fire take II - I. II. Emergency signals a. Fire and...

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I. Emergency signals a. Fire and Emergency - Continuous blast oh ships whistle and general alarm bells for a period of at least 10 seconds b. Abandon Ship - More than 6 short blasts and one long blast on the whistle and the same signal on the general alarm bells c. Man Overboard - Hail, and pass the word “MAN OVERBOARD” to the bridge i. Lower Boats - 1 short blast on whistle ii. Stop Lowering - 2 short blasts on whistle iii. Dismissal from boat stations - 3 short blasts on whistle II. Extinguishing Agents a. Water 1. Primarily a cooling agent 2. Most affective at 100C because water becomes steam and absorbs more heat and moves heat away from the burning material 3. steam also expands to 1700 times it’s volume displacing air therefore water also acts as a smothering agent 4. straight streams-most commonly used form 5. should be directed at the seat of the fire ii. Fog Streams 1. breaks water up into smaller particles increasing surface area –greater heat absorption 2. use where the use of water should be minimum iii. High Velocity Fog Streams 1. Used to reduce heat in compartments 2. Primary used for protection of firefighters or directing a fire away 3. Directly connected to the fire hose iv. Low Velocity Fog Streams 1. Applicators are tubes that are angled at the end 2. Effective in fighting class B fires where entry is difficult
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This note was uploaded on 04/30/2008 for the course LNG 230 taught by Professor Tisch during the Spring '07 term at United States Merchant Marine Academy.

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fire take II - I. II. Emergency signals a. Fire and...

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