Excerpts from FireRescue1.com:
According to the latest updates in NFPA 1901: Standard for Automotive Fire Apparatus, several important changes have been introduced. One notable addition involves the requirement for vehicle data recorders that can gather data to promote safe driving and riding habits. Additionally, vehicles must either maintain a calculated center of gravity no higher than 80% of their height, as verified through tilt-table testing, or incorporate a vehicle stability system (as per sections 4.11 and 4.13).
The contractor must also deliver comprehensive documentation covering the entire apparatus and each major operating system or component (section 4.20.2.3). This ensures that firefighters using the apparatus and mechanics servicing it have access to all necessary practical and technical information. There are 20 items in total listed, which aim to cover every aspect needed for safe operation and maintenance.
Recently, the Fire Apparatus Manufacturers' Association released its "Fire Apparatus Safety Guide," which outlines crucial safety procedures for apparatus operation. Item 20 within this document specifically addresses the safety signs mandated by FAMA, which have been integrated into both NFPA 1901 and 1906. This guide helps operators better comprehend the risks highlighted by safety signs located on various parts of the apparatus.
A new exception clause now requires manufacturers to provide a certification ensuring the apparatus complies with estimated in-service weight and stability requirements. This certification must link the maximum stopping speed to the Gross Vehicle Weight Rating (GVWR), extinguishing agent tank capacity, or tire manufacturer specifications. Alternatively, manufacturers can submit a detailed statement explaining any non-compliance issues and identifying who is responsible for resolving them (section 4.21).
Chapter 12 focuses on chassis and vehicle components, introducing new standards for diesel particulate filters installed on fire apparatus (12.2.6.7). In Chapter 14, concerning driving and crew areas, there are updated requirements regarding seat belt length and measurement instructions. The standard now mandates a warning device alerting occupants when someone in a designated seating position isn't wearing a seatbelt. Seatbelts can now also be orange, in addition to red (14.1.3).
All crew cabs on apparatus with a GVWR exceeding 26,000 pounds must ensure occupant protection during crashes. The revised document advises against wearing helmets while the vehicle is moving due to their negative impact on the restraint system. Proper helmet storage during vehicle movement is also required (14.1.7.4).
Chapter 15 covers body, compartments, and equipment mounting, with more specific guidelines for retro-reflective striping, especially on the rear of the vehicle. Rear striping must now follow a chevron pattern sloping downward from the vehicle's centerline at a 45-degree angle (15.9.3.2).
Chapter 16 discusses fire pumps and associated equipment, incorporating industrial supply pumps rated over 3,000 gpm into the same chapter as fire pumps rated at 3,000 gpm or less. Specific requirements based on pump capacity are clearly outlined in the revised chapter.
A new requirement was added to test and verify the accuracy of gauges and flow meters during pump certification testing (16.14.3.2).
Chapter 20 focuses on foam proportioning systems, mandating that these systems undergo type testing for accuracy and receive certification from the manufacturer. After installation, they must also pass operational tests and receive certification from the final installer (20.11).
Chapter 22 covers line voltage electrical systems, with material reorganized and clarified. Key changes include bonding the protective ground from a shoreline inlet to the vehicle frame, switching the neutral conductor through the transfer switch when multiple power sources exist, establishing a minimum wire size for cords on permanently mounted reels, and requiring fixed scene lighting devices to be tested and listed (22.7).
Chapter 24 deals with air systems, introducing new training requirements for fire department personnel. A high-temperature alarm is now mandatory in the compressor compartment, accompanied by labels warning operators against obstructing airflow. Additional modifications include requiring compressors to have air-quality monitoring systems, necessitating shoreline connections for electric motors if applicable, and mandating high-pressure air hoses and couplings to have pressure ratings equal to or greater than the highest expected pressure, with a 4-to-1 safety factor.
The testing and certification standards for breathing air fill stations have undergone significant updates. System testing must now be tailored to the specific breathing air system, and a new section has been added for utility air system testing.
Chapter 26 introduces a new section addressing trailers used for transporting equipment or other vehicles under emergency response conditions. Modifications were implemented throughout the document to accommodate these requirements for tow vehicles.
Chapter 28 focuses on ultra-high pressure pumps and associated equipment, a new addition due to the growing use of these pumps on fire apparatus. This chapter offers guidance for both manufacturers and purchasers of UHP pumps, specifying that these pumps must have a rated discharge pressure of 1,100 psi (7,600 kPa) or higher.
These updates reflect the ongoing commitment to enhancing safety and functionality in firefighting vehicles, ensuring they remain reliable tools for first responders.
Hope supplies Ring Magnets made from both strong rare earth Neodymium materials and more economical Ferrite material. Our range includes large-diameter magnetic rings up to 145 mm wide and small magnetic rings with diameters as small as 5mm. The inside diameter across the void area of each ring magnet can also vary to make the ring magnet more suited to specific applications or for more suitable fitment options. There is also the direction of magnetism options available which means the magnetic rings can be manufactured as an axial ring magnet, a radial ring magnet or a diametrically magnetised ring magnet. The direction of magnetism may be more suitable for special manufacturing operations or specific applications in consumer electronic goods. As with other magnet shapes, the vast majority of ring-shaped magnets are axially magnetised, meaning the poles lie at each end of the height dimension i.e. thickness.
China Ring Neodymium Magnet,Small Ring Rare Earth Magnets,Super Strong Ring Magnets Manufacturer,Small Ring Magnet,Small Ring Magnet Supplier
Ningbo Hope Magnet Co.,Ltd , https://www.hopemagnets.com