1. How to locate leaks on wing tanks with the Hydrogen Method Mikael Ekström norm electronics 18 Voulis st. 10563 Athens Greece (T) 210 3237698, 2103234988 (F) 2103237780 www.norm.gr sales@norm.gr

2. Leak locating on wing tanks— 2 All rights reserved © 2007, Alcatel·Lucent Leak locating on wing tanks › Fuel leaks are often discovered by visual inspection › Leaks appear in channels in the sealant which means the leak entry point (where you repair) can be far away from the leak exit point (where you spot the leak) › Backtracing the leak from exit point to entry point is possible when using hydrogen tracer gas (5%H 2 /95%N 2 ) › Adixen supplies everything between the leak and the gas bottle to pin-point the leak origin and to verify the quality of the repairs. › Leak locating can be performed by one man alone › It cuts mean time to repair in half norm electronics www.norm.gr

3. Leak locating on wing tanks— 3 All rights reserved © 2007, Alcatel·Lucent Steps to locate leaks with the H 2 method 1. Have the right equipment › Ex-certified Hydrogen Leak Detector EXTRIMA › Gas injection tools to suit the leak exit on the aircraft skin › Injection Pads – for plain surfaces › Injection Fix Kit – for uneaven surfaces › Injection Panel – for controlled tracer gas injection › Gas bottle with H 2 5%/N 2 95% tracer gas › Repair kit norm electronics www.norm.gr

4. Leak locating on wing tanks— 4 All rights reserved © 2007, Alcatel·Lucent Steps to locate leaks with the H 2 method 2. Fasten the gas injection tool over the leak exit Clear surface with isopropyl alcohol or similar Fasten the Injection Pad or Injection Fix Kit Let set for 10 minutes norm electronics www.norm.gr

5. Leak locating on wing tanks— 5 All rights reserved © 2007, Alcatel·Lucent Steps to locate leaks with the H 2 method 3. Connect the gas IMPORTANT! Read User’s manual for all steps 1,5 bar norm electronics www.norm.gr

6. Leak locating on wing tanks— 6 All rights reserved © 2007, Alcatel·Lucent Steps to locate leaks with the H 2 method 3. Connect the gas IMPORTANT! Read User’s manual for all steps norm electronics www.norm.gr

7. Leak locating on wing tanks— 7 All rights reserved © 2007, Alcatel·Lucent Steps to locate leaks with the H 2 method norm electronics www.norm.gr

8. Leak locating on wing tanks— 8 All rights reserved © 2007, Alcatel·Lucent Steps to locate leaks with the H 2 method 4. Locate the leaks with Hydrogen Leak Detector Extrima from inside the wing tank 5. Repair the leak (or leaks) and verify it with Extrima Leak point on skin Leak origin norm electronics www.norm.gr

9. Leak locating on wing tanks— 9 All rights reserved © 2007, Alcatel·Lucent aircraft leak tested with H 2 norm electronics www.norm.gr

10. www.adixen.com norm electronics 18 Voulis st. 10563 Athens Greece (T) 210 3237698, 2103234988 (F) 2103237780 www.norm.gr sales@norm.gr