equipment shall not be pointed at a person or flammable material. 4)
Thermal spraying shall not be done in areas where paper, wood, oily rags,
or cleaning solvents are present. 5) Conductive safety shoes shall be worn
in any work area where explosion is a concern. 6) During metallizing
operations, including the preparation and finishing processes, employees
shall wear protective coveralls or aprons, hand protection, eye protection,
hearing protection, and respiratory protection. 7) The Accident Prevention
Plan as specified in the Submittals paragraph.
1.5.2
Safe Surface Preparation Procedures
1.5.2.1
The Contractor shall comply with the requirements in Section 06.H of EM
385-1-1.
1.5.2.2
Hoses and Nozzles
In addition to the requirements in Section 20 of EM 385-1-1, hoses and hose
connections of a type to prevent shock from static electricity shall be
used. Hose lengths shall be joined together by approved couplings of a
material and type designed to prevent erosion and weakening of the
couplings. The couplings and nozzle attachments shall fit on the outside
of the hose and shall be designed to prevent accidental disengagement.
1.5.2.3
Workers other than Blasters
Workers other than blasting operators working in close proximity to
abrasive blasting operations shall be protected by utilizing
MSHA/NIOSH-approved half-face or full-face air purifying respirators
equipped with high-efficiency particulate air (HEPA) filters, eye
protection meeting or exceeding ANSI Z87.1 and hearing protectors (ear
plugs and/or ear muffs) providing at least 20 dBA reduction in noise level.
1.5.2.4
Blasting operators shall wear heavy canvas or leather gloves and apron or
coveralls. Safety shoes shall be worn to protect against foot injury.
Hearing protection shall be used during all blasting operations.
1.5.3
Metallizing Equipment
The Contractor shall submit for approval a tabulated list of equipment to
be used on the job, including operating instructions.
1.5.3.1
Pressure Systems
Compressed gas cylinders shall be handled in accordance with AWS Z49.1 and
with CGA P-1. Only special oxidation-resistant lubricants may be used with
oxygen equipment; grease or oil shall not be used. Manifolding and
pressure reducing regulators, flow meters, hoses, and hose connections
shall be installed in accordance with AWS Z49.1. Pressure connecting nuts
shall be drawn up tight, but not over-tightened. If a fitting cannot be
sealed without excessive force, it shall be replaced. Compressed air for
thermal spraying or blasting operations shall be used only at pressures
recommended by the equipment manufacturers. The air line shall be free of
oil and moisture. Compressed air, oxygen, or fuel gas shall not be used to
clean clothing.
SECTION 09971A
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