entrapment Archives - Page 5 of 11

Victoria’s advanced systems for engine crew protection

Bill GabbertNovember 28, 2016November 28, 2016Uncategorizedentrapment, research, rollover, safety1 Comment

Above: Country Fire Authority test of engine burnover protection systems. Screen shot from CFA video.

The Aussies are far ahead of wildland firefighting agencies in the United States when it comes to the protection of personnel during fire engine burnovers and rollovers. Since 1977 Victoria’s Country Fire Authority (CFA) has been creating, evolving, and improving systems to increase the odds of firefighters on an engine surviving if their position is overrun by fire. These efforts were intensified after two engine burnovers in 1983 and 1998 killed a total of 17 firefighters.

During the last 39 years the vehicles have been hardened in various ways. Examples include internal radiant heat curtains and nozzles positioned around the exterior of the truck that spray water as the fire approaches.

We did a quick search on Wildfire Today for “engine burnover” and were surprised at the number of results. Take a moment and at least look at the titles and brief excerpts. These, of course, are just articles on our website. We make no claim that all engine burnovers are included since we started this website in 2008.

On November 21 the CFA posted a video (below) about their crew protection systems. It covers the history of their efforts and several minutes of video recorded during a test when a fire was ignited that burned over three of their engines to evaluate the effectiveness of the designs. The maximum temperature recorded was 728°C (1,342°F)

Below is a screen shot from the CFA video.

Country Fire Authority test of engine burnover protection systems. Screen shot from the CFA video.

What if — in 2006 the five U.S. Forest Service firefighters that were entrapped and killed on the Esperanza Fire, instead of working on an engine similar to the USFS engine farther down this page, had been assigned to one built to CFA standards. Would they have taken refuge in the engine, pulled down the thermal protection shields and turned on the truck protection water spray instead of attempting to survive the fire outside the engine?

One feature of the CFA engines we noticed was a heavy-duty internal roll bar.

Internal roll bar Country Fire Authority engine — Internal roll bar in a Country Fire Authority engine.

We have written before about the need for U.S. wildland firefighting agencies to improve the survivability of engine crews during rollovers. These accidents involving large fire trucks, especially water tenders, are common.

In our opinion it is disgraceful that the outfits employing thousands of firefighters on engines have not taken this step to provide a safer working environment for their personnel.

The photo below is from one of the 34 articles on Wildfire Today tagged “rollover”.

Engine 492 crash Wyoming — On August 8, 2013 Engine 492 from the Medicine Bow-Routt National Forest and Thunder Basin National Grasslands was involved in a rollover accident on Wyoming State Highway 450 southwest of Newcastle, Wyoming. Three firefighters were injured, one seriously.

Thanks and a tip of the hat go out to Cameron.

Report released on entrapment of six firefighters on the Cedar Fire in Arizona

Bill GabbertNovember 1, 2016November 1, 2016UncategorizedArizona, Cedar Fire, entrapment, fire shelter, report

Above: Fire whirl on the Cedar Fire, June 28, 2016, around the time of the entrapment. Screen grab from the video.

A report has been released on the entrapment of six firefighters that occurred on the Cedar Fire south of Show Low, Arizona June 28, 2016.

The firefighters were part of the Navajo Interagency Hotshot Crew (NIHC) that remained along with two Type 6 engines and possibly one other crew after the Type 1 Incident Management Team was released the previous day. The assignment of half the crew, nine firefighters, was to “monitor” a part of the southwest side of the fire that had six miles of uncontained fire edge. The other half was working on the southeast side.

Three of the nine personnel on the southwest side served as lookouts while the remaining six were monitoring and checking the fire edge. When a very large fire whirl developed near the six, they realized their escape route was cut off, and took refuge in a previously burned area. The ground fuels had burned, but the canopy was still intact. As the fire approached they deployed their fire shelters, remaining in them for about 30 minutes.

cedar fire entrapment site — The entrapment site at the Cedar Fire.

After the fire whirl subsided, the squad members were able to hike out to staged vehicles. They were transported in three ambulances, medically evaluated, and transported to Summit Hospital in Show Low, Arizona where they were evaluated. Two firefighters were treated for smoke inhalation and all were released by 10 p.m. that evening.

The report says the personnel deployed and entered the shelters just as they had practiced several times in training, and the devices worked as designed. There were no difficulties, as reported at other entrapments, with the PVC bags becoming soft and difficult to open.

Thankfully there were no serious injuries and the training the firefighters had received paid off.

But there are a number of interesting facts about what occurred before the entrapment

Resources on the fire

On June 27, the day before the entrapment, the Type 1 Incident Management Team issued their final update on the 45,977-acre fire just before they were released later that day. Below is a portion of the document.

The report claims the Type 1 Team recommended that the number of personnel assigned be reduced on Tuesday June 28 to about 400. But on Monday, June 27 all firefighters except for two Type 6 engines were released. With a 70 percent chance of rain in the weather forecast, on Tuesday the local agency decided to replace the Type 1 Team with a Type 4 Incident Commander, two Type 6 engines, and one or two hand crews. The crew(s) had to be re-mobilized on Tuesday after being released. Some aircraft were also assigned on Tuesday.

Video of the large fire whirl

Weather on Tuesday, the day of entrapment

About 20 minutes before the 2:45 p.m. entrapment the weather at the fire was 95 degrees, 21 percent relative humidity, with a 7 to 10 mph wind out of the south. Although “numerous” people observed dust devils and fire whirls before the large fire whirl formed, there was no discussion about modifying fire suppression tactics. Dust devils can be an indicator of the potential for extreme fire behavior.

cedar fire entrapment — Fire whirl on the Cedar Fire, June 28, 2016. Screen grab from the video.

A few more details released about fire shelter deployment on the Cedar Fire

Bill GabbertJuly 4, 2016October 31, 2016UncategorizedArizona, Cedar Fire, entrapment, fire shelter, fire tornado1 Comment

On Sunday the Bureau of Indian Affairs released a “72-hour report” that contains a few more details about the entrapment of six firefighters and deployment of their fire shelters on the Cedar Fire south of Show Low, Arizona.

The new information includes mentions of a large fire whirl and three lookouts that were posted.

Below is the press release version of the 72-hour report. The formal memo-style document is HERE. They contain approximately the same information.

****

“On June 28, a large fire whirl formed near six members of the Navajo Interagency Hotshot Crew (IHC), entrapping them. In response to the intense heat, flying ash and woody debris, the firefighters deployed their fire shelters.

Throughout the 15 minute event, the crew maintained radio communication with each other and agency personnel. Aviation and safety resources were immediately dispatched to assist the crew.

After the fire whirl passed, the IHC walked out of the fire area and were transported to Summit Healthcare in Show Low, Arizona. Two firefighters were treated for smoke inhalation and all six firefighters were released from the hospital that evening. After the crew was released, a Critical Incident Stress Management Team was made available to the crew.

The Bureau of Indian Affairs initiated an Interageny Serious Accident Investigation (SAI) that evening. On June 30, the SAI Team members, led by Clark Richins, Team Leader, Bureau of Indian Affairs, reported to Western Region, Fort Apache Agency. Members of the SAI Team include: Chief Investigator, Safety Officer, Personal Protective Equipment Specialist, Long Term Fire Analyst, Hotshot Crew Representative, Public Information Officer, Writer/ Editor, and Regional and National Agency Liaisons.

The investigation will collect evidence, which includes conducting personnel interviews, inspecting equipment and analyzing photographs, weather and voice data. On June 30, the SAI Team completed their interviews of the IHC, which allowed the crew to return home.

According to the National Wildfire Coordinating Group Terminology Glossary, a fire whirl is a spinning vortex column of ascending hot air and gases rising from a fire and carrying aloft smoke, debris, and flame. Fire whirls may range in size from less than one foot to over 500 feet in diameter and have the intensity of a small tornado.

Prior to the event, the crew was working along the western flank of the uncontained fireline where they had previously been assigned for several days. At 12:00p.m three nearby lookouts observed low intensity surface fire, but by 2:00p.m., as the day got warmer, the fire behavior increased. These lookouts and an additional firefighter scouting the fireline witnessed the large fire whirl.

While managing wildland fires is inherently dangerous, all firefighters are trained to minimize the risk they take on every assignment. In the rare circumstance firefighters are faced with an impending entrapment, they are trained to consider all options to insure the safety of all crew members. This includes deploying fire shelters for protection from smoke, heat, and embers. The Navajo Interageny Hotshot Crew executed their training, which resulted in a successful outcome to a hazardous wildfire anomaly.

As a highly reliable organization, the wildland fire community strives to learn and transfer lessons learned on a continual basis. In the spirit of this culture, the BIA Western Region will provide the Factual Report to the Lessons Learned Center when the Report is finalized.”

****

Thanks and a tip of the hat goes out to Jonah.

Update on the condition of the firefighters who deployed fire shelters on the Cedar Fire

Bill GabbertJune 29, 2016July 4, 2016UncategorizedArizona, Cantwell-Hastings, Cedar Fire, common denominators, entrapment, fire shelter4 Comments

(UPDATED at 12:52 p.m. MDT June 30, 2016)

Today the BIA released a “24 Hour Report” about the fire shelter deployment on the Cedar Fire. It provided a few facts that were not previously disclosed by the agency.

The six firefighters deployed their shelters in an area that had already burned, and they were evaluated in the hospital for “smoke inhalation”.

The Serious Accident Investigation Team will be led by Jon Rollins, Chief Investigator for the National Park Service.

****

(Originally published at 9:52 p.m. MDT, June 29, 2016)

The Bureau of Indian Affairs provided more information today about the six firefighters on the Cedar Fire south of Show Low, Arizona who on June 28 found themselves in a situation where they had to deploy fire shelters. The firefighters, all from the Navajo Interagency Hotshot Crew, walked away from the site and were transported to Summit Healthcare in Show Low where they were treated and released that evening.

A Serious Accident Investigation Team has been formed and will investigate the circumstances surrounding the deployment.

We don’t know why or how the incident occurred, but if recent history holds true, we may never know, thanks to the unintended consequences of Senator Maria Cantwell’s and Representative Doc Hastings’ hastily conceived Public Law 107-203 signed into law in 2002.

But putting aside the unknown details of fire behavior, decisions made on the fireline, and the strategy and tactics being used on the Cedar Fire yesterday, there a few things that we do know.

The Type 1 Incident Management Team issued an update titled “Final Cedar Fire Update” on Monday, June 27. It said in part, “While 554 firefighters are working on the fire [Monday] morning, only the Team itself will remain by Tuesday afternoon. The Bureau of Indian Affairs (BIA) will assume command of the fire at 6 A.M. Tuesday.” That Monday update said the fire received rainfall on Sunday and more rain was expected on Monday.
The Type 1 Team turned the fire over to the Fort Apache Agency at 6 a.m. on Tuesday, June 28. There was no mention of a Type 2 or Type 3 Incident Management Team.
The Fort Apache Agency posted a fire update on Facebook at 1:05 p.m. on Tuesday, June 28 saying the resources on the fire that day were, “Navajo Hotshots, 3 Type 6 Engines, Fort Apache Fuels Type 2 IA Crew.” And, “Fire Personnel will continue to hold and mop up the fire.” These two crews and three engines probably amounted to a maximum of 50 people, plus miscellaneous overhead. This was down from 554 the previous day, a 91 percent reduction in personnel overnight.
Candy Lupe, a Public Information Officer with the Bureau of Indian Affairs’ Fort Apache Agency, told Wildfire Today that she was not sure exactly when the incident occurred but estimated it happened around 3 p.m. Arizona time on Tuesday, June 28.
The infrared scan of the fire conducted very early Monday morning, June 27, showed “scattered” and “isolated” heat over much of the fire. There was no record of an infrared scan prior to the day shift on Tuesday June 28, but they had been completed every day from June 17 through June 27.

We’re not pointing fingers or attempting to lay blame on anyone. Hopefully the investigation will bring to light some lessons that can be learned.

The incident brings to mind the Common Denominators of Fatal and Near-Fatal Fires, developed by Carl Wilson in 1976. Mr. Wilson put two lists together, a four-item list based on his studies of 61 fatal fires, and a five-item list that included an additional 31 near-fatal fires. More information about these lists is in our February 1, 2016 article, Are there 4 or 5 common denominators of fire behavior on fatal fires? Almost all recent wildland fire publications, if they publish the list, only have the four-item list.

These lists are not intended as a quick and easy checklist for investigators, nor are they rules or guidelines that must be followed. They are simply interesting commonalities seen on many fatal and near-fatal fires. Things to think about, not rules that must be adhered to.

Here is the five-item list that includes data from fatal and near-fatal fires:

Most of the incidents occurred on relatively small fires or isolated sectors of larger fires.
Most of the fires were innocent in appearance prior to the “flare-ups” or “blow-ups”. In some cases, the fatalities occurred in the mop-up stage.
Flare-ups occurred in deceptively light fuels.
Fires ran uphill in chimneys, gullies, or on steep slopes.
Suppression tools, such as helicopters or air tankers, can adversely modify fire behavior. (Helicopter and air tanker vortices have been known to cause flare-ups.)”

Fire shelters deployed on the Cedar Fire — firefighters injured

Bill GabbertJune 28, 2016October 31, 2016UncategorizedArizona, Cedar Fire, entrapment, fire shelter3 Comments

(Originally published at 8:58 MDT June 28, 2016)

Today six firefighters deployed fire shelters on the Cedar Fire south of Show Low, Arizona.

Candy Lupe, a Public Information Officer with the Bureau of Indian Affairs’ Fort Apache Agency, said all six were transported to area hospitals with non-life-threatening injuries. Other than that she was not able to answer questions about the nature or extent of the injuries. After the fire in the area cooled, the firefighters were able to walk away from the accident site. Medical, air, and ground resources were deployed to the area to provide assistance. The six firefighters were described as “a portion of the crew” that was working near a flare up on the remaining uncontrolled fire line of the Cedar Fire.

Ms. Lupe was not sure exactly when the incident occurred but estimated it happened around 3 p.m. Arizona time today, June 28.

Tuesday morning at 6 a.m. the Type 1 Incident Management Team demobilized and transitioned command to the Fort Apache Agency.

The “Final Cedar Fire Update” from Southwest Incident Management Team #2 was posted on InciWeb on June 27. At that time the fire was listed as being 45,977 acres, 75 percent contained, with 546 personnel assigned. The fire received rainfall on Sunday and more rain was expected on Monday. The report stated:

While 554 firefighters are working on the fire [Monday] morning, only the Team itself will remain by Tuesday afternoon. The Bureau of Indian Affairs (BIA) will assume command of the fire at 6 A.M. Tuesday.

An update on the fire that was posted on the Fort Apache Agency’s Facebook page around noon on Tuesday said:

The Southwest portion of the fire will continue to produce smoke as well as the interior of the fire.

Much of the rest of the update was devoted to fire rehabilitation activites.

Map Cedar Fire — This map shows the locations of heat detected on the Cedar Fire by a fixed wing aircraft at 2:43 a.m. June 27, 2016.

At 3 p.m. on June 28 the RAWS weather station “IRAWS 5 (Hwy 60 flat)(MST)” on the west side of the Cedar Fire recorded 90 degrees, 19 percent RH, and winds at 3 to 5 mph. Between 9 a.m. and and 5 p.m. the wind direction was very inconsistent, from the south, southwest, and northwest with variable gusts from 9 to 15 mph.

Our earlier primary article about the suppression of the Cedar Fire.

Thanks and a tip of the hat go out to Tom.

Close call for two engine crews in South Australia

Bill GabbertJanuary 26, 2016August 25, 2019Uncategorizedentrapment, South Australia

Fire engines were overrun by fire.

south australia near miss fire — Fire engine crews were overrun by a bushfire in South Australia. Screen grab from 3 News video.

A video has surfaced that documented what must have been a terrifying ordeal for fire engine crews that were working on a bushfire in South Australia on November 25, 2015. As they were responding to the fire the 90km/h (55mph) wind shifted, catching them by surprise and overrunning their position.

In the video (which you can see here) a fire official said the rapid rate of spread through recently cut, dried, agricultural stubble helped the firefighters by moving the fire past their location relatively quickly. The exposure to extreme heat was less than if heavier fuel had been present.

Many of the wildland fire engines in Australia have protection systems that discharge water through nozzles around the entire truck. The two firefighters that left the vehicle to start the pump may have been attempting to activate the system.

Thankfully there were no injuries.

Share this:

Share this:

Share this:

Share this:

Share this:

Share this: