Period-over-Period Comparison Report
Monthly Schedule Change Analysis: Jan 2026 vs Feb 2026 Update — Jubail Industrial Port Expansion
Total Changes
147
this period
Activities Moved
80
>2 weeks slip
Added Activities
8
new this period
Deleted Activities
2
removed this period
Net Schedule Impact
+45d
vs Jan 2026 update
NET SCHEDULE SLIP THIS PERIOD — Contractor monthly update introduced 45-calendar-day slip on project completion. Client dispute threshold (contract clause 18.4) is 21 days per month. Owner notification required within 48 hours.
+45d
Date Movements (>5d)
80
avg shift: +18.2 days
Duration Changes
34
28 increased, 6 decreased
Float Changes (>10d)
41
36 reduced, 5 improved
Relationship Changes
18
12 added, 6 deleted
Added Activities
8
3 on critical path
Deleted Activities
2
scoped into other acts
Added Activities (8 New This Period)
| Activity ID | Activity Name | WBS |
OD (d) | Planned Start | Planned Finish |
TF (d) | Notes |
| PRT.088 | Quay Wall Dewatering System | 1.3 Marine |
28 | 10 Mar 2026 | 07 Apr 2026 |
0 |
Critical Path |
| PRT.089 | Quay Wall Dewatering Commission | 1.3 Marine |
14 | 08 Apr 2026 | 21 Apr 2026 |
0 |
Critical Path |
| CIV.302 | Additional Piling — Berth 4 Extension | 1.1 Civil |
35 | 15 Mar 2026 | 19 Apr 2026 |
8 |
Scope addition |
| HSE.010 | Environmental Protection Barriers | 1.6 HSE |
10 | 01 Mar 2026 | 11 Mar 2026 |
45 |
Regulatory requirement |
Deleted Activities (2 Removed This Period)
| Activity ID | Activity Name | Previous Status |
Previous TF | Reason for Deletion |
| ELE.195 | Temporary Generator Connection |
Complete |
— |
Scope absorbed into ELE.190 |
| CIV.188 | Temporary Access Road — North |
In Progress |
12 |
WARNING: Active activity deleted — verify scope transfer |
Date Movements > 5 Days (Worst 15 of 80)
| Act ID | Activity Name |
Prev BF | Curr Fcst Finish |
Δ Days |
TF Now |
Driver |
| PRT.065 | Quay Crane Rail Installation |
15 Jun 2026 | 14 Sep 2026 |
+91 | 0 |
Dewatering scope added |
| MAR.080 | Fender & Bollard Installation |
20 Jul 2026 | 18 Oct 2026 |
+89 | 0 |
Logic dependency on PRT.065 |
| COM.015 | Crane Load Testing & Commissioning |
01 Aug 2026 | 01 Nov 2026 |
+91 | 0 |
Cascades from MAR.080 |
| ELE.150 | Shore Power Connection — Berth 4 |
10 Aug 2026 | 05 Nov 2026 |
+86 | 2 |
MEC.010 predecessor slip |
| STR.120 | Container Yard Pavement — Zone 3 |
15 Sep 2026 | 10 Dec 2026 |
+85 | 5 |
Access blocked by PRT.088 |
| CIV.245 | Reefer Point Trenching — Zone 2 |
20 Jun 2026 | 05 Sep 2026 |
+76 | 8 |
Procurement delay: conduit |
| MEC.095 | Hydraulic Ramp Mechanism |
10 Jul 2026 | 10 Sep 2026 |
+61 | 10 |
Long-lead equipment 14wk delay |
| MAR.045 | Mooring Dolphin Construction |
30 Apr 2026 | 30 Jun 2026 |
+61 | 18 |
Weather window delay |
| PAV.080 | Heavy Load Pavement Km 2–4 |
05 Aug 2026 | 25 Sep 2026 |
+51 | 20 |
Contractor resource redeployment |
| ELE.165 | Yard Lighting Columns — Zone 3 |
15 Sep 2026 | 25 Oct 2026 |
+40 | 22 |
Depends on PAV.080 |
| CIV.100 | Gate Complex Foundation |
01 Apr 2026 | 12 Mar 2026 |
−20 | 32 |
Early resource mobilisation |
| ARC.060 | Admin Building Structural Frame |
20 May 2026 | 04 May 2026 |
−16 | 28 |
Concurrent crew deployment |
Float Changes > 10 Days (Top 8)
| Act ID | Activity Name |
Prev TF |
Curr TF |
Δ TF |
Status |
| PRT.065 | Quay Crane Rail Installation | 22 | 0 | −22 | Now Critical |
| MAR.080 | Fender & Bollard Installation | 18 | 0 | −18 | Now Critical |
| CIV.245 | Reefer Point Trenching | 20 | 8 | −12 | Near Critical |
| MEC.095 | Hydraulic Ramp Mechanism | 22 | 10 | −12 | Near Critical |
| CIV.100 | Gate Complex Foundation | 12 | 32 | +20 | Improved |
| ARC.060 | Admin Building Structural Frame | 15 | 28 | +13 | Improved |
Client Dispute Trigger
The Feb 2026 update introduces a 45-day slip on project completion, exceeding the contract Clause 18.4 threshold of 21 days/month. The primary driver is the addition of PRT.088/089 (Dewatering System — 42 days) with no prior change order notification. This likely constitutes a variation under the contract. Client has 10 days to respond to the contractor's recovery plan request.
Required Actions
Owner's Representative actions required:
- Issue Formal Schedule Non-Conformance Notice within 48 hours
- Request contractor's Schedule Recovery Plan (SRP) within 14 days
- Investigate CIV.188 deletion — active activity removed without notice
- Evaluate EOT entitlement for PRT.088/089 scope addition