ACS Revision
Quiz by Alan Moth
Feel free to use or edit a copy
includes Teacher and Student dashboards
Measure skillsfrom any curriculum
Measure skills
from any curriculum
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
With a free account, teachers can
- edit the questions
- save a copy for later
- start a class game
- automatically assign follow-up activities based on students’ scores
- assign as homework
- share a link with colleagues
- print as a bubble sheet
19 questions
Show answers
- Q1If an uncontrolled gas escape is encountered, the first thing to do is...leave the site and inform the occupier as soon as possiblenotify CORGIapply the Gas Industry Unsafe Situations Procedure for At Risk installationsinform the gas supplier or transporter30s
- Q2Where should the procedure to be carried out in the event of a gas escape be found?Affixed to the service pipe riserOn or near to the applianceAffixed to the emergency controlAffixed to the meter30s
- Q3The main constituents of complete combustion are...water vapour and carbon dioxidecarbon monoxide and nitrogenmethane and water vapournitrogen and methane30s
- Q4The main visual sign of incomplete combustion within an appliance is...stable blue flames with well-defined inner and outer coneslimescale deposits on the heat exchangersoot formation, changes in the flame picture or flame impingementcarbon dioxide pluming from the burner30s
- Q5The reason for waiting one minute before timing the soundness test is to...allow the regulator to settleallow for temperature stabilisationreduce the gas velocityprevent the ingress of air30s
- Q6Providing there is no smell of gas, on an existing installation with appliances connected, the allowable pressure drop with an E6 meter fitted is....2mb8mb4mb0mb30s
- Q7On an existing installation with no appliances fitted, the allowable pressure drop is...related to the total volume of the meter and pipeworkcalculated by adding the total volume of the meter, pipework and appliancesdetermined by the total volume of the meterzero (no pressure drop allowed)30s
- Q8The meter regulator must operate at what pressure?19mbar (+ or – 2mbar)18mbar (+ or – 2mbar)21mbar (+ or – 2mbar)20mbar (+ or – 2mbar)30s
- Q9After satisfactory testing and purging, what must be checked?All doors and windows are openWorking pressure at meterOperation of CO detectorsStanding pressure at the meter30s
- Q10If pipework passes through any wall or other solid structure it must...take the shortest route and be sleevedonly be steelpass through an existing air brickonly be the wrapped copper30s
- Q11When breaking into a gas supply pipe or removing a meter, what must be fitted?A supplementary bondAn RCBA main equipotential bondA temporary continuity bond30s
- Q12The emergency control valve handle or lever, in addition to being securely attached and parallel to the pipe when open, must also...turn the gas off when moved upwardsturn the gas off when moved downwardsbe sealed against unauthorised useturn the gas off when rotated two full turns anti-clockwise30s
- Q13Adventitious ventilation is...the amount of air required to burn one cubic foot of gasthe allowance made for background air seeping into roomsprovided to prevent the build up of radon gasalways sited adjacent to the appliance30s
- Q14The ventilation required for an appliance must be provided through grilles/vents with...a vent of at least 35cm²holes of less than 5mmboth high and low level openings, 300mm apartopenings of greater than 5mm and less than 10mm30s
- Q15The correct amount of ventilation direct from outside, required for an open flued appliance with a heat input of 27kW (net), situated in a room is...121.5cm2100cm2135cm290cm230s