CCH 70-3 PDF

Maukinos The abacus screen remains valid only if probesof the Same type have similar characteristics. The recommended frequency is2 MHz. R Height of the reference curve at theSame depth. All these xch should be made for each generator: This demarcation is made with the Same probe or with a similartype probe in the Same Operating conditions used to detect the defect. Cch 70 3 — Talk Vietnam The costs will be spread in accordancewith 5.

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Kigalmaran By continuing to use this website, you agree to vch use. The surfaces to be inspected on steel Castings must be such that the couplants between the probe and the part will not have a significant influence on the sensitivity of the examination. Table 3 Sets for both the DAC and AVG methods, the classes of quality 1to 6 in Order of decreasing severity, the notation threshold, the area of consideration of the cch and the attenuation of the back echo. For calibrations only the distances between multiple echoes or between two echoes corresponding distant reflectors of aknown value may be used and not the distance between the pulse transmission and the first echo.

It allows a deeperdetection depending ofthe dimensions of the discontinuities. Posted November 5, by technospub in Uncategorized. For an examination under whitelight the area examined must be lit with natural or artificial lighting corresponding to at least Iux. As chc reference, the above example contains 6 indications, all taken into consideration.

Then the part will be immediately dried with a dry, clean and lint free rag. Lighting should be ccch than Lux. In the biggest triathlon of the year, Van Berkel, who ranked second in the race last year, clocked three hours For each new Position ofthe probe, the Position of the beam axis is marked; the outline obtained by joining the Positions of the beam axis defines theS surface of the defective area. The examination is made afterapplication of a coat of developer, suspended in a liquid.

KeywordSpy — Forbidden The excessofpenetrant will be washedofand the Part dried. Every apparatus must havea labe1 indicating the date of calibration validity. The Operator manually shifts the probe by applying it on the surfaceto be inspected which is coveredwith couplant contact technique.

If a confirmative radiographicinspection is forseen, radiography will only be carried out in case the results obtained by ultrasonics do not conform with the specified criteria and thus do not permit an evaluation of the acceptability of the indication. Cahier des Charges Hydrauliques. It isthe smallest of the two axes of the elliptical sonic field. CCH EN These magneticpowders exist in two types: The real conditions of magnetization can onlybe verified by meansof a Hall probe to measure the tangential magnetic field.

The abacus screen remains valid only if probesof the Same type have similar characteristics. Howerer, the Designer may recommend that any repairs be inspected as much as possible, so that repairs by welding be inspected using transversewave probes See Part 2 of the specification. To find out more, including how to control cookies, see here: The indications given are in no way intended to serve as a rule, neither for the mechanicaltesting conditions nor for thechoice of the non-destructive testing method to be applied.

As developer, a suspension ofpowder in a solvent is used. The extent of defect is expressed as a percentage ofthe reference amplitude. The surfaces to be inspected must be free of rust, scales, weld spatter or other irregularities whichwould interfere with the transmission of ultrasonic waves or the movement of the probe.

Czech Radka Vodickova finished second with a time in 4hr 46sec, while Liz Blatchford ranked third after finishing in 4hr 19min 46sec.

See PT Paragraph 4. It may howeverbe applied at earlier Stages, especially for theinspection of excavations. The recommended frequency is2 MHz. Theproducts used must meet the requirements of National legislation with regard to the environment.

This is the fourth time the race has been held. During these adjustments the intensity must be maintained as low as possible, the height adjustment of the reference echoes is obtained only through the adjustment of amplification. The converging ccj of these probes with separate transmitter and receivermust be adapted to the inspection to be performed. R Height of the reference curve at theSame depth. These devices must be ccch periodically in Order to make Sure that they can lift a ferritic mass of 4.

In the absenceof specific indications, a Standard longitudinal wave probe will be used. Theway, therelativePositionof corresponding reflector. The demarcation between superficial and median areas is not always clearly defined when the Casting is of complex shape. Regardless of the process or processesChosen by User, their efficiency will have to be demonstrated. TOP Related.

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CCH 70-3 PDF

Kigalmaran By continuing to use this website, you agree to vch use. The surfaces to be inspected on steel Castings must be such that the couplants between the probe and the part will not have a significant influence on the sensitivity of the examination. Table 3 Sets for both the DAC and AVG methods, the classes of quality 1to 6 in Order of decreasing severity, the notation threshold, the area of consideration of the cch and the attenuation of the back echo. For calibrations only the distances between multiple echoes or between two echoes corresponding distant reflectors of aknown value may be used and not the distance between the pulse transmission and the first echo.

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cch 70 3 standard pdf

Kagagami The outline ofthe defect defines the surface S of this defect; the length of the defect is the largest dimensionof the whole defect. The magnetic powder spread over thearea should be made up of a fine coating by adequate meansduring magnetization. Every verification is considered adequate ifthe drift noted stay smaller as k 2 dB. The degree of the indication is expressed in equivalent diameter 1. The Designer decides to either: These processes are not equivalent to each other with to: On this occasion, any useful information shouldbe transmitted to the party concerned. If complementary inspections are decided by such an agreement they will only have an informative value or will be the subjeet of an amendement to the Order. T0 insure that all orientation discontinuities are detected, it is necessary to use at leasttwo directions of magnetization which should preferably be perpendicular to cc other.

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