ALOA Safe and Vault Services 1 — Questions and Answers
Question 1: What is the UL Burglary Rating classification 'TL-15' for a safe?
- The safe resists tool attack on the door for a net working time of 15 minutes using common mechanical and electrical tools (Correct answer)
- The safe can withstand 15 tons of pressure
- The safe is tested against 15 minutes of torch attack
- The safe has a 15-bolt locking mechanism
Correct answer: The safe resists tool attack on the door for a net working time of 15 minutes using common mechanical and electrical tools
UL TL-15 (Tool-Resistant, 15 minutes) means the safe door resists penetration by common hand and power tools for a net working time of at least 15 minutes during UL testing.
Question 2: What is a 'combination lock' manipulation in safe servicing?
- Opening a combination lock by feeling or listening for the dial's internal mechanism to determine the combination without drilling (Correct answer)
- Drilling through the dial to destroy the lock
- Using a borescope to read the combination wheel positions
- Applying a punch to drive out the lock spindle
Correct answer: Opening a combination lock by feeling or listening for the dial's internal mechanism to determine the combination without drilling
Manipulation is the technique of opening a combination lock by sensing mechanical feedback (feel, sound, or light) from the lock's components to determine each number of the combination.
Question 3: Which type of safe lock uses electronic input (keypad) and a motorized bolt to control locking bolts?
- Electronic safe lock (e.g., LaGard, Sargent & Greenleaf 6120) (Correct answer)
- Group 2 combination lock
- Group 1R combination lock
- Lever lock
Correct answer: Electronic safe lock (e.g., LaGard, Sargent & Greenleaf 6120)
Electronic safe locks use a keypad to accept a PIN, then drive a motorized cam or bolt to retract the lock's bolt work, allowing the door to open.
Question 4: What is the purpose of a 'relocker' in a safe?
- A secondary locking device that engages when the lock is attacked, making the safe harder to open even if the primary lock is defeated (Correct answer)
- A device that re-locks the safe automatically after a set time
- A backup combination mechanism
- A bolt that relocks the door when the handle is released
Correct answer: A secondary locking device that engages when the lock is attacked, making the safe harder to open even if the primary lock is defeated
A relocker is a secondary security device (glass or spring-loaded) that triggers and locks the bolt work if the safe is attacked, preventing opening even if the primary lock is destroyed.
Question 5: What UL Group rating designates the highest security level for a dial combination lock used on safes?
- Group 1R (manipulation-resistant) (Correct answer)
- Group 2
- Group 1
- Group 3
Correct answer: Group 1R (manipulation-resistant)
UL Group 1R is the highest manipulation-resistance rating, requiring that the lock withstand at least 20 man-hours of expert manipulation attempts.
Question 6: What is a 'borescope' used for in safe opening?
- A flexible optical instrument inserted through a drilled hole to view the lock mechanism's wheel positions to determine the combination (Correct answer)
- A laser tool that cuts through safe walls
- An acoustic device that listens to combination lock feedback
- A drill guide for precise hole placement
Correct answer: A flexible optical instrument inserted through a drilled hole to view the lock mechanism's wheel positions to determine the combination
A borescope is inserted through a small drilled hole to visually inspect the safe lock's internal components and determine wheel positions, enabling the safe to be opened without full disassembly.
ALOA Safe and Vault Services 1
What is the UL Burglary Rating classification 'TL-15' for a safe?