Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
AASHTO R 21:1996
Năm ban hành 1996
Publication date
Tình trạng
A - Còn hiệu lực
Status |
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Tên tiếng Anh
Title in English Standard Practice for Drilling for Subsurface Investigations-Unexpectedly Encountering Suspected Hazardous Material
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Thay thế cho
Replace AASHTO R21:1996
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Số trang
Page 4
Giá:
Price Liên hệ / Contact us
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Phạm vi áp dụng
Scope of standard This practice is intended to help protect drillers in the event they unexpectedly encounter suspected hazardous materials while performing subsurface investigations. This is accomplished by training the drillers, identifying precautions to minimize risks of contamination, and establishing a procedure to follow if suspected hazardous material is encountered.1 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this procedure to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 1AASHTO Hazardous Waste Guide for Project Development, February 1990. |