UXO - Destroying UXO

Question 1

179. What is the primary means of protecting personnel from UXO?

Answer 1

A. Evacuate them from the danger area.

Question 2

180. What is the minimum safe distance?

Answer 2

A. 300 Meters

Question 3

181. What are the ways to protect a structure against earth shock?

Answer 3

A. Trenching, venting, and buttressing.

Question 4

182. Describe an effective trench.

Answer 4

A. Should be as close as possible to installation, extend 24” below foundation, slightly longer than radius of earth shock, at least 18” wide

Question 5

183. Describe an effective buttress.

Answer 5

A. 10’ wide at base, tapered to at least 4’ wide on top, must not extend to opposite wall, sandbags interlock.

Question 6

184. Describe Barricades.

Answer 6

A. Must be high enough to block shock waves from height of installation, wide enough to protect corners, thickness or depth is 3’ for less than a 105mm, 6’ for 105mm and above.

Question 7

185. What is the K factor for light case munitions for determining safe frag distance?

Answer 7

A. 300

Question 8

186. What is the K factor for heavy case munitions for determining safe frag distance?

Answer 8

A. 500

Question 9

187. What is the K factor for a mix of light case and heavy case munitions for determining safe frag distance?

Answer 9

A. 650

Question 10

188. What is the formula for determining safe-blast/safe-frag distance from cache detonating point?

Answer 10

A. D= K x Cube root of (NEW x 1.38). Answer will be in feet.

Question 11

189. Describe SF method for cache destruction.

Answer 11

A. HEAT munitions between Heavy case rounds, place primed block on rocket motors, stack munitions no more than 2 high, blocks of C4 overlap 1” minimum, rows of C4 will be placed on body of munitions, primed at both ends

Question 12

190. Describe Lattice method for cache destruction.

Answer 12

A. HEAT munitions between Heavy case rounds, place primed block on rocket motors, stack munitions no more than 2 high, blocks of C4 overlap 1” minimum, rows of C4 will be placed on body of munitions, add a block of C4 about every third block to form a ladder, primed at both ends

Question 13

191. Describe donor method for cache destruction.

Answer 13

A. Use mine (face up or face down) to cover munitions plus two on each side, two stacks high (mine doesn’t count as a third), claymores cannot be donor charge, 2 primed blocks of C4 on top per mine.

Question 14

192. How much C4 used to destroy hand grenade or smaller?

Answer 14

A. ½ block M112 as close as possible to UXO

Question 15

193. How much c4 used to destroy mines?

Answer 15

A. 1 block M112 as close as possible curved around the mine

Question 16

194. How much c4 used to destroy HEAT?

Answer 16

A. 1 block on each side to crush the cone (if hand grenade HEAT ½ block each side)

Question 17

195. How much c4 used to destroy HE round?

Answer 17

A. 1 block as close as possible to warhead

Question 18

196. How much c4 used to destroy HE rocket?

Answer 18

A. 1 block as close as possible to warhead 1 block as close as possible to rocket motor

Question 19

197. How much c4 used to destroy APHE round?

Answer 19

A. 1 block on each side (thick casing).