Plumbers NZ | Plumbing, Gasfitting and Drainage Community

Support => exam support and downloads => Plumbing, Gas fitting and Drainlaying Apprentice Support => Gas Exam June 2007 => Topic started by: LisaS on February 11, 2009, 09:17:15 AM

Plumbers NZ is New Zealand's largest online plumbing, gas and drainage resource. Plumbing exam help, plumbing news, directory and free quotes.

Title: Question 4
Post by: LisaS on February 11, 2009, 09:17:15 AM

QUESTION 4
(a) Give TWO reasons why polyethylene pipes should not be used above ground.
 1
 2
 
(2 marks)

(b)   State the purpose of a pigtail on an LPG installation, and state where it should be located.
 
 Purpose   
 Location 
 
(2 marks)

(c)  State THREE advantages of using polyethylene pipe instead of steel pipe for underground
gas service lines.
 1
 2
 3
 
(3 marks)
Total 7 marks