A gauge is provided for measuring one or more characteristics of a construction material such as a road surface. The gauge includes a detector, a base that carries the detector, and a source housing carried by the base and defining a shield material circumferentially extending inwards. A source rod is positioned within the housing and carries a source that is translatable between a shielded position within the housing and a measuring position external of the housing. The source rod has a source shield on the top thereof and a shield material spaced-downwardly from the source such that the source is completely enclosed when contained within the base.

Methods, systems, and computer program products for determining a property of construction material. According to one aspect, a material property gauge operable to determine a property of construction material is disclosed. The gauge may include an electromagnetic sensor operable to measure a response of construction material to an electromagnetic field. Further, the electromagnetic sensor may be operable to produce a signal representing the measured response by the construction material to the electromagnetic field. An acoustic detector may be operable to detect a response of the construction material to the acoustical energy. Further, the acoustic detector may be operable to produce a signal representing the detected response by the construction material to the acoustical energy. A material property calculation function may be configured to calculate a property value associated with the construction material based upon the signals produced by the electromagnetic sensor and the acoustic detector.

The present invention is related to technologies used to inspect flexible undersea pipes, in particular to detect flooding of the annular space in said pipes. The present invention discloses a device for detecting annular flooding with gamma transmission in a flexible pipe, comprising a structure (07), in which said structure (07) contains in its interior, a first pressure vessel (10) containing an encapsulated radioactive source (03) in its interior, a second pressure vessel (11) containing radiation sensors (04) in its interior, and a third pressure vessel (12), containing electronic means for collecting and amplifying signals (05) in its interior, in which said radiation sensors (04) are connected to the electronic means (05) for collecting and amplifying signals using an internal cable (13). The present invention also discloses a unit for detecting annular flooding with gamma transmission in a flexible pipe based on the gamma transmission technique, comprising a device (50) for detecting annular flooding with gamma transmission in a flexible pipe (01) coupled to an ROV (02), in which coupling occurs through a control arm (08) of the ROV (02), and the device is controlled and operated exclusively via the umbilical cable (06) connected to the ROV (02), and a method for detecting annular flooding with gamma transmission in a flexible pipe.

A method of inspecting a separation vessel may utilize off axis gamma scanning. During scanning, a gamma radiation source can emit gamma radiation through a separation vessel toward a detector, and the detector can detect radiation emitted by the gamma radiation source and passing through the separation vessel. The gamma radiation source may be positioned at a first vertical elevation along the separation vessel and the detector positioned at a second vertical elevation along the separation vessel different than the first vertical elevation. As a result, a radiation path may be defined between the gamma radiation source and the detector that transects the separation vessel at a non-zero degree angle with respect to a horizontal plane.

Some embodiments include a radiographic inspection system, comprising: a drive mechanism configured to move along a structure; a detector attached to the drive mechanism; a radiation source attached to the drive mechanism and positionable relative to the detector such that a width of the structure casts a radiation shadow on an active area of the detector; and control logic coupled to the detector and configured to: receive an image from the detector; generate side wall loss information based on the image; and generate bottom wall loss information based on the image.

A shielded X-ray radiation apparatus is provided comprising an X-ray source, an X-ray attenuation shield including an elongate cavity to house the X-ray source and incorporating a region to accommodate a sample, a neutron attenuation shield, and a gamma attenuation shield. The neutron attenuation shield is situated adjacent to and substantially surrounds the X-ray attenuation shield and the gamma attenuation shield is adjacent to and substantially surrounds the neutron attenuation shield. In some embodiments a removable sample insertion means is provided to insert samples into the elongate cavity and which is composed of adjacent blocks of material, each respective block having a thickness and a composition which substantially matches the thickness and a composition of one of the X-ray attenuation, neutron attenuation and gamma-ray attenuation shields.

Methods, systems, and computer program products for determining a property of construction material. According to one aspect, a material property gauge operable to determine a property of construction material is disclosed. The gauge may include an electromagnetic sensor operable to measure a response of construction material to an electromagnetic field. Further, the electromagnetic sensor may be operable to produce a signal representing the measured response by the construction material to the electromagnetic field. An acoustic detector may be operable to detect a response of the construction material to the acoustical energy. Further, the acoustic detector may be operable to produce a signal representing the detected response by the construction material to the acoustical energy. A material property calculation function may be configured to calculate a property value associated with the construction material based upon the signals produced by the electromagnetic sensor and the acoustic detector.

The present invention is related to technologies used to inspect flexible undersea pipes, in particular to detect flooding of the annular space in said pipes. The present invention discloses a device for detecting annular flooding with gamma transmission in a flexible pipe, comprising a structure (07), in which said structure (07) contains in its interior, a first pressure vessel (10) containing an encapsulated radioactive source (03) in its interior, a second pressure vessel (11) containing radiation sensors (04) in its interior, and a third pressure vessel (12), containing electronic means for collecting and amplifying signals (05) in its interior, in which said radiation sensors (04) are connected to the electronic means (05) for collecting and amplifying signals using an internal cable (13). The present invention also discloses a unit for detecting annular flooding with gamma transmission in a flexible pipe based on the gamma transmission technique, comprising a device (50) for detecting annular flooding with gamma transmission in a flexible pipe (01) coupled to an ROV (02), in which coupling occurs through a control arm (08) of the ROV (02), and the device is controlled and operated exclusively via the umbilical cable (06) connected to the ROV (02), and a method for detecting annular flooding with gamma transmission in a flexible pipe.

Described are system and method embodiments for measuring a thickness of a material layer using electromagnetic radiation. In some embodiments, a system includes a radiation source configured to direct first radiation towards a first surface of a layer of material having a thickness between the first surface and a second surface opposite the first surface. The first radiation causes the material layer to emit secondary radiation. A filter is positioned between the material layer and a radiation detector and in the beam path of the second radiation in order to attenuate a portion of the second radiation associated with fluorescence of the material to emit third radiation. Then, the radiation detector is configured to detect the third radiation and a controller is configured to provide a measurement corresponding to the thickness of the material layer based on the detected third radiation.

A nondestructive inspection apparatus makes a neutron beam incident on an inspection target, detects a specific gamma ray deriving from a target component in the inspection target, among gamma rays generated by the neutron beam, and determines a depth at which the target component exists, based on a result of the detecting. The nondestructive inspection apparatus includes a neutron source that emits a neutron beam to a surface of the inspection target, a gamma ray detection device that detects, as detection intensities, intensities of a plurality of types of specific gamma rays whose energy differs from each other, and a ratio calculation unit that determines a ratio between the detection intensities of a plurality of types of the specific gamma rays.