JB/T 53146-1999
Vacuum Multilayer Insulated Cryogenic Liquid Vessel - Product Quality Grading (Internal Use)
真空多层绝热低温液体容器 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品质量等级 → 4 试验方法 → 5 抽样、评定方法 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test Methods → 5 Sampling and Evaluation Methods
Scope
This standard specifies the product quality grades, test methods, and sampling and evaluation methods for vacuum multilayer insulated cryogenic liquid vessels. This standard applies to the product quality grading of vacuum multilayer insulated cryogenic liquid vessels with working pressure 0.196~1.4 MPa, storing media such as liquid oxygen, liquid nitrogen, or liquid argon. This standard does not apply to "pressurized liquid nitrogen containers" used in conjunction with liquid nitrogen biological containers.
本标准规定了真空多层绝热低温液体容器产品质量等级、试验方法和抽样评定方法。 本标准适用于工作压力0.196~1.4MPa，贮存介质为液氧或液氮、液氩的真空多层绝热低温液体容器产品质量分等。 本标准不适用于与液氮生物容器配套的“增压液氮容器”。
Normative References
Keywords
Application Summary AI generated
Manufacturers use this standard to classify the quality grades of vacuum multilayer insulated cryogenic liquid vessels, ensuring products meet qualified, first-class, or premium levels. Inspectors and users rely on it to evaluate evaporation rates, safety performance, and appearance quality. This standard is crucial for ensuring the safety and reliability of cryogenic liquid storage equipment.
该标准由制造企业用于对真空多层绝热低温液体容器进行质量等级划分，确保产品符合合格品、一等品或优等品的要求。质检人员和用户可依据本标准评估容器的蒸发率、安全性能及外观质量。它对于保障低温液体储存设备的安全性和可靠性具有重要意义。
AI Summary AI generated
This standard JB/T 53146-1999 specifies product quality grading requirements for vacuum multilayer insulated cryogenic liquid vessels, applicable to vessels with working pressure 0.196~1.4 MPa storing liquid oxygen, liquid nitrogen, or liquid argon. It classifies products into three grades: qualified, first-class, and premium. Assessment indicators include static evaporation rate, service life, pressure test pressure, leak tightness, safety valve reliability, and appearance quality. Test methods reference relevant standards, and sampling requires at least two units that have passed factory inspection. This standard is for internal use and replaces the previous version JB/T 53146-94.
本标准JB/T 53146-1999规定了真空多层绝热低温液体容器的产品质量分等要求，适用于工作压力0.196~1.4MPa、贮存液氧、液氮或液氩的容器。标准将产品分为合格品、一等品和优等品三个等级，考核指标包括静态蒸发率、使用周期、耐压试验压力、气密性、安全阀可靠性和外观质量等。试验方法引用相关标准，抽样评定要求产品经自检合格，一般不少于两台。该标准为内部使用，替代了旧版JB/T 53146-94。
Key Sentences extracted from text
本标准规定了真空多层绝热低温液体容器产品质量等级、试验方法和抽样评定方法。
产品按其质量水平和使用价值分为合格品、一等品和优等品三个等级。
判定产品质量等级必须符合该等级全部考核项目的分等指标，按达到的最低一项指标定等级。
安全阀可靠性测试方法按GB/T 12242的规定。
抽样产品一般不少于两台，任抽一台。
This standard specifies the product quality grades, test methods, and sampling and evaluation methods for vacuum multilayer insulated cryogenic liquid vessels.
Products are divided into three grades: qualified, first-class, and premium, based on their quality level and use value.
The determination of product quality grade must meet all the grading indicators of that grade, and the grade is determined by the lowest indicator achieved.
The safety valve reliability test method shall be in accordance with GB/T 12242.
Sampling products generally shall be no less than two units, and one unit shall be randomly selected.
Standard Timeline
Changes from replaced version:
- 取消JB/T 53146—94 中3.1、3.2 和3.3 的规定
- 第3 章表1 增加了容积为1000L、2000L、3000L、5000L 和10000L 蒸发率分等指标
- 第4 章增加了“安全阀的测试方法按GB/T 12242 的规定”
- 取消“附录A”并修改为“5 抽样、评定方法”
- 第3 章表2 耐压试验压力，将气压1.20p 修改为1.15p
- Canceled the provisions of 3.1, 3.2 and 3.3 in JB/T 53146—94
- Added evaporation rate grading indicators for volumes 1000L, 2000L, 3000L, 5000L and 10000L in Table 1 of Chapter 3
- Added 'Safety valve test method shall be in accordance with GB/T 12242' in Chapter 4
- Canceled 'Appendix A' and revised it to '5 Sampling and Evaluation Methods'
- In Table 2 of Chapter 3, changed the pneumatic test pressure from 1.20p to 1.15p