Overview

ISO 10802:2020 - Ductile iron pipelines - Hydrostatic testing after installation defines site hydrostatic acceptance tests for installed ductile iron pipelines conveying water and other liquids (not for gas). The standard sets out the sequence, safety requirements and test methods to verify the integrity and tightness of pipes, joints, fittings and associated components after installation. All pressures are relative and expressed in bars (1 bar = 0.1 MPa).

Key topics and technical requirements

Scope and applicability
- Applies to pressure and non‑pressure ductile iron pipelines installed in accordance with established installation practice.
- Materials other than ductile iron are to be tested separately.
Testing sequence
- Three-phase approach: preparation of test sections, preliminary test (stabilization and air evacuation), and main pressure test (tightness assessment).
Accepted test methods
- Water loss tests: Falling pressure (WLFP) and constant pressure (WLCP).
- Pressure drop test - Direct reading (PDDR) as an alternative method.
- Procedures for filling, venting and partial backfilling prior to testing.
Pressure definitions and test pressures
- Defines key pressures (working, system test pressure STP, allowable site test pressure, design and surge-related pressures).
- Example: system test pressure (STP) = 1.5 × design pressure (when design pressure ≤ 10 bar) or = design pressure + 5 (when > 10 bar).
Safety and site controls
- Strict safety rules: tests are only for water-pressure testing (air testing is explicitly warned against).
- Requirements for anchoring, temporary fittings, excavation guarding, calibrated equipment, controlled sequences and venting to avoid hazards.
Acceptance criteria and reporting
- Criteria for acceptance of pressure and non‑pressure pipelines and guidance on test reporting (informative annex with example report).

Practical applications and users

ISO 10802:2020 is intended for use by:

Municipal water utilities, water main contractors and pipeline installers
Project engineers and designers specifying commissioning and acceptance tests
Site supervisors, testing teams and independent inspectors responsible for quality assurance
Asset owners verifying new pipeline installations, rehabilitation or replacement works

Typical applications:

Commissioning new ductile iron water mains and distribution pipelines
Verifying joint integrity after installation or repair
Acceptance testing following trench backfilling and anchor block installation

Related standards

ISO 2531 - Ductile iron pipes, fittings, accessories and their joints for water applications
ISO 21051 - Construction and installation of ductile iron pipeline systems
ISO 6708, ISO 7186, ISO 7268, ISO 10804, ISO 16631 (referenced for components, pressures and joints)

Keywords: ISO 10802:2020, hydrostatic testing, ductile iron pipelines, water loss test, pressure drop test, site hydrostatic acceptance tests, pipeline commissioning, system test pressure.

Overview

Key topics and technical requirements

Scope and applicability
- Applies to pressure and non‑pressure ductile iron pipelines installed in accordance with established installation practice.
- Materials other than ductile iron are to be tested separately.
Testing sequence
- Three-phase approach: preparation of test sections, preliminary test (stabilization and air evacuation), and main pressure test (tightness assessment).
Accepted test methods
- Water loss tests: Falling pressure (WLFP) and constant pressure (WLCP).
- Pressure drop test - Direct reading (PDDR) as an alternative method.
- Procedures for filling, venting and partial backfilling prior to testing.
Pressure definitions and test pressures
- Defines key pressures (working, system test pressure STP, allowable site test pressure, design and surge-related pressures).
- Example: system test pressure (STP) = 1.5 × design pressure (when design pressure ≤ 10 bar) or = design pressure + 5 (when > 10 bar).
Safety and site controls
- Strict safety rules: tests are only for water-pressure testing (air testing is explicitly warned against).
- Requirements for anchoring, temporary fittings, excavation guarding, calibrated equipment, controlled sequences and venting to avoid hazards.
Acceptance criteria and reporting
- Criteria for acceptance of pressure and non‑pressure pipelines and guidance on test reporting (informative annex with example report).

Practical applications and users

ISO 10802:2020 is intended for use by:

Municipal water utilities, water main contractors and pipeline installers
Project engineers and designers specifying commissioning and acceptance tests
Site supervisors, testing teams and independent inspectors responsible for quality assurance
Asset owners verifying new pipeline installations, rehabilitation or replacement works

Typical applications:

Commissioning new ductile iron water mains and distribution pipelines
Verifying joint integrity after installation or repair
Acceptance testing following trench backfilling and anchor block installation

Related standards

ISO 2531 - Ductile iron pipes, fittings, accessories and their joints for water applications
ISO 21051 - Construction and installation of ductile iron pipeline systems
ISO 6708, ISO 7186, ISO 7268, ISO 10804, ISO 16631 (referenced for components, pressures and joints)

Keywords: ISO 10802:2020, hydrostatic testing, ductile iron pipelines, water loss test, pressure drop test, site hydrostatic acceptance tests, pipeline commissioning, system test pressure.

ISO 10802:2020 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Related standards

Abstract

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Related standards

Ductile iron pipes, fittings, accessories and their joints for water applications.

Construction and installation of ductile iron pipeline system

Pipework components - Definition and selection of DN (nominal size) (ISO 6708:1995)

Ductile iron products for sewage applications

Pipe components - Definition of nominal pressure - Amendment 1

Restrained joint systems for ductile iron pipelines — Design rules and type testing

Rigid cellular plastics — Determination of water vapour transmission properties