MTS 318 Load Unit - Manual (Page 38)

318 Load Unit 38 Safety
On rare occasions, a fastener can fail even when it is correctly installed. Failure
usually occurs during torquing, but it can occur several days later. Failure of a
fastener can result in a high velocity projectile. Therefore, it is a good practice to
avoid stationing personnel in line with or below assemblies that contain large or
long fasteners.
Practice good
housekeeping
Keep the floors in the work area clean. Hydraulic fluid that is spilled on any type
of floor can result in a dangerous, slippery surface. Do not leave tools, fixtures,
or other items not specific to the test, lying about on the floor, system, or decking.
Protect hoses and
cables
Protect electrical cables from spilled hydraulic fluid and from excessive
temperatures that can cause the cables to harden and eventually fail. Ensure that
all cables have appropriate strain relief devices installed at the cable and near the
connector plug. Do not use the connector plug as a strain relief.
Protect all system hoses and cables from sharp or abrasive objects that can cause
the hose or cable to fail. Never walk on hoses or cables or move heavy objects
over them. Consider hydraulic distribution system layout and route hoses and
cables away from areas that expose them to possible damage.
When removing hydraulic hoses for equipment repair or changing testing
components (for example, hydraulic grips), make sure to cap the hose ends to
avoid spilling hydraulic fluid.
Provide proper
hydraulic fluid
filtration.
If the system is equipped with a non-MTS hydraulic power unit, ensure proper
filtration to the hydraulic distribution system and testing components. Particles
present in hydraulic fluid and cause erratic or poor system response.
Protect accumulators
from moving objects.
Protect accumulators with supports or guards. Do not strike accumulators with
moving objects. This could cause the accumulator(s) to separate from the
manifold resulting in equipment damage and personal injury.
Record changes
If you change any operating procedure, write the change and the date of the
change in the appropriate manual.
Provide test area
guards
Use protective guards such as cages, enclosures, and special laboratory layouts
when you work with hazardous test specimens (for example, brittle or
fragmenting materials or materials that are internally pressurized).
Do not exceed the
Maximum Supply
Pressure
For standard MTS systems, ensure that hydraulic supply pressure is limited to a
maximum 21 MPa (3000 psi). If you system has a custom application that
requires higher pressure, make sure you limit supply pressure to that rated for the
custom components.
Do not disable safety
devices
Your system might have active or passive safety devices installed to prevent
system operation if the device indicates an unsafe condition. Do not disable such
devices as it can result in unexpected system motion.
Use appropriately
sized fuses
Whenever you replace fuses for the system or supply, ensure that you use a fuse
that is appropriately sized and correctly installed. Undersized or oversized fuses
can result in cables that overheat and fuses that explode. Either instance creates a
fire hazard.