KROT X-85

Crawler KROT - is reliable, microprocessor-controlled crawler trolley IRIS, produced by company IPSI (France) with X-ray unit of constant potential installed on it. The crawler could be completed with gamma-emitting isotope having the motor-injector built-in.

Crawlers of KROT series move inside the pipe with speed of up to 16 m/min to the distance of up to 2 kilometers and provide the efficient inspection of the tubes with diameter from 150 to 1850mm. The wide working range of environmental temperatures and waterproof design allow the application of this instrument in different climate conditions. Thanks of independent motors of fore and rear wheels the unit has a high passing ability; it can overcome those pipeline sections that have steep slopes and minor turn radiuses. The system of emergency return forces the crawler to return back to the start point when there is a threat of storage battery discharge or in case of receiving the alarm signal; thereby preventing from the loss of the unit inside the pipeline.

Sealed lead acid batteries don’t require any maintenance and don’t release any harmful gases. Special device prevents from the complete discharge of the batteries, protecting them against the failure. The automatic charger ensures the quick and complete charge of the batteries with pulse current; which prolongs their service life.

Modern high-frequency X-ray unit of constant potential provides the high-quality radiograph picture at the little time period of exposure.

The instrument is controlled by radio-isotopic or magnetic bench-marks.
Model Х-85 is designed for the in-pipe panoramic radiography of the welds in the pipelines of big diameters in field conditions. The optimum thickness of the pipe wall of diameter is not more than 45mm. When using the FOSFOMATIC system or high-speed films type KODAK HS800 or intensifying screens it is possible to inspect pipelines with pipe walls of bigger thickness. The model is completed with gasoline generator, which allows the operation of high power capacity X-ray units and the radiographic inspection of bigger quantity of joints per one diagnostics session.

Technical characteristics:

Minimum diameter of the pipes: 300 mm
Maximum diameter of the pipes: 1500 mm
Type of the control: magnetic or isotopic
Full weight: 99 kg (with storage batteries and gasoline generators)
Length without X-ray unit: 2700 mm (with storage battery)
Speed: up to 13 m/min
Admissible slope of movement: 40% - 22.2º
Admissible pipe bend:10d
Working range of temperatures-40ºС … +80ºС
Type of the trolley storage batteries: lead
Storage battery capacity of the trolley: 24V 36A/hour
Type of the X-ray unit storage batteries: lead
Autonomous distance: 2 km
Braking accuracy: ± 5 mm
Exposure time:0 – 999 sec.
Exposure delay:0 – 30 sec.

Compatible X-ray units: MCT, ICM

Maximum voltage of the tube: up to 360 kV
Maximum anode current of the tube: up to 6 mA
Maximum power on the anode of the tube:900 W
Maximum weight of the unit: up to 50 kg
Data could be changed without notification.

NEW TECHNOLOGIES: Crawler “KROT” + Technology “FOSFOMATIC"

- THE COMBINATION OF UP-TO-DATE TECHNOLOGIES ENSURES THE BREAKTHROUGH IN THE ORGANIZATION OF PIPELINES INSPECTION

- FLEXIBLE REUSABLE ROLL PHOSPHOROUS PLATES REPLACE RADIOGRAPHIC FILMS

- EXPOSURE TIME OF ONE JOINT IS 10 TIMES LESS THAN WHEN USING RADIOGRAPHIC FILMS

- THE CRAWLER BATTERY IS 3 TIMES LIGHTER THAN WHEN USING ANY STANDARD TECHNOLOGY

- QUANTITY OF JOINTS, RADIOGRAPHICALLY INSPECTED PER ONE SHIFT IS SIGNIFICANTLY HIGHER

- COMPLEX OF DIGITAL RADIOGRAPHY “FOSFOMATIC” ENSURES QUICK READING OF THE RADIOGRAPHIC PICTURE AND ITS FILING: EXPOSED PLATE COULD BE READ QUICKER THAN PER 1 MINUTE

- HIGH SENSITVITY OF THE COMPLEX “FOSFOMATIC” ALLOWS THE INSPECTION OF MORE THAN 100 JOINTS IN THE PIPELINES WITH WALL THICKNESS, EXCEEDING 30 MM WITHOUT ANY ADDITIONAL CHARGING OF CRAWLER BATTERY, AS WELL AS THE REDUCTION OF THE BATTERY WEIGHT.

- RADIOGRAPHIC CRAWLER “KROT” WITH LIGHTWEIGHT BATTERY OF X-RAY UNIT ALLOWS THE EFFICIENT AND QUICK INSPECTION OF THE PIPELINES OF PRACTICALLY ALL DIAMETERS.

References to the additional information:
Description of crawler KROT Х-85