Table 2-5. Serviceable Limits (Self-Sealing Cells)3

TM 1-1500-204-23-3 Table 2-5. Serviceable Limits (Self-Sealing Cells) Condition Limit Cell Interior Loose liner at throat of fitting. Looseness of 1/2 inch in width around entire circumference at throat of fitting. Edge looseness at liner lap. Acceptable up to 1/4 inch maximum width for entire length of liner lap, provided 1-inch bond is maintained. Edge looseness on liner reinforcements Maximum looseness of 1/2 inch provided loose corner patches and chafing patches. area does not exceed 15 percent of total area. Blisters or separations other than in the edge area allowable up to 15 percent of the total area. Looseness under cemented components Looseness of 15 percent of individual area pro- such as attaching straps and baffle shoes. vided 1/4-inch bond is maintained around edge. Blisters between liner and fitting flanges. Maximum diameter of 1/4 inch; maximum one per lineal foot and two per fitting provided 1-inch bond is maintained. Damaged grommets in accessories. Acceptable provided serviceability is not affected. Damaged coating on accessories (metal, Acceptable provided rust, corrosion, or other wood, or rubber). deterioration is not present. Checking due to weather, ozone, dry Acceptable provided there is no indication of cracking, or surface imperfections. activation. Blisters in linear laps. Maximum diameter of 1/4 inch average one per lineal foot of splice with a maximum of five in any one 5-foot length of splices. Channels in inner linear laps. Maximum dimension of 1/8 inch by 3 inches with a maximum of one in any 5 lineal feet of splice. Channels around entire outer edge of Maximum width of 1/4 inch. fitting flange. Channels at tapered construction stepoff Maximum width of 1/4 inch for entire length of area or edge of lap splices of ply. lap. Open and channels in three ply liner over- Maximum dimension of 1/8 inch by 3 inches pro- laps or tailored corners. vided 1 inch minimum bond is maintained between end of channel and sealant. 2-13