Tamper detection security for a tank trailer

A security system for detecting if an openable cover covering at least one hole in a wall of a tank trailer has been tampered with, said security system comprising:

• a locking member mountable to the tank trailer and movable between a locked position wherein said locking member blocks said cover from being opened, and an unlocked position wherein said locking member extends unobstructively away from said cover;
• an actuating device mountable to the tank trailer and being operatively connected to the locking member in order to move said locking member between the locked position and the unlocked position, said actuating device comprising;
• a lever pivotally attachable to the tank trailer;
• and
• a metal wire having a first end connected to the locking member and a second end operatively connected to the lever;
• whereby pivoting said lever pulls on the metal wire to move the locking member from the unlocked to the locked position;
• and
• a sealing mechanism capable of engaging the actuating device when the locking member is in the locked position in order to prevent movement thereof, said sealing mechanism comprising a breakable indicator which is broken upon disengaging the sealing mechanism from the actuating device, thereby indicating that the openable cover has been tampered with.

A tank trailer comprising:

• a tank having a manhole and a vent proximate to said manhole in a wall of said tank;
• an openable cover comprising a first disk for covering said manhole, a second disk for covering said vent and a linking member linking the two;
• and
• a security system for detecting if the openable cover has been tampered with, said security system comprising:
• a locking member mounted to the tank trailer and movable between a locked position wherein said locking member blocks said cover from being opened, and an unlocked position wherein said locking member extends unobstructively away from said cover;
• an actuating device mountable to the tank trailer and being operatively connected to the locking member in order to move said locking member between the locked position and the unlocked position;
• and
• a sealing mechanism capable of engaging the actuating device when the locking member is in the locked position in order to prevent movement thereof, said sealing mechanism comprising a breakable indicator which is broken upon disengaging the sealing mechanism from the actuating device, thereby indicating that the openable cover may have been tampered with.