Construction Health and Safety Technician (CHST) 2025 – 400 Free Practice Questions to Pass the Exam

A confined space is typically defined by certain characteristics that can pose risks to workers. One key feature of a confined space is that it has limited means of entry and exit, which can complicate rescue efforts in emergencies. Additionally, a confined space needs to be large enough for a person to enter and perform work but not necessarily conducive to continuous ventilation.

The presence of hazardous atmospheres is another critical characteristic of confined spaces, as these environments often contain toxic gases, low oxygen levels, or flammable materials.

The characteristic identified as not typical of a confined space is the presence of a continuous air supply. In many confined spaces, ventilation is limited or may be inadequate, leading to conditions where air quality can significantly deteriorate. Therefore, the idea of a continuous air supply does not align with the general conditions that classify a space as confined, making it the correct response to the question.