MIL-HDBK-1005/9A
= [(0.4085)(146)]/[(0.5)(8)2] = 1.86
No
English
[(21.2)(552)]/[(0.1524)(203.2)2] = 1.86
=
SI
Therefore, use two flared outlets.
3.10.2.3 Sloping Bottom. The bottom of the LET should slope
from the outlet end back to the inlet end at about 1/8 inch per
foot (10.4 mm/m) of tank length. This will facilitate the
transport of settled solids to a solids collection hopper at the
inlet end of the LET. The collection hopper bottom should slope
from side to side at about 1/4 inch per foot (20.8 mm/m), with a
sludge withdrawal at the low side.
3.10.2.4 Sludge Scraping Mechanism. Provide chain and flight
sludge scraping mechanism. Fabricate major components from
nonmetallic materials (such as nylon resins) to avoid corrosive
effects of salt water in oily waste. Specify fiberglass flights
spaced 6 to 10 feet (1.8 to 3.05 m) apart. Specify polyurethane
wear shoes to protect edges of flights from abrasion damage by
the tank bottom rails and tank side track angles. Specify
carbon steel for drive chain, drive sprocket, shaft sprockets,
and shafts. Drag chain may also be specified as a high strength
nylon resin. Specify that carbon steel components be shop-
finished as follows: blast clean in accordance with Steel
Structures Painting Council (SSPC), SP 5, Joint Surface
Preparation Standard White Metal Blast Cleaning; and shop prime
and finish coat with coal tar epoxy, similar to Carboline
Carbomastic 3 and 14, 5 to 7 mils minimum dry thickness.
3.10.2.5 Oil Skimmer. Provide means of removing oil from
surface of load equalization tanks and discharging to waste oil
storage tank. Mechanical simplicity and efficiency and waste
oil characteristics are the most important equipment selection
criteria.
Two types of mechanical skimmers are described in
subparagraphs a) and b). In most situations the flexible tube
type skimmer is recommended for removal of floating oil. It
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