Standard No.:	HG/T 20638-1998
English Name:	Specification for details of engineering design of instrumentation
Chinese Name:	自控专业工程设计文件深度的规定
Chinese Classification:	P94    Metal equipment and process pipe installation engineering
Professional Classification:	HG    Professional Standard - Chemistry
ICS Classification:	25.040.40 25.040.40    Industrial process measurement and control 25.040.40
Issued by:	State Bureau of Petroleum and Chemical Industries
Issued on:	1998-6-22
Implemented on:	1999-1-1
Status:	superseded
Superseded by:	HG/T 20638-2017
Superseded on:	2018-1-1
Language:	English
File Format:	PDF
Word Count:	22000 words
Price(USD):	440.0
Delivery:	via email in 1 business day

1.0.1 This specification is hereby prepared with a view to meeting the need of domestic and foreign engineering construction projects and achieving standardization and normalization of engineering design of instrumentation. 1.0.2 This specification is not only applicable to engineering design adopting conventional instrument, but also one adopting DCS. The design document examples attached in this specification are only used for describing the content to be included in the engineering design and the depth to be reached, instead of the recommendation of technical scheme. Each design document has no direct contact and is not displaying a complete engineering design document of instrumentation. 1.0.3 Relevant standards HG/T 20637 "Specification for Preparation of Engineering Design of Instrumentation" HG/T 20639 "Typical Drawing and Standard List for Engineering Design of Instrumentation" During the implementation of this specification, the provisions in the current relevant standards of the nation shall be complied with.

1 General Provisions 2 Composition of Design Document 2.1 Composition of Conventional Instrument Design Documents 2.2 Composition of DCS Design Documents 3 Description for Details of Design Document Content 3.1 Description for Depth of Conventional Instrument Design Document Content 3.2 Description for Details of DCS Design Document Content 3.3 Description for Details of DCS Configuration Documents Appendix A Examples of Conventional Instrument Design Documents A.1 Examples of Table Design Documents A.2 Examples of Drawing Design Documents Appendix B Examples of DCS Design Documents B.1 Examples of Table Design Documents B.2 Examples of Drawing Design Documents