SPHL Recovery Checklist

It is recognized that the requirements for lifting of personnel are more stringent than those for the lifting of equipment. The below checklist provides some guidance as to things to review when selecting a system for the recovery of SPHLs:

Lifting Appliance Design

Design Report/Certificate detailing design load of the system, which should be third party verified (ie. by Classification Society or similar).

IMCA LR 006, M187. A3-2, “The crane used in the lifting of personnel should be certified for man riding”.

Applied loads related to wind, heel and trim should be detailed.

System should be designed for fail-safe operations with consideration given to:

Failure of single hydraulic cylinder
Failure of HPU
Failure of power supply

Lifting Analysis

A Lifting Analysis should be completed in order to validate the appropriateness of the design load.

Such analysis should be conducted based upon:

The vessel and SPHL hydrodynamic details
The lifting method, including location of crane tip
Relevant sea state parameters and time domains
Worst case vessel and SPHL headings

Lifting Appliance Manufacture

Manufacturing Survey Certificate, which should be third party verified (ie. by Classification Society or similar).

This should confirm manufacture was completed in accordance with the design.

Including material records, welder records and qualifications, weld procedure records, including charpy v-notch and factory load testing.

IMCA LR 006, M187. A3-2, “The crane used in the lifting of personnel should be certified for man riding”.

Interfacing

Interface documentation, which should be third party verified (ie. by Classification Society or similar), relating to interface of the lifting appliance with the vessel.

Should include:

Stability assessment
Structural assessment
Survey of actual interface materials and workmanship
Batch certificates for structural fasteners (ie. bolts)
Certificate for torque tool used to secure bolts
Cross check against torques detailed in design report

Procedures / Task Plans

Procedures /task plans should be provided for recovery, including detailed risk assessment/risk management treatments.

Ensure risks such as:

SPHL rigging connection to hook are evaluated and treated
Collision with vessel
SPHL swing
Sea state for operations

Winches

Winches should be suitable for man riding, including:

Dual automatic failsafe brakes
Each brake to be independently tested for at least full rated load (NOPSEMA guidance)
Winch to be confirmed to have suitable minimum speed (wave avoidance) for recovery

Rigging

Wire rope certificate
- Should be appropriately rated for lifting of persons
Wire rope termination Certificate
Hook block
- Inadvertent opening to be prevented
Anti-Two block
- System to be confirmed as functional

Load Testing

Load test certificate:

Load testing completed at minimum 12 month frequency or last modification or installation by a Competent Person using test loads based upon the planned lift, as determined by a lift analysis.
Calibration certificates for load test device (ie. loadtest cell)