He had shown himself careless of personal safety where the life of his colleagues might be at risk.

他在同事们有生命危险时表现出不顾个人安危之举。

《柯林斯英汉双解大词典》

He went to the rescue of a drowning child regardless of his personal safety.; he ventured his life to save a child from drowning.

他为了抢救落水儿童，把个人安危置之度外。

《新英汉大辞典》

Workers are entitled to criticize, expose to the authorities or bring a lawsuit against the employer if the employer's work conditions may endanger their life safety and health.

劳动者对危害生命安全和身体健康的劳动条件，有权对用人单位提出批评、检举和控告。

youdao

While each sensor has its advantages, life-safety can be affected if the wrong detector is used for specific kinds of fires.

FORBES: A Lesson In Keeping An Elderly Parent Safe In Their Own Home

Older alarm devices and panels are prone to failure and life-safety sensors such as smoke and carbon monoxide detectors must be periodically replaced to work reliably.

FORBES: A Lesson In Keeping An Elderly Parent Safe In Their Own Home

SpaceX is eyeing this business as well, and is developing the critical life-support and safety systems that would turn Dragon into a human-rated vehicle.

BBC: SpaceX lifts off with ISS cargo