is the sampling point number (13 is the main item number, and 01 is the sampling point sequence number). 3.0.4 Scope of supply of complete sets of equipment (units): The complete sets of equipment (units) provided by the manufacturer are shown in the pipeline instrument flow chart as a double-dotted line box diagram to indicate the scope of supply of the manufacturer. The equipment position number is indicated in the block diagram, and the pipelines and instrument lines connected to the outside are drawn. If the pipeline and instrument flow chart provided by the manufacturer is used, the drawing number of Guangfang should be indicated. You can also draw its simple appearance (refer to the equipment and machine legend) and the pipelines connected to the outside, and indicate the position number, the pipeline and instrument flow chart of the equipment or unit itself (this flow chart is drawn separately) drawing number.
If the process flow of the complete set of equipment (unit) is simple, it can be treated as general equipment (machine), but the scope of supply of the manufacturer still needs to be noted. Generally, the pipes, valves, pipe fittings and pipe accessories supplied with the complete set of equipment (unit) are marked with text - seller (the English letter BS can also be added). 3.0.5 Special design requirements:
For some special design requirements, annotations or simple drawings can be added to the pipeline and instrument flow chart. In the design, there may be certain special requirements between the equipment (machine), pipelines, valves, pipe fittings and pipe accessories or themselves, and these requirements should be indicated in the corresponding parts of the diagram. These special requirements generally include: (1) Special positioning dimensions
If there are requirements for the relative height difference between equipment, the minimum limit size must be noted, such as: the industry
The liquid seal pipe should indicate its minimum height. When its position is related to the equipment (or pipeline), the required minimum distance should be noted, such as:
When there are requirements for the position of the different diameter pipe, its positioning dimensions should be marked: When the length of the pipe section is required: its length dimension limit must be noted. For example:
When the branch pipe is connected to the main pipe, there are special requirements for the position of the door on the branch pipe. 3. The size should be marked. Relative: Main pipe
Minimum (large)
When the branch pipe is connected to the main pipe, there are requirements for the pipe grade boundary position on the branch pipe. The size and pipe grade should be marked. For example: L2B
For the safety valve inlet pipe When there is a limit on the pressure drop, the length of the pipe section and the number of heads should be indicated near the pipeline, such as: the longest pipe is 3m, and the maximum number of heads is 2.
When there are requirements for the minimum height of the flare and vent pipe, and the lowest point height of the discharge point, they should be marked. (2) Requirements for the length of the straight pipe section before and after the flow orifice. (3) Requirements for the slope and gradient of the pipeline.
(4) Special requirements for the installation position of some valves, pipe fittings or branches: requirements for the use status of some valves and pipe fittings (for example, whether the valve is open or closed under normal operating conditions: whether it is a temporary valve or fitting, etc.), (5) Some other special design requirements.
For these special requirements, words and numbers should be added, and detailed drawings should be provided if necessary. 3.0.6 Notes
In the design When some special requirements and related matters are not suitable for expression or are not clear on the drawing, you can add notes to the drawing and use text, tables, and simple diagrams to explain. For example, the description of the design requirements for high-point venting and low-point discharge: the length requirements of the straight pipe section at the pump inlet; the relevant instructions for the flow-limiting orifice plate, etc. The general notes are added near the drawing label (above or on the left). 4 Content and depth of auxiliary system piping and instrument flow charts 4.0.1 General provisions
Auxiliary system piping and instrument flow charts are generally compiled according to the device (or main item) as a unit and according to different media types. When the process is simple, the piping and instrument flow charts for various media can be drawn on one drawing; if the process is complex and there are many types of media, they should be drawn separately. Whether the piping and instrument flow charts for various media are drawn as a single sheet or multiple sheets, It must be easy to identify and distinguish. The main pipe distribution and branch pipe connection on the diagram must be consistent with the process piping and instrumentation flow chart. 4.0.2 Content and depth
The users (equipment or main item or device) of each auxiliary material on the pipeline and instrumentation flow chart are represented by a box graphic, and the user name, number (or position number), and drawing number are indicated in the box. The pipeline number of the medium pipeline in the process piping and instrumentation flow chart and the pipeline number in this drawing are respectively indicated inside and outside the figure. This content can also be drawn out in a single column table for explanation. The drawing content and depth of the equipment (machine), pipeline, pipe fittings, valves, pipeline accessories, etc. of the auxiliary system shall be compiled according to 3.0.1 and 3.0.2; the corresponding instrument control and analysis sampling shall be compiled according to 3.0.3; and the others shall be compiled according to 3.0.43.0.5 and 3.0.6. The content that has been clearly expressed in the process piping and instrumentation flow chart may not be repeated. 5 Explanation
For engineering projects with simple processes and few equipment, the content of the auxiliary system pipeline instrumentation flow chart can be incorporated into the process piping and instrumentation flow chart. No separate drawing is required.
If the content of the auxiliary system piping and instrumentation flow chart (or one of its contents) is clearly indicated in the pipeline and instrumentation flow charts related to other specialties or main items, it can be no longer drawn. When designing for reuse design according to local conditions, the modified part can be marked with a square frame on the reuse design related drawings, and a modification mark can be added. If necessary, a pipeline and instrumentation flow chart of the modified part can be drawn separately, and the relevant matters of the modification can be noted.
See attached figure
Example Figure 1: Ammonia recovery pipeline and instrument flow chart Example Figure 2: Decarbonization auxiliary system pipeline and instrument flow chart 21
G78532-8
ALA00/40
450702:[2 1 00-138 P12
41.893326.18
Ao/80-25
Aw/looy
V1422_LI8.
VT805-80
015018
N85-25 LID
04·80
CHRA-200
CwS.001-280
There are two sheets of pipelines and instrument flow charts for ammonia solid collection process. All pipe drain valves are DN15 except those specified. All pressure gauge coupling valves are DN6.
The sampling width is D6.
The length of the inlet straight pipe is not less than 150m
This solid is inspected and tested according to the weight of synthetic ammonia. *-60--3. Draw and mark all the detection instruments, control systems, and analysis and sampling systems. Draw and mark all the detection instruments, control systems, analysis and sampling points, and sampling valves (groups) related to the process. The symbols, codes, and representation methods are specified in the diagram on the front page and comply with the regulations of the automatic control profession. The detection instruments are drawn and marked according to their detection items, functions, and locations (on-site or in the control room). The pipelines, valves, and pipe fittings required to be drawn shall be completed by automatic control professionals. The control system shall draw the pipelines, valves, pipe fittings, and pipe accessories included in the control system according to its specific composition form (single valve, four valves, etc.), and the items, functions, and locations of its control shall be noted respectively. The number shall be determined by the instrument professional. The characteristics of the control valve itself 18
shall also be noted, such as the transmission form: pneumatic, electric, or hydraulic; air-open or air-closed; whether there is a manual control mechanism: whether the valve body or valve group has a discharge valve and other characteristics, etc. If necessary, the professional division of labor and scope shall also be marked or explained. The analytical sampling points are marked and numbered at the selected positions (equipment nozzles or pipelines), and the sampling valves (groups) and sampling coolers should also be drawn and marked or indicated with text. As shown in the following figure: 1301
A circle with a diameter of 10mm
Note: A represents the manual sampling point, 1301 is the sampling point number (13 is the main item number, 01 is the sampling point sequence number). 3.0.4 Scope of supply of complete equipment (unit): The complete equipment (unit) provided by the manufacturer is shown in the pipeline instrument flow chart as a double-dotted box diagram to indicate the scope of supply of the manufacturer. Indicate the equipment position number in the box diagram, draw the pipeline and instrument lines connected to the outside world, and if the pipeline and instrument flow chart provided by the manufacturer is used, the Guangfang drawing number should be indicated. You can also draw its simple appearance (refer to the equipment and machine legend) and the pipeline connected to the outside, and indicate the position number, the pipeline and instrument flow chart of the equipment or unit itself (this flow chart is drawn separately) and the drawing number.
If the process flow of the complete set of equipment (unit) is simple, it can be treated as general equipment (machine), but the scope of supply of the manufacturer still needs to be noted. Generally, the pipes, valves, pipe fittings and pipe accessories supplied with the complete set of equipment (unit) are marked with the text "Seller" (the English letters BS can also be added). 3.0.5 Special design requirements:
For some special design requirements, annotations or simple diagrams can be added to the pipeline and instrument flow chart. In the design, there may be certain special requirements for the equipment (machine), pipelines, valves, pipe fittings and pipe accessories to each other or themselves, and these requirements should be indicated in the corresponding parts of the diagram. These special requirements generally include: (1) Special positioning dimensions
If there are requirements for the relative height difference between equipment, the minimum limit size must be noted, such as: the industry
The liquid seal pipe should indicate its minimum height. When its position is related to the equipment (or pipeline), the required minimum distance should be noted, such as:
When there are requirements for the position of the different diameter pipe, its positioning dimensions should be marked: When the length of the pipe section is required: its length dimension limit must be noted. For example:
When the branch pipe is connected to the main pipe, there are special requirements for the position of the door on the branch pipe. 3. The size should be marked. Relative: Main pipe
Minimum (large)
When the branch pipe is connected to the main pipe, there are requirements for the pipe grade boundary position on the branch pipe. The size and pipe grade should be marked. For example: L2B
For the safety valve inlet pipe When there is a limit on the pressure drop, the length of the pipe section and the number of heads should be indicated near the pipeline, such as: the longest pipe is 3m, and the maximum number of heads is 2.
When there are requirements for the minimum height of the flare and vent pipe, and the lowest point height of the discharge point, they should be marked. (2) Requirements for the length of the straight pipe section before and after the flow orifice. (3) Requirements for the slope and gradient of the pipeline.
(4) Special requirements for the installation position of some valves, pipe fittings or branches: requirements for the use status of some valves and pipe fittings (for example, whether the valve is open or closed under normal operating conditions: whether it is a temporary valve or fitting, etc.), (5) Some other special design requirements.
For these special requirements, words and numbers should be added, and detailed drawings should be provided if necessary. 3.0.6 Notes
In the design When some special requirements and related matters are not suitable for expression or are not clear on the drawing, you can add notes to the drawing and use text, tables, and simple diagrams to explain. For example, the description of the design requirements for high-point venting and low-point discharge: the length requirements of the straight pipe section at the pump inlet; the relevant instructions for the flow-limiting orifice plate, etc. The general notes are added near the drawing label (above or on the left). 4 Content and depth of auxiliary system piping and instrument flow charts 4.0.1 General provisions
Auxiliary system piping and instrument flow charts are generally compiled according to the device (or main item) as a unit and according to different media types. When the process is simple, the piping and instrument flow charts for various media can be drawn on one drawing; if the process is complex and there are many types of media, they should be drawn separately. Whether the piping and instrument flow charts for various media are drawn as a single sheet or multiple sheets, It must be easy to identify and distinguish. The main pipe distribution and branch pipe connection on the diagram must be consistent with the process piping and instrumentation flow chart. 4.0.2 Content and depth
The users (equipment or main item or device) of each auxiliary material on the pipeline and instrumentation flow chart are represented by a box graphic, and the user name, number (or position number), and drawing number are indicated in the box. The pipeline number of the medium pipeline in the process piping and instrumentation flow chart and the pipeline number in this drawing are respectively indicated inside and outside the figure. This content can also be drawn out in a single column table for explanation. The drawing content and depth of the equipment (machine), pipeline, pipe fittings, valves, pipeline accessories, etc. of the auxiliary system shall be compiled according to 3.0.1 and 3.0.2; the corresponding instrument control and analysis sampling shall be compiled according to 3.0.3; and the others shall be compiled according to 3.0.43.0.5 and 3.0.6. The content that has been clearly expressed in the process piping and instrumentation flow chart may not be repeated. 5 Explanation
For engineering projects with simple processes and few equipment, the content of the auxiliary system pipeline instrumentation flow chart can be incorporated into the process piping and instrumentation flow chart. No separate drawing is required.
If the content of the auxiliary system piping and instrumentation flow chart (or one of its contents) is clearly indicated in the pipeline and instrumentation flow charts related to other specialties or main items, it can be no longer drawn. When designing for reuse design according to local conditions, the modified part can be marked with a square frame on the reuse design related drawings, and a modification mark can be added. If necessary, a pipeline and instrumentation flow chart of the modified part can be drawn separately, and the relevant matters of the modification can be noted.
See attached figure
Example Figure 1: Ammonia recovery pipeline and instrument flow chart Example Figure 2: Decarbonization auxiliary system pipeline and instrument flow chart 21
G78532-8
ALA00/40
450702:[2 1 00-138 P12
41.893326.18
Ao/80-25
Aw/looy
V1422_LI8.
VT805-80
015018
N85-25 LID
04·80
CHRA-200
CwS.001-280
There are two sheets of pipelines and instrument flow charts for ammonia solid collection process. All pipe drain valves are DN15 except those specified. All pressure gauge coupling valves are DN6.
The sampling width is D6.
The length of the inlet straight pipe is not less than 150m
This solid is inspected and tested according to the weight of synthetic ammonia. *-60--3. Draw and mark all the detection instruments, control systems, and analysis and sampling systems. Draw and mark all the detection instruments, control systems, analysis and sampling points, and sampling valves (groups) related to the process. The symbols, codes, and representation methods are specified in the diagram on the front page and comply with the regulations of the automatic control profession. The detection instruments are drawn and marked according to their detection items, functions, and locations (on-site or in the control room). The pipelines, valves, and pipe fittings required to be drawn shall be completed by automatic control professionals. The control system shall draw the pipelines, valves, pipe fittings, and pipe accessories included in the control system according to its specific composition form (single valve, four valves, etc.), and the items, functions, and locations of its control shall be noted respectively. The number shall be determined by the instrument professional. The characteristics of the control valve itself 18
shall also be noted, such as the transmission form: pneumatic, electric, or hydraulic; air-open or air-closed; whether there is a manual control mechanism: whether the valve body or valve group has a discharge valve and other characteristics, etc. If necessary, the professional division of labor and scope shall also be marked or explained. The analytical sampling points are marked and numbered at the selected positions (equipment nozzles or pipelines), and the sampling valves (groups) and sampling coolers should also be drawn and marked or indicated with text. As shown in the following figure: 1301
A circle with a diameter of 10mm
Note: A represents the manual sampling point, 1301 is the sampling point number (13 is the main item number, 01 is the sampling point sequence number). 3.0.4 Scope of supply of complete equipment (unit): The complete equipment (unit) provided by the manufacturer is shown in the pipeline instrument flow chart as a double-dotted box diagram to indicate the scope of supply of the manufacturer. Indicate the equipment position number in the box diagram, draw the pipeline and instrument lines connected to the outside world, and if the pipeline and instrument flow chart provided by the manufacturer is used, the Guangfang drawing number should be indicated. You can also draw its simple appearance (refer to the equipment and machine legend) and the pipeline connected to the outside, and indicate the position number, the pipeline and instrument flow chart of the equipment or unit itself (this flow chart is drawn separately) and the drawing number.
If the process flow of the complete set of equipment (unit) is simple, it can be treated as general equipment (machine), but the scope of supply of the manufacturer still needs to be noted. Generally, the pipes, valves, pipe fittings and pipe accessories supplied with the complete set of equipment (unit) are marked with the text "Seller" (the English letters BS can also be added). 3.0.5 Special design requirements:
For some special design requirements, annotations or simple diagrams can be added to the pipeline and instrument flow chart. In the design, there may be certain special requirements for the equipment (machine), pipelines, valves, pipe fittings and pipe accessories to each other or themselves, and these requirements should be indicated in the corresponding parts of the diagram. These special requirements generally include: (1) Special positioning dimensions
If there are requirements for the relative height difference between equipment, the minimum limit size must be noted, such as: the industry
The liquid seal pipe should indicate its minimum height. When its position is related to the equipment (or pipeline), the required minimum distance should be noted, such as:
When there are requirements for the position of the different diameter pipe, its positioning dimensions should be marked: When the length of the pipe section is required: its length dimension limit must be noted. For example:
When the branch pipe is connected to the main pipe, there are special requirements for the position of the door on the branch pipe. 3. The size should be marked. Relative: Main pipe
Minimum (large) wwW.bzxz.Net
When the branch pipe is connected to the main pipe, there are requirements for the pipe grade boundary position on the branch pipe. The size and pipe grade should be marked. For example: L2B
For the safety valve inlet pipe When there is a limit on the pressure drop, the length of the pipe section and the number of heads should be indicated near the pipeline, such as: the longest pipe is 3m, and the maximum number of heads is 2.
When there are requirements for the minimum height of the flare and vent pipe, and the lowest point height of the discharge point, they should be marked. (2) Requirements for the length of the straight pipe section before and after the flow orifice. (3) Requirements for the slope and gradient of the pipeline.
(4) Special requirements for the installation position of some valves, pipe fittings or branches: requirements for the use status of some valves and pipe fittings (for example, whether the valve is open or closed under normal operating conditions: whether it is a temporary valve or fitting, etc.), (5) Some other special design requirements.
For these special requirements, words and numbers should be added, and detailed drawings should be provided if necessary. 3.0.6 Notes
In the design When some special requirements and related matters are not suitable for expression or are not clear on the drawing, you can add notes to the drawing and use text, tables, and simple diagrams to explain. For example, the description of the design requirements for high-point venting and low-point discharge: the length requirements of the straight pipe section at the pump inlet; the relevant instructions for the flow-limiting orifice plate, etc. The general notes are added near the drawing label (above or on the left). 4 Content and depth of auxiliary system piping and instrument flow charts 4.0.1 General provisions
Auxiliary system piping and instrument flow charts are generally compiled according to the device (or main item) as a unit and according to different media types. When the process is simple, the piping and instrument flow charts for various media can be drawn on one drawing; if the process is complex and there are many types of media, they should be drawn separately. Whether the piping and instrument flow charts for various media are drawn as a single sheet or multiple sheets, It must be easy to identify and distinguish. The main pipe distribution and branch pipe connection on the diagram must be consistent with the process piping and instrumentation flow chart. 4.0.2 Content and depth
The users (equipment or main item or device) of each auxiliary material on the pipeline and instrumentation flow chart are represented by a box graphic, and the user name, number (or position number), and drawing number are indicated in the box. The pipeline number of the medium pipeline in the process piping and instrumentation flow chart and the pipeline number in this drawing are respectively indicated inside and outside the figure. This content can also be drawn out in a single column table for explanation. The drawing content and depth of the equipment (machine), pipeline, pipe fittings, valves, pipeline accessories, etc. of the auxiliary system shall be compiled according to 3.0.1 and 3.0.2; the corresponding instrument control and analysis sampling shall be compiled according to 3.0.3; and the others shall be compiled according to 3.0.43.0.5 and 3.0.6. The content that has been clearly expressed in the process piping and instrumentation flow chart may not be repeated. 5 Explanation
For engineering projects with simple processes and few equipment, the content of the auxiliary system pipeline instrumentation flow chart can be incorporated into the process piping and instrumentation flow chart. No separate drawing is required.
If the content of the auxiliary system piping and instrumentation flow chart (or one of its contents) is clearly indicated in the pipeline and instrumentation flow charts related to other specialties or main items, it can be no longer drawn. When designing for reuse design according to local conditions, the modified part can be marked with a square frame on the reuse design related drawings, and a modification mark can be added. If necessary, a pipeline and instrumentation flow chart of the modified part can be drawn separately, and the relevant matters of the modification can be noted.
See attached figure
Example Figure 1: Ammonia recovery pipeline and instrument flow chart Example Figure 2: Decarbonization auxiliary system pipeline and instrument flow chart 21
G78532-8
ALA00/40
450702:[2 1 00-138 P12
41.893326.18
Ao/80-25
Aw/looy
V1422_LI8.
VT805-80
015018
N85-25 LID
04·80
CHRA-200
CwS.001-280
There are two sheets of pipelines and instrument flow charts for ammonia solid collection process. All pipe drain valves are DN15 except those specified. All pressure gauge coupling valves are DN6.
The sampling width is D6.
The length of the inlet straight pipe is not less than 150m
This solid is inspected and tested according to the weight of synthetic ammonia. *-60--4 Supply scope of complete equipment (unit): The complete equipment (unit) provided by the manufacturer is shown in the pipeline instrument flow chart with a double-dotted box diagram to indicate the scope of supply of the manufacturer. The equipment position number is indicated in the box diagram, and the pipelines and instrument lines connected to the outside are drawn. If the pipeline and instrument flow chart provided by the manufacturer is used, the drawing number of Guangfang should be indicated. You can also draw its simple appearance (refer to the equipment and machine legend regulations) and its pipelines connected to the outside, and indicate the position number, the pipeline and instrument flow chart of the equipment or unit itself (this flow chart is drawn separately) drawing number.
If the process flow of the complete equipment (unit) is simple, it can be treated as general equipment (machine), but the scope of supply of the manufacturer still needs to be noted. Generally, the pipes, valves, pipe fittings and pipeline accessories supplied with the complete equipment (unit) are marked with words: Seller (the English letter BS can also be added). 3.0.5 Special design requirements:
Some special design requirements can be annotated or illustrated on the pipeline and instrument flow chart. In the design, the equipment (machine), pipeline, valve, pipe fittings and pipeline accessories may have certain special requirements for each other or for themselves. These requirements should be indicated in the corresponding parts of the diagram. These special requirements generally include: (1) Special positioning dimensions
If there are requirements for the relative height difference between equipment, the minimum limit size must be noted, such as: the industry
The liquid seal pipe should indicate its minimum height. When its position is related to the equipment (or pipeline), the required minimum distance should be noted, such as:
When there are requirements for the position of the different diameter pipe, its positioning dimensions should be marked: When the length of the pipe section is required: its length dimension limit must be noted. For example:
When the branch pipe is connected to the main pipe, there are special requirements for the position of the door on the branch pipe. 3. The size should be marked. Relative: Main pipe
Minimum (large)
When the branch pipe is connected to the main pipe, there are requirements for the pipe grade boundary position on the branch pipe. The size and pipe grade should be marked. For example: L2B
For the safety valve inlet pipe When there is a limit on the pressure drop, the length of the pipe section and the number of heads should be indicated near the pipeline, such as: the longest pipe is 3m, and the maximum number of heads is 2.
When there are requirements for the minimum height of the flare and vent pipe, and the lowest point height of the discharge point, they should be marked. (2) Requirements for the length of the straight pipe section before and after the flow orifice. (3) Requirements for the slope and gradient of the pipeline.
(4) Special requirements for the installation position of some valves, pipe fittings or branches: requirements for the use status of some valves and pipe fittings (for example, whether the valve is open or closed under normal operating conditions: whether it is a temporary valve or fitting, etc.), (5) Some other special design requirements.
For these special requirements, words and numbers should be added, and detailed drawings should be provided if necessary. 3.0.6 Notes
In the design When some special requirements and related matters are not suitable for expression or are not clear on the drawing, you can add notes to the drawing and use text, tables, and simple diagrams to explain. For example, the description of the design requirements for high-point venting and low-point discharge: the length requirements of the straight pipe section at the pump inlet; the relevant instructions for the flow-limiting orifice plate, etc. The general notes are added near the drawing label (above or on the left). 4 Content and depth of auxiliary system piping and instrument flow charts 4.0.1 General provisions
Auxiliary system piping and instrument flow charts are generally compiled according to the device (or main item) as a unit and according to different media types. When the process is simple, the piping and instrument flow charts for various media can be drawn on one drawing; if the process is complex and there are many types of media, they should be drawn separately. Whether the piping and instrument flow charts for various media are drawn as a single sheet or multiple sheets, It must be easy to identify and distinguish. The main pipe distribution and branch pipe connection on the diagram must be consistent with the process piping and instrumentation flow chart. 4.0.2 Content and depth
The users (equipment or main item or device) of each auxiliary material on the pipeline and instrumentation flow chart are represented by a box graphic, and the user name, number (or position number), and drawing number are indicated in the box. The pipeline number of the medium pipeline in the process piping and instrumentation flow chart and the pipeline number in this drawing are respectively indicated inside and outside the figure. This content can also be drawn out in a single column table for explanation. The drawing content and depth of the equipment (machine), pipeline, pipe fittings, valves, pipeline accessories, etc. of the auxiliary system shall be compiled according to 3.0.1 and 3.0.2; the corresponding instrument control and analysis sampling shall be compiled according to 3.0.3; and the others shall be compiled according to 3.0.43.0.5 and 3.0.6. The content that has been clearly expressed in the process piping and instrumentation flow chart may not be repeated. 5 Explanation
For engineering projects with simple processes and few equipment, the content of the auxiliary system pipeline instrumentation flow chart can be incorporated into the process piping and instrumentation flow chart. No separate drawing is required.
If the content of the auxiliary system piping and instrumentation flow chart (or one of its contents) is clearly indicated in the pipeline and instrumentation flow charts related to other specialties or main items, it can be no longer drawn. When designing for reuse design according to local conditions, the modified part can be marked with a square frame on the reuse design related drawings, and a modification mark can be added. If necessary, a pipeline and instrumentation flow chart of the modified part can be drawn separately, and the relevant matters of the modification can be noted.
See attached figure
Example Figure 1: Ammonia recovery pipeline and instrument flow chart Example Figure 2: Decarbonization auxiliary system pipeline and instrument flow chart 21
G78532-8
ALA00/40
450702:[2 1 00-138 P12
41.893326.18
Ao/80-25
Aw/looy
V1422_LI8.
VT805-80
015018
N85-25 LID
04·80
CHRA-200
CwS.001-280
There are two sheets of pipelines and instrument flow charts for ammonia solid collection process. All pipe drain valves are DN15 except those specified. All pressure gauge coupling valves are DN6.
The sampling width is D6.
The length of the inlet straight pipe is not less than 150m
This solid is inspected and tested according to the weight of synthetic ammonia. *-60--4 Supply scope of complete equipment (unit): The complete equipment (unit) provided by the manufacturer is shown in the pipeline instrument flow chart with a double-dotted box diagram to indicate the scope of supply of the manufacturer. The equipment position number is indicated in the box diagram, and the pipelines and instrument lines connected to the outside are drawn. If the pipeline and instrument flow chart provided by the manufacturer is used, the drawing number of Guangfang should be indicated. You can also draw its simple appearance (refer to the equipment and machine legend regulations) and its pipelines connected to the outside, and indicate the position number, the pipeline and instrument flow chart of the equipment or unit itself (this flow chart is drawn separately) drawing number.
If the process flow of the complete equipment (unit) is simple, it can be treated as general equipment (machine), but the scope of supply of the manufacturer still needs to be noted. Generally, the pipes, valves, pipe fittings and pipeline accessories supplied with the complete equipment (unit) are marked with words: Seller (the English letter BS can also be added). 3.0.5 Special design requirements:
Some special design requirements can be annotated or illustrated on the pipeline and instrument flow chart. In the design, the equipment (machine), pipeline, valve, pipe fittings and pipeline accessories may have certain special requirements for each other or for themselves. These requirements should be indicated in the corresponding parts of the diagram. These special requirements generally include: (1) Special positioning dimensions
If there are requirements for the relative height difference between equipment, the minimum limit size must be noted, such as: the industry
The liquid seal pipe should indicate its minimum height. When its position is related to the equipment (or pipeline), the required minimum distance should be noted, such as:
When there are requirements for the position of the different diameter pipe, its positioning dimensions should be marked: When the length of the pipe section is required: its length dimension limit must be noted. For example:
When the branch pipe is connected to the main pipe, there are special requirements for the position of the door on the branch pipe. 3. The size should be marked. Relative: Main pipe
Minimum (large)
When the branch pipe is connected to the main pipe, there are requirements for the pipe grade boundary position on the branch pipe. The size and pipe grade should be marked. For example: L2B
For the safety valve inlet pipe When there is a limit on the pressure drop, the length of the pipe section and the number of heads should be indicated near the pipeline, such as: the longest pipe is 3m, and the maximum number of heads is 2.
When there are requirements for the minimum height of the flare and vent pipe, and the lowest point height of the discharge point, they should be marked. (2) Requirements for the length of the straight pipe section before and after the flow orifice. (3) Requirements for the slope and gradient of the pipeline.
(4) Special requirements for the installation position of some valves, pipe fittings or branches: requirements for the use status of some valves and pipe fittings (for example, whether the valve is open or closed under normal operating conditions: whether it is a temporary valve or fitting, etc.), (5) Some other special design requirements.
For these special requirements, words and numbers should be added, and detailed drawings should be provided if necessary. 3.0.6 Notes
In the design When some special requirements and related matters are not suitable for expression or are not clear on the drawing, you can add notes to the drawing and use text, tables, and simple diagrams to explain. For example, the description of the design requirements for high-point venting and low-point discharge: the length requirements of the straight pipe section at the pump inlet; the relevant instructions for the flow-limiting orifice plate, etc. The general notes are added near the drawing label (above or on the left). 4 Content and depth of auxiliary system piping and instrument flow charts 4.0.1 General provisions
Auxiliary system piping and instrument flow charts are generally compiled according to the device (or main item) as a unit and according to different media types. When the process is simple, the piping and instrument flow charts for various media can be drawn on one drawing; if the process is complex and there are many types of media, they should be drawn separately. Whether the piping and instrument flow charts for various media are drawn as a single sheet or multiple sheets, It must be easy to identify and distinguish. The main pipe distribution and branch pipe connection on the diagram must be consistent with the process piping and instrumentation flow chart. 4.0.2 Content and depth
The users (equipment or main item or device) of each auxiliary material on the pipeline and instrumentation flow chart are represented by a box graphic, and the user name, number (or position number), and drawing number are indicated in the box. The pipeline number of the medium pipeline in the process piping and instrumentation flow chart and the pipeline number in this drawing are respectively indicated inside and outside the figure. This content can also be drawn out in a single column table for explanation. The drawing content and depth of the equipment (machine), pipeline, pipe fittings, valves, pipeline accessories, etc. of the auxiliary system shall be compiled according to 3.0.1 and 3.0.2; the corresponding instrument control and analysis sampling shall be compiled according to 3.0.3; and the others shall be compiled according to 3.0.43.0.5 and 3.0.6. The content that has been clearly expressed in the process piping and instrumentation flow chart may not be repeated. 5 Explanation
For engineering projects with simple processes and few equipment, the content of the auxiliary system pipeline instrumentation flow chart can be incorporated into the process piping and instrumentation flow chart. No separate drawing is required.
If the content of the auxiliary system piping and instrumentation flow chart (or one of its contents) is clearly indicated in the pipeline and instrumentation flow charts related to other specialties or main items, it can be no longer drawn. When designing for reuse design according to local conditions, the modified part can be marked with a square frame on the reuse design related drawings, and a modification mark can be added. If necessary, a pipeline and instrumentation flow chart of the modified part can be drawn separately, and the relevant matters of the modification can be noted.
See attached figure
Example Figure 1: Ammonia recovery pipeline and instrument flow chart Example Figure 2: Decarbonization auxiliary system pipeline and instrument flow chart 21
G78532-8
ALA00/40
450702:[2 1 00-138 P12
41.893326.18
Ao/80-25
Aw/looy
V1422_LI8.
VT805-80
015018
N85-25 LID
04·80
CHRA-200
CwS.001-280
There are two sheets of pipelines and instrument flow charts for ammonia solid collection process. All pipe drain valves are DN15 except those specified. All pressure gauge coupling valves are DN6.
The sampling width is D6.
The length of the inlet straight pipe is not less than 150m
This solid is inspected and tested according to the weight of synthetic ammonia. *-60--1 General Provisions
The auxiliary system piping and instrumentation flow chart is generally compiled according to the device (or main item) as a unit and according to the type of medium. When the process is simple, the piping and instrumentation flow charts of various media can be drawn on one diagram; if the process is complex and there are many types of media, they should be drawn separately. Whether the piping and instrumentation flow charts of various media are drawn on a single sheet or multiple sheets, they must be easy to identify and distinguish. The main pipe distribution and branch pipe connection on the diagram must be consistent with the process piping and instrumentation flow chart. 4.0.2 Content and Depth
The users (equipment or main item or device) of each auxiliary material on the piping and instrumentation flow chart are represented by a box graphic, and the user name, number (or position number), and drawing number are indicated in the box. The pipeline number of the medium pipeline in the process piping and instrumentation flow chart and the pipeline number in this drawing are respectively indicated inside and outside the figure. This content can also be introduced in a single column table for explanation. The drawing content and depth of the equipment (machine), pipelines, pipe fittings, valves, pipeline accessories, etc. of the auxiliary system shall be prepared in accordance with 3.0.1 and 3.0.2; the corresponding instrument control and analysis sampling shall be prepared in accordance with 3.0.3; and the others shall be prepared in accordance with 3.0.4, 3.0.5, and 3.0.6. The contents that have been clearly expressed in the process piping and instrumentation flow chart may not be repeated. 5 Notes
For engineering projects with simple processes and few equipment, the contents of the auxiliary system piping and instrumentation flow chart can be incorporated into the process piping and instrumentation flow chart. No separate drawing is required.
If the contents of the auxiliary system piping and instrumentation flow chart (or one of its contents) are clearly expressed in the process piping and instrumentation flow charts related to other specialties or main items, no separate drawing is required. When designing the reuse design according to local conditions, the modified parts can be marked with square boxes on the relevant drawings of the reuse design, and modified marks can be added. If necessary, the pipeline and instrumentation flow chart of the modified parts can be drawn separately, and the relevant matters of the modification can be noted.
See attached figure
Example Figure 1: Ammonia recovery pipeline and instrument flow chart Example Figure 2: Decarbonization auxiliary system pipeline and instrument flow chart 21
G78532-8
ALA00/40
450702:[2 1 00-138 P12
41.893326.18
Ao/80-25
Aw/looy
V1422_LI8.
VT805-80
015018
N85-25 LID
04·80
CHRA-200
CwS.001-280
There are two sheets of pipelines and instrument flow charts for ammonia solid collection process. All pipe drain valves are DN15 except those specified. All pressure gauge coupling valves are DN6.
The sampling width is D6.
The length of the inlet straight pipe is not less than 150m
This solid is inspected and tested according to the weight of synthetic ammonia. *-60--1 General Provisions
The auxiliary system piping and instrumentation flow chart is generally compiled according to the device (or main item) as a unit and according to the type of medium. When the process is simple, the piping and instrumentation flow charts of various media can be drawn on one diagram; if the process is complex and there are many types of media, they should be drawn separately. Whether the piping and instrumentation flow charts of various media are drawn on a single sheet or multiple sheets, they must be easy to identify and distinguish. The main pipe distribution and branch pipe connection on the diagram must be consistent with the process piping and instrumentation flow chart. 4.0.2 Content and Depth
The users (equipment or main item or device) of each auxiliary material on the piping and instrumentation flow chart are represented by a box graphic, and the user name, number (or position number), and drawing number are indicated in the box. The pipeline number of the medium pipeline in the process piping and instrumentation flow chart and the pipeline number in this drawing are respectively indicated inside and outside the figure. This content can also be introduced in a single column table for explanation. The drawing content and depth of the equipment (machine), pipelines, pipe fittings, valves, pipeline accessories, etc. of the auxiliary system shall be prepared in accordance with 3.0.1 and 3.0.2; the corresponding instrument control and analysis sampling shall be prepared in accordance with 3.0.3; and the others shall be prepared in accordance with 3.0.4, 3.0.5, and 3.0.6. The contents that have been clearly expressed in the process piping and instrumentation flow chart may not be repeated. 5 Notes
For engineering projects with simple processes and few equipment, the contents of the auxiliary system piping and instrumentation flow chart can be incorporated into the process piping and instrumentation flow chart. No separate drawing is required.
If the contents of the auxiliary system piping and instrumentation flow chart (or one of its contents) are clearly expressed in the process piping and instrumentation flow charts related to other specialties or main items, no separate drawing is required. When designing the reuse design according to local conditions, the modified parts can be marked with square boxes on the relevant drawings of the reuse design, and modified marks can be added. If necessary, the pipeline and instrumentation flow chart of the modified parts can be drawn separately, and the relevant matters of the modification can be noted.
See attached figure
Example Figure 1: Ammonia recovery pipeline and instrument flow chart Example Figure 2: Decarbonization auxiliary system pipeline and instrument flow chart 21
G78532-8
ALA00/40
450702:[2 1 00-138 P12
41.893326.18
Ao/80-25
Aw/looy
V1422_LI8.
VT805-80
015018
N85-25 LID
04·80
CHRA-200
CwS.001-280
There are two sheets of pipelines and instrument flow charts for ammonia solid collection process. All pipe drain valves are DN15 except those specified. All pressure gauge coupling valves are DN6.
The sampling width is D6.
The length of the inlet straight pipe is not less than 150m
This solid is inspected and tested according to the weight of synthetic ammonia. *-60--
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