Document Responsibility Loss Prevention Standards Committee
SAES-B-018 Publish Date 13 February 2020 Next Revision 13 February 2025 Foam Systems Saudi Aramco 2020.
All rights reservedPage 12 of 14 Saudi
Aramco Company General Use Figure 2 - Multiple Foam Chamber Locations Tanks >38 m (125 ft) Diameter - Typical Layout of Foam Chambers Notes: 1) Two inch hose connections are required at top of tank stairs by the platform with supply piping located upstream of riser block valve.
2) For tanks
that require multiple chambers, the number of chambers is specified in NFPA 11 one chamber perm ft of circumference.
Document Responsibility Loss Prevention Standards Committee
SAES-B-018 Publish Date 13 February 2020 Next Revision 13 February 2025 Foam Systems Saudi Aramco 2020. All rights reserved
Page 13 of 14 Saudi Aramco Company General Use
Figure 3 - Layout of Supply Piping to Hose Connections and Multiple Foam Makers Notes: 1) Two inch male hose connection shall be accessible from top stairway platform.
2) Foam deflectors and foam backboards shall be offset from the wind girder walkway to avoid blocking entrance to floating roof.
3) Block valves) in lateral and riser to be car-sealed open (CSO).
Figure 4 - Layout of Riser with Inch Hose Connections Wind Girder Handrail required, but not shown)
Stairway
Two
2½
- inch Gated Hose Connections at
Stairway Platform- inch Gated Storz Hose
Connection
3
-
Inch
Riser
Lateral(s)
Foam Lateral Terminal
Connections with Block Valve at each Connection
Slope Lateral
toward the Low Point DrainLow Point Drain
Dike
Wind Girder Handrail required, but not shown)
Two 2½
- inch Gated
Hose Connections at Stairway Platform
Header to Foam
Chambers
Stairway
Chamber
-
Hose
Document Responsibility Loss Prevention Standards Committee
SAES-B-018 Publish Date 13 February 2020 Next Revision 13 February 2025 Foam Systems Saudi Aramco 2020. All rights reserved
Page 14 of 14 Saudi Aramco Company General Use
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