The work equipment must be of adequate strength, of suitable material and be designed to withstand expected loads, without such loads leading to changes that can entail a risk of harm to life or health.If there is a risk that the condition of the work equipment can change so that a risk of harm to life or health arises, it must be effectively secured against this. If necessary, the work equipment shall be provided with appropriate warning devices.Work equipment used in extreme environments or under extreme operating conditions shall be provided with devices that ensure that it works without entailing a risk of harm to life or health.