Engineering Standard



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SAES-B-018
9
Testing
9.1 All tests shall be witnessed by designated representatives of Loss Prevention and Fire Protection prior to mechanical completion acceptance of the fire system. The performance flow test shall meet NFPA 11.
9.2 During testing of the foam system, the roof shall be floating at a level no higher than 50% of its maximum height. The installed foam system shall be performance tested with a gauge pressure of 1,035 kPa (150 psig) at the foam proportioning truck. The seal area shall be covered within 10 minutes of foam flow from the chamber to the extent as follows a. For existing tanks with a single foam chamber, 12 m from the chamber along the seal in both directions. b. For tanks with multiple fixed foam chambers and deflectors, the entire seal area.

Note:
It’s recommended to conduct performance testing of the foam system during the
initial filling for hydrotest which will help avoiding product contamination that might occur
if the test was done later.
9.3 The frequency of maintenance, inspection, and testing of fire protection equipment shall meet GI.

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 11 of 14 Saudi Aramco Company General Use Walkway Drain and Flange for Testing and
Maintenance
Solution piping (Riser)
braced to tank shell
Foam maker and foam chamber
Tank shell
Seal
Shield
Floating
Roof
Wind Girder mm mm
DETAIL A
Top of tank shell
Foam backboard mounted above shell See Note VIEW B-B
B
300 mm
Walkway
300 mm
Low Point Drain
Grade
See Detail
ROAD
Terminal Hose
Connection(s)
Slope
Floating Roof m
Pad: Carbon steel mm thickness)
Deflector: Carbon steel mm thickness)
Drain Slots, mm x 13 mm on m Centers approximate dimensions)
Foam Dam
VIEW C-C
VIEW D-D
Foam Chamber Maker
Top Seal
Foam Deflector Foam Dam
150 mm
Note: For more details, see figures in NFPA 11 that Figure 1 was based on.

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