New PILO internal floating roof systems keep all flotation compartments readily available for leakage inspection — yet still meet API 650 Appendix H requirements.
The system is designed to provide an economical full liquid surface contact roof while addressing user concerns about safety hazards created by trapped product or vapors.
PILO comprises an aluminum frame fabricated of mechanical fastened structural members. The frame is supported by interior and rim legs. Flotation units are placed in the frame openings and fastened to the frame by bolts or self-tapping screws.
The two-piece flotation units comprise aluminum formed pans that have all four corners welded to insure a leak-tight seal. The top section of each flotation unit is formed around the flanges of a lower unit and sealed even though it is not subject to immersion in the liquid. Each top section has small resealable openings to be used for inspection. Full PILO details are free.
PETREX Incorporated, Box 907, Warren PA 16365