Transcript High Strength Cap

Primary
PrimaryInstructor
Instructor
SSG Ratliff
A
5
TerminalLearning
Learning Objective
Objective
Terminal
91
Task:
Introduction
to to
Modernized
Demolition
Initiators
Action:
Introduction
Modernized
Demolition
Initiators
Condition: In a classroom, given M11 Branch Line
(Inert), M12 Transmission Line (Inert), M81 Fuse
Igniter (Inert),M14 Time Delay (Inert), M9 Holder,
Adhesive Tape, Sandbag, M-2 Crimpers, Detonation
Cord (Inert), and TNT (Inert).
Standards: Identify MDI components and their
applications. Perform misfire procedures, and
construct single, dual, and combination firing
systems using MDI correctly and in sequence, so
when initiated it would detonate if it were live.
2
HISTORY
• Developed in the late 40s
• Used in Civilian Market
• Introduced to the Army in 1996
CONSIDERATIONS
•MDI DOES NOT CHANGE
CHARGE EMPLACEMENT OR SETUP
•MDI IS STRICTLY AN IGNITION
SYSTEM CHANGE.
CAPABILITIES
• Standard military demolition missions
• Deepwater up to 30 meters
• Quarrying(with special application).
• Instant or delay initiation
• Eliminates accidental initiation from static,
transmitters, or electrical discharge
• Hybrid (two types of firing systems)
•MDI Stand Alone
•MDI/Det Cord, Det Cord/MDI
COMPONENTS
M12/M13-Cap
M15-Cap
M11-Cap
M14 Time Fuse
M9 Holder
M81-FI
8
M9 HOLDER
USES:
•Secure a blasting cap (small flap end)
• Secure shock tubes to the blasting cap (larger flap)
• Can secure up to five shock tubes for initiation
PACKAGING:
• 50 Ea Per box
• 10 boxes per crate
• Crate Total- 500
M9 HOLDER
SECURING SHOCK TUBE
• 1-2 Shock Tubes
Looped under
holder
• 3-5 Shock Tubes
Tied in a knot
M11 BLASTING CAP
•
A branch line to a primary charge
•
To ignite shock tube or detonating cord
•
“High Strength Cap”
M11 DESCRIPTION
•
2 FLAGS
•
1 YELLOW (two meters from cap)
•
1 RED (one meter from cap)
•
J HOOK CONNECTOR Used to secure det cord
•
PACKAGING
• Individual coil—30ft. long
• 6 coils per fiber board box
• 10 boxes per crate
• Crate Total= 60 coils
M12 TRANSMISSION LINE
•
Relay for the initiation
pulse to another relay or
high strength cap
•
Low Strength Cap
•
Command Detonation
“ Transmission Line Only”
M12 PACKAGING
• 500 FT. per spool
• 2 Ea spools per foil bag
• 4 bags per crate
• Crate total- 8 spools/ 4000 Ft.
M13 TRANSMISSION LINE
•
Relay for the initiation
pulse to another relay or
high strength cap
•
Low Strength Cap
•
Command Detonation
“ Transmission Line Only”
M13 PACKAGING
• 1000 Ft spool
• 1 spool per foil bag
• 4 bags per crate
• Crate Total= 4 spools/ 4000 Ft
M14 TIME DELAY
• “High Strength Cap”
• 5 minute delay
• Length may be adjusted
• Detonates Explosives, Det
Cord or Shock Tube
M14 PACKAGING
• Approx. 7 ½ ft. long
• 6 coils per fiber board box
• 10 boxes per crate
• Crate Total= 60 Coils
M15 CAP, DELAY
“ Currently a specialized use item only”
M15 USES
• Provide a Delay in the System for
Staged Demolitions
• Is usually used for Quarrying
Operations
M15 PACKAGING
• 70 Ft Individual Coils
• 6 Coils Per Fiber Board Box
• 10 Boxes Per Crate
• Crate Total- 60 Coils/ 4200 Ft
M81 IGNITER
• To Ignite Time Blasting Fuse (M14)
• Ignite Shock Tube
• M81 has a stronger cap
than M60, heavier case,
and 2 plugs
M81 PACKAGING
• 5 Per Fiber Board box
• 60 Boxes Per Crate
• Crate Total - 300 Igniters
SUMMARY
• MDI Components
• Constructing a Nonelectric Initiating Assembly
• Constructing a Dual-firing System
• Priming Explosives