This is the 4256th most frequent Japanese word.
保安
Security; safety.
Here, the word "保安" refers to the measures and systems in place to ensure the protection and stability of a facility during its operation.
保安は施設の運営に不可欠なものです。
Security is essential for the operation of the facility.
In this example, the word "保安" is used to describe the role and responsibilities of personnel in charge of security and management activities.
その保安担当者は入り口で身分証明書を確認します。
The security officer checks identification at the entrance.
Here, "保安" modifies "灯" (light), denoting that the light's purpose is tied to security or safety, providing illumination during emergency situations.