Heedful procedures

Heertyiilprocedure versus routine procedure. Heedful procedures are designed to be performed with attention. They include steps that require situational awareness and verification before action is taken. Routine procedures are those that are performed so many times that they can become automatic as such, they introduce greater risk. 

General Procedure. Liquid hydrogen fluoride (b.p. 19.4°) containing only 0.1-0.2% of water is available commercially in steel cylinders. It is highly corrosive to tissue,182 and the vapors are very toxic. Consequently, it should be handled with care goggles and rubber gloves must be worn. With heed to these precautions hydrogen fluoride can be handled safely and easily. 

You have applied to work at a company that does research, development, and analysis work. Although the company does not require employees to have extensive chemical experience, all applicants are tested for their ability to follow directions, heed safety precautions, perform simple laboratory procedures, clearly and concisely communicate results, and make logical inferences. 

Always heed safety symbols and cautions listed in activities, listed on handouts, posted in the room, provided on chemical labels, and given verbally by your teacher. Be aware of the potential hazards of the required materials and procedures, and follow all precautions indicated. 

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