Q: True or False: a chain with a valid EN 818-2 test certificate can be used bent over a static pin without any reduction in its effective working load limit.

False — bending a chain over a static pin reduces its effective WLL regardless of the certificate EN 818-2 tests chain in linear loading only. Bending over a static pin imparts two-point bending stresses the certificate doesn't account for. On Honeybourne III, the chain supplier confirmed the 5.25:1 pin-to-chain diameter ratio reduced WLL even on new chain, and wear reduced the ratio further over time.

Question 1

True or False: a chain with a valid EN 818-2 test certificate can be used bent over a static pin without any reduction in its effective working load limit.

Accepted Answer

False &mdash; bending a chain over a static pin reduces its effective WLL regardless of the certificate EN 818-2 tests chain in linear loading only. Bending over a static pin imparts two-point bending stresses the certificate doesn't account for. On Honeybourne III, the chain supplier confirmed the 5.25:1 pin-to-chain diameter ratio reduced WLL even on new chain, and wear reduced the ratio further over time.

Question 2

You're asked to test a deck crane grab after electrical repairs nearby. As the grab is hoisted, what should have happened first?

Accepted Answer

The area within the grab's swing radius should be cleared of personnel before the lift On the bulk carrier Fairfield Eagle, a crew member working nearby was struck and fatally injured when a grab being test-lifted after repairs swung unexpectedly. The investigation found the area should have been cleared and barriered before the test lift began.

Question 3

A toolbox talk held before a lifting operation should explicitly cover which of the following?

Accepted Answer

Who must remain clear of the exclusion zone while the lift takes place A toolbox talk exists to make sure everyone present understands the danger zones, the abort signal, and — critically — who must not be in the area while the lift happens. The RMIMA investigation into the Fairfield Eagle fatality found the toolbox talk had not made this clear.