This document specifies requirements and gives guidance for conducting a critical review of any type of life cycle assessment (LCA) study and the competencies required for the review. It provides additional requirements and guidance to ISO 14040 and ISO 14044. This document provides: — details of a critical review process, including clarification with regard to ISO 14044; — guidance to deliver the required critical review process, linked to the goal of the LCA and its intended use; — content and deliverables of the critical review process; — guidance to improve the consistency, transparency, efficiency and credibility of the critical review process; — the required competencies for the reviewer(s) (internal, external and panel member); — the required competencies to be represented by the panel as a whole. This document can be applicable to other standards that require independent review of LCA-based procedures and information (e.g. ISO 14045, ISO 14046, ISO 14025
