of the rotating sludge collector mechanism, the tank floor shall be brought
to finish grade by means of a cement-mortar grout surfacing swept into
place by use of the sludge collector arms, as hereinafter specified. When
the collector mechanism has been erected and inspected by the engineer
representative of the manufacturer and the arms and blades have been
adjusted to give the required clearance above final floor grade, a 50 by
150 mm 2 by 6 inch wooden straight-edge with metal-clad edge shall be
fastened to each sweeping arm approximately 6 mm 1/4 inch below the
sweeping blades to provide a suitable squeegee. Cement-mortar grout shall
be composed of one part cement, three parts sand, with sufficient water as
required for conditions of placement, and with one teaspoon of powdered
aluminum added per bag of cement. Before the cement-mortar grout is
placed, the floor shall be thoroughly cleaned of dirt, soil, or other
substances that would prevent the proper bonding of the surfacing to the
concrete subfloor. The grout surfacing shall be brought to finish grade as
nearly as possible by hand. The collector arms with straightedges attached
shall be rotated manually to complete the operation. Use of the drive unit
for sweeping in the grout surfacing will not be permitted. Provision shall
be made to prevent grout from entering the sludge cone; any grout which
falls in the sludge cone or on the tank walls shall be removed immediately.
3.9.8
Repair Painting
All metal surfaces that require painting shall be inspected for holidays,
scratches, chips or other damages. These imperfections shall be refinished
by cleaning all burrs and rough surfaces and sanding to a smooth finish,
after which the surfaces shall be primed and repainted.
3.9.9
Adjustments
For items of equipment involving V-belt drives, adjustment of sheave
alignment and belt tension shall be carried out in accordance with product
manufacturer's instructions as furnished by the plant manufacturer.
3.10
FIELD TESTS AND INSPECTIONS
3.10.1
General
The [Contracting Officer will] [Contractor Quality Control representative
shall] conduct field inspections and witness field tests specified in this
specification. The Contractor shall perform field tests and provide all
labor, equipment and materials required for testing, except that the
Government will provide water, fuel, and electric power required for field
test, when available. All defective equipment, materials, or workmanship
disclosed as a result of the tests given herein shall be corrected by the
Contractor at no cost to the Government.
3.10.2
Alignment and Leveling
Inspection shall be made to assure that the plant is level within
tolerances recommended by the plant manufacturer. All plant components and
equipment shall be checked to ensure that they are properly aligned and
level.
3.10.3
Plant Equipment
All mechanical and electrical units shall be operated and tested as
specified herein. Should any defects that occur before or during the
tests, shall be remedied and changes or replacement of equipment shall be
SECTION 11375N
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