8/13/2019 CasualtyInformation_1997_02

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No. 2/97 Edited by DTP-245

SHIP TYPE:Standby Ship SIZE(GRT):834 BUILT YEAR:1949

Starting from 'Dead Ship'

Course of EventsA standby vessel stationed close to a drilling platform, experienced a "black-out". The "black-out" was caused by water contamination of fuel andoccurred shortly after switching from one service tank to another. The water was drained from the tank and fuel system. The main engine was restartedand was running normally.

To provide electric current for lighting, steering etc., one of the auxiliary engines had to be started. Upon trying this, it was discovered that the sparestarting air bottle was empty although the pressure gauge indicated full pressure.

An emergency arrangement to fill the air bottles from one of the main engine cylinders existed, but the arrangement did not function. It was decided totry to start the engine with high pressure air from a breathing apparatus and a flask was picked up from the dispensary. During the starting operation anexplosion followed. Four crew members suffered burn injuries and were evacuated by helicopter. The fire was extinguished and the vessel towed toshore base.

Extent of damageNo serious damage was reported in the engine room except for extensive damage to the auxiliary engine concerned. The crew members who sufferedburn injuries recovered at the hospital.

Probable CauseThe flask brought forward from the ships dispensary was coupled up to one of the auxiliary engines starting air system by temporary connections usingarmoured plastic tubes and cleats. The explosion occurred the instant the engine began turning.

The bottle from the ships dispensary was later found to be filled with oxygen. The explosion took place when the oxygen mixed with the oil, blowingaway the temporary connections and injuring the people occupied in the operation.

Lessons to be learned

- Fuel service and settling tanks are to be regularly checked and drained for water.

- The availability and functioning of the arrangement for starting up from "dead ship" should be checked out regularly.

- Standards for colour marking of gas cylinders are not universally recognised and different practices exist; for example, between gas cylinders for

medical use and for industrial use. Oxygen flasks from a dispensatory are often white whilst compressed air for breathing apparatus is seen filled onflasks with all sorts of colours, including white.

Consequently, utmost care should be demonstrated by the crew in the use of gas flasks/cylinders on board vessels having world wide deliveries.Information regarding governing safety precautions for the different types of gas under pressure should be a part of the safety drill on board.

Casualty Informationis published by Det Norske Veritas, ClassificationSupport.

Det Norske VeritasNO-1322 Hvik, NorwayTel: +47 67 57 99 00Fax: +47 67 57 99 11

The purpose of Casualty Informationis to provide the maritime industry with'lessons to be learned' from incidents of ship damage and more seriousaccidents. In this way, Det Norske Veritas AS hopes to contribute to the

prevention of similar occurrences in the future. The information included is notnecessarily restricted to cover ships classed with DNV and is presented,without obligation, for information purposes only.

Queries may be directed toDet Norske Veritas, Classification Support, NO-1322 Hvik, Norway.Fax: +47 67 57 99 11, e-mail: experience.feedback@dnv.com

Det Norske Veritas AS. This publication may be reproduced freely oncondition that Det Norske Veritas AS (DNV) is always stated as the source.DNV accepts no responsibility for any errors or misinterpretations.

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