Cargo Hold Virtual Tour

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Transcript  Wat we hier hebben gezien is dus een cargo hold. Dit is een filmpje van het dek van een bulk carrier . Je ziet hier duidelijk de hatchcovers.  down in to the cargo hold 3 d animation australian ladder cargo hold production plans ongelukken met hatches nederlands ondertiteld een ander filmpje over hatchcovers    201352 Weather tightness of hatch covers Even on new ships hatch covers are only truly weather tight in the static condition; weather tightness can’t be guaranteed in dynamic conditions such as at sea and especially in rough weather. When water does enter the hatch cover, by design it goes into the drain channel, through a non-return valve, and then passes on to the deck. The nonreturn valve ensures water can only go from the drain channel to the deck and not vice versa. Unfortunately, inspections have revealed missing, blocked or otherwise plugged non-return valves and drain channels. Some nonreturn valves have even been found capped. These conditions mean that water which enters the hatch cover is not able to pass out from the hatch cover drain channel and instead goes into the hold, resulting in cargo damage. Inspections have also revealed hatch cover rubber packing that is missing or damaged. Where repairs have been effected, they sometimes appear to have been made too localised to the damage (six to twelve inches, whereas manufacturer’s instructions normally require a minimum of twenty four inches to be changed.) The ends of the repair packing should be cut at a 45 degree angle, not vertically, and the packing should be hammered from the centre towards the sides.  Another deficiency noticed during inspections is with the rubber washers of cleats. Often, these washers are either too hard (due to age) or covered by thick layer of paint which makes the rubber washer ineffective.    Problems with choked bilge pipe 201266 Neglected sounding pipes The three photographs below show evidence of the lack of regular tank/ bilge monitoring on board. Sounding pipes with missing/ ineffective caps can potentially lead to progressive flooding and cargo damage. Such vessels are clearly unseaworthy and must be detained by authorities for violation of the loadline and SOLAS conventions until effective closing arrangements have been fitted. It is good practice to include sounding pipes in the ship’s planned maintenance system, ensuring that every sounding pipe is regularly inspected along the entire length to the extent possible and the section exposed to the weather is kept free of corrosion and wastage, and threads of the pipes and caps are regularly dressed and greased.    200717 Choked sounding pipe On one of our vessels, cargo damage resulted from ingress of water into no. 3 hold through a leaky hold-bilge valve which had gone undetected. An investigation revealed that both the P and S hold-bilge sounding pipes of the hold had been choked for nearly a year, even though ship's staff had documented information. Editor's note: It must be remembered that the primary purpose of the hold bilge system is to preserve the ship from sinking due to flooding as a result of breach of the hull. The secondary purpose of the system is to remove water and other liquids that may accumulate due to minor leaks, condensation or spills. The purpose of sounding hold-bilges regularly is thus to ensure the safety of ship, and by extension, lives and cargo.  A diligent crew can easily rectify a choked bilge sounding pipe by opening up and cleaning out or renewing the suspect section. In the event that access is prevented due to overlying cargo, this can be accomplished soon after discharge. Management, both ashore and on board, must ensure the implementation of a reliable system of obtaining and recording of tank and hold soundings and rectify cases of negligence with effective training and audits.    To pump bilge waste overboard, the 2nd Engineer designed an OWS bypass device using a flexible hose and metal flanges. Images taken by a junior engineer on board the vessel while at sea.
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