ALAT - Assistant Laboratory Animal Technician Facility Environment and Management 2

Question 1

What is a barrier facility and how does it differ from a conventional facility?

Accepted Answer

A barrier facility maintains a defined pathogen-free environment through strict entry controls, sterilized supplies, and HEPA filtration, while conventional facilities have standard cleanliness without pathogen exclusion

Answer

A barrier facility excludes defined pathogens through controlled entry (showering in, dedicated clothing), sterilized supplies (autoclaved cages, food, water), HEPA-filtered air, and strict SOPs. Conventional facilities maintain general cleanliness without specific pathogen exclusion.

Question 2

What is the purpose of an emergency power system (generator) in an animal facility?

Accepted Answer

To maintain critical life support systems including ventilation, lighting, environmental controls, and automated watering during power outages

Answer

Emergency generators maintain critical systems during power outages: HVAC (ventilation, temperature, humidity), IVC rack blowers, automated watering systems, lighting for photoperiod, and monitoring/alarm systems.

Question 3

How does a pass-through autoclave function in a barrier facility?

Accepted Answer

It is built into the wall between the dirty and clean sides, with doors on both sides that interlock so materials enter dirty and exit sterile into the barrier

Answer

A pass-through autoclave is embedded in the barrier wall with a dirty-side door for loading and a clean-side door for unloading. The doors interlock (both cannot be open simultaneously) to maintain barrier integrity while sterilizing materials.

Question 4

What monitoring systems are typically used to track environmental conditions in animal rooms?

Accepted Answer

Electronic systems with sensors measuring temperature, humidity, light levels, and pressure differentials, with alarms for out-of-range conditions and data logging for regulatory compliance

Answer

Modern facilities use electronic monitoring systems with sensors for temperature, relative humidity, differential pressure, and sometimes light intensity and ammonia levels. These systems log data continuously, trigger alarms for deviations, and provide records for regulatory compliance.

Question 5

What is the role of the cagewash quality assurance program?

Accepted Answer

To verify that washing cycles consistently achieve sanitization through temperature monitoring, visual inspection for residual soil, and periodic microbiological testing

Answer

Cagewash QA verifies consistent sanitization through: monitoring wash/rinse temperatures, visual inspection for residual organic matter, periodic microbiological swab testing of processed cages, and documentation of all parameters.

ALAT - Assistant Laboratory Animal Technician Practice Test

ALAT - Assistant Laboratory Animal Technician Practice Test

ALAT - Assistant Laboratory Animal Technician Facility Environment and Management 2