Inspection of underwater structures
First Claim
1. A radiation detector for use in a deep water off-shore underwater environment, comprising a hermetically sealed outer casing having a waterproof plug and socket connection for a telemetry cable, and within the outer casing, a radiation detector tube having a hermetically sealed metal case out of one end of which extends an output lead, wherein the said end of the radiation detector tube through which the output lead passes, the output lead and a portion of the plug connected to the output end are encapsulated in a resilient impervious material so as to prevent the ingress of water to the part of the radiation detector tube where the output lead emerges, and means for mechanically isolating the radiation detector tube from the outer casing.
1 Assignment
0 Petitions
Accused Products
Abstract
A radiation detector for use in an underwater environment, comprising a radiation detector tube having a metal case out of one end of which extends an output lead wherein the said end of the tube is encased in a resilient water-proof compound so as to prevent the ingress of water into the body of the radiation detector tube. Marine structures incorporating such radiation detectors also are described.
6 Citations
11 Claims
- 1. A radiation detector for use in a deep water off-shore underwater environment, comprising a hermetically sealed outer casing having a waterproof plug and socket connection for a telemetry cable, and within the outer casing, a radiation detector tube having a hermetically sealed metal case out of one end of which extends an output lead, wherein the said end of the radiation detector tube through which the output lead passes, the output lead and a portion of the plug connected to the output end are encapsulated in a resilient impervious material so as to prevent the ingress of water to the part of the radiation detector tube where the output lead emerges, and means for mechanically isolating the radiation detector tube from the outer casing.
- 6. A structure for use in an off-shore exploration structure having at least one position at which it is desired to detect the presence or measure the density of a cement grout, a radiation detector positioned at that point, said radiation detector comprising a hermetically sealed outer casing having a waterproof plug and socket connection for a telemetry cable, and within the outer casing, a radiation detector tube having a hermetically sealed metal case out of one end of which extends an output lead, wherein the said end of the radiation detector tube through which the output lead passes, the output lead and a portion of the plug connected to the output end are encapsulated in a resilient impervious material so as to prevent the ingress of water to the part of the radiation detector tube where the output lead emerges, and means for mechanically isolating the radiation detector tube from the outer casing, a measuring station and a telemetry link connecting the radiation detector to the measuring station.
Specification