Information
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Audit Title
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Job Description
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Location
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Conducted on
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Prepared by
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Contractor(s)
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Work Group (name of crew leader & members)
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Auditor(s)
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Additional Representative(s)
Prior to Commencing Work SWP 2.1, SWP 2.5, MG MA E0.001
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Have you checked for Life Support Customers in today’s work area, and was it safe to proceed with works?
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Do all personnel have MG passports on site?
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Is all training, authorisations and qualifications current for the functional role of the passport holder including contractors (e.g. traffic management)?
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Are all relevant SWMS on site?
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Has the JSEA/risk assessment identified site specific risks, been signed and dated by all crew members and have SWMS been identified for the task?
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Are all identified risk control measures on SWMS and JSEA/risk assessment in place?<br>Are required high risk work permits and associated checklists in place?
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Has the Traffic/Pedestrian Management Plan been identified/created and available on site and documented on the JSEA/risk assessment?<br>Has traffic management been implemented and have any changes been recorded on the JSEA/risk assessment?
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Is PPE in accordance with Multinet Gas as a minimum and Service Providers expectations and within inspection/ replacement dates?
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Does the excavation / manhole have appropriate support / effective engineering controls (i.e. battered, shields, shoring, etc)?<br>Is the excavation / manhole large enough to work in comfortably and has safe entry/exit been provided (e.g. ladder and consideration for emergency situations)?
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For deep excavations – Has a permit been authorised by the Supervisor and notification made to WorkSafe?<br>Is the excavation being monitored during work and controls in place for unmanned work?
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Are field employees aware of the emergency plan and is emergency equipment readily available?<br>Extinguisher located up wind and accessible to the worksite (SWP 2.5)?<br>Is the extinguisher with-in test date?
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Have environment impacts been considered on the risk assessment, i.e. waste, water (including syphon water), soil management, sediment control, contamination, emission, flora (incl tree mgt) and fauna, heritage? Refer to MG MA E0.001, Environmental Field Manual – Guidelines<br>Has risk / contamination been effectively controlled?
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Have all hazardous chemicals / substances (including asbestos) been managed and disposed of as per expectations and SWPs by competent and trained persons (SWP 2.11)?
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Have sources of ignition been eliminated from work area?
Locate and Prove Assets SWP 8.1
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Have the 5Ps been utilised effectively?<br><br>Plan – has planning been completed prior to work commencing – identify risk / controls to be implemented (including DBYD plans, no go zone rules)?
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Prepare – have trained and competent (DBYD class/field certified) employees been utilised to identify underground assets – using approved DBYD locators?
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Pothole/Prove – has Potholing been used to establish the exact location of the asset?
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Protect – has the infrastructure been protected by – marking assets, identifying exclusion zones, placing barriers and communicate effectively?
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Proceed – has work proceeded with all the above risk controls in place?
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Have underground assets been documented on asset location sheet and Supervisor been advised of high-risk scenario (including HV checklist)?
Specific HSE Checks SWP 1.4, SWP 1.5, SWP 1.7, SWP 2.4, SWP 2.8, SWP 2.9, SWP 2.10, SWP 2.11, SWP 2.14
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Does the task require entering and working in a confined space and, if so, are the personnel competent and compliant (SWP 1.5)? <br>(check passports and ‘prior to work checks’ have been completed)<br>o Is rescue equipment on site?<br>o Has an entry permit been used correctly?
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Are all persons required to work in a gaseous environment trained and competent in the operation and care of respiratory protection?<br>Is the correct respiratory protection being used? <br>(check passports and ‘prior to work checks’ have been completed) <br>Has the following been considered?<br>o Are there adequate personnel on site?<br>o Have ignition sources been addressed<br>o Is there adequate ventilation to disperse contaminants?<br>o Has a standby been appointed?<br>o Is the B.A equipment and fire extinguisher manned?<br>
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Has the worksite, all excavations and trenches been secured safely (i.e. signs, barricades, exclusion zones, fencing, plates) when unattended (including overnight)? (SWP 2.4)
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Has a designated rest area been assigned?
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Has the Jeavons J106 regulator been handled and disposed of appropriately as per SWP 2.14?
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Is all electrical equipment calibrated and within test and tag dates?
Electrical Tests SWP 2.13
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Is the gas meter location in accordance with engineering standard ES-DD-4352?
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Has service pipe and gas meter assembly been tested to ensure it is not ‘electrically’ live using an approved voltage tester (SWP 2.13)?
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If voltage is detected – was area restricted, consumer informed, power isolated, supervisor contacted (SWP 2.13)?<br>Note: Do not carry out any work until fault has been determined.
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Has the meter been disconnected using cross bonding leads (SWP 2.13)?
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Have wet rags been used where required to eliminate static?
Removal of Pipe Coatings from Steel Mains SWP 1.11
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Has pipe area been clean, cut and scrape to expose mastic?
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Removal of coating – asbestos containing material <br>- Has appropriate PPE been used to remove coal tar enamel?<br>- Has wastes been collected (double bagged) and made ready to transport to depot for disposal?
Safe Work Practice When Conducting Maintenance and/or Repairs on Pipelines, Mains or Services SWP 2.1
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Had a dry chemical fire extinguisher been placed correctly?
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Have the plans been used to identify the type and location of the gas assets?
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In the case of a damage or escape has the gas cloud been assessed?
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In the case of a damage or escape has the wind direction been identified?
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In the case of a damage or escape has the need for respiratory protection been addressed?
Low Pressure Bagtube Equipment SWP 7.2 stopping-off gas in 80mm to 150mm P.V.C., cast iron, and steel mains
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Were the bags and associated equipment<br>- Within expiry date?<br>- Inflated to pressure to check for leaks?<br>- Setup correctly?
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Was Manometers setup correctly and mains pressure recorded?
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Was Tapping Saddles fit to PVC Main correctly?
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For Steel mains were Quarter Socket Welded to the main in the correct tapping positions?
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For all pipe types - was the base valve mounted appropriately?<br>- PVC – Wask tapping saddle<br>- Steel – Quarter sockets welded to the main<br>- Cast – Tapped directly
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Was the of Tapping machine assembled (and removed) correctly?<br>- All O-rings greased prior to use<br>- The Base valve operation and condition checked<br>- Tapping completed as SWP 7.2<br>- The hole-saw cleaned and checked between tappings
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Was main inspection and cleaning completed appropriately?<br>- Viewing plate fitted and visual Inspection of the Interior of Main<br>- Mains Cleaning Head Fitted to Base Valve<br>- Rust, Scale, scraped from Bottom of Main<br>- Re-Inspect Cleanliness of Interior of Main
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Was each Bagtube installed in the main using the base valve and housing?
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Was a By-pass assembled and established correctly?<br>By-pass purged to 100% G.I.A before commissioning?
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Was a venting assembled and established correctly with both sides of the stop being vented to a purge stack?
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Was mains gas flow restored correctly?<br>- Repaired section of main purged <br>- Repaired section of main pressurized and soap tested<br>- All bags deflated <br>- By-pass vents closed<br>- By-pass depressurised to decommission <br>- All bags withdrawn from the main and vents closed <br>- By-pass, vent hoses, fittings and tees removed from bagtubes.<br>- Bag tubes removed using the Wask Base plate and housing<br>- Main or Saddle plugged using the Wask Base plate and housing<br>- Manometer removed from Main and the hole sealed with the appropriate brass screw, Teflon tape and thread seal.
Wask 312 – Stop off SWP 7.3
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Is all required equipment including nitrogen and sufficient personal on site?
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If the equipment is being used on medium pressure, is it operating within the guideline of the maximum operating pressure for the size of main being stopped?
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Has preparation or bladder and bag tubes been completed including:<br>- Bags within expiry date?<br>- Bladders pressure tested and checked for soundness?<br>- Correct nose piece and shoe selected?<br>- Direction pointer been set and position of bladder adjusted?
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Have the mains been prepared for tapping by:<br>- Cleaning (removed excess rust, scale etc.)?<br>- Marking out tapping locations on the main?<br>- Quarter sockets arc welded to steel main?
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Has appropriate size hole saw been fitted to assemble tapping spindle?<br>Has approved grease been applied to internal ‘O’ ring at the top of tapping head?
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Has visual inspection of the interior main taken place?<br>Has the the main been cleaned to displace rust, scale if required? <br>Has visual re-inspection of the interior of the main taken place after cleaning?
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Have completed bag tube assemblies been installed in the housings and fitted to bases valves?
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Has By-pass been established:<br>- Purged to 100% G.I.A and commissioned?<br>- Pressure monitoring installed as per procedure?
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Have bladders been inserted and inflated in sequence as per procedure?
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Was a venting assembled, established correctly with both sides of the stop being vented to a purge stack?
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Was gas flow restored correctly?<br>- A ryder hose fitted to feed gas to the new/repaired section<br>- Repaired section of main purged 100% G.I.A<br>- Repaired section of main pressurized and soap tested<br>- All bags deflated, withdrawn from the main and sandwich plates closed<br>- Pressure monitoring probes removed and By-pass sandwich plates closed<br>- By-pass depressurised to decommission <br>- By-pass, vent hoses, fittings and tees removed from bagtubes.<br>- Bag tubes and housings removed from the Wask sandwich plate.<br>- Main plugged using the Wask sandwich plate and housing
Williamson Short Stop 2 Drilling and Plugging Equipment 32mm - 100mm MG SWP 7.13 To drill and stop-off 32mm – 100mm steel mains up to 515 kPa in pressure, when conducting mains alteration, cut-out or tie-in using approved fittings NOTE: The use of short stop 60 Williamson equipment is not permitted under any circumstance on MGN without written approval from Multinet.
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Has main been prepared adequately including: <br>- Adequate excavate of manhole?<br>- Remove coating from main where fittings are to be welded?<br>- Remove completion plug from fitting and Fitting cap replaced?<br>- Arc weld fitting to main?
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Shortcut Valve For 32mm to 80mm <br>Has the Short Cut Valve preparation been completed adequately including: <br>- Has valve operation been checked? <br>- Has the valve been mounted with the equalization valve main side down?<br>- has dimension H measurements been record on measuring card?
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Shortcut Valve For 100mm <br>- Has valve operation been checked? <br>- Has the valve been mounted <br>- Cast iron Type with the equalization valve main side down?<br>- Aluminum Type the casting machine side up, facing up?<br>- has measurement H been taken and record on measuring card?
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Was the completion plug installed using the machine to test the fit of the plug before tapping?<br>- Was the fitting pressure tested?<br>- Was measurement G taken and record on measuring card?<br>- Was the setting distance calculated and marked on the control shaft?
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Has the main been Drilled correctly as per SWP including <br>- Have measurement A, B and the tapping distance been taken and recorded on the measurement chart?<br>- Is the correct sized holesaw been selected and prepared?<br>- Was the coupon retaining wire checked?<br>- Has the coupon been retrieved from the hole saw?
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Has the main been cleaned adequately using the operation of the chip sweep?<br>- Has the main been swept in three directions?<br>- Has the bur been removed from the tapping using the chip sweep?
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Has the Sealing Element been prepared and selected using the sealing element table?<br>- Were the measurements required to enable the setting of the sealing elements taken and recorded?<br>- Was the coupon measured to enable the selection of the correct sealing element?
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Is mains pressure being monitored using fitted SCADA gauges?
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Has a by-pass assembly been fitted adequately and purged to 100% G.I.A prior to commissioning?
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Has the By-Pass been commissioned?
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Has the operation of the down-stream Sealing Element to Stop-Off been completed?
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Have both SCADA gauges been monitored for 15 minutes to ensure the By-pass is maintaining supply?
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Has the operation of the upstream Sealing Element to Stop-Off been completed?
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Has the main been depressurized using the downstream skinner tee through a purge stack?
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Has a 5 way bar hole test been carried out prior to cut out?
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Has cross bonding leads been fitted and the required section cut out?
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Has the new section and welding band been fitted?
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Has the upstream skinner been tapped and the new/repaired section been purged to 100% G.I.A?
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Has 250 to 500 pascals for feed been setup to enable welding?
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Has the alteration/ damage been welded and cooled?
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Has downstream skinner been shut down and the new section pressurized and soap tested?
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Has the Sealing Cup been removed from the main?
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Has the thread Cleaning Brush (32 - 80mm) been used correctly?
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Has the installation of the completed plug been fitted correctly?
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Have all components been:<br>- Cleaned, greased and stored?<br>- Replaced in working order – if not, has a maintenance check been completed?
Polyethylene Squeeze-Off SWP 7.16
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Prior to mechanical squeeze off device being used - has by-pass requirements been established with MG?
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Is the location of the squeeze off a minimum of 300mm for pipe up to and including 63mm and for pipe larger than 63mm 5 times the pipe diameter from a fitting, joint or previous squeeze off and a safe distance from the repair?
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Has the pipe been squash off completed at two points as required to isolate the damaged section?
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Has the squashing device been centred?
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Have the limiting stops been set to suit the pipe size?
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Has pipe been check for 100% shut off at the point of damage by:<br>- If 100% stop is not complete, has a second squash been put in place with a venting tee between the two squash points?<br>- If two squashes have been used has the correct amount of clearance been allowed between the squash points and the fitting?
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Have wet rags been placed over pipe for earth static charges?
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Have mechanical squeeze – off been removed as per MG requirements?<br>The squeeze off device has been released at the required rate (10mm per minute)?
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Has a repair clamp been fitted to the squeeze off area?<br>Has the repair clamp been tensioned as per manufactures requirements?
Flaring off using purging equipment When commissioning or decommissioning gas mains and services SWP 1.10
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Were the following precautions / tasks completed to ensure for the protection of personnel, constructions and the public?<br>- Warning signs are in place. <br>- Purge stack to an earthed. <br>- 100% G.I.A been achieved <br>- Monitoring equipment approved and calibrated and operated by a suitably trained person.
Electrofusion MG SWP 5.8
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Electrofusion Preparation<br>Has electrofusion preparation been completed correctly including:<br>- Pipes cut square with approved cutters and burns removed?<br>- Electrofusion fitting placed correctly and marked?<br>- Pipe cleaned (using approved paper towel)?<br>- Pipe scraper used to remove the surface of the pipe within the fusion area?<br>- Were the line-up marks still visible after scraping?<br>- Was the prepared end protected from the environment?
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Pipe Connection<br>Have pipes connections been checked for cleanliness, alignment and cooling times adhered to?<br>• Has pipe been laid with the manufacturer identification details on top?<br>• Has the electrofusion fitting been aligned correctly – up to line up mark?<br>• has the second pipe end been aligned correctly – up to line up mark?<br>• Have line-up clamps been secured around pipes to be joined?<br>• Has the fusion time on the fitting been checked?<br>• Has the generator output been checked for correct kVa?<br>• Has the correct type of electrofusion control box been utilized?<br>• Has operator name, date and cooling time been recorded on the pipe?
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Has the correct process been used to complete electrofusion fusion cycle:<br>• If fittings are manual, was correct fusion times selected?<br>• Correct fusion and heating time used?<br>• Fusion left undisturbed during cooling time?<br>• Joint inspected for “melt indicators”?<br>• Did the operator exit the excavation before starting the fusion process?
Manual Butt Fusion of Straight and Coiled Polyethylene pipe and Fittings 63mm in Diameter MG SWP 5.7
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Has 25mm been remove from the ends of new lengths of pipe being fused?
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Was the heating time for butt fusion observed?
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Was paper towel used to clean the heating faces of the irons and the facing tool?
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Is heating iron is at 220 degrees?
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Are the teflon surfaces in good condition?
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Was an initial bead formed on both pipe ends before commencing the 40 second heating time?
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Was an appropriate safe timing device used to count the 40 second heating time?
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Have the pipe ends been brought together with sufficient pressure to form the correct bead?
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Did the pipe remained undisturbed in the clamp for 2 minutes until sufficiently cooled to be moved?
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Was fusion cooling time period completed? (15 minutes)
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Was the fusion joint visually inspected and deemed to be satisfactory?
Saddle and Socket Fusion Saddle Fusion of PE Service Tees MG SWP 3.5 Socket Fusion of Pe Pipe and Fittings MG SWP 3.6
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Has the correct size tee been selected to suit the main and service pipe?
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Has the clamp and service tee been installed onto a cleaned and prepared main and service tee? (Saddle & Socket Fusion)
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Is fusion & all electrical equipment been maintained, within calibration, within electrical test dates and in serviceable condition?
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Is heating iron is at 220 degrees?
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Has the 3 second test pattern been completed prior to performing saddle fusion?
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Was heating iron placed on main with the clamp service tee down for the correct time period? (40 seconds - using timing device)
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Was fusion cooling time period completed? (15 minutes)
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Was the pipe being socket fused held in position after fusing for 1 minute to allow cooling?
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Were the cold ring pliers used?
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Was the correct heating time observed?<br>(10 seconds)
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Was the stiffener used correctly?<br>- Protruding 3mm on 16mm pipe<br>- Inserted flush with the end for all other pipe
Mains Tie In
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Mains Tie-In Three Way Equal Tee<br>Has a purge plan been approved by Multinet Gas as per Engineering Standard 4090- Purging for Commissioning of Transmission and Distribution Pipe?
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Has the three way tie in been completed correctly, including:<br>- Area to be cut been marked out, measured and the three-way equal tee and pup pieces been prepared prior to cutting the main?<br>- If working with plastic pipe have wet rags to earth been including to control static?<br>- If required have tapping tees been fused in appropriate locations as per SWP?<br>- Have all fused tees been tested prior to tapping?<br>- Have all electro fusion couplings or steel pipe welding been completed as required?<br>- Where indirect purging is required, have fittings and pipe been connect to the inert gas bottles?<br>- Has purging be conducted and controlled through tees/valves?<br>- Has purge stack/s control valves been closed and necessary bypass, purging and isolating activities been completed as appropriate?
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Has Operator name, date and required information been noted on the joint?
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Has Operator name, date and required information been noted on the joint?
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Has the main been commissioned in accordance to the approved commissioning plan?
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Tie-In to a Mains Extension<br>• Has a purge plan been approved by Multinet Gas as per Engineering Standard 4090- Purging for Commissioning of Transmission and Distribution Pipe?<br>• Has mains extension tie-in been completed appropriately?<br>• Have the required purge tees, SCADA tees and tees for inert gas been installed prior to the commencement of the tie-in?<br>• Has area to be cut been marked out, measured and preparing the tie-in pipework prior to cutting and static eliminated?<br>• Has purge stack/s control valves been closed and main Purged and isolated?<br>• After completing works in ‘isolated section’ has new tee assembly been Electrofused as per SWP 5.8?<br>• Has Operator name, date and required information been noted on the joint?
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Has the main been commissioned in accordance to the approved commissioning plan approved by MGN?
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Where a by-pass has been used to enable the tie-in:<br>- Has bypass been isolated, depressurized decommissioned and removed successfully?<br>- Has the pipe been squeezed and secured as per SWP?<br>- Have SCADA gauges been decommissioned, disconnected and removed?<br>- Has the end cap to the branch of each bypass tee been electrofused? <br>- Have joints and caps been soap tested for leak and where a leak was detected was it repaired?<br>- Has copper tracer wire connected?<br>- Has backfilling / reinstatement been completed effectively – meeting property owner, Local Government authorities and Vic Roads requirements?
Tie-in of High Pressure Steel Mains MG SWP 5.5
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Have the required Williamson fittings been welded a minimum of one metre from the tie-in point?
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Was a Skinner tee welded a minimum of 300mm downstream of the Williamson Shortstop?
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Was the welding band installed correctly?
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Was the new section of pipe being tied in purged to 100% gas in air prior to welding?
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Was a constant gas feed of 250 to 500 pascals setup using a manometer?
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Was the new section of main being tied in pressurized after welding and all welds soap tested?
Connections and Tie- Ins of Polyethylene Mains to Steel MG SWP 5.9
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Was a poly to steel transition piece used?
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Was the length of the steel on the transition piece maintained?
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Where a Williamson tee was used as the tie-in method was the tee welded so it was 90 degrees to the main?
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Where a Williamson tee was used as the tie-in method was the new section of main purged to 100% G.I.A once the pilot drill had penetrated the main?
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Was the Williamson tee pressure tested before it was tapped?
Connections and Tie- Ins of 40mm, 50mm NB and 63mm Metric Polyethylene Mains MG SWP 5.10
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Was the correct electrofusion coupling used?
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Was a Service tee fused to the feed main and a SCADA gauge setup to monitor pressure in the feed main?
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Was pressure in the feed main monitored during the purge process to ensure pressure did not drop below 200Kpa?
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Was 100% G.I.A in the new section achieved?
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Was the purge end cap and the tie-in fittings soap tested once the new section of pipe was pressurized?
Steel pipe work corrosion Protection Protective wrapping of steel pipe MG SWP 3.7
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Has the correct method of pipe protection been chosen?
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Have steel pipes been wrapped following the five step Denso process?
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Has protective wrapping and/or paint been applied to bare metal surfaces?
Polyethylene Heat Shrink Sleeves SWP 6.16
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Was the pipe prepared correctly: <br>- Edges of existing coating tapered?<br>- Any sharp edges have been removed?<br>- Pipe pre heated?<br>- Plastic liner removed from the sleeve?<br>- Appropriate primer applied to the pipe if required?<br>- Sleeve/wrap around positioned correctly?<br>
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Has shrink sleeve been installed correctly?<br>Was heat applied form the center of the sleeve working towards the outside?<br>Is the sleeve free of burns?<br>Is the sleeve free of air-bubble?<br>Was there any cold spot left in the sleeve?
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On completion of installation of pipe protection/re-coating, has the newly coated section the main and fittings been spark tested?
Operation of Spark Tester SWP 10.5
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• Are batteries charged?<br>• Is spark tester within test dates?<br>• Has the spark tester been set correctly for the type of coating being tested?<br>• Was the earth lead connected to a bare part of the pipe?<br>• Was earth lead pressed into the ground near the pipe?<br>• When spark tested was turned on was a spark seen and heard?<br>• For pipe, was the spring installed and drawn over the coated pipe correctly?<br>• For fittings, was the brass brush installed and drawn over the coated fitting correctly?<br>• Were any faults detected and repaired?
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Other comment
Sign off
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Auditor(s)
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Auditee (Crew Leader)
