(3)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
TASK 51-78-00-200-001
Inspection after Mercury Spillage
WARNING : ALWAYS SUPPLY SUFFICIENT VENTILATION WHILE YOU CLEAN AREAS WHERE
_______
THERE IS MERCURY CONTAMINATION.MERCURY VAPORS ARE TOXIC.
WARNING : DO NOT TRY TO COLLECT MERCURY BY HAND.
_______
WARNING : DO NOT BREATHE MERCURY VAPORS.THE AIR FROM THE VACUUM CLEANER
_______ CONTAINS MERCURY VAPORS COLLECTED DURING CONTACT WITH THE MERCURY DEPOSITED IN THE GLASS CONTAINER.
WARNING : DO NOT USE THE AIR HOSE TO REMOVE MERCURY FROM THE AIRCRAFT.
_______
1. Reason for the Job
__________________
You must do the inspection when mercury is spilled in the cargo compartment. Mercury and mercury compounds, are heavily corrosive on a wide range of metallic materials, especially on aluminum alloys. When mercury is spilled in the aircraft there is a high risk of serious damage to the structure. Corrosion caused by spilled mercury can destroy a large area, although only
R a small amount of mercury is spilled. Heavy destruction can occur within a R few hours.
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific air compressor
No specific battery water rubber-syringe
No specific cardboard
No specific cellulose tape
No specific glass fiber sheets
No specific medicine dropper
No specific mercury sniffer
No specific paper trough
No specific portable X-ray equipment
No specific safety barriers
No specific soap
No specific vacuum cleaner
No specific warning notice
No specific woods
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 52-30-00-860-003 Open the FWD or AFT Cargo-Compartment Door with the
Hand Pump 53-22-14-000-001 Removal of the FWD Cargo-Compartment Floor-Panels 53-22-14-400-001 Installation of the FWD Cargo-Compartment
Floor-Panels 53-42-14-000-001 Removal of the AFT Cargo-Compartment Floor-Panels Zone 150 53-42-14-400-001 Installation of the AFT Cargo-Compartment
Floor-Panels Zone 150 SRM 51220000 SRM 53020002
3. Job Set-up
__________
Subtask 51-78-00-941-055
A. Safety Precautions
(1)
Put the safety barriers in position.
(2)
On the panel 2020VU put a warning notice to tell persons to keep out of the work areas.
Subtask 51-78-00-010-054
B. Get Access
(1) Open the cargo compartment doors 825 and 826 (Ref. TASK 52-30-00-860-001).
Subtask 51-78-00-869-050
C. Ventilation of the Cargo Compartment
(1) Blow clean filtered air from an air compressor through the cargo compartment, as follows:
(a) Put the air compressor near the aircraft.
1EFF : ALL 1 51-78-00Page 716 1 1 Nov 01/04R 1 1 1CES 1
(b)
Put the end of the air compressor supply hose into the compartment through the door.
(c)
Start the air compressor and make sure that the air flows through the cargo compartment.
4. Procedure
_________ Subtask 51-78-00-615-050
A. Cleaning of the Contaminated Area
(1)
Mark the area that is contaminated by mercury spillage.
(2)
Isolate the contaminated area, do not let mercury spread from the contaminated areas to the clean areas. Do not walk through or move parts from the contaminated area into the clean areas of the aircraft.
(3)
Do not touch the surfaces that you suspect of contamination. Use woods and glass fiber sheets to support your body while you work on the contaminated area.
NOTE : Do not use contaminated protective clothing in clean areas.
____
(4) Remove mercury spillage as follows:
(a)
Collect all the visible mercury with a cardboard or a paper trough.
(b)
Collect the mercury with a vacuum cleaner.
(c)
To collect small particles of mercury use cellulose tape.
(d)
If there is a larger quantity collect the mercury with a medicine dropper or a battery water rubber-syringe.
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