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LADWP Transformer Fire 956 Seward St., Los Angeles California.

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Presentation on theme: "LADWP Transformer Fire 956 Seward St., Los Angeles California."— Presentation transcript:

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2 LADWP Transformer Fire 956 Seward St., Los Angeles California

3 Conducting The Investigation Observe, document and evaluate all of the physical evidence available Obtain all available witness statements and observations Obtain all other relevant data (weather, alarm, etc.) Determine the area of fire origin Evaluate sources of ignition within the area of fire origin Evaluate all possible scenarios and determine the most viable hypothesis that is consistent with the physical evidence, witness observations, relevant data

4 Los Angeles Fire Department Investigation Report Date of Loss: December 17,2002 Time: 0014 Hrs Location: 956 Seward St., Los Angeles CA. Incident #: 0014 Cause: Undetermined Comments: Most Probable Cause: Transformer Fire/Boiling Oil Ignited Roof Material

5 National Oceanic & Atmospheric Administration (NOAA) Date12/16/2002 12/17/2002 Time10:4711:4700:47 SkyFew-BrokenClearScattered-Overcast Visibility8 miles9 miles10 miles Temperature55 0 F.53 0 F. WeatherRain (Trace)* Humidity939693 Wind Speed330 Wind DirectionVariable Data from USC campus, downtown Los Angeles *1.94 Rain from 1:00pm-6:00pm and.02 rain from 10:00pm-11:00p

6 LADWP Transformer Fire 956 Seward St., Los Angeles California Pre-fire Aerial View Skylights

7 LADWP Transformer Fire 956 Seward St., Los Angeles California Post-fire Aerial View

8 LADWP Transformer Fire NORTH Seward St. Romaine St Hudson Av. 956 Seward St., Los Angeles California LADWP Transformer Bank

9 LADWP Transformer Fire 956 Seward St., Los Angeles California Area of Fire Origin 2 nd Floor Building Plan View

10 LADWP Transformer Fire North side of the building (Looking East) LADWP Transformer Bank Containing 3 Transformers 956 Seward St., Los Angeles California

11 Security Camera 956 Seward St., Los Angeles California Security Camera (Looking Northeast) The surrounding apartments appear to be dark. The intense light from the N/E corner of the intersection remains. (2 seconds after the explosion)

12 Possible Scenarios An Electrical Failure in the Building Caused a Massive Arc-Fault in Transformer? No reported evidence of failure(s) in secondary transformers providing power to the building. The transformer failed prior to any evidence of fire in the building. There is no physical evidence to support this theory. Primary Transformer power Primary Transformer power Pole Secondary transformers Provide building power Secondary transformers Provide building power This hypotheses can be eliminated An Electrical Failure in the Building Caused a Massive Arc-Fault in Transformer


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