as/nz wiring rules 3000:2007 (PDF) - Energy Safe Victoria

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20Qsand Ascontents.Q Can I use two flexible hoses from a coppermanifold as consumer piping if each hoseconnects to one appliance only. The hoseswill be installed inside the caravan forprotection?A The answer is no. The use of a hose asconsumer piping is only permitted forconnecting one appliance.Q If I can install multi-layer (composite) pipingabove ground as long as protected fromUV rays, why can’t I install UPVC aboveground?A The middle layer of composite piping is metal,and has been accepted for above grounduse. UPVC has no metal component andhas not been accepted for above grounduse. A number of incidents have occurredwhen UPVC has been used (illegally) withinpremises and fittings have been snapped off.Q We wish to install a by-pass around a safetyshut-off system in the consumer piping forservicing purposes.A You would have to formally apply to ESVfor acceptance to install the by-pass.Acceptance would only be given in caseswhere continuation of gas supply is essential,eg in hospitals and some institutions etc.ESV would require details ofAre you feelingthe pressure?This article was written by KevinNathan, an ESV Type B Gas Inspector.Pressure test points are one of the gasfittersmost useful aids. They provide access to theconsumer piping and valve train for the testingof supply pressures, setting of burner pressuresand components, such as regulators and lowpressure cut-off devices, etc.The use of pressure points is also essentialduring commissioning to ensure the correctfunction of regulators, safety shut-off valvesand leakage detection systems etc.It is important to note that AS 3814 Industrialand commercial gas-fired appliances, Clause2.12.3 states that -A gas pressure test point shall be provided witha means of sealing the outlet and, where theoperating pressure exceeds 7 kPa, it shall be ofa self-sealing type or fitted with a manual shutoffvalve.The following photographs show the correctand incorrect use of test points at pressuresgreater than 7kPa.A filter operating at 70 kPa andinstalled upstream of an OPSOregulator. The test pointsfitted to the filter are selfsealingand comply with Clause2.12.3ESV Gas Inspector KerryMarshall gives a safety talkon the Mornington Peninsulagas safety onthe MorningtonPeninsulaDuring the Christmas holidays, theMornington Shire Council, CFA andESV gave a number of safety talks toholidaymakers along the MorningtonPeninsula foreshore from Sorrento toRosebud.ESV Gas Inspector Kerry Marshall spokeon the safe use of gas when camping.This has become an annual eventand the talks are well-receivedby the campers with a number ofquestions being raised and answered.Occasionally, visits to some particularsites are made to indicate and explainwhat is or isn’t safe.www.energysafe.vic.gov.au> A written procedure for by-passing theshut-off system.> The nominated key holders for any by-passlock.> Details of safety procedures preventingunauthorised use.Q I am installing a cooktop and the wallbehind is of a material called Caesar Stone.Is this classed as a fire resistant material?A Caesar Stone is reconstituted stone with abinding compound that does not meet therequirements of AS 5601 Appendix C. Aclearance of 200 mm is required from thenearest burner.Gas Technical Help LineCalls made to the Gas Technical Help Line (1800652 563) are now handled by ESV’s Call Centreat Southbank. Details are then emailed to theduty inspector who contacts each caller in turnand answers the enquiry.Although most calls can be answered quickly,you may be asked to provide further written,faxed or emailed information for more complexenquiries.UV protection of multi-layer pipeAs explained in last edition of energysafe,gas companies are notifying ESV of installationswhere multi-layer pipe has not been protectedfrom the effects of UV.ESV has sent a number of warning letters tooffending installers. Generally, the notificationapplies to the short amount of pipe betweenthe meter assembly and the wall penetration.A similar filterfitted with testpoints thatare not selfsealing, and arenot acceptable.formalinterpretationpublishedA request for a formal interpretationregarding required clearancesfrom a gas meter to a source ofignition has been provided and wassubsequently published on the ESVwebsite.For this and other formalinterpretations, go to the ESVwebsite at www.esv.vic.gov.auand, under Gas Professionals, findthe tab Technical Info Sheets forGasfitters, and then the tab forInterpretations.This year the CFA noted that a numberof electrical extension leads were inpoor condition and advised the campersto have them checked or replaced.gas terminologyand requiredactionESV is using the following terminologyfor gas installations where there iscause for concern:> Immediately DangerousAn installation that, if left operating, willcause injury, death or property damage.> At RiskAn installation that if left operating is likelyto cause injury or damage to property.> Not to standardAn installation that does not comply withcurrent standards, but is unlikely to causeinjury or damage to property. Includes thosecompliant with requirements at the time ofinstallation but which are operating safely.Some examples were provided in an earlieredition of energysafe.Installers or service contractors comingacross any Immediately Dangerous or At Riskinstallations should advise the owner andmake safe the installation. If permission tomake safe is not given, the details are to bereported to the National Response Centre(NRC) on 9411 3111. NRC will arrangefurther action.
urgent recallfor pool andspa heatersRaypak Australia Pty Ltd has issuedan urgent nationwide recall noticefor pool and spa heaters installedafter 1 July 2005.There are about 5000 of the heaters inquestion in Australia, 3000 of them in Victoria.Heaters with a built in control panel asillustrated in the recall notice are likely to beaffected. Water inadvertently entering the unitcould lead to a partial malfunction of the overtemperaturethermostat control resulting in arisk of scalding.Raypak have provided a toll free number –1800 063 018 – for consumers. On site servicemodifications will be carried out to eliminatethe potential for the malfunction.Meanwhile, owners of spas, fully enclosedindoor pools, plunge pools or small lap poolswith the units should disable them until repairsare carried out. For other pools, the unit shouldbe turned off and water temperature checkedbefore anyone gets into the water.See www.recalls.gov.au for Australian ProductRecall Information.Don’t forget to tell us what you would like to particularlysee in energysafe. Contact us by fax at (03) 9686 2197,or by email at info@esv.vic.gov.auman injuredwhen newbbq eruptsinto flamesESV was called in by the CFA to investigate anincident at Frankston recently after a 70-yearoldman received serious injuries when hisbrand new BBQ erupted into flames.The victim was taken to Frankston Hospitalsuffering burns to his right leg, arms and face.He also experienced breathing difficultiesafter his airways were damaged.The flames extended up to the roof of anexternal patio area, while the heat affectedhanging plants adjacent to the BBQ.When interviewed by ESV, the victim saidhe bought the new BBQ from a store inFrankston and paid an additional $70 for itto be assembled by a specialist company.The BBQ was assembled and the victim wasprovided with a brief demonstration on how tooperate it. Later in the day he decided to usethe appliance, followed the instructions hehad been given and activated the igniter.The BBQ then erupted into flames, The CFAattended to put out the fire and the victimwas taken by ambulance to hospital.During its inspections of the BBQ, ESV foundthat the POL screwed connection into thecylinder valve was loose. This threaded brassPOL connection could be hand tightened intothe cylinder valve socket an additional one andone half revolutions.ESV’s investigations included interviews withrepresentatives of the assembly companyand its contractor who assembled the BBQin question.21SUMMER/AUTUMN 2008 ISSUE 11thepotential ofproducingelectricityfrom hotrocksExploration work is already underwayin parts of Victoria assessing thepotential for producing base loadelectricity from naturally occurringsubterranean heat – in other words“hot rocks”.Permits for exploring geothermal energysources were awarded in 12 areas to fivecompanies last year, with a further 19 permitsto be offered in April this year, the Ministerfor Energy and Resources, Peter Batchelor,announced just before Christmas.He said the five companies already awardedpermits had committed to spend more than$64 million over five years, with work alreadygetting underway in Gippsland.“The next tranche of permits will allowcompanies to search for geothermal energypotential across more than 154,000 sq km ofVictoria previously unexplored.“In the last two years, the number ofcompanies exploring for geothermal energysources in Australia has doubled.“This second release of permits will help ensureVictoria’s geothermal potential is realised,” saidthe Minister.He said the geothermal industry in Victoria hadhuge potential and was entering an excitingperiod of growth.Apart from reducing dependence on carbonemitting forms of electricity generation,producing baseload power from naturallyoccurring subterranean heat will boost regionalcommunities and the State economy.“The geothermal industry is still in the earlystages of development in Victoria. TheState has abundant renewable resources,but at this stage, renewable energy onlyaccounts for around four per cent of electricityconsumption,” he said.In hydrothermal geothermal systems, deepgroundwater that has been naturally heated tosteam temperatures is brought to the surfaceand used to turn turbines.In dry rock systems, water is injected into hotrocks and returned to the surface once heated.
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as/nz wiring rules 3000:2007 (PDF) - Energy Safe Victoria

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