| 3. Separator must be installed
in a level and plumb position for proper system function. Piping
to separator must be pitched in elevation of 1/4" to 1/16"
per foot to obtain a proper gravity system.
4. The bottom and sides of the
excavation shall extend a distance of at least one foot around
the perimeter of the separator.
5. Where air or hydrostatic testing
is required, internal pressure must not exceed 5 pounds per square
inch (PSIG) as measured at the top of the vessel while a soap
solution is applied to weld seams. DO NOT draw a vacuum on the
primary vessel. DO NOT pressurize the interstitial space of a
double wall vessel.
6. Before placing the separator
in the excavation, all dirt clods and similar foreign matter shall
be cleaned from the separator and areas of coating damages (if
any) shall be repaired with touch-up kits provided with the separator.
7. Equipment to lift the separator
shall be of adequate size to lift and lower the separator without
dragging and dropping to ensure no damage to the separator.
8. Separators shall be carefully
lifted and lowered by use of cables or chains of adequate length
(not less than 45o included angle) attached to the lifting lugs
provided. A spreader bar should be used where necessary. UNDER
NO CIRCUMSTANCES USE CHAINS OR SLINGS AROUND THE SEPARATOR SHELL.
9. Where anchoring by means of
a concrete slab is required, separators shall be separated from
the slab by at least six inches of sand or gravel. Under no circumstances
shall the separator be set directly on the concrete slab, nor
shall the separator be placed on any other hard or sharp material
that can cause deformation of the separator or damage to the coating.
10. Anchor straps and ground anchors,
if required, shall be installed in such a manner that they do
not damage the protective coating of the separator. McTighe provides
isolation pads with our standard hold down straps. Note data and
drawing regarding hold down straps at the end of this section.
11. If electrical accessories
are included with the separator, make temporary connections to
verify operation before items are installed.
12. Backfill consisting of clean
sand, gravel, or other non-corrosive inert material shall be placed
along bottom sides of separator by hand shoveling and tamping
to ensure that the separator is fully and evenly supported around
bottom quadrant.
13. Separator shall be filled
with clean water as soon as possible after placement on sand bed.
14. The backfill shall be deposited
carefully around separator to a depth of at least two feet to
avoid damage to coating. In applicable areas, the separator must
be covered below the known frost line or be equipped with a freeze
protection system.
15. All vent openings must be
piped in accordance with governing codes with proper grade up
from each connection to atmospheric vent outlet. The manway(s)
must be vented to prevent build-up of hazardous gasses, the separator
inlet must be vented to prevent air lock flow reduction, and the
outlet must be vented separately to prevent siphoning and to keep
vented gas out of the effluent system.
16. Customer must provide flame
arrestor where required by governing codes or conditions for safety.
17. Metal or plastic thread or
flange protectors should be removed from the unused openings and
pipe plugs installed. Pipe plugs and blind flanges (shipped installed
in the separator) should be removed from unused openings and reinstalled
with proper joint compound or gaskets.
|
