Final answer:
One guideline for protecting against possible secondary devices is to anticipate their presence at illicit laboratories and to evacuate all personnel quickly if a secondary device is suspected. Specialized personnel and equipment should be used, and safety protocols must be strictly followed.
Step-by-step explanation:
When protecting against possible secondary devices, especially in situations where explosives or hazardous materials may be involved, the guideline to follow includes anticipating their presence at illicit laboratories or in any area where the primary device was found. It is critical to be aware of the potential for additional devices that may be intended to harm first responders or investigators.
To ensure safety, evacuating all personnel as quickly and safely as possible is essential if a secondary device is suspected. It is advisable to use specialized personnel and equipment, such as metal detectors and bomb disposal units, to examine the scene thoroughly.
It is vital to handle items with the utmost care, especially if they might conceal an explosive device, to prevent triggering a secondary explosion. Knowing the location of safety equipment like fire extinguishers and eyewash stations is an important part of laboratory safety, as is having protocols to deal with hazardous agents, which can include dangerous bacteria that are classified as BSL-2.