Equipotential Bonding System — Tender Clarification is a project-procurement page for government buyers, consultants, EPC contractors, tender teams, QA/QC engineers and project managers.
Tender Objective
The tender should define a measurable and coordinated scope covering design, supply, installation, earthing, bonding, surge protection, testing, documentation and handover. Generic product names without drawings, quantities and acceptance criteria can create commercial disputes.
Technical Inputs
Drawings, structure dimensions, risk assessment, electrical SLD, soil information, equipment schedule and applicable standard.
Commercial Inputs
Quantities, unit rates, taxes, logistics, installation, testing, warranty, exclusions and completion schedule.
Quality Inputs
Datasheets, compliance statement, ITP, method statement, inspection hold points and traceable test records.
Handover Inputs
As-built drawings, photographs, test reports, warranty, training and O&M manual.
Typical BOQ Structure
| BOQ Group | Typical Scope | Measurement Basis |
|---|---|---|
| Design | Survey, calculations, risk review and drawings | Lot, building or structure |
| Air Termination | Air terminals, masts, mesh conductors, supports and accessories | Number, metre or set |
| Down Conductors | Conductors, clamps, guards, test joints and transition connectors | Metre or number |
| Earthing and Bonding | Electrodes, ring/grid, pits, backfill, earth bars and bonds | Number, metre or set |
| Surge Protection | Power, data, telecom and control SPDs | Number or set |
| Testing | Visual, continuity, earth tests and SPD verification | Lot or test point |
| Documentation | Datasheets, reports, as-built drawings, warranty and O&M | Lot |
Technical Bid Checklist
- Applicable standard and design basis identified.
- Drawing and BOQ references match.
- Materials and dimensions are measurable.
- Dissimilar-metal connections are addressed.
- SPD schedule includes panel and circuit references.
- Testing methods and acceptance records are defined.
- Warranty and maintenance scope are clear.
Commercial Bid Checklist
- Supply, installation and testing separated where required.
- Taxes, freight, unloading and storage clarified.
- Civil work, scaffolding, waterproofing and shutdowns clarified.
- Provisional quantities and variation rules defined.
- Payment milestones and completion schedule defined.
Target Keywords
Common Tender Risks
Major risks include incomplete drawings, generic quantities, unsupported approval claims, unclear civil scope, mismatched metals, missing SPD coordination, untraceable testing and incomplete handover requirements.
Frequently Asked Questions
Can the BOQ be finalised without approved drawings?
Only a provisional BOQ can be prepared. Final quantities should follow approved plans, elevations and actual routes.
Should testing be a separate BOQ item?
It may be included in installation or listed separately, but the scope and required records must be clear.
Can an approval be claimed without documentary evidence?
No. Compliance and approval claims should be supported by current, relevant documents.
Related Tender Pages
Tender and BOQ Support
Share tender documents, drawings, BOQ and submission date for a project-specific review.