§373 キャリアの傾き

The requirements set out in section 6.3.2 are complementary to the requirement set out in section 1.5.15 on the risk of slipping, tripping or falling.

Tilting of the carrier may occur as a result of the position or the movement of the lifting machinery itself or as a result of movements of the carrier on its suspension system or supporting structure. Examples of hazardous situations involving tilting include, for example, an imbalance of hoist operation on suspended work platforms with more than one hoist, or the excessive tilt of a mobile elevating work platform due to movements of the supporting structure or due to internal leakage in hydraulic systems.

The first paragraph of section 6.3.2 does not rule out all tilting of the carrier, but requires the machinery to be designed and constructed to limit tilt to values that do not create a risk of persons falling in, on or from the carrier. The acceptable values depend on the manufacturer's risk assessment. Values are indicated in relevant harmonized standards.

Where excessive tilt cannot be prevented by inherently safe design measures, it may be necessary to fit devices to detect and correct excessive tilt automatically or, failing that, to stop movement of the carrier and warn the operator so that he can take the necessary corrective action before a hazardous situation is created.