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That is so drivers in front of the emergency vehicle can read what it says in their rear view mirrors.

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8y ago

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Is there a way to vent a drier inside safely?

There are a couple ways to vent a dryer, my personal favorite is the dryer vent vacuum. They also have dryer vent hoods, and kits available for installation that will increase the effectiveness of your dryer.


Does a fume hood inside a positive pressure unit have to be ex rated in a zone 2 part of a oil rig?

Yes, a fume hood inside a positive pressure unit on an oil rig located in a Zone 2 hazardous area must be explosion-proof (ex-rated) to ensure safety. Zone 2 indicates a location where flammable gas or vapors are not likely to occur in normal operation and, if they do occur, will exist for a short period. Therefore, equipment in this area, including fume hoods, must meet strict standards to prevent ignition sources. Compliance with relevant safety regulations and standards is essential to mitigate risks associated with hazardous environments.


What products makes compression molding?

Compression molding starts by inserting plastic or gelatin into a heated mold. Once the material is heated to a pliable state, a hydraulic press compresses the pliable plastic against the mold, which creates a perfectly molded piece. This process is used mostly for manufacturing gears, dinnerwear and electrical parts.


Difference between ethical hacking and security testing?

According to the EC-Council's Certified Ethical Hacker course documentation the two can be defined as follows; Penetration Testing:A goal-oriented project of which the goal is the trophy and includes gaining privileged access by pre-conditional means.Ethical Hacking:A penetration test of which the goal is to discover trophies throughout the network within the predetermined project time limit. For me reading that I would say difference is; a pen-test has a single goal (trophy) and strict procedures that have to be followed to get that trophy, and an ethical hack is a much larger beast that involves many goals or trophies, could last so long it needs to be time restricted, and in general has less limits. So a pen-test is "one goal, one process" and ethical hacking is "hack everything that can be hacked... ...ethically"