本手册在GPR 7120.4中描述的持续风险管理过程中，为GSFC所有学科领域的风险评估提供了统一的方法。本文件也可用于支持其他风险管理计划和程序下的项目，在这种情况下，规模、可能性和后果定义可能不同于GPR 7120.4中的定义。本文件不取代组织或项目/计划对当地风险管理流程的使用。使用统一的风险评估方法的目的是，用于估计风险的可能性和后果等级一致地来自一个共同的参考。通常得出的基础等级能够持续比较风险，为工程师和管理人员提供更可靠的方案、安全和技术决策评估。

This handbook provides a uniform approach for performing risk assessments across all discipline areas at GSFC, within the context of the continuous risk management process described in GPR 7120.4. This document may also be used to support projects under other risk management plans and procedures, and in such cases, the scales and likelihood and consequence definitions may differ from those in GPR 7120.4. This document does not supersede organizational or project/program usage of local risk management processes. The purpose of using a uniform risk assessment approach is that likelihood and consequence ranks used to estimate risks are derived consistently from a common reference. Commonly-derived basis ranks enable comparing risks consistently to provide engineers and managers more credible assessments for programmatic, safety, and technical decisions.