Boiler House Replacement — Delivery & Governance
| Document Title | B99 Malthouse Block Boiler House — Project Delivery Plan |
| Document Reference | KW-2026-4471 / PDP / Rev 1 |
| Project Reference | KW-2026-4471 |
| Site | Kettlewick College, Somerset, BA22 9KW |
| Issue Date | 27 April 2026 |
| Status | Issued for Tender |
| Issued by | Built AI Ltd |
| Issued to | Grimshaw & Bolt Ltd |
| Author / Custodian | Built AI PM |
This Project Delivery Plan defines how Built AI Ltd will execute the works at B99 Malthouse Block boiler house under the JCT Intermediate 2016 sub-contract with Grimshaw & Bolt Ltd as Principal Contractor. It sets out the project organisation, programme strategy, quality regime, H&S framework, communications protocol, risk management, logistics, commissioning approach and handover procedure for the 14-week site programme commencing within the Kettlewick College summer-term stand-down window of July–September 2026.
| Rev | Date | Change | By |
|---|---|---|---|
| Rev 1 | 27 Apr 2026 | Initial issue — issued at tender. Aligned with Tender Letter Proposal Rev 1, Priced BoQ Rev 1 and Programme Rev 1. | Built AI |
| Recipient | Organisation | Role | Format |
|---|---|---|---|
| The Commercial Manager | Grimshaw & Bolt Ltd | Principal Contractor | |
| The Project Manager | Grimshaw & Bolt Ltd | PC PM | |
| The H&S Manager | Grimshaw & Bolt Ltd | CDM PC | |
| Director, Built AI | Built AI Ltd | Senior Responsible Owner | Native |
| Project Manager, Built AI | Built AI Ltd | Custodian | Native |
| SDS Ltd | Services Design Solution Ltd | MEP Designer | PDF (info) |
This Project Delivery Plan is issued in commercial confidence to the recipients listed above. It contains commercially sensitive information and may not be reproduced or disclosed to third parties without the written consent of Built AI Ltd.
Single-page summary covering the headline financial position, programme, top risks, and major milestones.
H = High · M = Medium · All risks have mitigations in §11.3
Kettlewick College at Kettlewick is a Grade II* listed, operationally-live officer-training establishment of the Royal Navy. The Malthouse Block boiler house in Building B99 serves the principal accommodation block via primary LTHW circuit and DHW secondary. The existing plant — five Wessex boilers, two Hamworthy DHW generators and Nalco pressurisation equipment — is end-of-life and requires complete replacement.
| KPI | Target | Measurement |
|---|---|---|
| Health & Safety | Zero RIDDOR; ≥ 95 % daily PPE compliance | Site-supervisor weekly log |
| Programme | ≤ 5 % deviation from baseline weekly | Weekly Gantt update vs baseline |
| Quality | ≥ 95 % ITP hold-points cleared first-time | ITP register |
| Commercial | Final Account ≤ Contract Sum + agreed variations | Monthly valuation vs Contract Sum |
| Heat Continuity | Zero unscheduled DHW or heating outage | Kettlewick incident log |
| Snagging | ≤ 12 items at handover; resolved 2 wks | Joint snagging list |
| Commissioning | All 54 BMS points + OEM signed pre-PC | BMS records + OEM certificates |
| Aftercare | DLP response within SLAs (5 WD / NWD / 24 hr) | Defects log + helpdesk records |
Built AI delivery team with role photos and CDM duties. Three-tier hierarchy from Director through Project Manager and senior leads to operational supervisors.
| Role | Held By | Key Responsibilities |
|---|---|---|
| Senior Responsible Owner | Director, Built AI | Overall accountability; signs PDP; sign-off variations >£10k |
| Project Manager (PM) | TBC at appointment | Day-to-day mgmt; GB interface; programme; PDP custodian |
| Site Supervisor | TBC at appointment | Full-time on-site; supervision under GB CPP; daily H&S log |
| Commercial Manager | TBC at appointment | Valuations; variations; PS/PC Sum; Final Account |
| Technical / Design Lead | TBC at appointment | CDP design; RFIs; ITPs; SDS Ltd interface |
| Temporary Works Coordinator | TBC at appointment | BS 5975:2019 — heavy-plant lift, scaffold, skylight |
| Commissioning Manager | TBC at appointment | BSRIA BG 2/2010; OEM coord; witness commissioning |
| QA/QC Manager | TBC at appointment | ITPs; hold-points; NCRs; quality reporting |
Cross-Referenced to BoQ Rev 1. The full Bill of Quantities Rev 1 spans nine sections (A through I). This summary cross-references the work scope to the BoQ structure.
Built AI's scope is the complete MEP / public-health / controls-interface installation — strip-out, builders' work in connection, mechanical install, electrical install, BMS interface, testing and commissioning, handover documentation. The following are explicitly outside Built AI's scope and provided by others:
| Sec | Description | Tendered Sum (£) | Notes |
|---|---|---|---|
| A | Preliminaries (sub-contractor basis) | 51,525.60 | 14-week basis; PC duties with GB |
| B | Surveys and Investigations | 8,298.32 | Stage 4a confirmatory surveys |
| C | Strip-Out, Removal, Demolition | 26,376.53 | Asbestos by LARC |
| D | Builders' Work in Connection | 29,596.31 | Redecoration excluded |
| E | Testing and Commissioning | 27,601.09 | Factory tests / aftercare excluded |
| F | Mechanical and Public Health Services | 296,990.48 | Includes F6 BMS as PC Sum |
| G | Electrical Services | 24,066.00 | BS 7671 + NICEIC |
| H | Statutory Notifications | — | Per Doc 23 Table 17 — nil |
| I | Provisional Sums (Doc 23 Table 18) | 17,500.00 | Client-led drawdown only |
| FIXED TENDER TOTAL (ex VAT) | £481,954.33 | ||
Six independently-electable VE Options are presented in the dedicated VE Options tab of the Priced BoQ workbook. Maximum aggregate saving £56,736.86. See Tender Letter Proposal Section 8.5 for full detail.
11 phases from procurement through to seasonal commissioning. Each phase has dates, key activities and watch-out risks.
Concurrent working between phases is permitted under Built AI Site Supervisor coordination, subject to RAMS and GB Construction Manager approval:
| Item | Supplier | Lead | Order By | Phase Required |
|---|---|---|---|---|
| 3 × IDEAL EVO Max 2 — 150 kW boilers | SBS via IDEAL | 10 wks | 29 May 2026 | Phase 4 (Week 7) |
| 3 × Stokvis thermal stores 2,000 L | Stokvis Industrial | 8 wks | 5 Jun 2026 | Phase 4 (Week 7) |
| 2 × Stokvis Econoplate DHW PHEs | Stokvis Industrial | 8 wks | 5 Jun 2026 | Phase 4 (Week 7) |
| 1 × Stokvis Econoplate heating PHE | Stokvis Industrial | 6 wks | 19 Jun 2026 | Phase 5 (Week 8) |
| Twin-wall flue system | Selkirk / Schiedel | 6 wks | 19 Jun 2026 | Phase 5 (Week 9) |
| Gas Safety Panel (Merlin 1000) | SBS | 4 wks | 3 Jul 2026 | Phase 5 (Week 10) |
| Schneider Acti 9 DB + sub-main | Schneider via wholesaler | 3 wks | 10 Jul 2026 | Phase 6 (Week 9) |
| Grundfos pumps (MAGNA3, MAGNA1) | Grundfos via wholesaler | 2 wks | 17 Jul 2026 | Phase 5 |
Built AI operates an ISO 9001:2015-aligned quality management system, integrated with the project-specific ITP register, NCR procedure and inspection regime. Quality is treated as a phase-by-phase hold-point progression rather than an end-of-project audit.
Inspection & Test Plans are issued by phase. Each ITP covers preparation, witness points, test criteria, acceptance, and documentation:
| ITP # | Phase | Scope | Hold-Points |
|---|---|---|---|
| ITP-01 | Phase 1 | Stage 4a survey verification | 2 |
| ITP-02 | Phase 2 | Strip-out completion check | 3 |
| ITP-03 | Phase 3 | Concrete plinth strength & level | 4 |
| ITP-04 | Phase 3 | EI 120 fire-stopping verification | 2 |
| ITP-05 | Phase 4 | Heavy-plant lift-in pre-lift | 3 |
| ITP-06 | Phase 5 | Boiler cascade hydraulic test | 3 |
| ITP-07 | Phase 5 | Gas tightness IGEM/UP/1 | 2 |
| ITP-08 | Phase 5 | Insulation & identification | 2 |
| ITP-09 | Phase 6 | BS 7671 inspection & testing | 3 |
| ITP-10 | Phase 7 | BMS point-by-point commissioning | 4 |
| ITP-11 | Phase 8 | BSRIA BG 29 chemical clean | 3 |
| ITP-12 | Phase 9 | Witness commissioning | 5 |
NCRs raised within 24 hours of identification. Each NCR carries: NCR number, raised by, date, description, root cause, corrective action, verification, closure date. NCR register reviewed weekly with GB QA.
Built AI integrates under the GB Construction Phase Plan throughout the works. Specific integration points:
| Hazard | Control | RAMS Ref |
|---|---|---|
| Asbestos in works area | LARC-led licensed removal pre-mobilisation; Cert. of Reoccupation pre-Built AI strip | RAMS-01 |
| Live gas main isolation | Gas Safe registered isolations; pressure-proving system; AP authority | RAMS-02 |
| Heavy-plant lift-in via skylight | BS 5975:2019 TWC; 50 t mobile crane; wind limits; 15 m exclusion | RAMS-03 |
| Confined space (sump pit) | Confined space rescue plan; gas detection; permit-to-work | RAMS-04 |
| Live electrical (LV panel) | Approved isolations; PADL; portable PAT; LOTO | RAMS-05 |
| Heritage finishes | Floor protection; tool-control; conservation officer sign-off | RAMS-06 |
| Hot works (welding, brazing) | Hot work permit; fire-watch; extinguisher on station | RAMS-07 |
Built AI operates an ISO 14001:2015-aligned environmental management system. All operatives receive environmental induction; site-specific environmental controls integrated under GB Construction Phase Plan.
Grade II* listed estate. Specific controls:
Meeting cadences, routing, and information flow. Built AI operates under a single chain of communication via Grimshaw & Bolt as Principal Contractor.
Mockup of weekly status pack — single source of truth for project governance. Updated every Friday by Built AI PM.
Built AI operates a project-level Risk Register covering pre-construction, construction and post-PC phases. Risks are logged at LOI, scored on probability × impact (1–5 each, max score 25), owned by a named accountable party, and reviewed weekly during construction. Risk categories: Programme, Cost, Quality, Health & Safety, Commercial, Interface.
Probability (1 = Very Low <10 % to 5 = Very High >75 %); Impact (1 = Very Low to 5 = Very High >£50k or >10 days). Risk Score = P × I. Tiers: Low (1–4 green), Medium (5–9 amber), High (10–25 red).
5 × 5 likelihood × impact — top risks plotted with mitigation status.
| ID | Risk | Cat. | Score | Owner |
|---|---|---|---|---|
| R01 | LARC asbestos clearance slips beyond 17 Jul 2026 | Programme | 10 | GB PM |
| R02 | IDEAL cascade order placed after 31 May 2026 | Cost | 6 | Built AI Procurement |
| R03 | GB temp boiler not operational by Mon 6 Jul 2026 | Programme | 10 | GB PM |
| R04 | Concrete plinth fails 7-day strength check | Programme | 8 | Built AI BWIC |
| R05 | Heavy-plant lift-in blocked by weather (Week 7) | Programme | 9 | Crane contractor |
| R06 | Stage 4a survey reveals undersized incoming gas / LV | Cost | 8 | Built AI Tech Lead |
| R07 | BMS specialist appointed late by GB — Phase 7 slip | Programme | 12 | GB PM |
| R08 | Suspect ACM uncovered during Phase 5 strip | H&S/Prog | 10 | Built AI Site Sup. |
| R09 | OEM commissioning agent unavailable for booked window | Programme | 6 | Built AI Comm Mgr |
| R10 | Witness commissioning fails — re-test required | Programme | 6 | Built AI Comm Mgr |
| R11 | Kettlewick blackout dates conflict with construction window | Programme | 9 | GB PM |
| R12 | Materials price escalation beyond tender validity | Cost | 6 | Built AI Commercial |
B99 Malthouse Block boiler house — schematic plan-view (not to scale).
Single concentrated 5-day operation in Week 7 (17–21 August 2026):
Single-day changeover from temporary to permanent heating (Phase 9). Four-party sign-off required.
Commissioning is integrated with Programme Rev 1 Phase 8 (Weeks 11–13) and Phase 9 (Weeks 13–14). Objective: deliver a fully verified, documented, signed-off installation across mechanical, electrical, gas, public-health and BMS scopes — ready for Practical Completion on Friday 9 October 2026.
Formal Witness Commissioning Session offered to the Employer with 10 Working Days notice, scheduled Mon 5 to Tue 6 Oct 2026:
Practical Completion Friday 9 October 2026. PC certificate issued by GB on confirmation of: all ITPs cleared; BMS commissioning signed off; OEM certificates received; O&M handed over; training delivered; Defects Liability Period commences.
The following appendices are issued as separate documents or referenced from earlier sections:
ACM Asbestos-containing material · AP Authorised Person · BMS Building Management System · BSRIA Building Services Research and Information Association · BWIC Builders' Work in Connection · CAR Control of Asbestos Regulations · CDM Construction (Design and Management) Regulations · CDP Contractor's Design Portion · CIBSE Chartered Institution of Building Services Engineers · CPP Construction Phase Plan · DHW Domestic Hot Water · DLP Defects Liability Period · FA Fire Alarm · GB Grimshaw & Bolt Ltd · HP Hold-Point · IGEM Institution of Gas Engineers and Managers · ITP Inspection & Test Plan · JCT Joint Contracts Tribunal · JSP Joint Service Publication · LARC Licensed Asbestos Removal Contractor · LOI Letter of Intent · LTHW Low-Temperature Hot Water · MEP Mechanical, Electrical, Public Health · NCR Non-Conformance Report · O&M Operation & Maintenance · OEM Original Equipment Manufacturer · PC Practical Completion / Principal Contractor · PHE Plate Heat Exchanger · PS Provisional Sum · PSCC Principal Contractor · RAMS Risk Assessment & Method Statement · RFI Request for Information · SDS Services Design Solution Ltd · SES SES Ltd · SLA Service Level Agreement · TS Thermal Store · TW(C) Temporary Works (Coordinator) · VE Value Engineering
This document was produced using Built AI's Bidroom in a Box™ workflow pack — an AI-augmented system for sub-contractors that transforms tender data, programmes and operational plans into polished, branded, audit-ready deliverables in a fraction of the time required by traditional methods.