Unit 3, Lesson 3, Task 4, Exercise 4.1 Part 2
PROFESSOR LEACH: First, I’ll talk about the fire hazards. The university has to carry out a fire drill every year in every building on campus. It’s the law. This is to practise leaving the building quickly and safely. So please make sure today that you know the correct fire escape route from this lab and the fire assembly points, where you have to meet outside. Always leave the building on hearing a continuous ringing of the fire alarm. Oh – yes, and the fire alarm has to be tested weekly. This is on Tuesday mornings at 9.15. It’s a short ring, to show it’s not a real fire or a drill.
We are in a science laboratory where there are a number of hazards, including fire. We have to minimize the risk from these hazards. So please, when using Bunsen burners:
1. Keep loose papers and folders well away from the flame. 2. Minimize the height of the flame by adjusting the gas tap.
3. Until you need to heat something, make sure the flame is visible by adjusting the air hole.
If you leave anything heating over a flame, check it frequently. 5. Remember to turn Bunsen burners off before leaving the lab.
4.
No need to tell you to keep your hands out of the flame! But you should also keep your hands away from the hot tap – the water is very hot! And always protect your hands with heat-resistant gloves when holding anything containing hot liquid.
Any questions so far?
MAYSOUN: Yes, you mentioned fire escape routes. How do we find these?
PROFESSOR LEACH: Good question. See the green notice above the door, with the person running? You have to follow those signs. Find the route after the practical.
MAYSOUN: OK. Thank you.
Unit 3, Lesson 3, Task 4, Exercise 4.2 Part 3
PROFESSOR LEACH: Next, infection. Some of our practicals involve working with pathogens, i.e., with infectious material. There are many ways we minimize the risk of infection. It’s good to see that you are all wearing your lab coats. That’s the first point: always wear your lab coat in the labs to protect your clothes. Splashes on your clothes or skin are a source of infection.
Other points are: 1. Tie back your hair if it’s long.
2. Cover any skin cuts with a waterproof dressing before you come into the lab.
ACCESS EAP: Foundations 203 Key words
pathogens infectious to protect splashes a source tie back cover a waterproof dressing
Key words
the hazards to carry out a fire drill the law the fire escape route continuous the fire alarm the fire assembly points to minimize the risk the flame by adjusting the gas tap visible the air hole frequently heat-resistant liquid
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