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BLACK COLOUR.
(1) Do the inspection by scanning between 1000 mm and 2000 mm (39.37 in. to
78.74 in.) as perpendicular as possible to the skin (Refer to Figure
1008).
(2) Focus the camera during the inspection period as necessary.
(3) Auto-adjust the camera at least every 2-3 minutes of continuous inspection
following the requirements in paragraph 6.F.
NOTE: In case of findings auto-adjust the camera on the indication when
needed to facilitate indication bordering. Then direct the camera to
T.E. for camera calibration following requirements in paragraph 6.F.
(4) You have only 30 minutes to do the inspection of the elevator. If you need
more time to complete the inspection, repeat the steps from paragraph 5.E.
(5) You must do an inspection of the two elevator panels.
A318/A319/A320/A321
NONDESTRUCTIVE TESTING MANUAL
PART 10 - THERMOGRAPHIC
ALI NO. 55-20-07
Inspection Method
Figure 1008
EFFECTIVITY: A318,A319,A320,A321 55-20-07 Page 1018
Nov 01/07
Printed in Germany
A318/A319/A320/A321
NONDESTRUCTIVE TESTING MANUAL
PART 10 - THERMOGRAPHIC
ALI NO. 55-20-07
EFFECTIVITY: A318,A319,A320,A321 55-20-07 Page 1019
Nov 01/07
Printed in Germany
D. For METHOD B only (blankets)
CAUTION: CHECK THAT GREY INVERTED POLARITY (HOT/BLACK) HAS BEEN SELECTED IN
THE COLOUR SCALE BY LOOKING AT HOISTING POINTS, FASTENERS OR RIB IN
BLACK COLOUR.
CAUTION: START THE THERMOGRAPHIC INSPECTION OF THE LOWER PANEL INMEDIATELY
AFTER THE END OF THE HEAT APPLICATION. THERE IS NO WAITING TIME
NECESSARY FOR THIS PROCEDURE.
CAUTION: THIS PROCEDURE PERMITS THE INSPECTION OF THE UPPER AND LOWER PANELS
AFTER HEATING ONLY THROUGH THE UPPER PANEL. (REFER TO FIGURE 1009 FOR
INSPECTION SEQUENCE).
(1) This inspection is applicable to each of the inspection areas (1 to 3)
after instructions in paragraph 5.F. and 6 are obeyed.
(2) Do a scan of the lower panel inspection area from the T.E. forwards as
shown in Figure 1008, between 1000 mm and 2000 mm (39.37 in. to 78.74 in.)
as perpendicular as possible to the skin. You must overlap scan paths one
after the other. When 2 inspection areas are heated at the same time it is
recommended to do an inspection in sequence as shown in Figure 1008.
(3) Focus the camera during the inspection as necessary.
(4) Auto-adjust the camera before the start each scanning path, include part
of the rib in the viewer to not exaggerate the contrast of the inspection.
NOTE: Auto-adjust the camera over the indication to facilitate indication
bordering. Then come back to the previous auto-adjustment point at
the beginning of the corresponding scanning path, auto-adjust the
camera and continue the inspection.
(5) Do an inspection the lower panel area/s during 10 minutes maximum.
(6) Start the inspection of the upper panel area/s 10 minutes after the end of
heat application.
(7) Scan the upper panel inspection area from the T.E. forwards as shown in
Figure 1008, between 1000 mm and 2000 mm (39.37 in. to 78.74 in.) as
perpendicular as possible to the skin. You must overlap scan paths one
after the other. When 2 inspection areas are heated at the same time it is
recommended to do an inspection in sequence as shown in Figure 1008.
(8) Focus the camera during the inspection as necessary.
A318/A319/A320/A321
NONDESTRUCTIVE TESTING MANUAL
PART 10 - THERMOGRAPHIC
ALI NO. 55-20-07
EFFECTIVITY: A318,A319,A320,A321 55-20-07 Page 1020
Nov 01/07
Printed in Germany
(9) Auto-adjust the camera before the start each scanning path, include part
of the rib in the viewer to not exaggerate the contrast of the inspection.
NOTE: Auto-adjust the camera over the indication to facilitate indication
bordering. Them come back to the previous auto-adjustment point at
the beginning of the corresponding scanning path, auto-adjust the
camera and continue the inspection.
(10) Do an inspection of the upper panel areas during 10 minutes maximum.
(11) Total time for the inspection must not be more than 20 minutes. Repeat
from paragraph 5.F. if necessary to complete the inspection.
NOTE: Inspection areas 2 and 3 must always be heated together although
just one of these areas is to be re-inspected.
E. For METHOD C only (refrigerator)
CAUTION: START THE THERMOGRAPHIC INSPECTION 8 MINUTES AFTER THE END OF COLD
APPLICATION.
CAUTION: CHECK THAT GREY POLARITY (COLD/BLACK) HAS BEEN SELECTED IN THE COLOUR
SCALE BY LOOKING AT HOISTING POINTS, FASTENERS OR RIB IN BLACK
COLOUR.
(1) Clean the condensation from the skin with a clean tissue. Do not touch the
elevator skin with your hands.
(2) Do the inspection by scanning between 1000 mm and 2000 mm (39.37 in. to
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