R&R

Meaning 1:

Remove & Repair

Meaning 2:

Remove & Replace.

Meaning 3:

Repeatability & Reproducibility

Meaning 4:

Roles and Responsibilities. The "who" for each task in a step is defined. Many people or activities can be defined for each task at the following levels of responsibility: 1) Primary responsibility, 2) Customer, 3) Contributing responsibility, 4) Approval.