Drones and UAV offer a very real solution for the inspection of confined areas, such as tanks / cargo holds. Traditional inspection of these tanks is a laborious, expensive and poses many potential risks. The use of a drone revolutionises the time needed and the the safety of cargo tanks and cargo holds inspection.
By performing tanks and cargo holds inspections using drones the specialist (24marine.com) can check the the real time conditions of places that are not accesible by normal human conditions.
A drone can be quickly deployed to capture images and video to allow asset inspectors to view all internal spaces. This includes fitting pipes, wall and bulkheads junctions, welding, structural members, without the need for workers to spend time in a highly hazardous environment, workinng at high.
Industry statistics shows that 98% of the costs are related to HSE and preparation, only 2% to the inspection itself. By removing the need for staging, scaffolding, downtime and the time is taken for humans to enter confined spaces leads to a cost reduction that amounts to hundreds of thousands of dollars
Traditional cargo tank inspection takes days to implement. Tank inspections carried out by a drone can take as little as two hours per tank. or cargo hold.
IHM is a list that provides ship-specific information on the actual hazardous materials present on board, their location, and approximate quantities onboard vessels.
The purpose of an IHM survey is to provide ship owners, managing agents, crews, engineers, and workers with a management report of all the hazardous materials which, are on-board the vessel.
The main materials that the IHM survey covers:
lead in paint.
The IHM has the following parts:
PART I: Materials contained in ship structure or equipment
PART II: Operationally generated wastes, and
PART III: Stores
The IHM Part I shall be prepared and certified for new ships and ships in operation and shall be maintained and kept up to date during the operational life of the ship, while the IHM Part II & III are only required to be prepared when the ship is decided to be sent for recycling. For the preparation of IHM Part I, hazardous materials set out in appendix 1 and 2 of the HKC or Annex I and II of the EU SRR shall be investigated. The picture below shows part I, part II and part III.
IHM Part I for new ships should be developed at the design and construction stage based on suppliers’ declarations on the hazardous material content of the products. The determination of hazardous materials present on board existing ships should, as far as practicable, be conducted as prescribed for new ships. Alternatively, in the case where documentation is not available, samples shall be taken from the ships to investigate the hazardous materials. For new ships, all the hazardous materials listed in Appendix 1 & 2 or Annex I & II shall be investigated, while for ships in operation Appendix 1 / Annex I is a must, and Appendix 2 / Annex II is to be investigated as far as practicable.
There are two main legislations with respect to ship recycling in the market, one is IMO Hong Kong Convention (HKC) SR/CONF/45 and the other one is the EU Ship Recycling Regulation (EU SRR) EC No 1257/2013. HKC has in total of 6 guidelines and MEPC.269(68) is the guidelines for the development of the inventory of hazardous materials (IHM) under IMO.
The Hong Kong Convention:
It will enter into force 24 months after the date on which the following conditions are met:
Signed by at least 15 states;
The combined merchant fleets of the signatory states are not less than 40% of the GT of the world’s merchant shipping,
The combined maximum annual ship recycling volume of the signatory states, during the preceding 10 years, is not less than 3% of the GT of the combined merchant shipping of the same states.
The entry into force conditions of HKC is not met yet (Aug 2020) and its compliance is on a voluntary basis. HKC will apply to ships, operating in the marine environment, which is equal to or above 500 GT. Navy ships and domestic ships are excluded from the scope.