Abstract: A compact portable wastewater treatment apparatus for treating oil contaminated waste water having a support structure with a containment tank on said support structure for receiving waste water. A mixing means on the support structure is also provided for mixing the waste water with a desired amount of materials to form a flocculent with the oil of the oil contaminated waste water. Furthermore, filters are included on the support structure for filtering the flocculent from the waste water with a pump structure for transporting the waste water within the system.

Abstract: A method of preparing a fluorescent magnetic composition useful in non-destructing testing of metal work pieces. The method of the invention utilizes a plasticizer in order to effect a more complete encapsulation of fluorescent pigment and magnetic particle powder by film-forming resin. The invention also provides for the composition made by the inventive method, as well as for the method of using the composition in non-destructive testing of magnetizable work pieces.

Abstract: A dry magnetic particle bath for non-destructive testing of a magnetizable workpiece to detect flaws comprising magnetic particles, a modified dextrose adhesive, and a carrier powder. In certain other embodiments of the invention the magnetic particle bath is instead a wet bath comprising water, magnetic particles, and modified dextrose. According to the invention, the wet bath can also contain an anti-freeze component consisting essentially of urea and ethylene glycol, glycerine or monoethanolamine to depress the freezing point of the water bath to 10.degree.-15.degree. F.; the invention encompasses wet bath formulations which contain the anti-freeze component in combination with adhesives other than modified dextrose.

Abstract: An eddy current testing system is disclosed in which a pair of thin one-layer windings are disposed against a pair of thin plates of high permeability magnetic material, about aligned openings in the plates through which a wire is passed, pits and inclusions in the wire being detected by comparing signals corresponding to the electrical impedances on the two windings. The plates of high permeability magnetic material operate to concentrate magnetic flux in small regions of the wire, to obtain a high resolution.

Abstract: Methods and apparatus are disclosed for processing of steel billets or the like to remove surface defects. A material-removing device such as a grinding wheel is automatically controlled to initiate removal of material at points where defects have been detected and to continue removal of material as long as cracks or other defects continue to be detected. In certain disclosed embodiments, an inspection is performed using magnetic particle or other inspection equipment, the initial removal of material being controlled therefrom. Thereafter, material-removal is controlled from signals produced by a probe which is carried in the removal device or adjacent thereto. In other disclosed embodiments, a thin layer of material is removed to permit detection of defects by a probe, the material-removal being both initiated and continued under control of probe signals.

Abstract: A system is disclosed in which a defect-indicating material is applied to the surface of a part which is scanned by a laser beam or by use of a television camera to develop electrical signals indicating defects. A comparison arrangement is provided for developing output signals only when signals are developed from the same portions of the scanned region during two scans, and a blower is provided for displacing extraneous elements between scans.

Abstract: Apparatus for grinding and simultaneously testing steel billets or other parts to remove portions which contain defects. The defects are detected by a probe which engages the part at a point in proximity to the portion engaged by a grinding wheel. Preferably, the probe is carried in an opening provided in the surface of the grinding wheel and is electrically connected through a rotary coupling device to indicating apparatus. A probe may be a magnetic probe, either an eddy current or leakage field probe, or may include means for detecting light or other radiant energy reflected from the surface of the part. The apparatus is adaptable for the automatic control of the grinding operation.

Abstract: A probe utilizing electrical fields for nondestructive testing of metals is disclosed which is mounted in a hand-held portable housing, or head, having limit switches therein for restricting up and down movement of the probe. Apparatus for selectively engaging the limit switches by the probe driving mechanism, without injury to the internal parts of the head, is also disclosed. The head may be equipped with a slip ring extender also, to enable an operator to use the head in a variety of positions, and the depth setting mechanism for the probe is protected against inadvertent movement during continued usage of the head.

Abstract: Magnetizing current supplies are disclosed for supplying current for magnetizing parts in a magnetic particle inspection system, including SCR's connected in circuit with a three-phase voltage step-down transformer to accurately control the duration and magnitude of magnetizing current. In one type of supply, six SCR's are connected between magnetizing apparatus and terminals of three center tapped secondary windings of a three-phase voltage step-down transformer, the SCR's being operable to rectify current and also being connected to a phase control circuit which controls firing times of all SCR's to control the magnitude of the magnetizing current.

Abstract: A device is disclosed which includes a camera pig and a tow pig having an articulated connection therebetween to permit movement through pipe bends. The tow pig includes a syphon device for projecting liquids upwardly and forwardly and also includes a compressor and a desiccant chamber for drying of gas which is injected into a camera space between cups of the camera pig. A flow path is provided through the camera pig which by-passes the camera space, for maintaining a passive environment therein.

Abstract: A method and composition for non-destructive testing of magnetizable workpieces such as steel billets. A dry dispersion of ferromagnetic particles in combination with a fluorescent pigment and a water soluble carrier are deposited on the workpiece which is simultaneously or thereafter magnetized. The magnetizable particles are attracted to surface imperfections by the action of the magnetic field and become clustered therein to form indications. The indications are fixed more firmly to the piece by applying an aqueous spray, consisting either of a water mist or steam which activates the water soluble carrier so that upon drying, the indications remain firmly attached to the workpiece. Subsequent examination of the workpiece under ultraviolet irradiation enables the inspector to determine the extent and the location of the flaws.

Abstract: An indicating system is disclosed for use with nondestructive testing systems of various types including an eddy current instrument in which the characteristics of a specimen structure are indicated by the form, position and dimensions of a trace on a screen. The system indicates whether or not the relationship of two test signals is within certain limits which can be shown in the form of outlines or a series of contiguous boxes on a screen. Prior to the testing of a structure of unknown characteristics, such limits may be learned or recorded by the system either during the manual manipulation of a joystick control or the like or during the testing of a structure of known or standard characteristics.

Abstract: Pipeline inspection apparatus is provided including a camera unit and associated illumination means, preferably a strobe flash unit, for recording on photographic film the rectangular images corresponding to generally rectangular internal surface portions of a pipe for detection of defects, a viewing axis of the camera being normal to the axis of the pipe. Weight means are provided for operating in a manner such as to establish a viewing axis in predetermined angular relation to a vertical plane through the axis of a horizontal pipe. In one embodiment, the device is supported by resilient cups for movement through the pipe and the entire device is rotatable under the influence of the weight means. In another embodiment, at least the optical portion of the camera unit is rotatably supported and connected to the weight means. Magnetic flaw detection means are provided for triggering the camera unit.

Abstract: This invention relates to apparatus for photographic inspection of the interior of a pipeline and more particularly to apparatus which includes an optical port wiper which makes it possible to obtain clear and accurate photographs under adverse environmental conditions. The apparatus is highly effective and reliable while being comparatively simple and readily and economically manufacturable.

Abstract: Method and composition for non-destructive testing of a magnetizable workpiece wherein the surface of the workpiece is treated with an aqueous emulsion of a waxy solid having fluorescent magnetizable particles suspended therein, a magnetic field is created along the workpiece so that the magnetizable particles are attracted to imperfections therein, and then sufficient water is removed from the emulsion so that the waxy solid forms a film which contains the immobilized fluorescent particles which have become attached to imperfections in the workpiece. The film may be further protected by the application of finely divided abrasion resistant particles, such as glass beads or glass powder.

Abstract: A method and composition for non-destructive testing using the dye penetrant technique, and adapting the use of this technique at high temperatures. The invention is involved with using a marking crayon which includes a carrier composed of a solid which melts at a temperature below the temperature at which the workpiece is to be inspected and a visible or fluorescent dye. Upon application of the crayon to a hot workpiece, the solid penetrant composition becomes molten and the visible or fluorescent dye penetrates into any flaws in the surface in the usual manner. A remover, also consisting of a crayon composition, is used to remove excess penetrant, leaving only penetrant entrapped in the flaws. Upon removal of the excess penetrant and remover, the entrapped penetrant deposits are drawn to surface by the application of a finely divided developer either in dry form or as an aerosol. Inspection of the piece is then carried out under visible or ultraviolet light, depending upon the nature of the penetrant.

Abstract: An eddy current type of nondestructive testing instrument is disclosed in which the operating frequency is automatically adjusted in accordance with a comparison of output signals obtained in scanning operations in which the frequency is adjusted over its range. The system may be used, for example, in providing lift-off compensation for conductivity measurements or flaw detection or it may be used for sorting of parts of different characteristics.

Abstract: A method and composition for non-destructive testing of a magnetizable workpiece in which the surface of the workpiece is coated with a composition containing discrete magnetic particles consisting of a ferromagnetic particle core, fluorescent pigment particles attached to said core and a cascading opacifier combined therewith, preferably by means of a film-forming encapsulating resin. The particles of the daylight fluorescent pigment are sufficiently large so that they fluoresce with sufficient intensity to be seen in normal lighting conditions. Consequently, the magnetizable pieces to be inspected can be simultaneously inspected under ultra-violet and white light excitation to reveal both fine cracks and large voids.

Abstract: Method and composition for detecting flaws in a magnetizable workpiece such as a steel billet in which the workpiece is first heated to a temperature of at least 140.degree. F. (60.degree. C.) in a hot water bath, the heated workpiece is removed from the bath and then magnetized either before or after the application of an indicating composition. In accordance with the present invention, the composition includes ferromagnetic particles, a fluorescent pigment and a water compatible adhesive. The flaws in the workpiece, particularly at seams, cause clusters of the indicating composition to remain to the magnetized piece where they are readily visible to an inspector.

Abstract: Method and composition for detecting flaws in a workpiece utilizing either white light or ultraviolet light wherein a penetrant solution is applied to the surface of the workpiece, the penetrant solution containing a rhodamine dye dissolved in a solvent, the dye possessing an inherent color and being capable of fluorescing under the influence of ultraviolet light. The excess penetrant is removed from the surface in accordance with usual practice, while leaving penetrant entrapped in any surface flaws. An improved developer is applied to the surface, the developer consisting of a suspension including a finely divided developer powder suspended in the same dye solvent as in the penetrant in a sufficient amount to lower the concentration of rhodamine dye in the entrapped penetrant below that at which quenching of fluorescence occurs. The indications thus produced under both visible light and ultraviolet light are distinct and non-blurring, enabling the piece to be inspected under either type of light source.