PUB’s Stipulation of Standards & Requirements for Water Fittings for Use in Potable Water Service Installations provides comprehensive guidelines to ensure that water fittings used in potable water systems in Singapore meet stringent safety, health, and quality standards. These stipulations are designed to safeguard public health by preventing contamination and ensuring reliable water supply systems.
Key Aspects of PUB’s Stipulation of Standards & Requirements
1. Scope and Application
- Scope: The guidelines cover all types of water fittings used in potable water service installations, including pipes, valves, taps, meters, and other related components.
- Application: Applicable to residential, commercial, and industrial potable water systems.
Material and Product Standards
2. Approved Materials
- Non-Toxic Materials: Only materials that do not leach harmful substances into the water are approved for use.
- Corrosion-Resistant Materials: Materials must resist corrosion to ensure durability and prevent contamination.
- Compliance with Standards: All materials must comply with relevant international and local standards (e.g., BS, EN, ISO).
3. Product Certification
- Certified Products: Water fittings must be certified by recognized bodies to ensure they meet required standards.
- Compliance Mark: Fittings should bear a compliance mark indicating they have been tested and certified.
Design and Performance Requirements
4. Design Criteria
- Pressure Ratings: Fittings must be designed to withstand the pressure ranges typical in potable water systems.
- Flow Rates: Ensure fittings provide adequate flow rates without compromising water quality.
5. Performance Testing
- Leakage Tests: Perform leakage tests to ensure fittings are watertight under specified conditions.
- Durability Tests: Test for durability to ensure long-term performance under normal operating conditions.
Installation Guidelines
6. Installation Standards
- Professional Installation: Installation should be carried out by qualified professionals to ensure compliance with standards.
- Proper Jointing Techniques: Use approved jointing methods to prevent leaks and ensure the integrity of the water system.
7. Backflow Prevention
- Backflow Devices: Install appropriate backflow prevention devices to protect the potable water supply from contamination.
- Regular Inspection: Inspect and maintain backflow prevention devices regularly.
Maintenance and Inspection
8. Routine Maintenance
- Scheduled Inspections: Conduct regular inspections to identify and rectify potential issues.
- Cleaning and Servicing: Regularly clean and service fittings to maintain water quality and system efficiency.
9. Record Keeping
- Maintenance Records: Maintain detailed records of all maintenance activities, including inspections, repairs, and replacements.
- Compliance Documentation: Keep documentation proving compliance with standards and regulations.
Compliance and Certification
10. Regulatory Compliance
- Local Regulations: Ensure all fittings and installations comply with PUB regulations and guidelines.
- Periodic Audits: Conduct periodic audits to verify compliance and identify areas for improvement.
11. Certification and Approval
- Product Certification: Ensure all products used in the installation are certified for potable water use.
- Installation Certification: Obtain certification for the installation from relevant authorities.
Example Compliance Checklist
| Activity | Frequency | Description |
|---|---|---|
| Material Verification | Initial | Verify that materials meet non-toxic and corrosion-resistant standards. |
| Product Certification Check | Ongoing | Ensure all products bear the appropriate certification marks. |
| Pressure and Flow Rate Testing | Initial | Test fittings to ensure they meet pressure and flow rate requirements. |
| Leakage Testing | Routine | Conduct leakage tests on installed fittings. |
| Backflow Prevention Device Inspection | Annually | Inspect backflow prevention devices to ensure they are functioning properly. |
| Maintenance Records Update | Ongoing | Maintain and update records of all maintenance activities. |
| Compliance Audit | Annually | Perform compliance audits to ensure adherence to PUB standards. |
Conclusion
PUB’s Stipulation of Standards & Requirements for Water Fittings for Use in Potable Water Service Installations ensures that all components used in potable water systems meet high safety and quality standards. Adhering to these guidelines helps protect public health by ensuring the reliability and safety of potable water supplies. For detailed procedures and specific requirements, refer to the full PUB stipulations and consult with professionals experienced in water service installations.
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