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9.2 Dry-Well Monitoring, Single-Wall Tank
Error! Reference source not found. represents a typical dry-well
monitoring layout for a single-wall tank. Monitoring wells are placed
around the perimeter of the tanks, and are dug as close as possible to
the tanks or product lines for optimal sensor response.
The manhole should be watertight and the monitoring well should be
at least 2 feet (61 cm) deeper than the bottom of the tanks to be
monitored. Either 2-inch (5.1 cm) or 4-inch (10.2 cm) well casing
should be used.
To obtain an adequate sample area, the
perforated
section should be
a large part of the well casing’s length. Place a cap on the bottom of
the well casing to prevent dirt entry. Backfill dirt around the casing.
The vapor sensor monitors hydrocarbon vapors. A
liquid
sensor
should also be installed and placed lower than the vapor sensor to
detect any liquid buildup.
Though vapor sensors are
not
damaged by submersion in liquid, they
will not function properly until removed from the liquid and given
sufficient time to dry. The sealed liquid sensor is protected from
particles such as dirt. It requires no particular placement. Any
combination of vapor and liquid sensors may be used.
Figure 9-2 Dry Well Monitoring, Single-Wall Tank
Содержание OPW SiteSentinel iSite
Страница 15: ...Page 15 of 145 www opwglobal com Figure 2 4 Console Connectivity ...
Страница 17: ...Page 17 of 145 www opwglobal com Figure 2 6 Wiring Connections ...
Страница 22: ...Page 22 of 145 www opwglobal com Figure 2 11 Standard Twisted Pair Petro Net Installation ...
Страница 25: ...Page 25 of 145 www opwglobal com Figure 2 14 Petro Net Over Ethernet Option ...
Страница 33: ...Page 33 of 145 www opwglobal com ...
Страница 34: ...Page 34 of 145 www opwglobal com Figure 4 1 924B Probe Installation ...
Страница 61: ...Page 61 of 145 www opwglobal com Figure 5 22 In Tank Probe Setup ...
Страница 74: ...Page 74 of 145 www opwglobal com Figure 9 3 Dry Well Monitoring Single Wall Tank ...
Страница 78: ...Page 78 of 145 www opwglobal com Figure 9 7 Double Wall Tank with Well Monitoring ...
Страница 90: ...Page 90 of 145 www opwglobal com Figure 13 7 ACR RIM Jumper Board ...
Страница 142: ...Page 142 of 145 www opwglobal com Declaration of Conformity ...
Страница 143: ...Page 143 of 145 www opwglobal com ...
Страница 146: ...Page 146 of 145 www opwglobal com NOTES ...