Gas Questions – Flashcards
Unlock all answers in this set
Unlock answersquestion
| Purging volume of 0.01m3 applies to which domestic gas meter?: |
answer
| [image] |
question
| A landlord must under Regulations have all gas appliances and installation pipework safety checked annually. In addition to this he must keep records of the safety checks carried out for how long? |
answer
| [image]years from the date of the check |
question
| What pipe can not be used for gas? |
answer
| Polyethylene pipe |
question
| A gas fire fitted to a letter box opening with no identifiable catchment space must be classified as: |
answer
| At Risk instal[image]lation |
question
| Installation pipework within the meter box entering the property without a sleeve or seal, how would you classify this installation? |
answer
| AR[image] |
question
| When PTFE tpe is used on a threaded gas joint, the tape must overlap by? |
answer
| 50%[image] |
question
| The device intended to provide isolation for the purpose of servicing appliances is known as a ... |
answer
| Gas cock |
question
| What would be used to pinpoint the source of a small gas escape? |
answer
| L.D.F |
question
| What is free area required for compartment ventilation of a 23KW net open-flued boiler in which the air will be provided from a room in the building? |
answer
| Top: 230cm2 Bottom: 460cm2 [image] [image] |
question
| A vitiation sensing device works on the principle of: |
answer
| A flame lifting in a vitiated atmosphere. |
question
| When an appliance is identified as Immediately Dangerous, the gas operative must in all cases: |
answer
| Warn the customer of the dangers of using the appliances. Attach a 'Do Not Use' label. Take steps to have the appliance disconnected. |
question
| When a meter is fitted within an outside meter box, the emergency meter control must always be located: |
answer
| Within the meter box.[image] |
question
| When carrying out a gas safety inspection how would you classify a steel gas pipe downstream the gas meter inside the property? |
answer
| [image] |
question
| What is not a part of tightness testing a low pressure installation? |
answer
| Standing pressure test |
question
| What is not applied to Domestic tightness testing? |
answer
| Meter volume: greater than 16 m3/hr |
question
| The terminal of a natural draught open flue fitted before 1st Dec 2000 terminates above a roof with a pitch of 45*. The minimum distance above the intersection with the roof must be? |
answer
| 600 mm[image] |
question
| Which is the minimum concentration of carbon monoxide within the air that will cause occupants to fall victim to coma within a few minutes? |
answer
| 0.4% |
question
| A free standing range cooker is installed without a stability device |
answer
| N.C.S [image] |
question
| Where gas installation pipes are to be fitted within a floor of solid construction, or under the foundations of a building, they are require? |
answer
| Protection against failure caused by structural movement. |
question
| Why does a condensing boiler require condensate water to be drained away from the appliance? |
answer
| At low temperature vapour constantly produces condensate when boiler is working. |
question
| What are the differences between a simplex and a duplex burner? |
answer
| The number of injectors. |
question
| Unless otherwise stated by the appliance manufacturer, a DFE fire has which of the following ventilation requirements? |
answer
| Ventilation of 100 cm2 to be provided. |
question
| What is the purpose of overheat thermostat fitted to a gas boilers? |
answer
| To provide added protection to the appliance in the event of thermostat failure. |
question
| Yellow flames are being discharged from an open flued gas boiler burner which has not been serviced for three years. What is the most likely cause of the problem? |
answer
| The burner is blocked. |
question
| If the push rod of an instantaneous water heater is bent, this would have the effect of? |
answer
| Causing the gas to stay on |
question
| What must be included into the design of a glass fronted fire? |
answer
| A down draught diverter. |
question
| What is the purpose of a by-pass port in oven thermostat? |
answer
| To allow a small flame in the burner first before it comes to full. |
question
| Technical Bulletin 015 and 022 states that you can install |
answer
| new gas cookers with FSD used gas cookers without FSD with manufacturer's instructions new gas cooker without FSD |
question
| The gas supply point for a cooker should terminate behind the appliance at a height of approximately? |
answer
| 0.75 m[image] |
question
| Which gas component should be fitted to the supply to a built-in oven, where a rigid connection is used to connect the oven to the gas supply? |
answer
| Appliance isolation tap. |
question
| When a radiant/convector gas fire is to be installed onto a new pre-cast flue, what is the minimum cross sectional area of the flue? |
answer
| 12,000mm2[image] |
question
| Although less time is desired, the flame supervision device for a gas fire other than DFE when tested should activate within: |
answer
| 180 seconds[image] |
question
| An immersion heater has a 2500 watt rating at 250 volts. What size circuit protective device is required to protect it? |
answer
| 2500 / 250 = 10 amp[image] |
question
| The unit of electrical power is measured in ... |
answer
| Watts[image] |
question
| On completion of a gas pipework installation the system should be purged. The reason for purging is to..? |
answer
| remove air and gas/air mixtures prior to use |
question
| How many starter blocks should be installed on a pre-cast flue system?: |
answer
| 3[image] |
question
| The installation pipe is positioned... |
answer
| Downstream of the primary meter. |
question
| What is the name of the component fitted to a fan assisted boiler which prevents the boiler from operating if the fan fails? |
answer
| Pressure switch. |
question
| What is the name of an ignition arrangement for hotplates when gas mixes with air after injector? |
answer
| Post-aerated |
question
| If the coil in a calorifier on a combustion chamber split, it will cause the? |
answer
| Pressure to drop in the system. |
question
| Yellow flames are being discharged from a grill burner which has not been serviced for 3 years. What is the possible causes of the problem? |
answer
| Air ports became blocked. Cooker's flue way is blocked. Blocked injectors. |
question
| When installing a wall mounted gas fire, unless otherwise stated by the manufacturer, the top of the burner must be situated at least: |
answer
| 225mm from the carpet[image] |
question
| When a gas fire is to be installed into new pre-cast flue blocks, the minimum internal dimension of any part of the flue should be? |
answer
| 125 mm[image] |
question
| When is it not necessary to fit a flue terminal to a flue system? |
answer
| When the flue has a diameter greater than 170mm |
question
| The pressure gauge in a sealed system should be capable of reading which of the following range of pressures? |
answer
| 0 to 4 bar[image] |
question
| The feed and expansion cistern in an open vented central heating system should be capable of receiving what percentage volume of water from the heating system when heated ? |
answer
| The cistern should be sized so that it can accommodate about 4% of the contents of the system when heated, this is the approximate volume of expanded water due to the heating of the system |
question
| A system boiler cannot provide _________ but it will heat a storage cylinder for hot water supply. |
answer
| instantaneous hot water |
question
| One method used to give an additional control and economic use of heating systems is to split the system up into separate ____________ |
answer
| heating zones |
question
| A ____________ is a device which opens or closes in response to signals from a room thermostat or a cylinder stat. |
answer
| motorized valve |
question
| Which of the following components is fitted at the high points in pipework in central heating systems? |
answer
| Automatic air vent |
question
| What is the likely outcome of rigidly fixing central heating pipework to the notched sections in timber first floor joists? |
answer
| Expansion and contraction noise |
question
| The type of heating system that uses 2 x two port motorised valves is known as a ? |
answer
| S plan |
question
| A heating circuit in which the flow and return pipes are completely separated until they connect to the boiler is known as a? |
answer
| Two Pipe System |
question
| What is the recommended maximum clip spacing distance for a vertical 15 mm copper pipe? |
answer
| The maximum clip spacing distance for 15 mm vertically clipped copper pipe is 1800 mm. |
question
| Which one of the following pipework materials is not permitted to be installed in a new cold water system? |
answer
| Lead[image] |
question
| Flame supervision devices (FSD) |
answer
| FSD is a general term for any device designed to stop gas going to the burner if the flame is extinguished. This is to prevent a dangerous build up of gas within the appliance, its flue or the room. |
question
| Whilst completing the internal 26(9) Visuals on a gas appliance the engineer checks off his (C) Combustion List which includes; |
answer
| Injector, Mixing Tube, Burners, and Heat Shields |
question
| Ventilation for a flueless gas hob or cooker is dependant on ? |
answer
| The room volume, and openable window or similar. |
question
| The installation of a CO void monitoring safety shut-off system (COSSVM) and regular service/maintenance by a registered engineer can be used instead of inspections hatches to confirm the integrity of a concealed room-sealed fan-draught boiler chimney/flue system if… |
answer
| it is an existing installation and the boiler was installed before 1st of January 2013 |
question
| What is the likely fault if a cooker oven bumer extinguished after a period of approximately 15 minutes?: |
answer
| Blocked oven thermostat by-pass |
question
| A likely cause of excessive working pressure at a gas fire or cooker is: |
answer
| An incorrectly adjusted meter governor. |
question
| When double wall flue pipes are run externally it is important, in order to prevent condensation, to ensure the flue length does not exceed: |
answer
| 28 meters[image] |
question
| You find a propane cylinder stored within a dwelling, how would you classify this situation? |
answer
| A.R[image] |
question
| When an Extract fan causes spillage of combustion products from an open flued appliance, additional air ventilation may be required to remedy the problem, this is provided by... |
answer
| A permanent vent. |
question
| When de-commissioning sections of gas installation pipework, the plumber must ensure that gas contained in the pipework is? |
answer
| Fully purged. |
question
| After completing the installation of a gas appliance the next operation should be to? |
answer
| Test for tightness. |
question
| Where a gas installation pipe work exits premises to serve remote external appliances, the correct location for an external control valve is? |
answer
| In an accessible position externally at the point where the pipe exits the premises. |
question
| On a gas installation supply when carrying out gas work in the tra service valve and gas control), the engineer on completion must |
answer
| test for gas tightness using a manometer or Leak Detection Fluid |
question
| Of the 3 areas that gas work can be completed on a gas installation which requires a tightness test on completion of this work using LDF only with gas flowing is |
answer
| The appliance internal supply between the gas control and injectors |
question
| The only components of a gas installation that are expected to escape gas inside the allowed tolerances are the |
answer
| appliance gas controls |
question
| The gas appliance Reg 26(9) Internal checks are otherwise known as |
answer
| the appliance gas safety inspection ventilation, fluing, combustion, ignition controls |
question
| A Safety Test on a gas appliance must confirm |
answer
| Correct Ventilation, Fluing, Combustion, and safety device operation |
question
| When completing our internal 26(9) service inspection appliance checks we have to isolate the electrics. How would we test that this has been completed safely |
answer
| Isolating at plug or fused spur, Using a voltmeter, carry out polarity checks with the power on and off to confirm correct isolation and polarity |
question
| Prior to completing the internal 26(9) service checks on a gas appliance we would |
answer
| safely isolate the gas and electrics |
question
| When completing the internal 26(9) service gas safety appliance service inspection on a gas appliance the (V) Ventilation checks are to |
answer
| confirm that the airways from the appliance air inlet area to the mixing area are clear |
question
| When completing the internal 26(9) gas safety checks on a gas appliance the (I) include amongst checking spark electrode condition and gaps, the checking of |
answer
| safety devices for correct installation and condition ( ) overheat stats ( ) flame supervision devices |
question
| When completing the internal 26(9) checks on a gas boiler the engineer commences his (F) Fluing Visuals. Which of the following is 'NOT' on of the internal flue visuals |
answer
| Combustion Heat Shields |
question
| Whilst completing the internal 26(9) Visuals on a gas appliance the engineer checks off his (C) Combustion List which includes; |
answer
| Injector, Mixing Tube, Burners, and Heat Shields |
question
| After completing a gas repair on a gas appliance the engineer starts by completing the internal checks, and once satisfied moves onto the external safety checks. Starting with (V) Ventilation the engineer |
answer
| Checks the sizes and type of vents installed at the property including the ventilation path to the appliance is correct |
question
| An Engineer is working on an open flued gas back boiler and fire unit. Having completed the service, the appliance is put back together and the engineer commences the safety checks. As part of these the engineer proceeds to complete the fluing checks, these include checking the flue terminal type and position, also |
answer
| checking the conformity and design of the flue before completing a flue flow and spillage test |
question
| An engineer has finished doing the internal service checks on a gas oven, and turns the gas and electrics back on. After checking the Ventilation and Combustion requirements and provision the engineer proceeds to check the ignition and safety devices. There is a liquid expansion flame supervision device in the oven. The engineer will need what equipment to complete the test? |
answer
| Eyes Only[image] |
question
| What part of the internal service/commission checks does checking the flue hood of a gas boiler for cracks fall under |
answer
| Internal Fluing |
question
| Checking the heat exchanger for blockages on a gas boiler forms part of the |
answer
| internal fluing checks |
question
| Checking that the thermostat phial on an old boiler is securely fitted into its pocket forms what par your checks |
answer
| Internal Ignition/safety device |
question
| Checking the injectors for any visual blocks is covered by |
answer
| Internal Ignition/safety device |
question
| Checking that a vent is correctly sized covers what part of the inspection |
answer
| External Ventilation |
question
| Checking the flame picture is required to confirm |
answer
| Correct Air Gas Mix |
question
| Completing a spillage test is most commonly required on |
answer
| a conventional flue natural draught appliance |
question
| An engineer is checking the room volume allowances for a flueless gas water heater. Which check is he doing |
answer
| Ventilation |
question
| An engineer is gas rating a gas appliance. What check is he doing |
answer
| confirming the appliance is consuming the correct amount of gas |
question
| An engineer is doing a gas tightness test at the meter 60 seconds after extinguishing the pilot on the boiler. What test is he doing |
answer
| checking the flame failure device has actually closed safely |
question
| What is not a gas fitting? |
answer
| Gas Service Pipe |
question
| Which is to be regarded as WORK in relation to gas fitting? |
answer
| Permanently adajusting or altering gas fitting |
question
| Which Regulation clearly defined the type of property the Regulations do not apply to? |
answer
| Regulation 2.4[image] |
question
| Which of the following premises do the Regulations apply to when gas is supplied through a distribution main? |
answer
| Premises used for sleeping accomodation |
question
| Employers are responsible for ensuring the competence of gas fitting operatives who they employ |
answer
| True.[image] |
question
| Which Regulation prohibits any person falsely pretending to be a member of a class of persons approved by the HSE. |
answer
| Regulation 3.7[image] |
question
| Gas pipes entering a building through a brick wall can do so without using sleeve, providing both sides of the wall through which the pipe passes are sealed with fireproof mastic. |
answer
| False[image] |
question
| Regulation 6 deals specifically with general safety precautions for persons carrying out work in relation to gas fitting. |
answer
| True[image] |
question
| Normally, as defined in these Regulations, unattended in relation to domestic premises means absent from the premises |
answer
| TRue[image] |
question
| Which Regulation states that a separate notice must be prominently displayed indicating when the emergency control is open or closed? |
answer
| Regulation 9.2[image] |
question
| Which Regulation states that installers must notify the responsible person where permament bonding is required but not connected? |
answer
| Regulation 18.2[image] |
question
| Regulation 20 deals with the protection of buildings whilst installing pipework. |
answer
| Tru[image]e |
question
| Prior to the installation of any appliance, a person providing a gas supply to a domestic pipework installation for the first time is responsible for; |
answer
| testing and purging the whole pipework installation |
question
| Regulation 34 of The Gas Safety (Installation and Use)Regulations, who has to be initially informed when you identify an appliance which is failing to discharge its products of combustion safely? |
answer
| The person responsible for the premisis |
question
| The acceptable jointing compounds/material for use on gas pipework with all screwed joints up to 28mm are: |
answer
| PTFE tape to BS 6974, jointing paste to BS 5292 |
question
| The maximum interval for supports for 25mm mild steel pipe in horizontal run is: |
answer
| : 2.5m[image] |
question
| An emergency control should be: |
answer
| labelled or marked to show its open and closed positions, easy to operate and fitted with a suitable handle, which is securely attached, or other permanent means of operation. |
question
| Low burner pressure at an appliance could create |
answer
| Too low an efficiency |
question
| If the oxygen around a flame is reduced by 25% what are the main constituents of incomplete combustion. |
answer
| Carbon monoxide and water vapour |
question
| ventilation requirement for combustion air direct to outside for an open flued gas boiler with a rated input of 15 kW fitted in a room is: |
answer
| 40cm2 |
question
| An open flued boiler with a maximum net input of 18kW is fitted in a compartment with high and low ventilation to an internal space. The minimum free area of high level ventilation must be |
answer
| HIGH LEVEL;180 cm2 |
question
| Where a person performs work in relation to a gas appliance, he must immediately examine, among other things, the effectiveness of the flue system. If the flue is found to be faulty, the action which the Regulations require to be taken is? |
answer
| Notify the responsible person and where different, the owner, of the appliance. |
question
| On a Medium to Low pressure meter box installation, where must the outlet pipework and vent exit through? |
answer
| The base of the box. |
question
| An appliance heat exchanger is blocked with soot and the flame picture is very poor. Would this appliance be: |
answer
| I.D[image] |
question
| The initial signs of someone suffering from carbon monoxide poisoning are likely to be? |
answer
| Severe headache and convulsions |
question
| What is the free area required for compartment ventilation of a 23kW net open-flued boiler in which the air will be provided from a room in the building? |
answer
| Top: 23x10=230cm2 Bottom: 23x20=460cm2 [image] [image] |
question
| What action should be taken when you have classified an appliance as at risk? |
answer
| Turn off the appliance with customer permission[image] |
question
| Which installation within a tenanted property would contravene The Gas Safety (Installation and Use) Regulations? |
answer
| A back boiler and fire with adequate ventilation fitted in a lounge that has been used as a bedroom since January 2001. |
question
| What is the minimum length a Temporary Continuty Bond should be? |
answer
| 1200mm |
question
| The minimum cross sectional area of a new flue block system for a gas fire must be |
answer
| 16,500mm2 with no dimension less than 90mm. |
question
| TB 008 (Edition 3) provides guidance to gas engineers to assist them in meeting the requirements of Regulations when working on: |
answer
| Existing concealed room-sealed fanned draught boiler chimney/flue systems in domestic premises. |
question
| The maximum distance between 22mm light gauge copper pipe supports for internal horizontal runs is? |
answer
| 2.0 meter[image] |
question
| Is it acceptable to site wall units above a built-in hob within a vertical height of 800 mm of the hob? |
answer
| Yes. Min 760 mm of clearance are required. |
question
| What control device is not incorporated into a standard multifunctional control valve fitted to a gas boiler? |
answer
| Weep line |
question
| When carrying out a gas safety inspection how would you classify a steel gas pipe downstream the gas meter inside the property? |
answer
| OK[image] |
question
| If an open flued boiler with a rated input of 23.31 kW (gross) is installed within a room, the ventilation requirement is? |
answer
| 70 cm2 |
question
| A heat shield adjacent to plastic gutters needs to be fitted due to the close proximity of flue terminals. The heat shield should be a minimum lenght of? |
answer
| 1m |
question
| A free standing range cooker is installed without a stability device |
answer
| NCS[image] |
question
| When a gas flue block system is to be connected to a terminal above the roof or at the ridge using flue pipe, the flue should have a minimum diameter of; |
answer
| 125mm[image] |
question
| When a gas flue block system is to be connected to a terminal above the roof or at the ridge using flue pipe, the flue should have a minimum diameter of; |
answer
| 125mm[image] |
question
| A simple way of testing a flame failure device on a gas appliance is to shut off the service valve to allow the pilot to extinguish. Would this be acceptable on a gas fire isolated by a restrictor elbow ? |
answer
| No, when the restrictor is closed down there is an escape of gas which could be ignited[image] |
question
| Immediately After refitting a burner pressure test nipple following tests on a gas appliance the test point must be tested for tightness using LDF only when |
answer
| the appliance burners have been turned back on |
question
| After carrying out burner pressure test, and in the absence of any Leak detection fluid, would a gas tightness test at the meter test point identify whether the test point has been adequately sealed |
answer
| No[image] |
question
| When servicing a radiant brick convector gas fire the closure plate..should? |
answer
| be removed to inspect the catchment area |
question
| When servicing a gas oven, it is necessary when visually inspecting its condition to check in addition to the condition of the burners, and injectors where possible, the |
answer
| Path of combustion air into the appliance, and combustion product path out of the combustion area into the room or flue |
question
| When servicing a gas appliance using the manufacturer's manual the burner pressure will |
answer
| not confirm the appliance heat input is correct |
question
| When gas commissioning a modern gas boiler with forced draught burners the manufacturer will most commonly require you check the inlet working / operating pressure, gas rate and |
answer
| Flue gas analysis |
question
| When servicing any fuel effect fire it is essential that the manufacturers manual is present to ensure amongst other things that |
answer
| The coals are re-fitted correctly to ensure proper airation and flame picture |
question
| When carrying out a service inspection on a balanced flue space heater it is essential that we check the viewing glass and heat exchanger for cracks or holes to primarily prevent |
answer
| combustion gasses coming back into the room |
question
| Prior to carrying out a service/inspection on a gas boiler, what external visual checks should be completed |
answer
| Combustion air requirement and provision, location, and signs of distress, Fluing requirements and provision |
question
| When inspecting the grill burner of many hobs what are we visually inspecting? |
answer
| Flame Picture, Burner condition, air path in and combustion exhaust path clearance |
question
| In terms of ventilation for a flueless cooking appliance what is the minimum room volume permissible without a purpose provided vent so long as an openable window is present? |
answer
| 10m3 |
question
| When testing the oven thermostat it is essential that |
answer
| The flame remains at maintenance level and doesn't extinguish when the oven temperature has been reached |
question
| What is the purpose of the flame supervision device on a gas oven burner assembly |
answer
| To prevent the oven filling with a dangerous level of gas during the lighting process |
question
| On a hotplate fitted with a flame failure safety device, what is the maximum permissible shut off time you would permit in th e absence of the manufacturers instructions ? |
answer
| 90 seco[image]nds |
question
| The most common safety tests you may carry out on a gas hotplate are? |
answer
| Burner pressures, High and low flame stability, flame pic, control tap ease of movement and shut off, shut off device on any glass lid when closed |
question
| What is the minimum permissible distance alongside a tall cupboard that a gas hob can be installed? |
answer
| 50mm[image] |
question
| What is the minimum permissible distance between a grill hood and any heat sensitive materials above (i.e. cupboard)? |
answer
| 610mm[image] |
question
| How far should a stability bracket extend into the rear retaining slot of a cooker to be useful? |
answer
| Approx 90mm [image] |
question
| Which of the following is not directly relevant to the safe installation of a natural gas cooking appliance? |
answer
| A Carbon Monoxide Detector should be installed when a Range Cooker is installed |
question
| Unless the manufacturer states otherwise and in order for this DFE appliance to safely and adequately clear its products of combustion what is the required amount of purpose provided ventilation ? |
answer
| 100cm2[image] |
question
| When installing a hearth for a gas fire installation the following dimensions apply |
answer
| Thickness 12mm, Depth 150m, Edge of fire to edge of hearth 300mm, Height around edge 50mm |
question
| A purpose provided Hearth must? |
answer
| Have a thickness no less than 12mm to avoid heat transfer of over 80 degrees C. |
question
| A spillage test on the open flued gas fire is to confirm the adequate and safe removal of combustion products from the applia nce through the flue system to the external air. The appliance must be tested for spillage. |
answer
| Strictly in accordance with the manufacturers instruction |
question
| What is the minimum permissible distance between a fire spigot and the chair brick or Catchment rear wall |
answer
| 50mm[image] |
question
| Where the flue spigot on a fire needs extending, the length of any such extension must not exceed how far beyond the rear of the fire |
answer
| 150mm[image] |
question
| Where a single walled flue pipe is subject to the formation of condensation caused by products of combustion, the problem may be prevented by |
answer
| Replacing the single-walled flue pipe with insulated twin-wall flue pipe |
question
| Where a guard has been sited to a chimney to stop the problems caused by nesting birds, the guard shall have openings of not more than... |
answer
| 20mm[image] |
question
| In addition to sealing the flue liner within a builders opening, it is also essential that any other gaps, such as side entry pipework and any holes must also be sealed to prevent which of the following from occurring |
answer
| Flame distortion caused by excessive air movement under the fire |
question
| Push-fit fittings shall conform to which of the following British Standards |
answer
| BS 669 - 1 or BS 7838 |
question
| Where pipework carrying gas is installed within timber construction walls, it must be... |
answer
| Constained within purpose-designed channels or ducts |
question
| Where the domestic installation pipe size exceeds 35 mm copper, DN32 steel or the installation volume exceeds 0.035mA? the procedure for gas tightness testing can be found in: |
answer
| IGE/UP/1 or IGE/UP/1[image] |
question
| When purging installations with an installation volume exceeding 0.02m?... |
answer
| Continually attempt to ignite the purge mixture at an open burner |
question
| When a decorative fuel effect fire is installed in a room which also contains oil or solid fuel appliances, these appliances... |
answer
| Shall be treated as if they are gas appliances |
question
| Where an air vent providing combustion air to an appliance is fitted either in the floor or the ceiling, the underfloor or roof space with which the vent communicates |
answer
| Must contain ventilation of at least the same free area fitted direct to outside |
question
| The recommended methods of notification and notification criteria for 'Not to current standards (NCS) are... Which of the following statements is false? |
answer
| When notifying categories 1 & 2 situation, it is recommended this be done orally |
question
| If the correct warning notice is not fitted to a primary meter, the gas operative must inform the ..? |
answer
| The gas transporter. |
question
| Range rated appliances must incorporate which component within their design? |
answer
| A constant pressure governor. |
question
| Which of the Gas Safety Regulations compels the operative to use a temporary continuity bond where necessary? |
answer
| Regulation 10.[image] |
question
| What is the approximate volume of air required to completely burn 5 m3 of natural gas? |
answer
| 50 m3 |
question
| Which is the minimum concentration of carbon monoxide within the air that will cause occupants to fall victim to coma within a few minutes? |
answer
| 0.4%. |
question
| The ventilation requirement for open flued appliances is dependent upon..? |
answer
| Heat input |
question
| If the correct warning notice is not fitted to a primary meter, the gas operative must inform the..? |
answer
| The gas transporter. |
question
| The purpose of the top vent installed within a compartment is to? |
answer
| Remove warm air for cooling. |
question
| E6 Meter 28mm Pipe Existing with appliances connected Allowable Pressure Drop is |
answer
| 8[image]mb |
question
| E6 Meter 28-35mm Existing with appliances connected Allowable Pressure Drop is |
answer
| 4mb[image] |
question
| U6/G4 28mm Existing with appliances connected Allowable Pressure Drop is |
answer
| 4mb[image] |
question
| U6/G4 28-35 Existing with appliances connected Allowable Pressure Drop is |
answer
| 2[image].5mb |
question
| U16/G10 28mm Existing with appliances connected Allowable Pressure Drop is |
answer
| 1mb[image] |
question
| U16/G10 35mm Existing with appliances connected Allowable Pressure Drop is |
answer
| 1mb[image] |
question
| New Installations With or without appliances |
answer
| NPM on gauge No smell of gas[image] |
question
| Existing (Pipework only) |
answer
| NPM ON THE GAUGE NO SMELL OF GAS[image] |
question
| It is a legal requirement to install gas appliances in accordance with the manufacturers instructions. Which regulation states this? |
answer
| Regulation 33[image] |
question
| A Gas Cooker or Hob Can be Installed in a Bedroom (Bed Sit). However the room volume must.... |
answer
| exceed 20m3 |
question
| Riddor regulation 11(1) requires any ID incidents to be reported within |
answer
| 2 hours of attending an incident and reported online within 14 days |
question
| In order to avoid condensation, twin wall flue pipes with only an air gap for insulation, should not be used externally for lengths in excess of? |
answer
| 3m[image] |
question
| If the correct warning notice is not fitted to a secondary meter, the gas operative must inform....? |
answer
| The occupier and/or landlord |
question
| What action should be taken when you have classified an appliance as at risk? |
answer
| Turn off the appliance with customer permission |
question
| You have been called to a fanned draught boiler which heats up to approximately 50oC. The appliance then 'cuts out' and will not re-light without manual re-setting. The control thermostat is set at 70oC and appears to be operating adequately. What is the likely cause of the problem? |
answer
| Overheat thermostat is faulty. |
question
| A flueless heater is to be installed in a conservatory measuring 3.0 m x 2.5 m x 2.4 m. Calculate the maximum rated input of heater which may be installed: |
answer
| 0.81 kW |
question
| Open Flued Appliance COMPARTMENT Venting to OUTSIDE |
answer
High Level 5cm2/kW Low Level 10cm2/kW In Room-NIL [image] |
question
| Open Flued Appliance COMPARTMENT Venting to ROOM |
answer
| High Level 10cm2/kW Low Level 20cm2/kW Room Vent-Max Heat Input(net)-7kW x 5cm2[image] |
question
| Open Flued Appliance ROOM |
answer
| Max Heat Input(Net)-7kW x 5cm2 |
question
| Room Sealed Appliance COMPARTMENT Venting to OUTSIDE |
answer
| High Level-5cm2/kW Low Level -5cm2/kW In Room-NIL[image] |
question
| Room Sealed Appliance COMPARTMENT Venting to ROOM |
answer
| High Level 10cm2/kW Low Level 10cm2/kW In Room-NIL[image] |
question
| Room Sealed Appliance Room |
answer
| No Vent Required[image] |
question
| Ventilation NET Heat Input Value |
answer
| Divide the gross value by 1.1 |
question
| Adventitious Ventilation |
answer
| Air that can leak into buildings through windows,doors,floorboards walls etc |
question
| DFEF |
answer
| No allowance can be made for adventitious ventilation |
question
| Intumescent Air Vent |
answer
| Specially designed to prevent spread of fire. Normally an insert with metal framework,open latticework of heat sensitive material |
question
| Design width of Vent grill |
answer
| Permits entry of a ball of 5mm diameter but prevents entry of a ball of 10mm diameter |
question
| Installation of a vent in internal wall or door |
answer
| No greater than 450mm from floor level |
question
| Fluess appliance ventilation requirements |
answer
| Consult M.Is or table in BS5440-2 Any air vent required must be direct to outside |
question
| Ventilation for flueless space heater in a ROOM |
answer
| 1.Convert kW to Watts by x the net heat input by 1000 2.Then DIVIDE by the volume of the room Answer must be 45W/m3 or less |
question
| Gas Fired Appliances Minimum Flue Diameter is |
answer
| 125mm[image] |
question
| An existing gas appliance whose ventilation and fluing requirements are found to comply with the British Standards but not with the MI (Manufacturers Installation Instructions) Is deemed ....? |
answer
| Unsafe for use |
question
| Manufacturers Installation instructions primarily have priority over the British Standards |
answer
| True[image] |
question
| It is a legal requirement to install gas appliances in accordance with the manufacturers instructions. Which regulation states this? |
answer
| Regulation 33 [image] |
question
| How would you categorise a Flexible gas connection on a flued appliance? |
answer
| AR (at risk)[image] |
question
| How would you categorise.. Pipework failing a gas tightness test ? |
answer
| ID (immediately dangerous)[image] |
question
| When faced with an Immediately Dangerous installation, The GIUSP states that if the customer does not agree to the installation being disconnected, the engineer should... |
answer
| Report it immediately to the ESP and obtain the ESP's reference number |
question
| Riddor regulation 11(2) Requires gas registered business and engineers to report... |
answer
| Immediately dangerous situations that pose a threat to life, consciousness or lead to hospitalisation |
question
| Purpose provided ventilation for a flueless appliance must communicate directly with the outside air, whether directly or via a duct. |
answer
| [image] |
question
| what category of unsafe classification would you place a flueless gas cooker installed in a kitchen 7M3 with an openable window no openable door to outside and no additional ventilation provision. |
answer
| AR[image] |
question
| When installing a gas pipe within a builders opening it is required to be? |
answer
| protected against corrosion [image] |
question
| Complete combustion of natural gas results in the production of?? |
answer
| [image] |
question
| 'It is a contravention of The Gas Safety (Installation and Use) Regulations to falsely pretend to be a member of a class of persons approved by the Health and Safety Executive'. Is this statement True of False? |
answer
| [image] |
question
| The minimum volume (or capacity) of the catchment space for an inset type of gas fire, fitted to a lined masonry chimney, previously used for a gas appliance is: |
answer
| 0.002m3 (2 litres) |
question
| Double walled metallic flue systems used for gas appliances should comply with EN 1856 and may be manufactured with an aluminium inner liner True or False? |
answer
| [image] |
question
| During a routine inspection of a gas appliance a dangerous fault is located. Which Regulation defines the procedures to follow |
answer
| [image]Regulation 34 |
