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WorksheetsLB E Tightness Testing and Purging Quiz
Total questions: 24
Worksheet time: 12mins
What does the acronym ECV stand for in the context of tightness testing and purging?
Emergency Control Valve
Emergency Services provider
Gas Transporter
Meter Asset Manager
Which test involves taking the pipework up to a set pressure and testing for any loss of pressure over a specified period?
Tightness Test
Leak detection test
Maximum operating pressure test
Purge volume test
What is the purpose of the Safety Shut-off Valve (SSOV) in gas systems?
To shut off gas supply in emergencies
To measure gas pressure
To detect gas leaks
To transport gas
What is the standard covering domestic tightness testing and purging?
IGE/UP/1B
IGE/UP/2A
IGE/UP/3C
IGE/UP/4D
What is the maximum operating pressure (MOPu) allowed for installations?
2bar
3bar
1bar
4bar
What is the maximum pipe diameter for installation pipework IN DOMESTIC GAS ?
35mm
50mm
25mm
40mm
What is the permissible pressure drop on a water gauge defined as?
0.25mbar
0.5mbar
0.1mbar
0.3mbar
For what situations should the tightness testing procedure detailed in IGE/UP/1B be used?
New installations and alterations to existing installations
Only new installations
Only extensions to existing pipework
Routine testing only
What is another name for a Meter Inlet Valve (MIV) in medium pressure installations?
Test Valve (TV)
Pressure Regulator (PR)
Isolation Valve (IV)
Flow Control Valve (FCV)
What should be done if a test valve is not fitted in a medium pressure installation?
Ignore the test
Inform the Gas Transporter or ESP
Proceed without any notification
Install a new valve immediately
What is the maximum permissible pressure drop in mbar for an ultrasonic meter with a pipe diameter of 28mm or less?
4
8
2.5
1
What mechanism in electronic meters prevents gas from passing through if the meter is disturbed?
Pressure valve
Anti-tamper mechanism
Safety lock
Gas regulator
What is the purpose of purging a gas pipe?
To increase gas pressure
To remove air that could cause explosions
To clean the pipe
To reduce gas flow
For small installations with pipework ≤28mm, what is the purge volume based on?
Installation size
Pipe diameter
Cyclic volume of the meter
Gas type
What is the volume (m³) per 1m length of a 15mm copper pipe?
0.00014
0.00024
0.00032
0.00046
According to the purging procedure, what should be done first in the purge area?
Slowly turn on the gas supply
Extinguish any potential sources of ignition
Purge an amount of gas from the fitting
Check the meter test dial
What is the volume (m³) per 1m length of a 32mm steel pipe?
0.00024
0.00046
0.00064
0.0011
What should be done if the installation volume exceeds 0.02m³?
Use a temporary open burner
Ventilate the area
Purge each branch in the pipework
Shut off the purge point
What is the maximum Installation Volume (IV) allowed for tightness testing according to the standard?
0.025 m³
0.035 m³
0.045 m³
0.050 m³
What is the Installation Volume (IV) for a U16 meter as per Table E4?
0.015 m³
0.020 m³
0.025 m³
0.030 m³
How is the Purge Volume (PV) calculated from the Installation Volume (IV) in Example 1A?
Multiply IV by 1.2
Multiply IV by 1.3
Multiply IV by 1.4
Multiply IV by 1.5
What is the first question to consider when selecting the appropriate standard for testing natural gas installations?
Does the installation volume exceed 1m³?
Does the meter designation exceed U16 or G10?
Does the normal operating pressure exceed 21mbar?
Does the pipe diameter exceed 35mm?
If the installation volume exceeds 1m³, which assessment is required?
USE IGE/UP/1B
USE IGE/UP/1A ACS assessment TPCP1A
USE IGE/UP/1 ACS assessment TPCP1
No assessment required
What is the threshold for the normal operating pressure that requires further assessment?
21mbar
40mbar
75mbar
100mbar
