GB 16912-2008Safety technical regulation for oxygen and relative gases produced with cryogenic method (English PDF)

Foreword

This standard 4.2.2,4.2.3,4.3.1,4.3.2,

4.3.3 Chou), 4.6.6,4. 6.12,4.6.13,4.6.17,4.6.18, 4.6.19,4.6.20,4.6.21,4.6.22,4.6.23,4.6.24,4.6.26,4.6.28,4. 6.29,4.6.30,4.7.1,4.7.2, 4.7.3,4.7.4,4.8.6,4.11.2,4.11.3,6.2.1,6.2.2,6.2.5,6. 2.10,6.5.2,6.5.3,6.5.4,6.5.12, 6.6.3,6.6.4,6.7.4,6.9.4,6.12.1,7.1.1,7.2.2,7.3.3,7. 3.14,7.3.16,7.3.20,7.3.23,7.3.24, 9.2.15,9.3.2,9.3.7,9.4.6,9.6.1,9.6.2,9.7.1,9.7.4,9. 7.6,10.3.2,

10.3.7 mandatory, the rest are pushed Recommended nature. This standard from the date of implementation date, instead of GB 16912-1997 "oxygen and gas safety-related technical regulations." The main difference between the standard and the "oxygen and related gas safety technical regulations" of GB 16912-1997 are as follows:

--- The name of the standard was changed to "deep freeze production of oxygen and gas safety-related technical regulations."

--- Chapter 1, the main increase "The order applies to new construction, expansion and renovation of the depth-freezing method to produce oxygen and related gas unit. "

--- Chapter 2 refers to the latest national standards and industry standards, and an increase in the relevant standards. Chapter 3

--- increased 3.22,3.23,3.24,3.25,3.26,3.27.

--- Chapter 4 adds 4.9.5; major revision 4.2.1,4.2.2,4.3.1,4.3.2,4.3.3,4.6 .12,4.6.24,4.6.28, 4.6.29,4.6.31,4.8.5,4.10.1,4.11.2,4.11.3,4.12.1.

--- Chapter 5, an increase of 5.10; major revision 5.1,5.11,5.19.

--- Chapter 6 adds 6.2.4,6.7.8,6.7.9,6.7.11,6.10.1e); major revision 6.1.1,6. 1.2,6.1.3, 6.2.8,6.3.2,6.4.3,6.5.2,6.5.3,6.5.7,6.7.2,6.7.3,6. 7.5,6.7.7.

--- Chapter 7 adds 7.3.15,7.3.24,7.3.25; major revision 7.3.3.

--- Chapter 8 major revision 8.1.2,8.1.3,8.1.6,8.1.9,8.1.10,8.1.14d), 8.2, 8.3,8.4.1,8.4.2, 8.4.4,8.6.

--- Chapter 9 increased 9.1.5,9.4.4,9.4.6; major revision 9.1.2,9.2.5,9.2.10,9.2 .14,9.2.15.

--- Chapter 10 adds 10.2.3j); major amendments to the 10.1.4,10.1.5,10.1.7d), 10.2.2b), 10.2.3a) , 10.3.5.

1 Scope

China's mandatory safety technical regulation for oxygen and related gases produced by the cryogenic method. An air separation unit liquefies air and distils it into oxygen, nitrogen and argon, and it presents two hazards that have destroyed plants. The first is oxygen itself: at high concentration it makes materials burn that do not normally burn at all, including steel, and a trace of oil or grease in an oxygen line ignites spontaneously under pressure - which is why oxygen service demands degreasing to a standard no other gas requires. The second is hydrocarbon accumulation: acetylene and other hydrocarbons drawn in with the air concentrate in the liquid oxygen in the main condenser, and if they reach their solubility limit the result is a detonation inside the coldbox. The regulation covers the design, materials, cleanliness, purge and monitoring that prevent both.

The rules of the industry related to the production of oxygen and gas (including design, manufacture, installation, alteration, repair), storage, distribution and use should be Compliance with safety requirements. The order applies to new construction, expansion and renovation of the use of oxygen and production of associated gas deep freezing unit.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 1527 copper and copper alloy tube drawing

GB/T 3091 low pressure liquid delivery welded steel pipe

GB/T 3323 metal fusion welded joints radiography Noise Standards

GB 3096 Urban Environmental

GB 4053.1 fixed steel ladders Safety Conditions

GB 4053.2 fixed steel inclined ladder safety and technical conditions

GB 4053.3 fixed industrial protective railings Safety Conditions

GB 4053.4 stationary industrial steel platform

GB 4962 use of hydrogen safety technology

GB 7144 cylinders color logo Basic identification colors

GB 7231 industrial piping, identifying symbols and safety identification

GB/T 8163 Seamless steel tubes

GB 8958 hypoxia dangerous job safety rules

3 Terms and Definitions

The following terms and definitions apply to this standard.

3.1 In a certain area, depending on the combination of circumstances has at least oxygen station house, filling pressure of oxygen or oxygen station house station house, outdoor equipment and technology Collectively about other buildings and structures.

3.2 To arrange the preparation of oxygen and other equipment based air separation technology products, including related buildings between the main and auxiliary production.

3.3 Arranged to compress, store and transport oxygen filling and other equipment based air separation technology products, including those relating between the main and auxiliary production building.

3.4 To arrange compressed nitrogen delivery technology based equipment, including buildings associated with major and secondary production.

3.5 To arrange storage, transport oxygen, nitrogen, argon and other gases cryogenic liquid system to a user-based facilities, including inter-related primary and secondary production Building.

3.6 To arrange a rare gas purification and process equipment-based, inter-related buildings including the main and auxiliary production.

3.7 Oxygen plant (stations, workshops) in the argon needed for the production of hydrogen and matching, to arrange water electrolysis hydrogen-based device, including those related to major Between buildings and auxiliary production.

3.8 To arrange delivery of oxygen, nitrogen, argon and other gases to the user bus or cylinder container frame or set of loading-based, which also can be stored for an appropriate number of The amount of cylinders buildings.

3.9 Between oxygen, nitrogen room, storage room airbags, between the tank (district), between the cryogenic liquid storage tank (zone), clean room, compressor room, an oxygen filling station house, bus M, m gasifier operation between valves, air separation plant, the main control room, among rare gases, hydrogen station, nitrogen pressure station.

3.10 Room service, processing room, testing room, variable power distribution between the cylinder test, pump house, water treatment facilities, warehouses, garages and the like.

3.11 Set fractionator, heat exchangers, adsorption, cryogenic liquid pumps and other equipment in a cold box, including various types of valves, meters and other general.

3.12 Carbon dioxide in air and water is frozen in the heat exchanger switched (regenerator) channel surfaces, the next cycle by the reflux of the gas is Frozen carbon dioxide and water to bring out the cleaning process equipment. It includes two stages of freezing and clear.

3.13 Mechanical removal of impurities in the air, water, carbon dioxide and acetylene, a hydrocarbon oil, various types of mechanical filters, adsorbers, scrubbers, Reversible heat exchangers and other devices.

6 Nitrous oxide N2O 0.35 × 10- 6

Note. When the suction inlet air of harmful impurities and excessive levels can not be avoided, they should take appropriate and effective measures molecular sieve adsorption purification before the air separation unit.

4.2.3 Air Separation Unit suction outlet dust content in the air should not exceed 30mg/m3.

4.3 spacing and fire facilities category Workshop built structures fire spacing production categories, fire resistance rating and built structures and other industrial and civil facilities should comply GB 50016 of the relevant provisions.

4.3.1 production workshop built structures production category and the minimum fire rating shall comply with the provisions of Table 2. Table 2 workshop production facilities and the minimum fire rating categories Type the name of the production of the minimum fire rating main produce workshop And set Oxygen, hyperbaric oxygen plant two B Ding Lei two main plant Liquid oxygen systems B two facilities Oxygen regulator valve manifold chamber B two Filling between oxygen (oxygen filling station house), between two bus B Between nitrogen compressor, mesenchymal bottles between three busbar Group E Group E four nitrogen system facilities Argon gas between compressor, mesenchymal bottles, between bus, liquid argon system facilities Group E four Clean room argon (oxygen hydrogenation process) CPI two Production and build hydrogen storage structures CPI two Aid produce workshop Pump house, cooling towers and water treatment facilities Group E four Category D boiler room three Oxygen Factory dedicated Substations two Class C Immersed transformer room - two

Note 1. LOX (liquid nitrogen, liquid argon) system facility comprising. a liquid storage tank, liquid pump, carburetor and valve room.

Note 2. Buildings oxygen, hydrogen, oxygen pressure, the pressure of hydrogen, oxygen bottles, argon bottles should not be used in ceiling.

Note 3. When the oxygen compressor section of the main plant area larger than the present level or fire district area of 5% and the oxygen compressor with a protective wall (cover), its area is greater than the present 20% level or fire district area, the main plant fire risk category B should be fortified.

4.3.2 Each built fire spacing structures and facilities associated with a particular location should not be less than specified in Table 3.

4.3.3 The following fire spacing place the facility are as follows:

a) oxygen (including oxygen) tank fire spacing between adjacent cans should not be less than the radius of the large tank; and hydrogen storage tank should be provided separately Set, when must be adjacent, the fire spacing should not be less than two cans of adjacent larger diameter tank. Spacing of oxygen and nitrogen, argon tank spacing and nitrogen, argon between tanks shall meet the construction and maintenance requirements, and should not be small To 2m. Spacing and liquid oxygen storage tank of liquid nitrogen, liquid argon tank spacing and nitrogen, liquid argon between tanks shall meet the construction and maintenance requirements, does not It should be less than 2m.

b) hydrogen tank fire spacing between adjacent cans should not be less than the radius of the larger cans; fire spacing between the fixed volume of hydrogen storage tanks, Not less than 2/3 of the adjacent cans of larger diameter tank; fire between a fixed volume of hydrogen storage tanks and wet or dry hydrogen tanks between Distance should not be less than the greater of two cans of adjacent tank radius.

c) oxygen regulator valve manifold should set up a separate room or a protective wall (oxygen plant, oxygen regulator valve manifold station should be located outside the main building), its prevention Fire spacing can be determined according to process requirements, but with the fire of oxygen tanks spacing should not be less than 3.5m.

d) oxygen buffers, fire spacing oxygen balloon and oxygen storage plant shall be determined by the process piping and operating conditions.