Method for the validation of a fuse head in an electronic detonator, wherein said detonator comprises: a reference resistor, a fuse head, at least one capacitor and switching means, wherein in a first position of the switching means, the reference resistor is connected to the at least one capacitor forming a first RC circuit, and in a second position of the switching means, the fuse head is connected to the at least one capacitor forming a second RC circuit; the method comprising the following steps: measuring at least once a first charge time; activating the switching means to the second position to replace the reference resistor in the RC circuit with the fuse head; measuring at least once a second charge time; and determining the deviation of the second charge time from the first charge time.

Method for the validation of a fuse head in an electronic detonator, wherein said detonator comprises: a reference resistor, a fuse head, at least one capacitor and switching means, wherein in a first position of the switching means, the reference resistor is connected to the at least one capacitor forming a first RC circuit, and in a second position of the switching means, the fuse head is connected to the at least one capacitor forming a second RC circuit; the method comprising the following steps: measuring at least once a first charge time; activating the switching means to the second position to replace the reference resistor in the RC circuit with the fuse head; measuring at least once a second charge time; and determining the deviation of the second charge time from the first charge time.

A quick-disconnect multi-coupler assembly for disconnecting utility lines connecting well equipment to power sources. The utility lines may be hoses or electrical cables. The power sources may be pressurized fluid or electrical energy sources. The well equipment may be located on an offshore platform and the power sources may be located on a floating support vessel. A fixed mounting plate located on the floating support vessel may be connected to the power sources by vessel-side utility lines. A removable mounting plate may be connected to the well equipment by well-side utility lines, and can be releasably coupled to the fixed mounting plate to provide a pressurized fluid or electrical energy pathway from the power sources to the well equipment. Rapid disconnection of the well-side utility lines from the power sources may be performed by decoupling the mounting plates using a decoupling cylinder that can be activated from a remote location.

A quick-disconnect multi-coupler assembly for disconnecting utility lines connecting well equipment to power sources. The utility lines may be hoses or electrical cables. The power sources may be pressurized fluid or electrical energy sources. The well equipment may be located on an offshore platform and the power sources may be located on a floating support vessel. A fixed mounting plate located on the floating support vessel may be connected to the power sources by vessel-side utility lines. A removable mounting plate may be connected to the well equipment by well-side utility lines, and can be releasably coupled to the fixed mounting plate to provide a pressurized fluid or electrical energy pathway from the power sources to the well equipment. Rapid disconnection of the well-side utility lines from the power sources may be performed by decoupling the mounting plates using a decoupling cylinder that can be activated from a remote location.

A system includes: a separable connector including an electrically insulating housing and an electrically conductive probe and an insert. The insert includes: an electrically insulating body including an open end configured to receive the electrically conductive probe; an electrically conductive assembly inside the electrically insulating body and configured to electrically connect to the electrically conductive probe; and an arc snuffer. The arc snuffer includes: an inner ablative arc-quenching portion that surrounds an open interior between the open end and the electrically conductive assembly, the open interior being configured to receive the electrically conductive probe; and a layer on exterior surface of the inner ablative arc-quenching portion. The layer is configured to produce a visible indicator related to a remaining life of the insert when the layer is exposed to an arc.

A system includes: a separable connector including an electrically insulating housing and an electrically conductive probe and an insert. The insert includes: an electrically insulating body including an open end configured to receive the electrically conductive probe; an electrically conductive assembly inside the electrically insulating body and configured to electrically connect to the electrically conductive probe; and an arc snuffer. The arc snuffer includes: an inner ablative arc-quenching portion that surrounds an open interior between the open end and the electrically conductive assembly, the open interior being configured to receive the electrically conductive probe; and a layer on exterior surface of the inner ablative arc-quenching portion. The layer is configured to produce a visible indicator related to a remaining life of the insert when the layer is exposed to an arc.