Federal Aviation Administration

This is the first in a series of safety bulletins that are intended to help us prevent accidents and incidents. This bulletin is directed at the increasing problem of runway incursions.

B.L. Bainbridge, N.R. Keltner

A series of large pool fires has provided temperatures and heat flux data for al large, thermally massive object. Tower temperatures were obtained at 4 elevations. Temperature measurements on a large calorimeter were used to obtain heat flux levels at 3 axial stations and 4 angular locations. The tests show large spatial and temporal variations for each test that seem to be largely driven by wind effects. A conditioning analysis was used to extract data at periods of lower wind velocities to allow a comparison between test data and simplified fore models. The conditioned data shows a significantly lower variance and better symmetry around the large calorimeter.

George A. Uriano

ATP Authorizing Legislation

1988 Omnibus Trade Act

1992 American Technology Preeminence Act Assist U.S. businesses to create and apply generic technology to:

Commercialize significant new scientific discoveries and technologies rapidly

Results manufacturing technologies, Cooperate with Other Agencies

William D. Walton, Edward K. Budnick

A series of fire tests in several typical office occupancy configurations were conducted in order to address the use of quick response sprinkler technology. These tests included l} heat release rate tests, 2) compartment fire tests and 3) a large office test. The heat release rate tests were designed to characterize the burning rates of a computer work station and open.shelf office storage. The compartment fire tests were designed to examine the effectiveness of quick response sprinklers in typical office fires involving a computer work station or an open office module. Measurements of heat release rate, air temperature, and the concentration of oxygen, carbon monoxide and carbon dioxide were taken. A large office test configured with multiple open office modules was conducted to verify the compartment test results and examine the possibility of multiple sprinkler activation. Measurements of air temperature and the concentration oxygen, carbon monoxide and carbon dioxide were taken.

William D. Walton

A series of fire tests was conducted to examine the effect of sprinkler sprays on the burning rate of materials. Tests were conducted on an array of empty cardboard boxes and two sizes of wooden cribs representing light hazard fuel packages. Free burn tests and tests with selected sprinkler sprays applied during . the steady burning period were conducted. Free burn heat release rates are compared to heat release rates with sprinkler sprays operating.