2) Cranes must either:
• Whenever a crane is erected or re-sited, or any alterations to the anchorages or ballast are made, the anchoring and ballasting must be checked, before the crane is put to work, by applying a load twenty five percent higher than the maximum rated load (an equivalent test. This test must be made so that the maximum pull is applied to the anchorage or ballast).
• The crane cannot be worked safely at its normal safe working load, the crane can still be used if it is sufficiently de-rated and a modified loading diagram is fixed on the crane where it is readily visible to the driver.