Definitions cont'd - hdbk10920300

DOE-HDBK-1092-98

Safety interlock--An electrical or mechanical device that prevents operation of equipment or

precludes access to hazardous areas, enclosures, or equipment.

Safety watch--A person whose specific duties are to observe the workers and operations being

performed.

Shall--Information cited is a requirement from a regulatory standard such as OSHA and relevant

DOE Orders.

Should--Information cited is a guidance such as concensus standards.

Underground facility--A facility built below ground surface.

Wavelength--Distance between repetitions of a recurring pattern in an electrical signal or

electromagnetic field.

B-40