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SEL Fire Fighting Supply Pipelines.

Client :
  Solid Energy NZ - Stockton Mine.

Engineer :
  Gordon Harper.

Contract Manager :
  Scott Brookland.

Completed Value :
  $ 550,000.

Start Date :
  October 2010.

Practical Completion Date :
  December 2010.

Overview :
Construction of buried PE pipelines at three locations around the Stockton Mine site for water supply to fire fighting systems.

Specific Scope :
  - Supply, weld, excavate, bed, backfill and compact 412m of DN160 PE pipelines.
  - Supply, weld, excavate, bed, backfill and compact 29m of DN125 PE pipelines.
  - Supply, weld and install 260m of DN110 PE pipelines.
  - Supply, weld, excavate, bed, backfill and compact 145m of DN90 PE pipelines.
  - Supply, weld, excavate, bed, backfill and compact 139m of DN75 PE pipelines.
  - Supply, weld, excavate, bed, backfill and compact 29m of DN50 PE pipelines.
  - Supply and weld 171 electrofusion couplers (DN160-DN50).
  - Install 11 fire hydrant assemblies.
  - Foundation preparation and construction of concrete floor slab for two steel water supply reservoir tanks.
  - Supply, excavate, bed, backfill and compact 65m of 375Ø RCRRJ Class Z concrete pipe.
  - Supply, excavate, bed, backfill and compact 104m of 450Ø RCRRJ Class Z concrete pipe.
  - Supply, install and fit out precast concrete valve chamber.
  - Supply and installation of air valves and valving to pipelines as required.
  - Traffic management on mine main haul road.
  - Pressure testing of all pipelines.

SEL Fire Suppression Pipeline.

Client :
  Solid Energy NZ - Stockton Mine.

Engineer :
  Tony Cooper.

Contract Manager :
  Tony Munnerley.

Completed Value :
  $ 277,918.70.

Start Date :
  September 2009.

Practical Completion Date :
  March 2010.

Overview :
Construction of pumped water supply pipelines, from the Mangatini sump, for suppression of underground coal fires.

Specific Scope :
  - Butt weld and elctrofusion weld 1330m of DN450 PE pipeline.
  - Butt weld and elctrofusion weld 440m of DN400 PE pipeline.
  - Restraining and anchoring of pipelines along pipe route.
  - Supply and installation of air release valves.
  - Fitting floats to floating pipeline section out to pump.

SEL CHPP Flocculant, Slurry & Return Water Pipelines.

Client :
  Solid Energy NZ - Stockton Mine.

Engineer :
  Tony Cooper.

Contract Manager :
  Tony Munnerley.

Completed Value :
  $ 341,843.01.

Start Date :
  December 2009.

Practical Completion Date :
  June 2010.

Overview :
Construction of slurry, flocculant and return water pipelines for the new coal processing plant at Stockton Mine.

Specific Scope :
  - Butt weld and position 730m of DN200 PN25 PE pipe.
  - Butt weld and position 1110m of DN160 PN10 PE pipe.
  - Butt weld and position 650m of DN140 PN25 PE pipe.
  - Butt weld and position 1230m of DN125 PN16 PE pipe.
  - Butt weld and position 1605m of DN225 PN10 PE pipe.
  - Supply and install 122 electrofusion couplers (DN225 - DN125).
  - Pressure testing of all pipelines at test pressures of up to 2700kPa.

SEL Lime Dosing Pipelines.

Client :
  Solid Energy NZ - Stockton Mine.

Engineer :
  Tony Cooper.

Contract Manager :
  Tony Munnerley.

Completed Value :
  $ 184,136.98.

Start Date :
  December 2009.

Practical Completion Date :
  June 2010.

Overview :
Construction of DN140 PN12.5 pipelines to deliver lime slurry for dosing of mine run-off water at Stockton Mine.

Specific Scope :
  - Butt weld and position 5000m of DN140 PE pipe.
  - Supply and installation of 110 DN140 electrofusion couplers.
  - Supply and installation of 80 DN140 stub flanges and backing rings.
  - Supply and installation of 156 steel pin and chain pipeline restraints.
  - Pressure testing and commissioning of all pipelines.

SEL CHPP Water Supply Pipelines.

Client :
  Solid Energy NZ - Stockton Mine.

Engineer :
  Tony Cooper.

Contract Manager :
  Tony Munnerley.

Completed Value :
  $ 516,547.75.

Start Date :
  August 2009.

Practical Completion Date :
  May 2010.

Overview :
Construction of clean water supply pipelines for the new coal processing plant at Stockton Mine.

Specific Scope :
  - Supply, butt weld and position 1020m of DN315 PE pipe.
  - Supply, butt weld and position 1520m of DN250 PE pipe.
  - Supply, butt weld and position 1575m of DN280 PE pipe.
  - Supply and installation of associated air valves, butterfly valves and non return valves etc.
  - Supply and installation of 77 electrofusion couplers (DN315 - DN250).
  - Supply and installation of steel pin and chain pipeline restraints.
  - Pressure testing and commissioning of all pipelines.

SEL Duncans Sump to Water Treatment Plant Twin 400Ø Pipelines.

Client :
  Solid Energy NZ - Stockton Mine.

Engineer :
  Tony Cooper.

Contract Manager :
  Tony Munnerley.

Completed Value :
  $ 445,157.24.

Start Date :
  May 2007.

Practical Completion Date :
  November 2007.

Overview :
Construction of twin DN400 mine water transfer pipelines from Duncans Sump to the new water treatment plant.

Specific Scope :
  - Supply, butt weld, electrofusion weld and position 1539m of DN400 PE pipelines.
  - Restraining of pipelines with steel pins and chain.
  - Supply and installation of air release valves.
  - Supply and install decanting intake heads.
  - Pressure testing of completed pipelines.
  - Supply and install DN400 magflow flowmeter.

SEL Ford Creek No.4 to Water Treatment Plant Pipeline.

Client :
  Solid Energy NZ - Stockton Mine.

Engineer :
  Tony Cooper.

Contract Manager :
  Tony Munnerley.

Completed Value :
  $ 373,752.37.

Start Date :
  February 2007.

Practical Completion Date :
  July 2007.

Overview :
Construction of decant pipeline and valving through Ford Creek No.5 dam. Supply, weld and place 2050m of DN315 PE pieline from Ford Creek No.5 dam to the new water treatment plant.

Specific Scope :
  - Supply and installation of PE decanting intake head.
  - Supply, weld and install DN315 PE pipeline through earth dam.
  - Supply and install valving assembly on dam outlet.
  - Supply, butt weld and install 2050m of DN316 PE pipeline.
  - Electrofusion weld joining of butt welded pipe strings.
  - Construction of concrete thrust blocks.
  - Installation of steel restraining pins and chains.
  - Supply and installation of air release valves along the pipeline.
  - Pressure testing of all constructed pipelines.

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