MTS Model 632-85 Biaxial Extensometer - Manual (Page 10)

Model 632.85 Biaxial Extensometer 10 Safety Information
Personnel Qualifications
Do not allow unqualified personnel to perform any of the system
maintenance, setup, or operating procedures.
Operation and maintenance of the system by unqualified personnel can
expose them and others to hazards that can cause damage to equipment
and injury or death.
The system maintenance, setup, and operating procedures should only to be
performed by trained personnel. MTS offers training classes that provide the
necessary skills training.
System Hazard Zones
The area around and including the test system is considered hazardous.
Generally, hazards result from motions that occur during system operation.
However, there are latent pressure, overturning, and settling/unexpected
movement hazards that can occur prior to or after system operation, during
specimen installation, or during maintenance and repair.
The hazard zone includes the entire system and an additional area of at least 1
meter (3.3 feet) around the system perimeter. In addition, the hazard zone should
be extended to include the optional hydraulic power source (when purchased)
and any associated hoses, cables, and hardline.
Whenever personnel enter this defined zone they should be outfitted with
adequate and appropriate safety attire including hearing protection, safety
glasses, hard hat, and safety shoes. Never wear loose fitting clothing when in the
test area. Never enter the test area when hydraulics are on.
Avoid Pinch and Crush Points
When possible, install the extensometer on the specimen before installing the
specimen in the grips. Pinch points exist between the parts of the grip or fixture
that contact the specimen. Be aware of these pinch points when installing a
specimen or working around the grip or fixture during test setup. High forces
generated when grip pressure is activated can pinch, cut, or crush anything in the
path of the grip/ fixture specimen contact area and cause serious injury. Stay clear
of any potential pinch points.
A crush point exists between the grips. Whenever possible, use tongs or similar
tool when handling the specimen during specimen installation. Never allow any
part of your body to enter the path of machine movement or to touch moving
machinery, linkages, hoses, cables, specimens, and so forth. These present
serious crush points or pinch points.