TO 35-1-3 - Robins Air Force Base

TO 35-1-3
2.2.6.2 Training Requirements. There are several types of
training that can be used to properly train personnel in the
proper use and safe operations of the HPW equipment and
processes. Regardless of the training method, all personnel
shall be properly trained prior to operating equipment.
2.2.6.2.1 Manufacturer Provided Training. The equipment
manufacturer may provide on-site, video, or computerbased
training for the safe operations of the equipment.
2.2.6.2.2 Locally Developed Training. A locally developed
training program can be used for general instruction of
equipment operation and safety requirements. This training
should include hands-on practical training in HPW paint
removal using all appropriate safety equipment.
a. The HPW equipment should have the operating parameters
of water pressure not to exceed 40,000 PSI; water
flow of 2.85 GPM, bicarbonate of soda blast media flow
rate 1/4 to 1/2 lb. per minute.
b. The nozzle standoff distance should be within the range
of 2 to 4 inches from the tip of the nozzle to the working
surface.
c. The angle if incidence between the nozzle and the work
surface should be within the range of 40 to 60 degrees
from the surface being stripped.
d. The nozzle should be moved across the surface at a
minimum rate of 4 inches every second.
• High Pressure water can cause serious personal injury
if the nozzles are directed at personnel. Never
point the nozzle in the direction of other personnel.
• Water and blast media can create slippery conditions.
Walking on top of equipment should be
avoided. Use fall protection and all work stands
shall have guardrails in place.
2.2.6.3 Personnel and Equipment Preparation Prior to
HPW.
Prior to performing the HPW paint removal process, the following
measures should be taken to ensure the safety of personnel
and protection of the equipment to be depainted.
a. Defuel and disconnect the battery of the equipment to be
depainted.
b. Ensure the SE seams, and crevices are protected from
water intrusion/entrapment to prevent corrosion.
c. Remove and protect from the high-pressure water
steam, all soft metal/non-metal components such as data
plates, copper parts, hoses, etc.
d. All sources of ignition shall be kept a minimum of 50
feet way from the HPW paint removal process.
e. Personnel involved in the HPW process shall wear as a
minimum earplugs, earmuffs, full-face shield, wetweather
gear, water-resistant hood, waterproof shoes,
and shin and instep guard assemblies. The skin and
instep assembly should be puncture resistant aluminum
with a 5-inch wide by 6-inch long instep section
attached by a hinge assembly to a shin section of at least
20-inches length.
2.2.6.4 HPW Paint Removal Operation.
Care should be taken in HPW paint removal operations
to preclude blasting media intrusion and
warpage of unsupported thin panels.
2.2.6.5 Post HPW Paint Removal Cleaning.
After completing the HPW paint removal process the following
steps should be taken to ensure equipment is protected
again flash rust and corrosion:
a. Remove any protective materials.
b. Areas where the coating was shielded from the HPW
process should have paint mechanically or chemically
removed per TO 1-1-8.
c. Open, inspect, and flush all areas where blast media
may be entrapped with clean, fresh water.
d. The equipment or components should be thoroughly
washed in accordance with Chapter 2 of this technical
order.
e. Allow the equipment and/or components to thoroughly
dry.
f. Prepare equipment and/or components for a coating system
or treat with a Flash Rust Inhibitor such as Hold-
Tight 102. Flash Rust inhibitors are temporary rust
inhibitors that usually allow an additional 48-hour interval
before priming without flash occurring.
NOTE
HPW Paint Removal will present a high potential for
flash rusting on equipment. Ensure equipment is
primed or treated with a Flash Rust Inhibitor within a
maximum of 48 hours after paint removal.
HPW Paint removal operations can damage equipment and
personnel if instructions and precautions are not followed. Following
the requirements below are necessary to prevent damage:
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