Tks 3245 Perancangan Alat Proses
Tks 3245 Perancangan Alat Proses
Tks 3245 Perancangan Alat Proses
As a general guide the wall thickness of any vessel should not be less
than the values given below; the values include a corrosion allowance
of 2 mm:
EXAMPLE 1 CONT. (HEAD)
EXAMPLE 2
400°F
Digunakan sf standar = 2 in
EXAMPLE 2 CONT.
EXAMPLE 2 CONT.
-No general rule for H/D, generally depends on processing requirements, available land
area, and height limitation.
-D and H of standard steel tanks for storage at atmospheric pressure usually range from
10-220 ft and 6-64 ft, respectively.
-Commonly (simplified cases): H=D; H=2D; H=3D or 4D (also the most common)
All process vessels will have openings for connections, manways, and
instrument fittings. Openings in pressure vessels in the regions of shells or
heads are required to serve the following purposes:
Manways for letting personnel in and out of the vessel to perform routine
maintenance and repair.
Holes for draining or cleaning the vessel.
Hand hole openings for inspecting the vessel from outside.
Nozzles attached to pipes to convey the working fluid inside and outside
of the vessel.
The presence of an opening weakens the shell, and gives rise to stress
concentrations. Thus, sufficient reinforcement must be provided to
compensate for the weakening effect of the opening.
UKURAN PIPA MASUKAN DAN KELUARAN
5. Norton, R.L., Machine Design: An Integrated Approach, 2nd ed., Prentice Hall,
2000.
VESSEL SUPPORTS
Brackets, or lugs, can be used to support vertical vessels. The
bracket may rest on the building structural steel work, or the vessel
may be supported on legs. If the bending moment is likely to be
significant skirt supports should be considered in preference to
bracket supports.