SS 645: 2019 – Code of Practice for Installation and Servicing of Electrical Fire Alarm Systems is the Singapore Standard that sets out the requirements for the design, installation, commissioning, maintenance, and servicing of electrical fire alarm systems in buildings. This standard aims to ensure that fire alarm systems are reliable, effective, and provide early warning in the event of a fire.
Key Aspects of SS 645: 2019
1. Scope and Application
- Scope: This standard covers the requirements for the installation, commissioning, maintenance, and servicing of electrical fire alarm systems.
- Application: Applicable to all types of buildings, including residential, commercial, and industrial premises.
Design and Installation
2. System Design
- Risk Assessment: Conduct a thorough risk assessment to determine the specific fire alarm system requirements.
- System Components: Select appropriate system components, including detectors, control panels, alarm devices, and power supplies.
- Coverage: Ensure adequate coverage of all areas within the building to provide early fire detection and warning.
3. Installation Requirements
- Standards Compliance: Ensure all installation work complies with relevant standards and manufacturer’s guidelines.
- Detector Placement: Position detectors to maximize their effectiveness, considering factors like airflow, ceiling height, and potential obstructions.
- Cabling and Wiring: Use appropriate cabling and wiring methods to ensure system reliability and minimize the risk of interference or damage.
- Power Supplies: Install reliable primary and backup power supplies to ensure the system remains operational during power outages.
Commissioning
4. System Testing
- Initial Testing: Perform comprehensive testing of all system components to verify correct installation and operation.
- Functional Tests: Conduct functional tests to ensure detectors, alarm devices, and control panels operate as intended.
- Documentation: Maintain detailed records of all tests, including test results and any issues identified and resolved.
5. Handover Procedures
- User Training: Provide training for building occupants or designated personnel on the operation and maintenance of the fire alarm system.
- System Documentation: Supply comprehensive documentation, including system drawings, component specifications, and maintenance schedules.
Maintenance and Servicing
6. Regular Maintenance
- Routine Inspections: Conduct routine inspections and testing of the fire alarm system at specified intervals to ensure continued reliability.
- Component Replacement: Replace any faulty or aged components to maintain system performance.
7. Servicing Requirements
- Qualified Personnel: Ensure servicing is carried out by qualified personnel with appropriate training and experience.
- Service Records: Keep detailed records of all servicing activities, including dates, actions taken, and any issues identified.
Compliance and Certification
8. Compliance
- Regulatory Compliance: Ensure the fire alarm system and all related activities comply with local regulations and standards.
- Best Practices: Follow industry best practices for the installation, commissioning, maintenance, and servicing of fire alarm systems.
9. Certification
- Certified Systems: Ensure the fire alarm system components are certified to meet relevant standards.
- Professional Certification: Use certified professionals for installation and servicing tasks.
Example Compliance Checklist
| Activity | Frequency | Description |
|---|---|---|
| Risk Assessment | Initial | Conduct a risk assessment to determine system requirements. |
| System Testing | Initial | Perform comprehensive testing of all system components. |
| Routine Inspections | Quarterly | Conduct routine inspections and testing of the fire alarm system. |
| Component Replacement | As Needed | Replace faulty or aged components to maintain performance. |
| User Training | Upon Installation | Provide training on the operation and maintenance of the system. |
| Service Records | Ongoing | Maintain detailed records of all servicing activities. |
| Compliance Verification | Annually | Verify compliance with local regulations and standards. |
Conclusion
SS 645:2019 provides comprehensive guidelines for the installation, commissioning, maintenance, and servicing of electrical fire alarm systems. Adhering to this standard ensures that fire alarm systems are reliable and effective, providing early warning and helping to protect lives and property in the event of a fire. For detailed procedures and specific requirements, refer to the full SS 645:2019 document and consult with professionals experienced in fire alarm system installation and maintenance.
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Also Download – SS 638: 2018 Code of Practice for Electrical Installations PDF Download
