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Support => exam support and downloads => Plumbing, Gas fitting and Drainlaying Apprentice Support => Gas Exam June 2007 => Topic started by: LisaS on February 11, 2009, 09:16:35 AM

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Title: Question 5
Post by: LisaS on February 11, 2009, 09:16:35 AM

QUESTION 5
(a)  Complete the line diagram below, using correct symbols, to show the gas meter and
associated equipment that are required to connect a metal gas service riser pipe to a
domestic installation. Label each component.   

PLEASE SEE PDF FOR DIAGRAM

(5 marks)
(b)  Give TWO reasons why it is necessary to position the gas meter clear of openings 
into the house.
 1
 
 2
 
(2 marks)
(c)   If the gas meter test dial shows an advance of 0.025 m3 in 30 seconds, calculate the hourly
gas rate. 
 
 
 
(2 marks)

(d)   State why is it necessary to use a bridging strap when removing a gas meter.
 
 
 
(1 mark)
(e)     Draw a diagram to show all the requirements, including depths, for a polyethylene 
gas pipe operating at 100 kPa laid under a lawn within a private property.