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 PVC, 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 bagtube<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>- Are the bags within expiry date<br>- Bladders pressure tested & 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 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 are 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 equalisation valve main side down?<br>- Have dimension H measurements been recorded 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 equalisation valve main side down?<br>- Aluminum Type the casting machine side up, facing up?<br>- Has measurement H been taken and recorded 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 as per SWP 7.13?<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 as per SWP 7.13?<br>- Has the bur been removed from the tapping using the chip sweep as per SWP7.13?
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Has the Sealing Element been prepared and selected using the sealing element table as per SWP 7.13?<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>- Have all component been replaced in working order – if not has a maintenance check been completed?
Polyethylene Mains Repair, Alteration or Tie-In SWP 7.14 General Mainlaying Information SWP 1.1 Process and direction for stopping-off, by-passing and commissioning polyethylene mains, up to 250mm
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Have by-pass requirement been provided by MGN Asset Management? – as per engineering standard EP-DD- 4164
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Has approval been obtained from MGN Asset Management for squeeze off? <br>- For planned work squeeze off is permitted on mains up to 63mm<br>- For 110mm-250mm approval from MGN engineering prior to squeeze off is required.
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Are controls in place to control static?
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Have SCADA gauges been fitted correctly to allow the mains pressure to be monitored?
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Has network planning approval been obtained for by-pass size?<br>Has the correct by-pass been established?
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Have tees been fitted to enable the by-pass and the main to be purged?
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Has the by-pass been commissioned?
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Has stop off of the Main been performed as per SWP 7.16?
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Mains repair / alterations <br>Has mains repair / alteration been completed correctly:<br>- Were wet rags used to control static?<br>- Was electrofusion completed as per SWP 5.8: <br> o Has pipe been Scrape and has line up clamp been used?<br> o Has pipe been marked at center of coupling on both ends of pipe? <br> o Has coupling been fused for required heat time and cooling time is met? <br> o Has Operator ID been noted on the joint?
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Recommission Main after Repair or Alteration<br>Has the main been recommission correctly after repair / alteration including:<br>- Has main been purged 100% G.I.A ?<br>- Have all tees been capped?<br>- Have all fittings been soap tested and any leaks rectified?<br>- Have all squeeze of device been released?<br>- Has the by-pass been decommissioned correctly?
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(Following repairs - was the service checked for leaks (soapy water), copper wire reconnected and service purged?
Encapress Encapsulation System SWP 6.12
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Were the following preparation tasks completed:<br>- Was the main excavate and expose prepared adequately?<br>- Was the leak reduced by caulking the lead joint or attempting to tighten bolts on a mechanical joint? <br>- Was the main and joint cleaned of excess dirt?<br>- Was the required area Grit blasted for encapsulation?<br>- Was a thin coat of primer used over the blasted area of main?
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Was the installation of the Encapress Mould installed correctly?<br>- Was the mould wrapped/ buckled correctly around the joint (free of dirt)?
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Was the sealant managed as per instruction including <br>- Was required PPE used?<br>- Was mains pressure was established?<br>- Was sealant mixed a in a well-ventilated area?<br>- Was sealant poured into the mould and the mould pressurized?<br>- For pressurizing mould with no vent, was the sealant poured pressuriesed as procedure? <br>- For pressurising mould with vent, was the sealant poured pressuriesed as procedure?
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Was the repair leak tested and visually inspected after sealant had cured to ensure no leaks prior to backfilling?
External Injection of Anaerobic Sealants SWP 6.13
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Was the MG SWP followed for the selection of the sealant?<br>- Yellow Permabond Gaseal 3 <br>- Blue Permabond Gaseal 1 <br>- Red Permabond Gaseal 2
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Was all preparation completed for Anaerobic Sealing including: <br>- Wire brush the area to be drilled?<br>- When drilling the lead was the lead face cleaned and clearance checked for drilling?<br>- If drilling the collar were the measurements marked and recorded?
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Was it insured that the hemp was not drilled through?
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Was the injection point tested to ensure there was not too much gas flow?
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If the gas flow was excessive after drilling was a pipe cleaner inserted in the tube to slow flow?
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Was the correct sealing method used effectively and completed as per SWP?<br>- Injection Through the Lead<br>- Injection Through Back Of Socket<br>- Pressure Pot
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When the fluid was injected was it at a rate of 1 pump per minute?
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Was the correct amount of fluid injected for the size of joint being repaired?
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For joints of 300mm was two injection points used?
Stainless Steel Permanent repair clamp SWP 6.14 Method used to fit Stainless Steel Clamps for tapping and repair of Gas mains
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Were the following activities completed ensuring the clamp was fitted effectively?<br><br>Was the excavation completed to a sufficient size to work safely and comfortably?<br>Was the correct size clamp selected with a length that will allow a minimum overlap of 60 mm on each side?<br>Was the main cleaned sufficiently removing enamel, rust or coating prior to clamp to be installed?<br>Was the clamp positioned over the area to be repaired and all nuts effectively tightened to the required Torque?<br>Were the nuts re-torqued after 30 minutes?<br>Was the repair soap tested?<br>When a tapping clamp was used was the service and tapping clamp pressure tested prior to tapping the main?
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 completely 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 manufacturer’s requirements?
Hydraulic Steel Pipe Squeeze off SWP 7.17 Method for the successful squeeze-off of steel pipes ranging from 15 mm through to 50mm
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Mains up to and including 50mm<br>Is this being used to bring and emergency escape under control?<br>If this is not to bring an emergency escape under control has this been approved by MG?<br>Have correct squeeze off location been selected?<br>Has coating been removed appropriately?<br>Has the seam been identified?<br>Have the jaws of the jacks been installed correctly i.e. over the seams, avoiding defects and joint welds (was a secondary squeeze-off necessary)?
Flaring off using purging equipment SWP1.10 When commissioning or decommissioning gas mains and services
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Were the following precautions / tasks completed to ensure for the protection of personnel, constructions and the public<br>- Warning signs in place?<br>- Purge stack 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 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 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
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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Has the pipe been prepared correctly: <br>- Edges of existing coating tapered?<br>- Any sharp edges have been removed?<br>- Pipe pre heated?<br>- Plastic liner remove from the sleeve?<br>- Appropriate primer applied to the pipe if required?<br>- Sleeve/wrap around positioned correctly?
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Has shrink sleeve been installed correctly:<br>- Heat applied form the center of the sleeve working towards the outside?<br>- Sleeve free of burns?<br>- Sleeve free of air-bubble?<br>- No cold spots 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?
Refix and Relight of Appliances SWP 4.6 Refix a domestic meter and relight appliance
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Disconnecting Meter <br>- Were all appliances and control valves turn-off?<br>- Was the meter, fittings and consumer piping been checked with a voltage tester?<br>- Were cross bonding strap / leads connected appropriately?<br>- Was the gas isolated - turned off at service control valve?<br>- Were personal danger tags to service valve used effectively? <br>- Was the meter disconnect as per procedure and consumer piping capped and seal?
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Prior to re-fix <br>- Were all appliances checked to determine if they were still ‘turned off’?<br>- Was consumer piping and service pipe retested with voltage tester?<br>- Was bonding straps still attached to service riser and consumer piping ?<br>- Was a check completed to determine no sources of ignition present (e.g. naked flames, electrical motors)?<br>- Was the meter reconnected to the upstand and purged?
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Adjust or Replace Service Regulator <br>- Was flow pressure checked and adjusted as required using the appropriate equipment?<br>- Was lockup pressure checked and the regulator replaced if required?
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Reconnect Meter to Consumer Piping<br>- With the gas supply isolated was the meter connected to customer pipe as per procedure <br>- Was a soap test of the meter, connections and associated fittings completed. <br>- Was a leak test completed by monitoring the meter test dial to ensure no movement for five minutes.
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Purging and Lighting of Appliances<br>- Were all appliances tested with a volt tester before re-lighting once supply was restored?<br>- Were customers notified that appliances have been lit and safe to use / or relight card left?
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>• 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)
