1.1 本标准实践提供了一种基于科学的方法，用于评估涉及生物质能源或化学品的选项的相对可持续性。选项可能涉及产品、过程或项目。 1.2 该方法包括设定目标和目的，确定利益相关者，选择适当的指标，以及评估生物质至少有一个选项可用的选项的相对可持续性。 1.3 目标是促进公平比较方案，将工作重点放在反映利益相关者优先事项的实际指标上，并支持持续改进以实现更可持续的结果。 1.4 本标准实践的目的不是宣布某事物是可持续的或不可持续的，而是帮助用户根据特定的目标和目的评估、比较和排序选项。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This standard practice provides a science-based methodology for evaluating the relative sustainability of options involving energy or chemicals derived from biomass. Options may involve products, processes, or projects. 1.2 The methodology includes setting goals and objectives, identifying stakeholders, selecting appropriate indicators, and evaluating the relative sustainability of options where at least one option is available from biomass. 1.3 The objectives are to facilitate fair comparison of options, focus efforts on practical indicators reflecting stakeholder priorities, and support continual improvement for more sustainable outcomes. 1.4 The purpose of this standard practice is not to declare something as sustainable or not sustainable but to help users assess, compare, and rank options based on specific goals and objectives. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.