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  | ![]() DOE-STD-1161-2003 
c. 
Using an electronic block diagram, print, or schematic, identify the basic component 
symbols. 
d. 
Using a relay ladder, explain the logic ties. 
24. 
Mechanical systems personnel shall demonstrate a familiarity level knowledge of reading 
and interpreting electrical logic diagrams. 
Supporting Knowledge and/or Skills 
a. 
Identify the symbols used on logic diagrams to represent the components. 
b. 
Identify the symbols used to denote a logical "1" (or high) and a logical "0" (or low) as 
used in logic diagrams. 
c. 
Using a basic logic diagram and appropriate information, determine the output of each 
component and the logic circuit. 
25. 
Mechanical systems personnel shall demonstrate a familiarity level knowledge of the 
principles and concepts of natural phenomena hazards and their effect on mechanical 
systems. 
Supporting Knowledge and/or Skills 
a. 
Discuss the potential impact on mechanical systems at defense nuclear facilities from the 
following natural hazards: 
Wind 
Tornado 
Earthquake and/or other seismic events 
Fire 
b. 
Briefly describe the safety measures and design features commonly used as safeguards 
against natural hazards. 
26. 
Mechanical systems personnel shall demonstrate a working level knowledge of 
requirements of Department of Energy (DOE) Order 420.1, Facility Safety and the 
associated guidance of DOE G 420.1-1, Nonreactor Nuclear Safety Design Criteria and 
Explosives Safety Criteria Guide for Use With DOE O 420.1, Facility Safety. 
Supporting Knowledge and/or Skills 
a. 
Discuss the general design requirements of Section 4.1.1, Nuclear Safety. 
b. 
Discuss the general requirements of Section 4.4, Natural Phenomena Hazards Mitigation. 
c. 
Discuss the scope and general content of the Guide with respect to the above areas. 
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