3003 W CASINO RD BLDG 45-11 2018-09-20

7. In accordance with appropriate NFPA standards and Boeing operating procedures, 150 Ib. wheeled Halon 1211 fire extinguishers, one per aircraft, will be provided on the aircraft ramp in front of the delivery center for properly trained Boeing employee or fire department operations use. The NFPA standards that cover this topic require that these extinguishers carry a minimum 80B rating. The 150 Ib. Halon 1211 units provided by Boeing carry a UL rating of 30A:24OB:C, well in excess of the minimum rating provided in these standards. 8. An additional fire protection feature being provided more for building protection than for aircraft loading walkway protection is an open head deluge water spray system for the building first floor glazing materials that abut the aircraft ramp. This fire protection feature is being provided in accordance with NFPA 415 requirements, however, it should be noted that this standard was used for guidance only, and that the decision to provide the glazing water spray system was a risk management decision and not driven solely by the NFPA 415 standard. This system is designed to provide a 0.25 gpm/sq. ft. density over the exterior surface area of the glazing material as outlined in Section 4.1.5.3.1.1 of NFPA 415. Linear type heat detection was the detection system chosen to actuate the deluge water spray system, taking into account the experience of accidental discharges involving optical fire detectors and the reliability of linear style heat detection systems. Although installed for building fire protection, the presence of the deluge water spray system will afford a limited level of protection for the aircraft ramp area and the aircraft loading walkways. 3. Conclusion Neither the IBC nor the IFC provides specific guidance for the design and construction of aircraft loading walkways. The national standard published by the NFPA provides guidance for the design and construction of this type of equipment at airport terminals or terminal complexes; however, this standard is not listed in Chapter 45 "Referenced Standard" of the IFC. Since the Delivery Center Building at the Boeing North Charleston site would not be considered a terminal building or part of a terminal complex, the provisions of NFPA 415 are not considered applicable to this circumstance. That and the information provided above, provides ample justification that the proposed aircraft loading walkways will provide an equivalent level of fire protection for Boeing and customer personnel that will be using this equipment. Therefore, based on the provisions referenced above, The Boeing Company requests approval of the proposed aircraft loading walkways constructed of steel and glass elements, in accordance with IFC 104.9 'Alternative materials, and methods".