This regulation applies to the preparation of chemical equipment design documents. In addition to referring to this regulation, the preparation of chemical equipment design documents that have contact with foreign countries may comply with other relevant regulations. HG/T 20668-2000 Chemical Equipment Design Document Preparation Regulations HG/T20668-2000 Standard download decompression password: www.bzxz.net

Industry Standard of the People's Republic of China
HG/T20M668-2000
Specification for Organization of Chemical Eqwipment Design DocunentsPublished
2000 11 - 24
2001 - 06 - 01
State Administration of Petroleum and Chemical Industry
State Administration of Petroleum and Chemical Industry Document
State Administration of Petroleum and Chemical Industry (2000) No. 423
Notice on Approval of 7 Chemical Industry Standards Including Regulations on the Preparation of Chemical Equipment Design DocumentsbzxZ.net
China Chemical Exploration and Design Association:
According to the project plan for the promotion and revision of engineering construction industry standards of our bureau, the revision proposals of 7 chemical industry standards including "Regulations on the Preparation of Chemical Equipment Design Documents" organized by your unit have been approved by our bureau and are now published. The name and number of the standard are: Recommended standard
Standard number
HG/T 20668-2000
HG/T20678-2000
IFG/T20701-200
HG/T20702-2K0
HC/T 20703 .. 2000
HG/T 20704-2000
Mandatory standard
Standard number
HG20660-200
The above standards were issued on June 1, 2001 Effective from the date, standard name
Provisions on the preparation of design documents for chemical equipment
Provisions on the design of lined steel kettles
Provisions on the management of heat exchange end engineering design of containers
Provisions on the management of professional engineering design of special equipment
Provisions on the management of professional engineering design of materials
Provisions on the management of professional engineering design of pumps
Standard name
Classification of toxic hazards and coal stove hazard levels of chemical media in pressure vessels
State Bureau of Petroleum and Chemical Industry
October 24, 1000
China Chemical Exploration and Design Association
Chemical Exploration and Design Association (2000) No. 202
About entrusting the editing, publishing and issuing of chemical industry standards Notice to the National Chemical Engineering Construction Standards Editing Center: The National Petroleum and Chemical Industry Association's Notice on Approving the Preparation of Chemical Equipment Design Documents and Other Chemical Industry Standards (No. 423 of the State Petrochemical Administration (2000)) has approved the 7 chemical industry standards compiled by our association (the approval document is attached). After research, these 7 chemical industry standards are entrusted to your center to be responsible for the compilation, publication and distribution. Attachment: Notice on Approving the Preparation of Chemical Equipment Design Documents and Other Chemical Industry Standards. China Chemical Engineering Exploration and Design Association
December 18, 3000
Industry Standards of the People's Republic of China
Chemical Equipment Design Document Preparation Regulations
Specifications far OrganizaLion of Chemical Engineering Iesign ThocumentsHG/T 2D668 - 2000
Main Editor: China Xiangqiu Chemical Engineering CorporationApproval Department: State Petroleum and Chemical Industry BureauImplementation Date: June 1, 2001
National Chemical Engineering Construction Standard Editing Center (formerly the Engineering Construction Standard Editing Center of the Ministry of Chemical Industry) 2001 Beijing
1 Preparation (Revised) Original Internal
In recent years, many design units have changed from pure design type to engineering contracting type: computers are commonly used in design, and some units have also contracted engineering construction projects alone or jointly with foreign companies. The original standard (CD130A20-86) cannot meet the requirements in terms of content and form. For this reason, the standard is revised on the basis of the original standard code based on many years of implementation experience and the requirements of the new situation.
2 Peak basis for revision
(1) National standard technical drawing and mechanical drawing" (2) Ministry of Construction Engineering Construction Technical Documents Compilation Regulations: (3) National Health and Safety Technology Supervision Bureau Pressure Detector Safety Technical Supervision Regulations" (4) Domestic engineering companies and design units data, including: Sinopec Beijing Petrochemical 1. Engineering Company, Tianchen Chemical Engineering Company, China Huachu Chemical Engineering Company, China Wuhuan Chemical Engineering Company, China Balloon Chemical Engineering Company and other single materials;
(5) Standards and materials of foreign engineering companies: (6) The work experience of the compilation unit in recent years, 3 revisions (training) internal wear
(1] Added the content and expression methods of the "engineering network". So that when we contract engineering projects, especially when contracting state-owned engineering projects, we have the same expression methods as foreign engineering projects, (2) Added pressure capacity Design qualification approval stamp and stamp column are required. The pressure vessel design qualification of the unit is indicated in a prominent position.
3] A new position for indicating the qualification level of the design unit of the Ministry of Construction is added, and the design qualification level of the unit is indicated in a prominent position in the figure.
(4) The technical characteristics table in the original standard is changed to a design data table: and it is clearly stipulated as a table indicating design data and general technical requirements!
[5] The selection table in the original standard is cancelled, because it is very convenient to modify and copy the drawings after computer drawing, and it is not necessary to use the original old drawings. The signatures of the professional meeting in the selection table must be replaced by the new signatures. 6) Change the "importance" of equipment to "quality" and set up an equipment column. The equipment quantity is an important data for equipment ordering, civil engineering equipment, etc. This time, a special equipment quality column is set up and concentrated, and it is placed in the same prominent position as the stamp column. 【7】Add a new pipe nozzle parts detail column. Pipe parts, especially the pipe nozzle parts of tower equipment, are numerous, and the pipe nozzle size is often changed during design. When one size is modified, it will cause a series of changes in the detail column and drawing. The modification work is large and easy to cause errors. In order to simplify the modification work, all pipe nozzle parts are included in the assembly drawing as a component and exist as a separate component drawing. When the pipe nozzle size or signature is modified, it is only necessary to modify it in the detail column of this component drawing. This greatly simplifies the modification work and reduces the errors caused by the statistical summary of pipe nozzle parts. At the same time, it reduces the length of the detail column of the assembly drawing and facilitates the layout of the drawing.
(8) The signature column in the title is cancelled (sign in the signature column). This is the practice adopted by most international engineering official letters.
(9) Add a new signature to eliminate the original modification table, and its function is replaced by the main signature column. ([) About font size: Since the size of the same font in the printer is not exactly the same in the output of the microcomputer, the size in the GB/T14691-93 standard is expressed in mm instead of the font size in the microcomputer.
b, About English letters: In CD130A20-86 (the original standard number of this standard), some symbols are expressed in English letters. This compilation still adopts the Latin font of the English font, which is B to lowercase straight (see GR/T14691-93, page 78). Font size system: In CB/T14691-93, it is specified as 1.82.5.3.5, 5, 71014, 20mm. This regulation adds 2, 3, 4, and the width is h/.12 (h is the font size). d. In the layout drawings, the scale font under the figure symbol is specified in the specification of 141G4, 1-4: its scale font is consistent with the large figure code and view symbol. This regulation stipulates that the large figure code and view symbol are in 5-point font, while the scale font is 3.No. 5: [11] The content and expression form of drawings, calculation books and other technical documents are also clearly stipulated. (12) Regarding the division and writing format of technical documents. Different standards have different regulations. This regulation selects a simpler expression method. The document hierarchy is stipulated to be six layers. When this number of layers is exceeded, the designer should reduce the document hierarchy to no more than six.
[13) Regarding the simplified drawing method, this regulation retains the original content and adds some new content. When drawing the line drawing, it is necessary to clearly show the specific structure in the existing parts drawing, component drawing, view, partial enlargement drawing, etc. Some figures in the assembly drawing can be simplified to a single line diagram (bold line) on the premise that the external dimensions are proportional. 14) For ease of use, the various assembly sizes and symbol font sizes in the text are consistent with actual use, and the practical drawings of engineering drawings and construction drawings are compiled.
The unit of this regulation: China Chemical Engineering Co., Ltd. Drawings and tables: Guo Guanghong
: Xue Tijun
Review: Shi Lan
Approval: Xu Zhiyuan
Follow the standards
Classification and description of design documents
Classification of design documents
Description of various design documents
Formation of design documents
Width and format of drawings
Ratio of grid
Text, symbols, codes and their sizes
Conform to the standards Number
How to draw a drawing
Comply with the standard
Principles for selecting drawings
Principles for not drawing figures separately
Principles for drawing components separately
How to draw engineering drawings
Simplified drawing of drawings
How to draw special tools
How to mark words, symbols, and codes
Marking of text
Marking of numbers
Marking of proportions
Marking of enlarged drawings
How to use drawing symbols Note·
Marking of pipe opening symbols
Surface material seat symbols, codes and their markings
-(3)
(10)
·[10]
(8) Marking of detailed seam symbols
(9) Marking of operating and changing efficiency fasteners
Marking of work numbers
Marking of dimensions…
Design data sheet (for engineering drawings)
Design data sheet (for assembly drawings)
Equipment estimated mass, load table (for construction drawings) Material list (for engineering)
Adopted standards (for engineering drawings)
Technical requirements (for engineering drawings)
Details column
Input and sub-column of details column 1
Fill in details column 2,
Fill in details column 3
Parts details
Quality and authorship (for assembly drawings)
Specifications column
Main planner
Meeting requirements
Drawing signature column
General for standard drawings Signature
Title bar
Content, format and size, font size
Title 1
Title 2
Title bar 3
Title bar 4
Title bar 1.2,3 are all written
（19)
（24)
，(27)
·(27)
·(32)
·{42)
-:-(44)
（3）Fill in the title bar||t t||Technical requirements
(1)Content format
Fill in the content
Drawing
Arrangement of the sample on the drawing
Arrangement of the same part network
Section view, arrangement of the actual drawing
&Arrangement of the assembly drawing and the parts drawing
Components and their other parts drawings...
(5)Arrangement of the parts of the equipment
Arrangement of the parts of an assembly drawing on several drawings
.T Engineering diagram
Assembly drawing
Component use
Component drawing
Special tool factors
Pre-drop parts drawing
Ladder platform drawing
Standard drawing
Technical parts
Special technical requirements and instructions
Modification of design documents
Appendix A
Revision period
Option
Book and format of technical documents
Simplified drawing method of drawings
(44)| |tt||.·(45)
·(45)
（45)
--(45)
·(46)
-（48)
·(48)
（50)
Appendix C Equipment Design F Document Classification Method
Figure 2.2.1-1 (Engineering Drawing Example)
Figure 2.2.2-1 (Construction Drawing Example—)
Figure 2.2.2-2 Construction Drawing Example 2
Figure 2.2. 2-3 (Implementation of T drawings)
Figure 4.1.3-1 (Legend of the previous engineering drawing)
Figure 4.1.3-2 (Legend of the construction drawing)
【8si
（93)
1.1 Scope
This regulation is applicable to the preparation of design documents for chemical equipment (hereinafter referred to as "design documents". The preparation of design documents for chemical equipment that has contact with foreign countries may comply with other relevant regulations in addition to the relevant technical regulations. 1.2 Compliance with standards
The preparation of design documents shall comply with the latest version of the relevant national standards and relevant industry standards. 2 1. 1
2: Classification and description of design documents
By design stage: Basic design
-Detailed design
By purpose: Engineering drawing
-Engineering drawing
(same as detailed design)
By purpose and nature: Classification of design deliverables
Inquiry version: Based on design, for approval and inquiry, order version
Manufacturing version
Technical File
Assembly circle
Component drawing
Signature drawing (including table drawing)
Component drawing
Special tool drawing
Standard drawing or general drawing
Ladder platform drawing
Pre-welded parts drawing
One pipe opening orientation drawing
Technical requirements
-Calculation book
Instruction manual
Drawing catalogue
Original drawing and source excerpt
Copy drawing3 are all written
（19）
（24）
，(27)
·(27)
·(32)
·{42)
-:-(44)
（3）Fill in the title bar
Technical requirements
(1)Change the format of the content
Fill in the content
Drawing
The original arrangement of the sample on the drawing||tt ||Arrangement of the same part network
Section view, arrangement of the actual drawing
&Arrangement of the matching drawing and the parts drawing
Components and their accessories drawings...
(5) Arrangement of the parts of an assembly drawing
All drawings are divided into several drawings. The arrangement of each part is not necessarily divided. Schematic diagram
Assembly drawing
Component use
Component drawing
Special tools Because·
Pre-drop parts drawing
Ladder platform drawing·
Standard drawing
Technical parts
Special technical requirements and instructions
Modification of design documents
Appendix A
Revision period
Option
Book and format of technical documents
Simplified drawing method of drawings
(44)
.·(45)
·(4 5)
（45)
--(45)
·(46)
-（48)
·(48)
（50)
Appendix C Equipment Design F Document Classification Method
Figure 2.2.1-1 (Engineering Drawing Example)
Figure 2.2.2-1 (Construction Drawing Example—)
Figure 2.2.2-2 Construction Drawing Example 2
Figure 2.2. 2-3 (Implementation of T drawings)
Figure 4.1.3-1 (Legend of the previous engineering drawing)
Figure 4.1.3-2 (Legend of the construction drawing)
【8si
（93)
1.1 Scope
This regulation is applicable to the preparation of design documents for chemical equipment (hereinafter referred to as "design documents". The preparation of design documents for chemical equipment that has contact with foreign countries may comply with other relevant regulations in addition to the relevant technical regulations. 1.2 Compliance with standards
The preparation of design documents shall comply with the latest version of the relevant national standards and relevant industry standards. 2 1. 1
2: Classification and description of design documents
By design stage: Basic design
-Detailed design
By purpose: Engineering drawing
-Engineering drawing
(same as detailed design)
By purpose and nature: Classification of design deliverables
Inquiry version: Based on design, for approval and inquiry, order version
Manufacturing version
Technical File
Assembly circle
Component drawing
Signature drawing (including table drawing)
Component drawing
Special tool drawing
Standard drawing or general drawing
Ladder platform drawing
Pre-welded parts drawing
One pipe opening orientation drawing
Technical requirements
-Calculation book
Instruction manual
Drawing catalogue
Original drawing and source excerpt
Copy drawing3 are all written
（19）
（24）
，(27)
·(27)
·(32)
·{42)
-:-(44)
（3）Fill in the title bar
Technical requirements
(1)Change the format of the content
Fill in the content
Drawing
The original arrangement of the sample on the drawing||tt ||Arrangement of the same part network
Section view, arrangement of the actual drawing
&Arrangement of the matching drawing and the parts drawing
Components and their accessories drawings...
(5) Arrangement of the parts of an assembly drawing
All drawings are divided into several drawings. The arrangement of each part is not necessarily divided. Schematic diagram
Assembly drawing
Component use
Component drawing
Special tools Because·
Pre-drop parts drawing
Ladder platform drawing·
Standard drawing
Technical parts
Special technical requirements and instructions
Modification of design documents
Appendix A
Revision period
Option
Book and format of technical documents
Simplified drawing method of drawings
(44)
.·(45)
·(4 5)
（45)
--(45)
·(46)
-（48)
·(48)
（50)
Appendix C Equipment Design F Document Classification Method
Figure 2.2.1-1 (Engineering Drawing Example)
Figure 2.2.2-1 (Construction Drawing Example—)
Figure 2.2.2-2 Construction Drawing Example 2
Figure 2.2. 2-3 (Implementation of T drawings)
Figure 4.1.3-1 (Legend of the previous engineering drawing)
Figure 4.1.3-2 (Legend of the construction drawing)
【8si
（93)
1.1 Scope
This regulation is applicable to the preparation of design documents for chemical equipment (hereinafter referred to as "design documents". The preparation of design documents for chemical equipment that has contact with foreign countries may comply with other relevant regulations in addition to the relevant technical regulations. 1.2 Compliance with standards
The preparation of design documents shall comply with the latest version of the relevant national standards and relevant industry standards. 2 1. 1
2: Classification and description of design documents
By design stage: Basic design
-Detailed design
By purpose: Engineering drawing
-Engineering drawing
(same as detailed design)
By purpose and nature: Classification of design deliverables
Inquiry version: Based on design, for approval and inquiry, order version
Manufacturing version
Technical File
Assembly circle
Component drawing
Signature drawing (including table drawing)
Component drawing
Special tool drawing
Standard drawing or general drawing
Ladder platform drawing
Pre-welded parts drawing
One pipe opening orientation drawing
Technical requirements
-Calculation book
Instruction manual
Drawing catalogue
Original drawing and source excerpt
Copy drawing
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