IEC 60965:2016规定了对辅助控制室的要求，以使核电站的操作人员能够关闭以前运行的反应堆，并在由于主控制室或其设施不可用而无法再从主控制室行使安全功能的情况下将核电站保持在安全关闭状态。设计必须确保辅助控制室免受危险，包括任何局部极端危险，导致主控制室不可用。与上一版相比，此新版本包括以下重大技术变更: -与辅助控制室（SCR）的定期测试相关的要求； -评估反应堆安全但无人值守的可用时间的要求，以便从主控制室（MCR）移动到SCR并使SCR投入运行； -考虑到原子能机构提出的新要求。

IEC 60965:2016 establishes requirements for the Supplementary Control Room provided to enable the operating staff of nuclear power plants to shut down the reactor, where previously operating, and maintain the plant in a safe shut-down state in the event that control of the safety functions can no longer be exercised from the Main Control Room, due to unavailability of the Main Control Room or its facilities. The design has to ensure that the Supplementary Control Room is protected against the hazards, including any localised extreme hazards, leading to the unavailability of the Main Control Room. This new edition includes the following significant technical changes with respect to the previous edition:
- requirements associated with regular testing of the supplementary control room (SCR);
- requirements to assess the time available during which the reactor will be safe but unattended, in order to move from the main control room (MCR) to the SCR and for the SCR to become operational;
- taking into account new requirements laid down by the IAEA.