____ Subtask 20-28-00-912-057
B. Bonding of Fuel Pipes (Light Alloy and Stainless Stell) Dia less than or equal to 3/4"
(1) Attach the pipes to the structure with the bonding clamps.
Bonding of Fuel Lines (Dia. more than 3/4")
Figure 210/TASK 20-28-00-991-006
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Subtask 20-28-00-912-060
C. Bonding of Pipes to Pipes with Clamps or with Bonding Lugs (in the tanks and in the wings) (Ref. Fig. 211/TASK 20-28-00-991-016)
(1) Assemble the clamps (3) and the bonding straps (1), the attachments (5), the lugs (4) on the pipes (2).
NOTE : The clamps are in the same material as the pipes.
____
(2) Seal the attachments (5)
(a)
Apply SEALANTS (Material No. 09-001) in the tanks if you do not remove the attachment frequently.
(b)
Apply SEALANTS (Material No. 09-007) on the wing if you remove the attachment frequently.
NOTE : Do not seal the attachments on the stainless steel clamps
____
unless they are in the tanks.
(3) Make sure that the surfaces without protection are fully sealed. Subtask 20-28-00-912-061
D. Bonding of Pipes to Pipes with Fixed or Movable Clamp Blocks (in the tanks and in the wings). (Ref. Fig. 212/TASK 20-28-00-991-014)
(1)
Install a bonding strip (1) (thickness: 0,1 mm, width: 12,7 mm) between the fixed (2) and the mobile (3) clamp.
(2)
Connect the strip (1) to a bonding strap (4) with an attachment (6) or a clamp (3) (the bonding strap will be attached to the structure) or to an attachment (5) or a fixed clamp (5).
(3)
Assemble the pipes (7) in the clamps (1) or (2).
NOTE : Do not twist the bonding strap.
____
Pipe-to-Pipe Bonding With Clamps or Bonding Lugs (In the Tanks and in the
Wings)
Figure 211/TASK 20-28-00-991-016
Pipe to Pipe Bonding in the Tanks and in the Wings with Fixed or Movable Clamp
Blocks
Figure 212/TASK 20-28-00-991-014
Subtask 20-28-00-912-062
E. Bonding with a Stainless Steel Clamp of a Removable Pipe Assembly in the Tanks. (Ref. Fig. 213/TASK 20-28-00-991-024)
(1)
Assemble the pipes (3) on the stainless steel clamp block (1) with the attachment (2) on the light alloy structure (4).
(2)
Seal the attachment(2) with SEALANTS (Material No. 09-007).
(3) Make sure that the surface is fully sealed. Subtask 20-28-00-720-091
F. Make sure that the ohmic resistance is correct. (Ref. TASK 20-28-00-869-002)
5. Close-up
________ Subtask 20-28-00-942-107
A. Make sure that the work area is clean and clear of tool(s) and other items.
Bonding with a Clamp of a Removable Assembly of a Pipe in the Tanks
Figure 213/TASK 20-28-00-991-024
TASK 20-28-00-912-007
Electrical Bonding of Composites
WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL MATERIALS
_______ ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
1. Reason for the Job
__________________
The purpose of the bonding of composites is to make a path for electrostatic
charges to metal surfaces.
This procedure gives bonding principles and examples.
2. Job Set-up Information
______________________
A. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 11-004 USA MIL-T-81533 1.1.1TRICHLOROETHANE (METHYL CHLOROFORM) (Ref. 20-31-00)
Material No. 19-003 USA AMS 3819 LINT-FREE COTTON CLOTH (Ref. 20-31-00)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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