1-15. FUEL LOADING/UNLOADING SYSTEM (Con't).
A 10 in. (25.4 cm) hinged opening in manhole allows top loading.
16 Fill Cover
Helps prevent damage to tank if fuel is bottom loaded or unloaded
with vapor vent closed. Offers a means of venting vapors created
during fuel loading and unloading.
Helps prevent collapse of tank if fuel is unloaded with vapor vent
Hollow construction. Carries vapors from vapor vent hose to rear
Overturn Rail (Roadside)
dam vapor collection header.
Connects vapor vent to roadside overturn rail.
Vapor Vent Hose
Located on top of semitrailer in front of manhole. Vent is spring
loaded and cable operated by a control lever in cabinet. Protects
tank from damage caused by vacuum or pressure during unloading