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.
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
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.
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."
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.
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.
The Central Valley Arson Investigators association continued the tradition of providing outstanding training at their annual Advanced Explosive Recognition class. The training was held once again at the Tulare International Agri-Center grounds. This year’s topic was the history of the American criminal bombings. Guest speaker Ed Nordskog, LA Sheriff’s Department, lead the class through the history of American bombings, from the earliest bombings in America right up to the most current-day events.
While in the classroom, we were given a taste of what was to come in the afternoon on the range, a few large booms came from the range-site, and this, of course, sparked the interest of the attendees filling the room with anticipation for the afternoon’s activities. I’m not really sure if that was part of the scheduled shots, or if Frank just couldn’t wait to try out his handy work.
Thanks to Geary Baxter and his crew, everyone was treated to a hot dog lunch with all the fixings, chips, chili, and drinks. Shade covered bleachers were provided to keep the sun off the students during the demonstrations. The range was arranged with several props from mail boxes (fairly close to the bleachers), to two transit buses and an ambulance several hundred feet down range. And, of course, there was a pressure cooker, which was placed down range, so that we could see the effects of a device similar to the one used in Boston.
The students were given the count down, so they could get their cameras ready to capture the moment, “Fire in the hole, three, two, one”! Our very own Scotty Baker, the voice of the AER range, would call out when each prop was ready to be set off. This year had more than its fair share of silence when the charge was supposed to go off. After making our first run down range to get a closer look (and see the handy work of the Sheriff’s bomb team), it was clear what had happened, the fragmentation from the first explosions took out the six-pair lead-in wire. By the way, the trip down range was in a people mover provided by CVAI; these guys think of everything.
The class was attended by nearly one hundred and fifty students from police, fire, and evidence people from all over the state. There was even a fellow from New York City in the class (and I thought it was a long drive from San Diego). There was great representation from the CCAI elected officials; President Scotty Baker, First Vice-president Tom Peirce, Second Vice-president Eric Emmanuele, Director Dale Feb, and myself Director Troy Morrison.
Thanks to all the folks at Central Valley Arson Investigators for all their hard work!! Another great training class. We are all looking forward for what is in store for next year when the theme for the AER class will be “First Responders”.
Troy Morrison, PIO CCAI
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