March 2020: Crane block design update on IHI and IHI-WMMP deck cranes
This safety update applies to any ship with an IHI or IHI-WMMP deck crane.
This safety update is for
- stevedores in New Zealand ports
- ships’ agents, charterers and ship operators
- Classification Society surveyors
- competent persons (as defined in Maritime Rules Part 49: Ships Lifting Appliances)
- Maritime NZ Maritime Officers
- port companies
IHI and IHI-WMMP deck crane 30 tonne cargo blocks
IHI Corporation has produced updated guidance that recommends modifications to IHI and IHI-WMMP 30 tonne deck cranes. IHI’s guidance is attached below.
The crane block design in IHI’s guidance is not the only acceptable design. Classification societies may also accept alternative crane block designs.
No independent evidence has been presented to support these views, and there may well be other factors involved in the failures. While Maritime New Zealand (MNZ) is providing a copy of IHI’s guidance to highlight safety issues with the cranes, MNZ is not in a position to endorse IHI’s views as regards the mode of failure.
IHI Corporation’s guidance on deck crane 30 tonne cargo block design:
What you should do
Ship operators should contact IHI Corporation to discuss reinforcement or replacement of your crane blocks. IHI can be contacted through their website www.ihi.co.jp/en/.
Original source content - This safety update replaces safety update 33: Crane Block Failures on IHI and IHI-WMMP Deck Cranes.
Contact us for more help
If you have any questions about this safety bulletin, please contact our Wellington office.
New Zealand (toll free):
0508 225 522
Calling from outside New Zealand:
+64 4 473 0111
Tell us what you need help with and remember to include your contact details (email address and phone numbers).