Red Jacket LPG Premier, Installation Manual, Page: 26 / 40

Installing A Red Jacket Submersible LPG Pump-Motor Unit Typical System Schemes with Submersible LPG Pump-Motor Unit
22
Figure 6. Example percentage of unbalance calculation
Typical System Schemes with Submersible LPG Pump-Motor Unit
General
There is always a certain risk involved in the handling of “Liquefied Petroleum Gas” (LPG or Autogas). The risk of
occurrence of the most serious hazard, a “BLEVE” (Boiling Liquid Expanding Vapor Explosion) of the storage tank,
is practically eliminated by installing the storage tank underground or by coverage with a mound of sand.
In spite of technical safety measures specified in this manual other hazards remain possible. In order to reduce the
risk, each person who is involved in any way with operation, installation, maintenance or repair must read and apply
the safety instructions fully.
All national and local applicable safety regulations must be applied.
When and where the LPG installation has displayed additional safety regulations, these should be followed.
Although great care has been taken in the preparation of this manual, Veeder-Root shall not be liable for any
misunderstanding, errors and/or loss or defects arising from the use of this manual.
Design codes and local regulations must be followed.
LPG storage tanks and manifolds are classified as unfired pressure vessels, which are subject to the inspection
and acceptance of the inspection agency. LPG manifolds shall be designed, fabricated and tested as a minimum
in accordance with the ASME section VIII Boiler and Pressure Vessel Code division 1, or with BS 5500, both
supplemented with requirements of local regulations.
Design and Test Pressures
The design pressure shall be equal to the maximum vapor pressure of commercial grade propane at an ambient
temperature of 323°K (50°C) that amounts to approximately 1780 kPa (258 psi).
The hydrostatic test pressure shall be 1.4 times the design pressure = 2500 kPa (363 psi).
T
2
T
1
L
1
L
2
L
3
T
3
T
1
T
3
L
1
L
2
L
3
T
2
T
3
T
2
L
1
L
2
L
3
T
1
T1 = 5.1 Amps
T2 = 4.6 Amps
T3 = 5.3 Amps
Average = 5.0
Max. Diff. = .4
.4 5.0 = 8%
T3 = 5.0 Amps
T1 = 4.8 Amps
T2 = 5.2 Amps
Average = 5.0
Max. Diff. = .2
.2 5.0 = 4%
T2 = 5.0 Amps
T3 = 4.9 Amps
T1 = 5.1 Amps
Average = 5.0
Max. Diff. = .1
.1 5.0 = 2% rj/051-327/Fig 4.eps
First
Connection
Second
Connection
Third
Connection