ULC-S656-14

This Standard provides minimum requirements for shop fabricated single-wall or double-wall oil-water separators intended to collect and separate free oil from water by gravity separation at an inlet free oil concentration not exceeding 2 000 mg/L.
These oil-water separators are also installed for the capture and retention of oil spills under dry weather conditions up to the free oil retention capacity of the oil-water separator.
These oil-water separators are intended for installation and operation in accordance with, but not limited to, the following:
A Manufacturer’s instructions;
B CCME PN 1326, Environmental Code of Practice for Aboveground and Underground Storage Tank Systems Containing Petroleum and Allied Petroleum Products;
C CPPI Code of Practice for Management of Water Effluent Quality at Petroleum Storage and Distribution Facilities; and
D Regulations of the authority having jurisdiction.
NOTE 1: Collection and disposal of the effluent, free oil, and separated solids from oil-water separators is beyond the scope of this document. Consult the authority having jurisdiction for disposal requirements for these substances.
NOTE 2: The accumulated solids are to be removed as recommended in the Manufacturer’s Operation and Maintenance Instructions to ensure no adverse effect on the performance of the oil-water separator.
The requirements of this Standard apply to all oil-water separators. Users are advised that the requirements of AHJs may impose additional performance and testing criteria beyond those described in this document.