Army Electrical Explosive Safety Module 3:
Inspections and Safety Exam UPDATED
QUESTIONS AND CORRECT ANSWERS
How long should test records be kept - CORRECT ANSWER 6 inspection cycles
How often must LPS undergo visual inspection - CORRECT ANSWER Every 12
months
How often must conductive floors undergo visual inspection - CORRECT
ANSWER Every 6 months
which 3 are deficiences during an LPS visual inspection - CORRECT
ANSWER Painted bond between air terminal and conductor
Broken bonding strap
Corroded conductor
A 3 point fall of potential test must be conducted every - CORRECT ANSWER 2 years
Which image shows the correct probe spacing for a 3 point fall of potential test - CORRECT
ANSWER A ( 131 ft x 82 ft)
The maximum resistance allowed for a 3 point fall of potential test is less than what -
CORRECT ANSWER 25 ohms
Conductive floors in explosives facilities must be tested every - CORRECT
ANSWER 2 years
, A conductive floor was tested at 5 locations ... Does this test pass for electrode to electrode
resistance - CORRECT ANSWER Yes because the average must be between 25,000
ans 1,000,00 ohms ...
How many total individual tests are required for conductive floor testing - CORRECT
ANSWER 10, 5 electrode to electrode and 5 electrode to ground
A continuity test requires a meter that reads to - CORRECT ANSWER 1 ohm +/- 10 %
When performing a continuity check where will you connect the meter to the busbar -
CORRECT ANSWER At the location specified in the test plan
What resistance results are required to confirm the busbar is providing a low resistance path
to ground - CORRECT ANSWER 1 ohm or less
How frequently is a bond test required - CORRECT ANSWER Every 24 months
What resistance results are required to confirm the busbar is providing a low resistance path
to ground - CORRECT ANSWER 1 ohm
What does a bond test verify - CORRECT ANSWER The function of the LPS
In addition to oxygen fuel and ignition what 2 conditions are required for an explosion -
CORRECT ANSWER
In addition to oxygen fuel and ignition what 2 conditions are required for an explosion -
CORRECT ANSWER Dispersal and confinement
Which class is associated with locations where combustible dust may be in the air -
CORRECT ANSWER Class II
Inspections and Safety Exam UPDATED
QUESTIONS AND CORRECT ANSWERS
How long should test records be kept - CORRECT ANSWER 6 inspection cycles
How often must LPS undergo visual inspection - CORRECT ANSWER Every 12
months
How often must conductive floors undergo visual inspection - CORRECT
ANSWER Every 6 months
which 3 are deficiences during an LPS visual inspection - CORRECT
ANSWER Painted bond between air terminal and conductor
Broken bonding strap
Corroded conductor
A 3 point fall of potential test must be conducted every - CORRECT ANSWER 2 years
Which image shows the correct probe spacing for a 3 point fall of potential test - CORRECT
ANSWER A ( 131 ft x 82 ft)
The maximum resistance allowed for a 3 point fall of potential test is less than what -
CORRECT ANSWER 25 ohms
Conductive floors in explosives facilities must be tested every - CORRECT
ANSWER 2 years
, A conductive floor was tested at 5 locations ... Does this test pass for electrode to electrode
resistance - CORRECT ANSWER Yes because the average must be between 25,000
ans 1,000,00 ohms ...
How many total individual tests are required for conductive floor testing - CORRECT
ANSWER 10, 5 electrode to electrode and 5 electrode to ground
A continuity test requires a meter that reads to - CORRECT ANSWER 1 ohm +/- 10 %
When performing a continuity check where will you connect the meter to the busbar -
CORRECT ANSWER At the location specified in the test plan
What resistance results are required to confirm the busbar is providing a low resistance path
to ground - CORRECT ANSWER 1 ohm or less
How frequently is a bond test required - CORRECT ANSWER Every 24 months
What resistance results are required to confirm the busbar is providing a low resistance path
to ground - CORRECT ANSWER 1 ohm
What does a bond test verify - CORRECT ANSWER The function of the LPS
In addition to oxygen fuel and ignition what 2 conditions are required for an explosion -
CORRECT ANSWER
In addition to oxygen fuel and ignition what 2 conditions are required for an explosion -
CORRECT ANSWER Dispersal and confinement
Which class is associated with locations where combustible dust may be in the air -
CORRECT ANSWER Class II
