scope:

This Guide outlines the AM process, approval for AM facilities, and approval and certification for AM parts.

i) Section 2:

Design review, if applicable

ii) Sections 3, 4 and 5:

Factors to be considered for the AM process

Note: Factors include essential parameters and non-essential parameters. Essential parameters are to be defined in the specification and are required by ABS. Non-essential parameters need not be defined in the specification and are to be documented by AM facilities.

iii) Section 6:

Requirements for inspection and testing

iv) Section 7:

Requirements for AM facility approval

v) Sections 8 and 9:

Requirements for AM parts approval and certification

Specifications for production, approval for AM facilities, approval and certification for AM parts are to demonstrate at least an equivalent level of safety and integrity to traditionally manufactured parts and materials.

This Guide covers seven subcategorized PBF and DED metal AM processes in accordance with 1/1.1 or equivalent, intended for marine and offshore applications.

Other AM processes, materials, and applications may be submitted for review and will be specially considered by ABS. Some of the qualification and testing principles contained herein may be applicable. Examples of other cases are listed as follows:

i) Binder jetting, materials extrusion, sheet lamination, etc.

ii) Non-metallic materials such as ceramic, composite, plastic

iii) Prototype new design, tooling, fixtures, etc.

Note: AM is an emerging and developing technology for marine and offshore applications. Metal AM parts may cover a wide range of applications and use various designs, materials, and processes. Accordingly, special consideration and case-by-case decisions by ABS may be called out during engineering review and manufacturing survey.

The verbal forms are used to express provisions in this Guide as follows:

i) "is to be" or "are to be" denotes the minimum requirements

ii) "should" denotes a recommendation, which is advised but not required

iii) "may be" is used for permission or option

iv) "can be" is used for possibility or capability