…..through the NFPA 1981/1982 2013 standard change in the Low Air Alarm End of Service Time Indicator (EOSTI)!
The NFPA 1981 2007 standard required the alarm to sound when 25% of the cylinder’s air was available. The NFPA 1981 2013 edition will increase that requirement to 33% of the cylinder’s available air.
The NFPA 1981 2013 edition is the first time the EOSTI level has actually been set for the fire service. The 25% number accepted for years came from a NIOSH standard that actually had a tolerance of 20% to 25%.
With the addition of the 33% threshold for reserve air, the fire service can now more closely follow the NFPA 1404 standard on Fire Service Respiratory Protection and Training which calls for:
- The individual shall exit from an IDLH atmosphere “before” consumption of reserve air supply begins.
- The individual shall recognize that the low air alarm notification indicates that the member is consuming the reserve air supply.
In the world of air management and firefighter safety, increasing the safety margin through additional reserve air and clear indicators of the use of reserve air is definitely a positive move!
Blade geometry, materials used in the construction of the blade as well as the manufacturing process and heat treating are all contributing factors in cutter blade design and ultimately cut capability.
The most successful tool position for cutting through a highly reinforced B-Pillar post is parallel with the vehicle’s body ring with most of the current hydraulic cutters built today. The blades are able to close more before coming into contact with the metal, letting them generate more force than if the tool was fully open, and perpendicular to the vehicle. This means the tool is positioned in the window which could potentially block access to the injured occupant for medical care, or worse, the rescue cutter could rotate inward making contact with the patient.
- The Hurst Jaws of Life® S-700 and JL-500 cutter design has improved blade geometry which now enables the cutter blades to attain their maximum cutting capability when near the fully open position.
- The S-700 and JL-500 cutter blade have three distinct cutting angles.
- In addition, the transmission of energy from the piston through the linkage to the cutter blades now reaches its maximum cut capability at a five inch opening.
Today’s modern vehicles use highly advanced types of steel in their construction. The highly reinforced structures in today’s vehicles do not compress into a tight bundle like the A-Posts, Roof Rails and B-Posts of passenger cars built in the 80’s and 90’s. Instead, when the cutter blades make contact with the high-strength outer layer of steel in today’s posts, they are immediately up against the ultra-high-strength Martinsite Boron sheet metal which lines the inside diameter of that structure.
- The S-700 and JL-500 has maximum compressive forces in the near open position. As the blades close, the Martinsite steel cracks and fractures.
- As the cutters continue to close, blade angles change resulting in improved draw of the post material to the strongest cutting area at the rear of the blades.
Premium quality components used in the construction include:
- Forged 7075 T6 – 83,000 pounds tensile strength aviation grade aluminum alloy cylinder body.
- Hurst uses a forged shock-resistant tool steel that has been uniquely heat treated using a four-step tempering process in all the Jaws of Life® cutter blades which makes the blades chip and dent resistant while maintaining ductility.
- This is crucial when cutting Martinsite Hot Stamped Boron sheet metal and Pressure Hardened Boron Steel that is wrapped with multiple layers of high-strength, low-alloy steel.
Be safe out there!
In an ever changing society, the ability to enter an unknown environment with the best equipment possible is becoming more and more essential. It’s time to meet the Warrior Helmet! The Ballistic Warrior Helmet is a lightweight, warrior tested combat helmet with the best retention systems available from Team Wendy. The Warrior Helmet is a high cut helmet for maximum comfort and protection, which allows for use of any communication headset including TCI. The Warrior Helmet comes standard with a three-hole NVG Shroud and Side Rails to mount all the necessary equipment to do the job. The Warrior Helmet comes standard with Team Wendy Zorbium Action Pad (ZAP) Kit, but can be built around any budget with three upgradeable suspension systems including: Team Wendy EPIC, EPIC Air or CamFit Systems. The Warrior Helmet is NIJ Certified to Level 3A and is made of high density polyethylene. This is a must have for any Tactical Team and is available on L.N. Curtis & sons GSA Contract: GS-07F-0043L.
- Weight: 3.18 lbs.
- Size: Medium/Large (22” – 22 3/8”) and L/XL (22 3/8” – 24 ¼”)
- Colors: Black, Tan, OD Green
CNIC Navy Modular training units will soon be delivered to California, New Hampshire, Washington and Virginia Navy Bases for realistic fire fighting and rescue operations for structural and maritime training.
The units include two propane fueled fireplaces simulating an electrical fire on the second floor and a ground floor multi-prop fireplace with flare-up fire. Challenging entry/exit simulations are created with numerous moveable maze panels along with vertical challenges through access ports on the top module and a 30” vertical ladder. The unit includes a command center with PC for maintaining training logs along with temperature readings and specific personnel training evolutions.
Multiple safety features are provided including automatic extraction fan engagement and excessive temps monitors and automatic shut down if needed.
The units comply with NFPA requirements and include four (4) days of on-site training at time of delivery.