Chapter 4 UREs Flashcards
- (017) What is the period called in which the critical functions of the launch facility (LF) are maintained in a state of readiness without dependence on normal environment control support?
*A. Emergency survival
B. Extended survival
C. Hardness-critical
D. Mission-critical
- (017) What supplies power to the LF during extended survival period?
A. Diesel batteries
*B. Diesel-generator
C. Commercial power
D. Emergency batteries
- (017) Which is an example of a hardness-critical item that protects other equipment performing a hardness-critical function?
*A. Shock isolators
B. Re-entry system
C. Ordnance interlocks
D. Cryptographic equipment
- (018) What are two sources of ground shock from a nuclear explosion?
A. Direct-induced and thermal-induced
*B. Direct-induced and air blast-induced
C. Indirectly-induced and thermal-induced
D. Indirectly-induced and air blast-induced
- (018) A large percentage of the energy from a nuclear explosion results in
A. electromagnetic pulse
B. nuclear radiation
*C. air blast effects
D. heat and light
- (018) Acoustic hardness pertains to the protection of sensitive equipment from
A. ground shock
B. under pressures
*C. high noise levels
D. resonant frequencies
- (018) Which characteristic does not greatly influence electromagnetic pulse (EMP) at the launcher and LER liner?
*A. relative humidity
B. Earth conductivity
C. Conduit shielding
D. Geometry
- (018) What term is used to describe when a nuclear weapon is detonated above the atmosphere?
A. Air burst
B. Space burst
*C. High-altitude burst
D. Electromagnetic burst
- (019) The missile suspension and alignment system protects the missile from
A. air blast
B. heat and light
C. over pressures
*D. ground shock
- (019) The launcher closure provides protection from nuclear radiation by its mass and the boron content of the
A. soil
B. steel
*C. concrete
D. insulation
- (019) What are the primary elements of the debris collection system?
A. Five collector bins and supporting cables
*B. Six collector bins and supporting cables
C. Five collector bins and adapter rings
D. Six collector bins and adapter rings
- (020) What facility is not hardened against a ground shock environment?
A. Wing III LCC
*B. Wing I LSB
C. Wing III/V LSB
D. Wing V LCEB
- (020) Where are the air compressor assemblies for both Wing 3 and 5 LCC shock isolation systems located?
A. LCC
B. LSB
C. LCSB
*D. LCEB
- (021) What provides EMP isolation between the launch tube and LER?
A. Launcher closure door
B. Support equipment building
C. Lightning protection system
*D. Rattlespace screen and steel bellows
- (021) What is installed on all conductors at their point of entry into the launcher to suppress any high-level EMP voltages (greater than 2-kilovolts)?
A. Diode surge limiters
B. Circumvention/reset systems
*C. ESA
D. Shunt gaseous discharge devices
- (022) Prior to replacing or repairing bonding or grounding connections, what should you do first?
A. Strip off all conductive finishes
B. Remove cadmium or zinc plating
C. Clean area so it is slightly smaller than the contact area
*D. Remove all dirt, oil, or grease from the areas to be bonded
- (023) In regard to hardness preservation principles, what are the three types of equipment installations?
A. Hard-mounted, shock-mounted, and strap-mounted installations
B. Strap-mounted, shock-mounted, and surface installations
*C. Hard-mounted, shock-mounted, and surface installations
D. Strap-mounted, hard-mounted, and surface installations
- (023) Who can provide technical assistance for all installation hardware or maintenance requirement not specifically covered in TOs or CEMs?
A. Nuclear Weapons Center
B. Maintenance Team Chief
*C. Ogden Air Logistics Center
D. Missile Combat Crew Commander
- (024) Nonmetallic insert nuts should not be used on a bolt when the heat could exceed
A. 215 degree Centigrade
*B. 250 degree Centigrade
C. 265 degree Centigrade
D. 280 degree Centigrade
- (024) In aerospace hardware, what items can also be used with a drilled clevis bolt?
*A. Plain nut with a check nut
B. Plain washer with a cotter pin
C. Castle shear nut with safety wire
D. Flat washer with a self-locking nut
- (024) What are two classifications of screws used on missiles?
A. Machine and fillister head
B. Machine and button head
*C. Structural and machine
D. Structural and flathead
- (024) Which is the most practical and probably the most common method of securing fasteners?
A. Locknuts
*B. Lock wire
C. Cotter pins
D. Self-locking nuts
- (024) Which securing device is most commonly used to hold a castle nut on a drilled bolt or stud?
A. Locknuts
*B. Cotter pins
C. Lock washer
D. Self-locking nuts
- (025) What percentage of the RFI gasket width must be in contact with the hatch cover and hatch frame on the ESA vault at any given point?
A. 100 percent
*B. 75 percent
C. 25 percent
D. 10 percent
