This standard specifies the product specifications and performance parameters, technical requirements, acceptance rules and test methods, and requirements for painting, packaging, transportation and storage of cryogenic liquid storage tanks. This standard applies to fixed vacuum powder insulated cryogenic liquid (liquid oxygen, liquid nitrogen, liquid argon and liquid carbon dioxide) storage tanks whose inner containers are made of austenitic stainless steel. Fixed vacuum powder insulated liquid carbon dioxide storage tanks whose inner containers are made of low-alloy steel plates for cryogenic pressure vessels can refer to this standard. JB/T 9072-1999 Fixed Vacuum Powder Insulated Cryogenic Liquid Storage Tanks JB/T9072-1999 Standard download decompression password: www.bzxz.net

JCS 71.100.20
Machinery Industry Standard of the People's Republic of China
JB/T9072—1999
Stationary cryogenie liguid storage tankswithevacuatedpowderinsulatioa1999-07-12 Issued
National Machinery Industry Bureau
2000-01-01 Implementation
JB/T9072—1999
This standard is a revision of ZHJ76003.-88 (fixed vacuum powder insulated cryogenic liquid storage tank). Compared with 2BJ76003.88, this standard has the following major technical changes: "previous specification" has been added.
In the scope of the competition, the specification of "fixed vacuum powder insulated liquid carbon dioxide storage tank made of low-alloy steel plate for cryogenic pressure vessels" has been added. In the second reference standard, "GB3323-87 "Radiography and quality classification of steel fusion welding" has been cancelled and replaced by IB4730-1994 "Non-destructive measurement of carbon dioxide in steel fusion welding". In the third standard, the assessment regulations for the leakage of carbon dioxide have been added. In the fourth standard, the original reference GB3323 in the 4.4 welding inspection standard has been changed to JB4730. Chapter 4 Table 2, the pressure test pressure of the inner container is 1.2P, which is modified to 1.15P. It is consistent with the provisions of Section 3 of the "Technical Supervision and Inspection of Safety Technology for Pressure Vessels".
Chapter 5 adds the assessment provisions for carbon dioxide in the body. 6.3 changes the "delivery technical conditions" to "instructions for use", and adds the provisions of the "pressure test product safety quality inspection certificate".
This standard is implemented in accordance with the regulations, replacing 2BJ76003. This standard is issued by the National Gas Separation and Liquefaction Equipment Standardization Technical Committee and belongs to the Japanese standard drafting unit: Sichuan Air Separation Equipment (Jinyin) Co., Ltd. The main drafters of this standard are: Huang Rentai, Ji Honghua, and this standard was first issued in June 1981.
Machinery Industry Standard of the People's Republic of China
Statlonary Vacuum Powder Insulated Cryogenic Liquid Purchasing Tank Tryogenie liquid storage with evacaated powder insulatign JB/T90T2—1999
Replaces 7.6J76003—88
This standard specifies the product specifications and performance, technical requirements, storage and test methods, packaging, transportation and storage requirements.
This standard is applicable to fixed vacuum insulated evaporator made of stainless steel, liquid oxygen, liquid oxygen and carbon monoxide (CO), and fixed vacuum insulated evaporator made of cryogenic alloy. 2
Cited Standards
The following standards contain provisions that constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, so parties using this standard should discuss the possibility of using the latest version of the following standards: GR 150-.-1998
G 191--1990
GB/T13J06—1991
JB/T2536—1980
Science and Technology Pressurized Pressure Vessels
Packaging, Storage and Transportation Drawings and Markings
Pressure Filter Performance Test Method
JB.T3356.1—19991
JB,4709-[992
JB4730—[994
Welding Procedure for Steel Pressure Vessels
Non-destructive Testing of Pressure Vessels
Technical Supervision Regulations for Safety of Pressure Vessels》
3 Product Specifications and Performance Data
3.1 The specifications and performance data of the purchased products shall comply with the requirements of Table 1. 3.2 The insulation performance shall be checked by pressure rise every 24 hours. The "rise value" is divided into two grades according to the effective volume: <50m3: 35kPa/l, 50--100m3: 20kPad, assessment conditions: internal pressure is 1.6-2.0MPg: ambient temperature is 20, filling and filtering is 1/3-1/2 of the effective volume
National Machinery Industry Kitchen 1999-07-12 approved 2000-01-01 implementation
particle volume
10no0o
1. Guarantee
JB/T9072-1999
Table! Product Specifications
H Evaporation Rate
The maximum value of the yield rate is 20, 0.1M. The filling and reducing ratio is the working pressure of the 13-/2:2 liquid distillation sugar. Technical Requirements
4.1 In addition to being manufactured in accordance with the provisions of this standard and the drawings approved by the prescribed procedures, the storage tank shall also comply with the provisions of the Safety Technical Supervision Regulations for Pressure Vessels [hereinafter referred to as "Container Regulations 3B150, JB4709 4.2 Materials
4.2.1 The materials for manufacturing the sugar storage pressure components must comply with the provisions of "Container Regulations 3". 4.2.2 Insulation material Expanded gypsum (playing sand) should meet the following requirements: 0.1~1.2mm:
Gradient, 30-60kg/m*:
Moisture content: 0.3% (weight ratio);
Soluble matter content (in chlorinated water): 0.3% (weight ratio) 4.3 Cleaning
4.3.! The inner container [including gas and liquid pipelines] system must be degreased and spot checked using the following method: Use a clean dry white rubber to wipe the degreased surface. If there is no oil mark or rust on the paper, it is satisfactory. 4.3.2 The inner container (including gas and liquid pipes) system must be completely cleaned of solid impurities and should be free of welds and debris. JB.T9072—199 9
4.3.3 The grooves of the parts under vacuum system should be cleaned in reverse order, and there should be no oil, iron filings, brand bay, oxidation products or other substances on the surface.
4.4 Welding inspectionwwW.bzxz.Net
4.4.1 The double-joint welds of the inner tank container should be tested by 20% radiographic inspection. When the gas is used as the resistant test, 100% radiographic inspection should be carried out, and the requirements of JB 34730 II grade standard should be met. 4.4.2 The welds of the outer container should be tested by 20% radiographic inspection or ultrasonic inspection: the radiographic inspection should not be lower than JB 4730 grade standard, and the ultrasonic inspection should not be lower than JB 4730 grade standard. The inspection of the weld of the outer container should meet the requirements of the design drawing. 5 Pressure test
4.5.1 The test pressure of the container positive test, airtightness test and air pressure test shall not be lower than the requirements of 2. The upper pressure test data of liquid carbon dioxide shall be determined according to the drawings. Table 2 Pressure test parameters
Design, P
Container test pressure
4.5.2 The pressure test sequence and time shall be carried out according to the requirements of the specification. 4.5.3 The vacuum layer test time shall not be less than 4. Stone leakage rate change
Container gas medical
Vacuum layer
Air pressure test pressure
4.6! The container and the self-study interlayer shall be leak-tested by nitrogen mass spectrometry or static rise method. The static leakage rate shall meet the requirements of the design drawings. The static leakage rate is calculated according to the following formula:
e-(pr-po)
Where: 1—Normal leakage rate, Pa-L/s:
P:-Altitude at the end of static test, PasP—Point vacuum at the beginning of static test, Pa; V—Volume of inner container or layer, L;
1Test time, s
4.6.2 Vacuum during extraction: For the minimum 5m below the effective container, it shall not be less than 1Pa: For the minimum 5~30m, it shall not be less than 3Pa; For the minimum 30m, it shall not be less than 4Pa:
4.? Matching valves, gauges and safety devices 4.7.1 The pressure gauge for safety inspection on the valve, including various doors, must have product quality Qualified or qualified after inspection. *, 7.2 The safety and protective film installed on the equipment shall be manufactured in accordance with the provisions of the "Regulations". 4.8 A nameplate shall be installed in a conspicuous part of the equipment. The content on the nameplate shall not be less than the provisions of the "Regulations". The size of the nameplate shall comply with the provisions of GB/T13306:
49 Under the conditions specified in the product manual, within 1 month from the date of delivery, if the product is damaged due to poor quality (excluding damaged parts), the manufacturer shall replace or repair it free of charge. 3
5 Acceptance rules and test methods
JB.T 9072-1599
5.For tanks with an effective volume less than or equal to 5m3, the evaporation rate test shall be conducted in the production plant or on-site of the user. If there is no extraction unit inside, the total unit shall be tested according to 5 loads. For tanks with an effective volume greater than 5m3, the production plant and the user shall conduct evaporation rate tests on-site. The evaporation rate shall comply with the provisions of Table 1.
5.2 Test method shall be in accordance with the provisions of JB/T3356.1. 5.3 Comprehensive inspection of thermal insulation performance of carbon dioxide storage tanks - pressure rise value\ shall be conducted on-site of the user (unless otherwise specified by the company).
5.4 Other acceptance requirements shall be in accordance with the provisions of GB1S0. 6 Oil, packaging, preparation and preservation ||t t||6.1 The rolling, packaging, transportation inspection and other aspects of the hazardous belt shall comply with the provisions of B2536.6.2 Before the tank is taken out, the inner container and its replacement system shall be filled with 0.02-0.06MPa of dry nitrogen and sealed at positive pressure. 6.3 At least the following technical documents and materials shall be attached when the tank is taken out of the factory: a) Product certification: b) Product quality certificate;
Instructions for use;
d) Long-term product safety and quality supervision inspection certificate: e) List of details:
Process flow, sample (including basic installation dimensions) 6.4 The packaging, storage and transportation diagram shall comply with the provisions of GD191.
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