Regarding the naming of device tag numbers

I’m also very curious; our factory names are all just made up arbitrarily

Regulations on the Naming and Numbering of Equipment in Hydropower Plants Chapter 1 General Provisions Article 1 These regulations are formulated to standardize the naming and numbering of equipment in hydropower plants (hereinafter referred to as plants), in accordance with the \"Uniform Numbering Criteria for Certain Equipment in Power Systems\" issued by the former Ministry of Water Resources and Electric Power, as well as the \"**Power Grid Dispatching Regulations\" issued by the **Provincial Electric Power Company. Article 2: The equipment referred to in these provisions denotes all mechanical and electrical equipment within the entire power plant. Article 3 These provisions apply to the naming and numbering of all equipment in power plants. Article 4: All equipment in the power plant shall be uniformly numbered in accordance with the actual equipment drawings after completion, following the principle of combining the official name of the equipment with its identification number. The official name of the equipment usually consists of several Chinese characters, while the identification number is composed of several Arabic digits and symbols. Chapter 2 Management Institutions and Responsibilities Article 5 The power generation operation section is the designated department responsible for equipment naming and numbering. Article 6 The main responsibilities of the department in charge of equipment naming and numbering are as follows: (1) To name and number newly put into operation equipment, and to prepare corresponding signage ； (II) Regular inspection, cleaning, and correction of the markings and signs on on-site equipment ； (III) Responsible for the labeling of on-site equipment, the installation of signs, and routine maintenance. Chapter 3: Equipment Naming Rules Article 7: The name of a main generator or transformer consists of three parts: the \"actual name of the equipment\", the \"serial number of similar equipment\", and the \"first letter of the actual name in Pinyin (in uppercase)\». For example, \"Generator 1F\" refers to Generator No. 1, while \"Transformer 1B\" refers to Main Transformer No. 1. Article 8: The plant-use transformer is composed of two parts: the \"actual equipment name\" and the \"designated equipment number\"; for example, \"Plant-use transformer TS41\" refers to the No. 1 plant-use transformer. Article 9: The near-area transformer is composed of two parts: the “actual name for equipment purpose” and the “designated equipment number”. For example, “TD31 for dam top” refers to the No. 1 dam top transformer. Article 10: The 400V main switch for plant use is composed of three parts: the actual name of the equipment, the voltage level code “1”, and a two-digit circuit breaker number. The two-digit circuit breaker number must be even, starting from 00. For example, “Plant transformer TS41 low-voltage side switch 112” refers to the low-voltage side switch of No. 1 plant transformer, while “Plant transformer TS42 low-voltage side switch 132” refers to the low-voltage side switch of No. 2 plant transformer. Other load switches are composed of the actual name of the equipment and the built-in numbering of the distribution panel. Article 11: The main 400V distribution switch in the near-area is composed of three parts: the “actual name of the equipment’s purpose”, “voltage level code 2”, and “two-digit circuit breaker number”. The “two-digit circuit breaker number” must be an even number, starting from 00. For example, “TD31 low-voltage side switch 202” refers to the low-voltage side switch of Unit 1 at the dam top, while “TD33 low-voltage side switch 212” refers to the low-voltage side switch of Unit 1 at the lock. Other load switches are composed of the “actual name of the equipment’s purpose” and the “built-in numbering of the distribution panel”. Article 12: The outlet switch for a generator is composed of four parts: the “name of the associated unit”, “voltage level code 3”, “unit sequence number”, and “fixed identifier 2”. For example, “Generator 1F outlet switch 312” refers to the outlet switch of Generator #1. Article 13: The 10KV switches for plant use are composed of three parts: “actual name of the equipment”, “voltage level code 3”, and “two-digit circuit breaker number”. The “two-digit circuit breaker number” must be an even number, starting from 00. For example, “Switch 314 on the high-voltage side of Plant Use Transformer TS41” refers to the high-voltage side switch of No. 1 plant use transformer, while “Switch 334 on the high-voltage side of Plant Use Transformer TS42” refers to the high-voltage side switch of No. 2 plant use transformer. The 10KV isolators are composed of two parts: “name of the associated equipment” and “fixed identifier 3”. Article 14: The 220KV switch is composed of three parts: the “name of the subordinate device”, “voltage level code 6”, and the “two-digit circuit breaker number”. The two-digit circuit breaker number must be an even number; for example, “Transformer 1B High-Voltage Side Switch 610” refers to the high-voltage side switch of Main Transformer No. 1. Article 15: The 220KV isolators are composed of two parts: the “name of the associated equipment” and a “fixed identifier”. The isolators on the busbars are identified by the number of the corresponding busbar; the isolator on Busbar Section I is designated as “1”, those on Busbar Section II as “2”, and all others as “3”. For example, “6103” refers to the isolator on the high-voltage side of the No. 1 main transformer, while “6101” refers to the isolator on the busbar side of the 610 switch. Article 16: The numbering of the low-voltage side isolators for 220KV transformers is based on that of the high-voltage side isolators of these transformers; all that is required is to change the voltage level code from “6” to “3”. For example, “Isolator 3103 on the low-voltage side of Transformer 1B” refers to the low-voltage side isolator of the No. 1 main transformer. Article 17: Voltage transformers and arresters are denoted by the format “actual device name” + “voltage level code” + “×” + “subordinate device code” + “fixed identifier 4” + “English abbreviation of the device”. For example, “Voltage Transformer 6×14PT” refers to the voltage transformer on Busbar Section I at 220KV, while “Voltage Transformer and Arrester 3×14PT LA” refers to the voltage transformer and arrester cabinet on Busbar Section I at 10KV. Article 18: The neutral point grounding isolating switch is composed of the \"actual equipment name\" + \"voltage level code\" + \"×\" + \"subordinate equipment code\" + \"fixed identifier 6\". For example, \"Transformer neutral point grounding isolating switch 6×16\" refers to the neutral point grounding isolating switch of Main Transformer No. 1. Article 19: The numbering of the grounding switch is derived from that of the associated isolating switch; that is, “-1” or “-2” is added to the upper right corner of the isolating switch’s number. Chapter 4: Equipment Numbering Rules Article 20: Numbering of Valves in the Drainage System (1) The numbering of valves in the drainage system consists of five characters, which are composed of the “serial number of the subordinate equipment” + the “first uppercase letter of the Chinese pinyin name of the system” + the “serial number of the branch system to which it belongs” + the “serial number within that branch system” + the “valve serial number”. (II) The drainage system is a public system; therefore, the “serial number of affiliated equipment” is uniformly set to “0”, the “first uppercase letter of the system’s name in Pinyin” is “S”, and the “serial numbers of the subordinate subsystems” are “4”, “5”, “7”, and “8”. Among these, “4” refers to the maintenance drainage system, “5” refers to the leakage drainage system, “7” refers to the indoor rainwater drainage system, and “8” refers to the parking lot drainage system. (III) Examples of valve numbers in the drainage system: For instance, 0S411 refers to the outlet valve of Pump No. 1 for maintenance drainage; 0S522 refers to the supply valve for lubricating water of Pump No. 2 for leak drainage; 0S711 refers to the outlet valve of Pump No. 1 for rainwater drainage on the left side of the plant; 0S843 refers to the bypass valve of the solenoid valve for lubricating water of Pump No. 4 in the vehicle return area. Article 21: Valve numbering in the technical water supply system (1) The valve numbering in the technical water supply system consists of five characters, which are composed of the “serial number of the affiliated equipment” + the “first uppercase letter of the Chinese pinyin of the system’s name” + the “serial number of the branch system to which it belongs” + the “serial number within that branch system” + the “valve serial number”. (II) The “Subsidiary Equipment Serial Number” is classified according to the utility and unit serial numbers: “0” for utilities, “S” for the first uppercase letter of the system’s name in Pinyin, and “1”, “2”, “3”, or “6” for the serial number of the respective sub-system. Here, “1” refers to the pipelines associated with the main technical water supply pipe, “2” refers to those associated with the main shaft sealing water supply pipe, “3” refers to those associated with the cleaning water supply pipe, and “6” refers to the fire fighting water supply system. (III) Examples of valve numbers in the drainage system: For instance, 0S111 refers to the inlet valve of the water intake filter in the flow channel of Unit 1; 0S123 refers to the outlet valve of the water intake filter in the flow channel of Unit 3; 0S231 refers to the inlet valve of the pipeline pump No. 3; 0S242 refers to the outlet valve of the pipeline pump No. 4; 9S301 refers to the water supply valve of the expansion tank of Unit 9; 5S633 refers to the rear valve of the fire suppression deluge valve for Main Transformer No. 5. Article 22: Valve numbering for the central air conditioning supply and drainage systems. The valves in the factory’s central air conditioning water system are numbered using a four-character code; the first character is the uppercase initial of the pinyin for “air conditioning”, namely “K”, followed by three digits that are numbered in sequence. Article 23: Valve numbering for high and low pressure gas systems within the plant (1) The valve numbering for high and low pressure gas systems within the plant consists of five characters, which are composed of the “serial number of the associated equipment” + the “first uppercase letter of the Chinese pinyin name of the system” + the “serial number of the sub-system to which it belongs” + the “serial number within that sub-system” + the “valve serial number”. (II) The “Subsidiary Equipment Serial Number” is classified according to the utility and unit serial numbers; where the utility serial number is “0”, the “first uppercase letter of the system’s Chinese pinyin” is “Q”, and the “Serial Number of the Corresponding Subsystem” is “1” or “2” – with “1” denoting the high-pressure gas system and “2” denoting the low-pressure gas system. (III) Examples of valve numbers for the high and low pressure gas systems in the plant: For instance, 0Q111 refers to the outlet valve of the No. 1 high-pressure gas compressor, 0Q251 refers to the inlet valve of the brake air reservoir of the unit, 1Q211 refers to the air supply valve for braking of the No. 1 unit, and 1Q101 refers to the air supply valve for filling the oil sump of the No. 1 unit. Article 24: Valve numbering in the GIS gas system. Valves in the GIS gas system are assigned a four-character code, which consists of the first letter (in uppercase) of the English word for \"air\" + the \"bay number\" + the \"valve number\". Article 25: Valve numbering in the oil system (1) The valve numbering in the oil system consists of five characters, which are composed of the “serial number of the associated equipment” + the “first uppercase letter of the pinyin of the system’s name in Chinese” + the “serial number of the sub-system to which it belongs” + the “valve serial number”. (II) The “Serial number of auxiliary equipment” is classified according to the serial numbers of the utilities and the units; where the value for utilities is “0”, the value corresponding to the first uppercase letter of the system’s name in Pinyin is “Y”, and the serial numbers of the subordinate subsystems are “2” and “3” – with “2” referring to the bearing oil system and “3” referring to the governor oil system. (III) Examples of oil system valve numbers: For instance, 1Y211 refers to the outlet valve of the oil pump for Bearing No. 1 on Unit No. 1, while 1Y300 refers to the main supply valve for the governor of Unit No. 1. Chapter 5: Supervision, Inspection, Rewards, and Punishments Article 26: Work areas and individuals that maintain equipment markings and signs properly will be rewarded in accordance with the Operation Assessment System. Article 27: If the power generation operation unit fails to name and number the equipment in accordance with these rules, or fails to regularly inspect, clean, and rectify the equipment labels and signs, it will be assessed in accordance with the Operation Assessment System. Chapter 6: Feedback Article 28: This system shall be revised and improved in a timely manner based on its implementation and feedback received. It shall generally be reviewed once a year, with a comprehensive revision taking place every three years. Chapter 7 Supplementary Provisions Article 29 The power generation operation area may, in accordance with these provisions, formulate corresponding management regulations for the daily maintenance of markings and signs on all equipment in the plant. Article 30 These provisions shall be interpreted by the Power Plant Safety Production Department. Article 31 These provisions shall come into force as of the date of issuance, and other relevant provisions shall be repealed simultaneously.

Why is gas production generally referred to as “651”? It’s the name used for the medium-nitrogen plant. There is a reason for it.

We all use our own numbering system; you can design it according to the characteristics of your factory, but it must be systematic, with each device having a unique identifier. This requirement is necessary for things like FDA approval. It is also possible to use a format of Chinese characters followed by numbers, but the requirement is that it must be a unique identifier.

Does anyone know how equipment tag numbers are assigned in chemical plants? Give some advice, please

The tag numbers are determined by the design institute, so they can be used directly. Otherwise, it will cause problems in device management.

Reply to 1# iverke003: The device numbering can be referred to in HG 20559.7-1993, which specifies the numbering for devices in pipeline and instrumentation diagrams

Please refer to the following link: http://bbs.hcbbs.com/viewthread.php?tid=6448&highlight=20559