The document titled “Joint Code of Practice on the Prevention and Management of Escape of Water on Construction Sites and Buildings Undergoing Renovation” First Edition August 2024 provides comprehensive guidelines to mitigate the risks associated with water damage on construction sites.
Here are the critical points:
Objective and Scope
OBJECTIVE: Reduce losses from escape of water (EoW) events and project delays during pre-construction and construction phases.
SCOPE: Applies to permanent and temporary water systems in buildings with a contract value of £2.5 million or above, but smaller projects can also benefit.
Mandatory Requirements in the Joint Code of Practice
The Joint Code of Practice outlines several mandatory requirements using the terms “must” and “shall.” Here are the key mandatory procedures and when they should be implemented, particularly considering the cost of the project:
Water Systems Management Plan (WSMP)
MUST be developed and incorporated into the Principal Contractor’s management systems at the outset of the project.
MUST encompass all aspects of the project, including design, construction, testing, and commissioning of water systems.
IMPLEMENTATION: For all construction projects with a contract value of £2.5 million or above, but smaller value contracts will benefit from proportionate application.
Engagement and Planning
MUST engage all stakeholders, including clients, designers, contractors, and insurers, at the earliest possible opportunity during the design phase.
IMPLEMENTATION: During the concept and design phases, regardless of project size.
Quality Assurance and Control
MUST implement a formal Quality Assurance Plan, including regular inspections, audits, and verification of materials and installation standards.
IMPLEMENTATION: Throughout the project, from pre-construction to completion, especially for projects with significant water system installations.
Active Automatic Flow Monitoring Shutoff (AAFMS) Devices
MUST be installed on both temporary and permanent water systems to detect and isolate abnormal water flows.
MUST be included in the design and contractor tender process.
IMPLEMENTATION: For projects with substantial water systems, particularly mid- and high-rise buildings, and those with a contract value of £2.5 million or above.
Emergency Response Planning
MUST develop a Water Emergency Response Plan (WERP) and designate a Water Emergency Response Team (WERT).
MUST include clear emergency response procedures for both working and non-working hours.
IMPLEMENTATION: From the start of the construction phase, applicable to all projects.
Sequencing Mitigation Measures
MUST incorporate mitigation measures at the earliest stages of construction, such as installing isolation and shutoff valves and ensuring functional drainage systems.
IMPLEMENTATION: Early in the construction phase, particularly for projects with complex water systems.
Management of Temporary Water Supplies
MUST minimise the use of temporary water supplies and ensure they are installed and tested by qualified plumbers.
MUST be equipped with AAFMS devices and isolated outside working hours.
IMPLEMENTATION: During the construction phase, especially for projects with extensive temporary water needs.
Testing and Commissioning
MUST follow industry standards and manufacturer guidelines for testing and commissioning water systems.
MUST develop a detailed Pressure Test Plan and implement a Wet Work Permit system.
IMPLEMENTATION: Throughout the testing and commissioning phases, applicable to all projects.
Specific Requirements for Mid- and High-Rise Buildings
MUST regularly update and test the WSMP and WERP.
MUST avoid combined service risers and single pipework for domestic and sprinkler systems.
MUST install AAFMS devices on all water systems.
IMPLEMENTATION: For mid- and high-rise buildings (5 storeys or greater, or 11+ meters in height), and projects with significant water system installations.
These mandatory requirements are designed to ensure effective water management and minimise the risk of water damage on construction sites. Compliance with these procedures is essential for the successful implementation of the Joint Code of Practice, particularly for projects with higher contract values and complex water systems.
