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1.17. AVOID DANGEROUS ENVIRONMENTS.
Do Not operate this equipment in elevated areas without using fall protection equipment.
Certain applications of this equipment may require the use of scaffolding. Use of scaffolding
creates hazardous situations such as tripping and fall hazards which can result in serious injury
or death to operating personnel. Consult OSHA 29 CFR 1910 Subpart D.
1.18. AVOID DANGEROUS ENVIRONMENTS.
Do Not blast objects that are not properly secured. The blast operation can cause the blasted
object to shift or move. Extremely large objects to be blasted can create a crush hazard to
operating personnel which can result in serious injury or death. Properly secure the object to be
blasted.
1.19. AVOID DANGEROUS ENVIRONMENTS.
Do Not blast objects used to store flammable materials. The blast operation can cause sparks
which can ignite fumes or residual flammable materials inside enclosed containers which can
explode resulting in serious injury or death to operating personnel.
1.20. AVOID DANGEROUS ENVIRONMENTS
It has been determined that blast abrasives approved for use in blast equipment are not ignitable
nor do they present a dust explosion hazard in environments approved for use. However,
airborne substances that make up the items and substrates being blasted can be ignitable when
mixed with airborne dust from the blast abrasive. To mitigate risk of dust explosion avoid
blasting in confined spaces without proper ventilation. Consult plant authorities, OSHA 29 CFR
1910.146 and 1910.94.
Explosion Hazard. Do Not operate blast equipment in confined spaces without proper
ventilation. Consult plant authorities, OSHA 29 CFR 1910.146 and 1910.94.
1.21. ELECTRICALLY GROUND EQUIPMENT.
Static electricity is generated by the abrasive flow through the blast hose and/or vacuum hose.
To minimize chance of static electrical shock to operating personnel only use anti-static blast
hose and/or vacuum hose, properly electrically bond the blast nozzle, blast hose couplings, and
the equipment, and properly install an earth ground to the abrasive blaster. See Section 5.10.
1.22. MAINTAIN VESSEL INTEGRITY.
Do Not operate this equipment with the pressure vessel damaged, or with any part of it worn or
damaged. Do Not operate this equipment in a condition that may cause failure of the pressure
vessel. See Sections 1.22 through 1.32 below.
An abrasive blaster is a Pressurized Vessel. Alterations, damage, or misuse of the pressure
vessel can result in rupturing. Damaged or incorrect components used on the abrasive blaster
can result in rupturing. The compressed air inside a pressurized vessel contains a dangerously
high level of energy which can propel objects and cause serious injury or death.
1.23. NEVER OPERATE OVER MAXIMUM WORKING PRESSURE.
Do Not operate this equipment above maximum allowable working pressure (MAWP) at
maximum operating temperature (°F) shown on the ASME nameplate attached to the vessel.
See Sections 2.2 and 8.1.
1.24. INSTALL PRESSURE RELIEF DEVICE.
Do Not operate this equipment without a pressure relief device in place. The ASME Code
requires that all vessels be equipped with pressure relief devices prior to installation. The
pressure relief device must be set at the maximum allowable working pressure of the abrasive
blaster. See the ASME nameplate attached to the vessel typically located above the handway.
See Section 3.11 for information regarding the pressure relief valve.
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