CON-514 — Stack Extension Progress Tracker

Commencement

19 May 2026

Practical Completion

13 Jul 2026

Rev 2.1 · contract 30 Jun

Progress As-At

6 Jul 2026

Overall Progress

—

Schedule Status

Re-baselined +13d

Acceleration & Schedule Redundancy vs Construction Methodology Rev 3.2 (21 May 2026)

This tracker is baselined on the Weekly Progress Update contract milestones (commencement 19 May, Practical Completion 30 June). SRG's Construction Methodology Rev 3.2 demonstrates how early mobilisation and re-sequencing build float and redundancy against those contract dates:

18 May

Mobilised early — methodology mobilises 18 May, ahead of the 19 May contract commencement, recovering a day before works begin.

T1 → T2

Sequenced stick build — T1 then T2 (not concurrent), ground team rolling between trains on a Mon–Fri pattern with weekend acceleration held in reserve.

+13d

Completion re-baselined — Company free-issue steel slipped (M4 8 Jul, M5 10 Jul), consuming float and moving works completion to 13 July (Rev 2.1); the delay/EOT is captured under EOT-002 (cl. 41.3). Train 1 is unaffected and tracking to baseline.

13 / 1

Fatigue-managed RA roster — rope access on a 13/1 roster, RDO aligned to each train's welding shift, sustaining the shutdown campaign without stand-down risk.

Where the methodology runs ahead of the contract baseline, the gap is deliberate redundancy. The contract milestones remain the reference baseline (PC 30 June); the working completion is re-baselined to 13 July (Rev 2.1) on the confirmed Company steel dates, with the delay captured under EOT-002. Current risks (Train 1 module rework, T2 steel-gated back end) are tracked against them.

Milestone Register 0 items

	ID	Activity	Date	Week	Notes

Weather Record & Lifting Outlook Kwinana · recorded actuals + 7-day outlook · gusts vs indicative lift-limit guides (man-cage ~7 m/s · crane ~10 m/s)

Wind bands are indicative planning guides only. Safe working wind limits for any lift are confirmed by the approved lift studies and the crane operator on the day.

Legend

Done

Active (in progress)

On Track (not started)

At Risk

Delayed

Planned

Milestone (baseline)

Forecast PC (progress-based)

Bar fill = % complete

Today

Overrun (green = planned · yellow = +1 day · red = over target)

Activity	WBS	Status
Activity	WBS	Status

Key Assumptions Methodology Rev 3.2 §2.2

Free-issue materials arrive on-site during the week of 18 May 2026, with SRG mobilising in alignment with confirmed delivery
Concrete pile cap and foundation works complete, surveyed and signed off by Covalent prior to SRG mobilisation
Site access, inductions and Covalent entry requirements facilitated promptly to avoid programme delay
Covalent QA representative available for witness/sign-off at critical ITP hold points (tie-in flange, grouting, bolt torque, verticality)
Pre-assembled Modules 4 & 5 (offsite PAS) transported to site within the nominated crane radius per programme
Carnac Engineering flange design issued to SRG prior to commencement of tie-in access works
CASA aviation lighting at 97m noted non-mandatory per Addendum 3 — SRG coordinates if it becomes a requirement
Permit-to-Work, isolation and SIMOPS interfaces managed per Covalent procedures; SIMOPS facilitation timely

Constraints & Programme Risks Methodology Rev 3.2 §2.3

Programme runs Mon 18 May – Fri 3 Jul 2026 — 47 calendar days end-to-end, ~36 working days of execution
Stick build is sequenced T1 then T2 (not concurrent), Mon–Fri across 25 May – 11 Jun; weekend acceleration held in reserve
Shutdown rope-access works run sequentially T1 then T2 from 1 Jun – 2 Jul on a single rope-access crew
Any delay to free-issue material delivery has a direct programme impact and may trigger a formal variation notice
Rope access operations weather-dependent — wind above the safe working threshold (IRATA ICOP / SWMS) requires stand-down at height
Existing stack removal assumes top-rig from fabricator-supplied lifting lugs — SRG to confirm with Carnac Engineering prior
Assembly pad position is final per LPA lift studies (CCA-15-03/04, CCA-15-05/06); repositioning triggers a survey check and SIMOPS review
Crane & rigging contracted directly by Covalent to Crane Corp Australia; ground bearing & crane setup managed under their contract

Key Personnel

Role	Name	Status
General Manager — SW	Mark Cowle	SRG Perm
Operations Manager	Joshua Toth	SRG Perm
HSET Superintendent	Haydyn Nissen	SRG Perm
Project Superintendent	Adam Riley	SRG Perm
Rope Access Supervisor (IRATA L3)	Jordan Kirkby	SRG Perm
Rope Access Technical Authority	Nathan Roberts-Tindall	SRG Perm
Fabrication Supervisor	Paul Berry	SRG Perm
HSE Advisor	Jacinta Jeffery	SRG Perm
QA/QC Engineer	Muhammad Ali	SRG Perm
Surveyor	BE Surveys	Subcontractor

Deliverable	Owner	Status	Document
Construction Methodology (Schedule B)Rev 3.2 · 21 May · sequence, hold points, lift-study integration	SRG	Complete	View Rev 3.2 ⭳
Project WHS Management Plan (COV-MMP-0001)Rev 1.00 · signed 21 May	SRG HSE	Complete	View signed ⭳
SWMS — high-risk construction workWorking at Heights, EWP, MHE, Rope Access, Cranes & Lifting	SRG HSE	Complete	5 SWMS — see Safety Docs ↓
Inspection & Test Plans (ITPs)Train 1 compiled ITPs in the submitted MDR — module assembly/installation, stack removal, flange, painting	SRG QA/QC	In MDR	Train 1 MDR — see QA/QC Docs ↓
Lift Studies (LPA / Crane Corp)Cranecorp T1 Module 1 held; CCA-15-03/04 & 05/06 issued by LPA	Covalent / LPA	Complete	View T1 M1 ⭳
Survey methodology + calibrationPre-erection, assembly-pad, progressive, pre-lift gate, as-built	BE Surveys	Complete	View Rev 2 ⭳
Traffic Movement Plan (TMP)COV-TMP-0001 Rev 1.00 · crane radius, laydown access, pedestrian exclusion	SRG HSE	Complete	View Rev 1.00 ⭳
Critical Risk Assessment / TBRATask-based risk assessment — SRG Global & Crane Corp, Stack Extension	SRG + Crane Corp	Complete	Download TBRA ⭳
IRATA certification recordsAll L2/L3 technicians + Rope Access Technical Authority sign-off	SRG RA	Submitted	Held by Covalent
RapidCrews training-needs analysis100% competency compliance prior to mobilisation	SRG	Submitted	Held by Covalent