AWS D20.1/D20.1M pdf free download
AWS D20.1/D20.1M pdf free download.Fabrication of Metal Components using Additive Manufacturing.
1.2 Units of Measure. This standard makes use of both the U.S. Customary Units and International System of Units (SI). The latter are shown within brackets ([])or in appropriate columns in tables and figures. The measurements may not be exact equivalents; therefore, each system shall be used independently.
1.3 Safety. Safety and health issues and concerns are beyond the scope of this standard; some safety and health information is provided, but such issues are not fully addressed herein. Safety and health information is available from the following sources:
American Welding Society:
(1) ANSI Z49.1, Safety in Vlding, Cutting, and Allied Processes
(2) AWS Safety and Health Fact Sheets
(3) Other safety and health information on the AWS website Material or Equipment Manufacturers:
(1) Safety Data Sheets supplied by materials manufacturers
(2) Operating Manuals supplied by equipment manufacturers Applicable Regulatory Agencies
V*rk performed in accordance with this standard may involve the use of materials that have been deemed hazardous, and may involve operations or equipment that may cause injury or death. This standard does not purport to address all safety and health risks that may be encountered. The user of this standard should establish an appropriate safety program to address such risks as well as to meet applicable regulatory requirements. ANSI Z49.1, Safety in V.Iding, Cutting, and Allied Processes should be considered when developing the safety program.
1.4 ClassificatIon. All components produced in accordance with this standard shall have their classif ication identified in the product definition data set and theAdditive Manufacturing Procedure Specification (AMPS). Component classifications shall be as follows: Class A, Class B, or Class C. These classifications determine the level of qualification and inspection required and the acceptance criteria.
1.4.1 Determining Classifications. The Engineer shall determine the component classification considering material and process aspects that affect functional or systems requirements.
Class A Critical application. A component, whose failure would causc significant danger to personnel, loss of control, loss of a system, loss of a major component, or an operating penalty.
Class B—Semi-critical application. A component whose lailure would reduce the overall strength of the equipment or
system or preclude the intended functioning or use of equipment, but loss of the system or the endangerment of personnel would not occur.
Class C—Noncritica1 application. A component whose thilure would not affect the operation of the system or endanger personnel.
1.5 Responsibilities
1.5.1 Engineer’s Responsibilities. The Engineer shall be responsible for the development of the contract documents that govern components produced under this standard. The Engineer may add to or otherwise modify the requirements of this standard to meet the particular requirements of a specific component. All requirements that modify this standard shall be incorporated into contract documents. The Engineer is responsible for evaluating the applicability and appropriate use of this standard.
The Engineer shall specify in contract documents, as necessary, and as applicable, the following:
(1) Classification -Class A. B. or C (1.4.1)
(2) Component and design requirements (4.1)
(3) Essential process controls (4.1)
(4) Feedstock specification requirements (4.2)
AWS D20.1/D20.1M pdf download.
