Monday, 29 October 2018

Dousing the Flames: What Should be Done to Prevent Fires on Container Ships?

In March, the Maersk Honam container vessel was sailing hundreds of miles south-east of Salalah, Oman, when it erupted into flames. 
Nearly two months later, it was dragged into a  port at Dubai, whose embers still flickering in the hold. Of the 27 seafarers who had been on-board when the fire struck, 22 were able to abandon ship. The remaining five never returned. 
Tradional firefighting techinique are less effective to tacke the scale of present scenario. A number of marine insurers, including the International Union of Marine Insurers (IUMI), Allianz, the Swedish Club and DNV GL have spoken out about the industry’s failure to address containership fires. However, for a number of reasons, they face an uphill struggle.

To overcome freight fees

The cause of the Maersk Honam fire is currently the subject of an ongoing investigation. Nevertheless, evidence from previous incidents points to hazardous cargo being misdeclared as a primary factor.
Introduced more than half a century ago, the International Maritime Dangerous Goods (IMDG) Code governs the carriage of materials deemed hazardous on cargo vessels. Based on 2016 figures, the International Cargo Handling Coordination Association estimates that 5.4 million containers are packed with dangerous goods (DG) every year.
Nevertheless, once the cargo is inside containers, it is difficult for seafarers to know whether their contents should be classified as DG or not. This creates an incentive for companies to avoid higher cargo rates by misdeclaring the cargo as non-hazardous, thus allowing it to be stowed in hard-to-access areas on-board ships. This hinders crew members’ ability to deal with fires, as well as the fact that certain chemicals may react with water to form flammable gases.

Rules does not cope up

Even as rules grow stronger, sceptics have said that this still won’t do much to dissuade shippers from misdeclaring cargo. Hapag-Lloyd spokesperson Nils Haupt told JOC that shippers already have to sign DG container packing certificates, and that the company doesn’t believe “stricter rules on shippers would help anything”.
According to Uwe-Peter Schieder, vice-chairman of IUMI’s Loss Prevention Committee, the issue is not with the IMDG code itself, but rather with the level to which countries are willing to put in stricter enforcement systems and checks for misdeclared cargo. While coast guards in the US and certain European countries do open containers and impose penalties for wrongdoing, the same cannot be said globally.

Ineffective firefighting capabilities on ships

Stronger regulations on cargo are one thing, but ensuring that container ships are able to fend off fires is a whole other issue.
Safety of Life at Sea (SOLAS) regulations have historically included legal requirements that dictate which firefighting systems should be on board. Nevertheless, according to IUMI, these regulations were originally designed for smaller general cargo ships of a bygone era, and aren’t suitable for today’s megaships.
For example, CO2 deployment systems installed on container ships are now ineffective. Often the gas is unable to penetrate the walls of containers, and if they contain a lot of oxygen, the fire will continue to burn regardless. When fire moves to the deck of a container ship, the absence of natural fire compartments makes it difficult to contain it, and cooling the decks with water is also impossible due to a lack of suitable equipment.
Ships are also not required to deploy fire detectors on deck. Schieder says that on vast ships with a relatively low number of seafarers on board- most of whom won’t be checking the temperature of containers regularly – the chances of recognising incipient fires before they spread are very slim.
SOLAS regulations were amended in 2016 with a number of changes designed to bring fire protection up to speed. For example, ships designed to carry containers above deck should be fitted with at least one water mist lance. However, IUMI claims that the new measures don’t go far enough, and that sending seafarers in to douse fires using hoses still presents immediate dangers.

New fire safety solutions

Last year, the German Insurance Association (GDV) proposed a number of technical improvements that could be added to ships. It claimed that individual compartments should be added below deck to prevent fires from spreading, while a water-based firefighting system should be deployed to cool the vessel’s structure and cargo.
Water curtains – which Schieder says were being used on smaller cargo ships 40 years ago – could be used to separate sections and cool infrastructure above deck. GDV also proposed that infrared cameras and thermal systems should be mounted on-board ships to help detect when containers breach a certain temperature.
Although, there are a number of practical challenges involved with installing these systems; the placement of monitors and sensors should not get in the way during loading, for example. Nevertheless, a primary concern will be cost. Schieder says that retrofitting older vessels will be too expensive for many shippers, but there is hope that new-builds could adopt stronger fire protection measures as part of their design.
IUMI’s Marine Loss Prevention Committee will continue to push the International Maritime Organization (IMO) to put container ship safety on its agenda, and raise awareness of better fire protection measures to shipping companies and member states. This will likely require a costly formal safety assessment of container ships, but with the damaging effects of recent fires, a wake-up call is well overdue.
Did you subscribe for our daily newsletter?
It’s Free! Click here to Subscribe!
Source: Ship Technology

No comments:

Post a comment