Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 3222 DECEMBER 2016 • FOGHORN REGULATORYREPORT The results of the fire modeling gave us a proven seating and outfit arrange- ment that demonstrated the integrity and acceptability of the 5A concept. Designers and builders who followed the pattern of the resultant guidance presented in Marine Safety Center Technical Note (MTN) 01-13 would be assured of approval. Additions or changes in individual designs could require additional engineering analysis. What remained to be demonstrated before vessel acceptance was that the operator could control transient fire load and keep it below 0.5 lbs/sq ft. Transient fire load (TFL) is difficult to measure. It includes personal clothing, purses, computers, baggage, strollers, briefcases and the like brought aboard by passengers.After determining a way to quantify the fire load by means other than weighing, then came the problem of educating and controlling the pas- sengers who must then comply, as well as giving the vessel crew a credible backing as they faced potentially difficult situations. As with the fire modeling study and resulting memorandum that validated the 5A concept, a second effort was chartered to identify a means of con- trolling and validating loading under actual operating conditions. Without some means of estimating TFL before, during, and after loading, there was no assurance that the 5A operating condition limitation was being met. A plan was developed where a survey and analysis of the types, weight and fire characteristics of TFL were actually observed on vessels subject to the flow of passengers likely to have TFL such as ferries carrying commuters and/or those carrying pas- sengers to vacation destinations. Out of this came an estimate of the number and types of TFL and their individual estimated weights. After assessing the probable variables it was determined that TFL per person was to be limited to one carry-on not larger than 9 inches by 14 inches by 22 inches, and one personal item not larger than 9 inches by 10 inches by 17 inches. Larger bags are to be checked and stowed outside the accommodation space (some con- trolled exceptions). Bags that seem to be heavier than normal will be weighed and total TFL will be limited to 25 pounds per person. The next most critical item was stowage of TFL. Accumulations of carry-ons pose a concentration of fire risk that is unacceptable. TFL should remain in the company of the passenger, be stowed under the seat and/or as low as possible. Accumulations next to bulkheads or in corners pose a risk of structural failure in a severe fire scenario. Strollers are also a unique risk and must be subject to other limitations of distribution. The last concern—and probably the most important—is preservation of egress. Aisle and stairways must remain open and uncluttered at all times. A consideration underlying the