ARMY ELECTRICAL EXPLOSIVE SAFETY MODULE 1-4 QUESTIONS AND CORRECT VERIFIED ANSWERS

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ARMY ELECTRICAL EXPLOSIVE SAFETY MODULE 1-4 QUESTIONS AND CORRECT VERIFIED ANSWERS

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2025/2026

Institution US Army Explosive Safety Familiarization

Course US Army Explosive Safety Familiarization

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ARMY ELECTRICAL EXPLOSIVE SAFETY MODULE 1-4 QUESTIONS AND CORRECT VERIFIED ANSWERS

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ARMY ELECTRICAL EXPLOSIVE SAFETY
MODULE 1-4 QUESTIONS AND CORRECT
VERIFIED ANSWERS
WhichA2fourA2statementsA2areA2characteristicsA2ofA2lightning?A2-A2Ans--
+LightningA2heatsA2theA2airA2toA250,000A2degreesA2F
+MostA2lightningA2neverA2reachesA2theA2ground
+lightningA2carriesA2aboutA230,000A2ampsA2current
+lightningA2isA2aboutA21"A2thick

whichA2ofA2theA2followingA2statementsA2aboutA2lightningA2isA2false?A2-A2Ans--
AllA2lightningA2strikesA2theA2ground

placeA2theA2stepsA2ofA2lightningA2formationA2inA2theA2correctA2order.A2-A2Ans--
1.A2chargeA2formsA2inA2aA2cloud
2.A2aA2steppedA2leaderA2extendsA2downA2fromA2theA2cloud
3.A2andA2upwardA2streamerA2extendsA2fromA2theA2ground
4.A2theA2steppedA2leaderA2andA2upwardA2streamerA2connectA2andA2currentA2flowsA2fromA2t
heA2cloudA2toA2theA2ground

TheA2goalA2ofA2lightningA2protectionA2isA2toA2-A2Ans--provideA2aA2non-
destructive,A2lowA2resistanceA2pathA2toA2ground

selectA2allA2theA2waysA2lightningA2canA2causeA2damageA2-A2Ans--spalling
heatA2orA2fire
electromagneticA2radiation
current
(allA2areA2correct)

whichA2threeA2regulatoryA2publicationsA2areA2usedA2forA2ArmyA2explosivesA2facilities?A2-
A2Ans--DESRA26055.09
DAA2PAMA2385-64
NFPAA2780

IfA2aA2paragraphA2inA2NFPAA2780A2isA2labeledA2withA2anA2asterisk,A2whereA2wouldA2youA2l
ookA2toA2findA2additionalA2explanatoryA2information?A2-A2Ans--NFPAA2780A2annexA2A

WhatA2isA2theA2primaryA2principleA2ofA2lightningA2protection?A2-A2Ans--
toA2protectA2lifeA2andA2propertyA2byA2providingA2aA2non-
destructive,A2lowA2resistanceA2pathA2toA2ground

putA2theA2LPSA2componentsA2inA2theA2orderA2inA2whichA2theA2currentA2flowsA2afterA2aA2ligh
tningA2strikeA2-A2Ans--+strikeA2terminationA2device
+downA2conductor

, +groundingA2system

whichA2imageA2showsA2anA2exampleA2ofA2anA2integralA2LPS?A2-A2Ans--
TheA2middleA2oneA2withA2theA2building

whichA2imageA2showsA2anA2exampleA2ofA2aA2mastA2LPS?A2-A2Ans--
TheA2firstA2oneA2theA2loneA2ranger

whichA2imageA2showsA2andA2exampleA2ofA2aA2catenaryA2LPS?A2-A2Ans--
theA2lastA2oneA2TheA2guyA2withA2allA2hisA2friends

selectA2theA2LPSA2system(s)A2thatA2requireA2eachA2featureA2-A2Ans--
+MastA2systemA2:A2woodenA2orA2metalA2mast,A2strikeA2terminationA2deviceA2onA2mast,A2gr
oundingA2system

+CatenaryA2system:A2woodenA2orA2metalA2mast,A2strikeA2terminationA2deviceA2onA2mast,A
2wireA2connectingA2masts,A2groundingA2system

+IntegralA2system;A2airA2terminalsA2mountedA2toA2theA2building,A2groundingA2system

WhichA2LPSA2typeA2isA2usedA2toA2protectA2aA2large,A2openA2area?A2-A2Ans--
catenaryA2system

whatA2isA2theA2zoneA2ofA2protection?A2-A2Ans--
TheA2areaA2protectedA2byA2aA2lightningA2protectionA2system

AccordingA2toA2theA2rollingA2sphereA2method,A2theA2buildingA2inA2theA2imageA2isA2withinA2t
heA2zoneA2ofA2protection.A2-A2Ans--true

matchA2eachA2variableA2toA2whatA2itA2representsA2-A2Ans--+h1:A2heightA2ofA2mast

+h2:A2heightA2ofA2protectedA2object

+R:A2radiusA2ofA2rollingA2sphere

+d:A2protectedA2distance

UsingA2theA2imageA2below,A2identifyA2theA2valueA2ofA2h1A2(A2blueA2100ft,A2greenA285ft,A2pu
rpleA225.5ft,A2andA2redA232ft)A2-A2Ans--85A2feet

UsingA2theA2imageA2below,A2identifyA2theA2valueA2ofA2h2A2(A2blueA2100ft,A2greenA285ft,A2pu
rpleA225.5ft,A2andA2redA232ft)A2-A2Ans--32A2feet

UsingA2theA2imageA2below,A2identifyA2theA2valueA2ofA2RA2(A2blueA2100ft,A2greenA285ft,A2pur
pleA225.5ft,A2andA2redA232ft)A2-A2Ans--100A2feet

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Uploaded on: June 28, 2026
Number of pages: 9
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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