What are the four stages of risk classification control?

The four stages of risk classification control include hazard identification, hazard classification, risk control and effect verification and update.

This system is formulated in order to identify the hazards in the company's production activities, evaluate their risks, establish a hierarchical control mechanism for different levels of risks, and effectively prevent and reduce various accidents.

Risk refers to the combination of the possibility and severity of production safety accidents or health damage events. Possibility refers to the probability of an accident (event). Severity refers to the severity of personal injury and economic loss in the event of an accident (incident).

Hazard source refers to the position, area, place, space, post, equipment and its location in the system that has the potential danger of releasing energy and substances, can cause personal injury and can be transformed into accidents under the action of certain triggering factors. Its essence is the source point or location with potential danger, the source of accidents and the core of energy and dangerous substances concentration.

Hazard sources are generally divided into the first category and the second category. The first category is the energy or dangerous substances that may be accidentally released in the system, and the second category is all kinds of unsafe factors that lead to the failure or destruction of energy constraints and restrictions.

The basic principle of risk classification management and control is to divide the security risk levels into four levels from high to low, and deal with them according to their respective levels:

Grade A: major risk, red risk, assessed as unacceptable risk. Control documents must be established and controlled by enterprises. It must be rectified immediately, and the operation cannot be continued. Only by reducing the risk of registration can you start or continue to work.

Grade B: high risk/orange risk, assessed as high risk. It is necessary to establish control files and formulate control management measures, which shall be controlled by the safety authorities and functional departments of the enterprise according to their respective responsibilities.

Grade C: general risk/yellow risk, assessed as high risk. The workshop is responsible for control, and the safety management department of the company (factory) is responsible for supervision and implementation.

Grade D: low risk/blue risk, assessed as mild allowable. The team is responsible for the control, and the workshop is responsible for supervising the implementation.