GLM Chassis Cleaning Proposal
1
ATC CLEANTEC SDN BHD
Cleaning Proposal
Precleaning
(ATCSF)
Assembly
(Customer)
Post Cleaning
• Only identified parts to be cleaned before riveting
• Cleaning method: Ultrasonic degreasing/ acid immersion (not advisable if part engraved with silkscreen/ laser engraving as it will be removed by acid) /
Ultrasonic hot DI water
• Pack in controlled environment with vacuum packing
• Ship parts to customer after cleaning for assembly
• Clean highlighted surfaces (Blue) before riveting to ensure no dirt, stain, or any particles are trapped between mating surfaces during fabrication
• Install all third party hardware i.e. clinch nuts & captive screws (hardware are advisable to send for PRECLEANING, to minimise contamination on cleaned
parts)
• Carried out in controlled environment
• Ship parts for post cleaning after riveting & welding has taken place
• Inspect parts for any signs of dirt, stain or particles after fabrication
• Cleaning method: Ultrasonic hot DI water in cleanroom 1000
• Cleanliness requirement: no particles, or UV stains
• Pack in cleanroom 1000, vacuum pack
(ATCCT)
2
ATC CLEANTEC SDN BHD
Process Control
Precleaning
•No stain found under UV light after cleaning
•Particles are allowed since pack in controlled environment (will be removed during post cleaning)
(ATCSF)
Assembly
(Customer)
•Components shall not be left to dry with residual working fluids, debris, or powders. Intermittent cleaning or storage in water shall be performed as
necessary to comply with cleanliness requirement
•Components shall be free from all powder, debris, and residual working fluids that are either water soluble or water miscible
•Components shall be cleaned with a suitable degreaser and rinsed to remove all residual metal working fluids that are not water soluble
•Hardware shall go for cleaning before being used for installation
•Handled with cleaned gloves for the entire assembly process
•No particles, or stains found under UV light
Post Cleaning
(ATCCT)
3
ATC CLEANTEC SDN BHD
*Process control
for precleaning
and assembly are
important for
post cleaning in
order to achieve
final cleanliness
requirement.
*Any stubborn
dirt or stain found
before post
cleaning shall
return for
recleaning