Dive Boat Conception Burns

  • Sad. No smoke detectors/fire alarms in the cabin?

    Yes they had house type units. One crew men checked the galley floor and made sure the electric stove was cool at 2:35 am before returning to the wheel house where 4 other crew mates were. The fire starts sometime between then and 3:15 am. I hope all will wait for the full details of the tragedy before pointing to blame.

    I am so sad about this.


    Don

    ''Great mother ocean brought forth all life, it is my eternal home''
    Don Berry from Blue Water Hunters.
    Spearfishing Store

    Edited once, last by Don Paul ().

  • From: Toxic fluoride gas emissions from lithium-ion battery fires https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5577247/

    Lithium-ion batteries are a technical and a commercial success enabling a number of applications from cellular phones to electric vehicles and large scale electrical energy storage plants. The occasional occurrences of battery fires have, however, caused some concern especially regarding the risk for spontaneous fires and the intense heat generated by such fires1–5. While the fire itself and the heat it generates may be a serious threat in many situations, the risks associated with gas and smoke emissions from malfunctioning lithium-ion batteries may in some circumstances be a larger threat, especially in confined environments where people are present, such as in an aircraft, a submarine, a mine shaft, a spacecraft or in a home equipped with a battery energy storage system. The gas emissions has however only been studied to a very limited extent.

    An irreversible thermal event in a lithium-ion battery can be initiated in several ways, by spontaneous internal or external short-circuit, overcharging, external heating or fire, mechanical abuse etc. This may result in a thermal runaway caused by the exothermal reactions in the battery6–10, eventually resulting in a fire and/or explosion. The consequences of such an event in a large Li-ion battery pack can be severe due to the risk for failure propagation11–13. The electrolyte in a lithium-ion battery is flammable and generally contains lithium hexafluorophosphate (LiPF6) or other Li-salts containing fluorine. In the event of overheating the electrolyte will evaporate and eventually be vented out from the battery cells. The gases may or may not be ignited immediately. In case the emitted gas is not immediately ignited the risk for a gas explosion at a later stage may be imminent. Li-ion batteries release a various number of toxic substances14–16 as well as e.g. CO (an asphyxiant gas) and CO2 (induces anoxia) during heating and fire. At elevated temperature the fluorine content of the electrolyte and, to some extent, other parts of the battery such as the polyvinylidene fluoride (PVdF) binder in the electrodes, may form gases such as hydrogen fluoride HF, phosphorus pentafluoride (PF5) and phosphoryl fluoride (POF3). Compounds containing fluorine can also be present as e.g. flame retardants in electrolyte and/or separator17, in additives and in the electrode materials, e.g. fluorophosphates18,19, adding additional sources of fluorine.

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