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Offline LisaS

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Question 2
« on: March 30, 2009, 09:00:38 PM »
(a) In relation to trench excavation, explain what is meant by the term safe slope.
(1 mark)
(b)   State a minimum safety precaution that should be taken when machinery (eg. a digger)
has been used on site and is standing idle.
(1 mark)
(c)   List FOUR methods of preventing trench wall collapse while workers are working in 
the trench.
(4 marks)
(d) Name a safety device that should always be used with portable electrical equipment.
(1 mark)
(e)  State the meaning of the following symbol on a portable electrical drill.
(1 mark)

(f) State the purpose of cardiac pulmonary resuscitation (CPR).
(1 mark)
(g) State the THREE common immunisation precautions that should be taken by a drainlayer.
(3 marks)
Total 12 marks


Offline Plumber

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Re: Question 2
« Reply #1 on: April 07, 2009, 07:06:01 PM »
2a) The steepest slope at which an excavated face is stable against slips or slides.


2c)  1. Cut the trench wall back to a safe slope
      2. Shore up the trench wall
      3. Provide a protective shield for workers.

d) Isolating transformer

e) Double insulated appliances

f)  This is the combination of rescue breathing and external cardiac compression.

g) 1. Hepatitis a
    2. Hepatitis b
    3. Tetanus

Please note that the advice I am giving is only my opinion and not necessarily a fact.  Please refer to our terms and conditions.

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