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ABSTRACT

Factors controlling the spread of smoldering combustion on solid wood (red oak, white pine) were examined in a configuration designed to enable self-sustained smolder.  The sample was in the form of a U-shaped channel 74 em long with 6.4 em thick walls.  A controlled flow of air was confined to the interior of the channel.  Smoldering was initiated on the interior surface either of the upstream end of this channel (yielding forward smolder propagation), the downstream end (reverse smolder) or mid-length (coupled forward/reverse smolder).  In separate tests the air flow velocity (referred to the initial cross section of the channel) was varied from about 9 to 22 em/sec.  At the low end of this range, the smoldering process was prone to extinction; at the high end it was increasingly likely to transition into flaming combustion.  A simple energy balance model indicates a central role of radiative transfer in sustaining the smolder process.

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Description

This recall involves NVIDIA SHIELD tablet computers with 8-inch touch screens. Model numbers P1761, P1761W and P1761WX and serial numbers 0410215901781 through 0425214604018 are included in this recall. NVIDIA and the model and serial numbers are etched on the left side edge of the tablets. The SHIELD logo is on the back of the tablets.

 

Details are at CPSC

Description

This recall involves model year 2014 Arctic Cat Prowler 500 HDX and model year 2015 Prowler 500 HDX models. The recalled vehicles include vehicle identification numbers (VIN) from 303194 through 305166. The VIN number is located on the rear frame tube under the rear of the box. The vehicles are green, red, vibrant red metallic, or emerald green metallic. “Arctic Cat” is printed on each side of the hood. Also 500 is printed on each side on the front fenders, HDX on each side of the rear cargo box, and “Arctic Cat” on the cargo box tail gate.

 

Details are at CPSC

DETROIT (WXYZ)

Kim Warner got the scare of her life behind the wheel of her Jeep Wrangler.  "I saw a flash under the hood," she remembers.  She says she was driving at a low speed when her brakes went out and the shifter jammed.  "I had both feet on the brake and my tires were spinning.  I noticed flames coming out the passenger side," she says.

Her boyfriend who was nearby ran, jumped in, and pulled her out of the SUV before it got worse.  "As I pulled her out that is when the flames came thru the dash," he said.

Chrysler sent an inspector, but the automaker said in a statement:  "The cause of the fire was deemed inconclusive by the investigator."

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In the new issue of NFPA Journal®, President Jim Shannon said the Association will focus on the leading causes of home fires, including cooking. "We also need to continue to push hard for home fire sprinklers. That's still a large priority for NFPA, and we plan to work very aggressively in 2014 on our residential sprinkler initiative," he said.

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This recall involves battery-operated night lights with an AC adapter included.  The night light collection includes a pink hedgehog, a blue bird, a yellow rocket, an orange dino egg, a white soccer ball and a green shark.  The model numbers are printed on the bottom side of the night lights.

 

Name Model Number
Color
Size
Hedgehog 060-02-1397 Pink 3.5”(h)x 5.5”(w) Bird 060-02-1398 Blue 4.0”(h)x6.5”(w) Rocket 060-02-1399 Yellow 6.0”(h)x4.75”(w) Dino Egg
060-02-1400 Orange 6.0”(h)x4.75”(w) Soccer Ball
060-02-1401 White 5.0”(h)x5.25”(w) Shark 060-02-1402 Green 3.5”(h)x6.9”(w)

The next CCAI Training Seminar will be held November 2 - 4, 2015

Citronella Candle Hazard

Members and Friends

As you all are aware, we at CCAI want you to be informed. Therefore, I will relate to you an incident that happened in Irvine, CA.

A young school teacher was living in an upscale three story apartment complex on the second floor. The apartment had one bathroom, one bedroom, a living room, and a kitchen area off the living room. The ceiling above the kitchen was at 7 feet while the rest of the apartment was standard height of 8 feet. The apartment has fire sprinklers and one sprinkler is located above the kitchen counter and would reflect water onto the range and counter top if activated.

For some reason the school teacher was burning a Citronella candle on the counter top adjacent to the sink. The candle she purchased was in a small metal bucket with a hoop handle; the candle was not confined in glass. The teacher was washing dishes in the sink when her cat jumped onto the counter top and knocked over the bucket containing the candle. She reacted and reached for the toppled candle with both hands. In one hand she had a glass that she was washing, which contained an amount of water. Some of the water went into the bucket with the candle. A flame came out of the bucket and caused the sprinkler to activate. The water from the sprinkler also got into the bucket and there was an explosion. This entire event happened in a matter of seconds. 

The thought of a candle exploding was a mystery to me and investigator partner, Harry Hatch. We checked several stores trying to purchase the same type of candle the school teacher had described, but no luck. We wanted to see just what the candle would do and also prove or disprove the event.

After looking up Citronella candle fires on the net, we were very surprised to learn that yes, if you add water to a burning Citronella candle it will flare up and sometimes cause an explosion. We all learn something all the time. Be informed and go to yahoo, type in Citronella candle fires and have a look at the videos; you may be as surprised as we were.

Do not be afraid to write us with your hints or new investigation experiences. CCAI is in the business to keep you up to date and informed.

Be Careful Out There
Brad Hamil
Past President
2010

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