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Section 4— Testing and Defects

Clause 40.3

Tests — Plant

Purpose

The Supervisor tests Plant and Equipment to confirm they meet the Works Information. Tests include performance and operational testing.

Practical Application

Plant tests verify that installed equipment functions correctly. The Contractor provides operating instructions and trained personnel for testing.

Common Pitfalls

Performance testing may require specific conditions (load, temperature, duration). Ensure the Works Information or test specification defines the acceptance criteria clearly.

Related Clauses

Clause 40.1Clause 40.4

📖 This summary is for reference. For the full, authoritative NEC4 contract text — including all amendments, guidance notes, and flow charts — visit the official NEC website.

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⚠️ This commentary is for reference only. Always refer to the full NEC4 contract text and seek professional legal or contractual advice for your specific project.