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TM 9-2330-272-14
4 - 6 5 . C L E A N I NG
This Task Covers:
a.
Inspection
TANK INTERIOR.
b. Cleaning
Initial Setup:
Equipment Conditions:
Materiais/Parts:
l Tank purged (para 4-64).
l Scrub brush (Item 3, Appendix E)
l Manhole cover removed (para 4-62 or 4-63).
l Dishwashing compound (Item 7, Appendix E)
Tools/Test Equipment:
l Rags (Item 14, Appendix E)
l Combustible gas indicator set
Personnel Required: Two
l Fresh air respirator
l Rubber boots
l Rubber gloves
l Safety rope
a.
INSPECTION
WARNING
. Explosive vapor level check must be made before entering tank. All personnel
required to be inside of tank must be equipped with fresh air respirators, safety rope,
rubber boots, and rubber gloves.
l NEVER work alone inside tank. A safety rope must be secured around chest and
under arms of person entering tank. Opposite end of safety rope must be held by
person stationed at manhole opening. This will allow for quick removal of person
from tank in the event of accident or personal injury.
1.
Enter tank. An explosion-proof light, flashlight, or electric lantern with lens approved for use in hazardous areas
must be used for inspection.
2.
inspect for sediment, solid deposits, or foreign matter of any kind. Inspect for corrosion and signs of bad welds.
Report bad welds to Direct Support Maintenance.
b. CLEANING
CAUTION
Metal tools, steel wool, steel brushes, or any abrasive cleaning powders must not be
used to clean tank interiors. Their use would destroy the thin oxidation film.
1.
Use a lint-free rag to wipe off any sediment or foreign matter of any kind that may adhere to inside of tank. A
bristle brush can be used to remove solid deposits. Mild dishwashing compound may be used for removal of
heavy residue.
4-138
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