Safety valve and system for hydrocarbon storage tanks

Patent · Tue Jun 24 04:00:00 EDT 1986

OSTI ID:5399677

Kinghorn, R E; Schulze, M

A safety system is described for a hydrocarbon storage tank having a floating roof, a water drain in the roof, a drain opening from the tank, and a flexible line connecting the roof drain to the tank drain for carrying off rain water collected on the floating roof and preventing leakage of hydrocarbon liquid and through the tank drain. The system consists of: an electrically-operated, normally-closed valve means connected in the tank drain, means responsive to pressure in the system exceeding a predetermined amount to maintain the valve means in a closed position for safety purposes until overridden, means responsive to the electrical conductivity of liquid on the inlet side of the valve means to detect the presence of water therein, and electric circuit means interconnecting the conductivity-responsive means and the electrically-operated valve means and operable to energize the valve means to open the same on detection of the presence of water in the inlet thereto.

• Assignee: NOV; NOV-85-015739; EDB-86-142638
• Patent Number(s): US 4596266
• OSTI ID: 5399677
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
024000* -- Petroleum-- Storage-- (-1989)
CONTAINERS
CONTROL EQUIPMENT
DESIGN
DRAINAGE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC CIRCUITS
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FOSSIL FUELS
FUELS
HYDROCARBONS
HYDROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
PHYSICAL PROPERTIES
PRESSURE EFFECTS
RAIN WATER
RELIEF VALVES
STORAGE
STORAGE FACILITIES
TANKS
VALVES
WATER