noun
safety department; security department
Refers to an organizational unit responsible for safety or security, typically within a company, institution, or public facility.
彼は会社の保安部で働いている。
He works in the company's security department.
保安部に連絡して、不審者を通報した。
I contacted the security department and reported the suspicious person.
Compound of 保安 (safety, security) and 部 (department, division).