Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM B349/B349M-16(2021)
• Năm ban hành / Publication date: 2021
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Specification for Zirconium Sponge and Other Forms of Virgin Metal for Nuclear Application
• Chỉ số phân loại Quốc tế (ICS) / By field: 27.120.99 - Các tiêu chuẩn khác có liên quan đến năng lượng hạt nhân; 77.120.99 - Kim loại không có sắt và các hợp kim khác; 77.150.99 - Sản phẩm kim loại khác không có sắt
• Số trang / Page: 3

Phạm vi áp dụng / Scope of standard

1.1 This specification covers one grade of virgin zirconium metal commonly designated as sponge because of its porous, sponge-like texture, but it may also take other forms such as chunklets, suitable for use in nuclear applications.

1.2 Unless a single unit is used, for example corrosion mass gain in mg/dm², the values stated in either inch-pound or SI units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore each system must be used independently of the other. SI values cannot be mixed with inch-pound values.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.