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Offline LisaS

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Question 2
« on: March 30, 2009, 09:00:38 PM »
QUESTION 2
(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.
 1
 2
 3
 4
(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.
 1
 2
 3
(3 marks)
Total 12 marks

Linkback: https://www.plumbers.nz/drainlaying-exam-june-2007/28/question-2/203/

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.

2b)


2c)  1. Cut the trench wall back to a safe slope
      2. Shore up the trench wall
      3. Provide a protective shield for workers.
      4.


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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