Risk Disclaimer & Safety Notice

This Risk Disclaimer accompanies every proposal, quotation, statement of work and post-delivery support package issued by SGT Systems. It defines the safety boundary between SGT’s deliverables (engineering, hardware supply, software, commissioning) and the operating environment for which the Client is responsible.

Industrial automation systems can — if misused, mis-installed or operated outside their specification — cause electrocution, fire, mechanical injury, chemical release, environmental damage, equipment loss and loss of production. Read this document before procurement decisions and before powering up any installed system.

• Electrical work must be carried out by licensed electricians qualified to the relevant voltage class under Bangladesh statutory rules.
• Process & instrumentation work should follow ISA-101 / IEC 61511 guidance where applicable.
• PLC, SCADA and HMI configuration changes in production should be made only by trained engineers with documented change-control approval.
• Untrained or unauthorised access to control panels, server rooms or field instruments is strictly prohibited.

• High voltage: Many control panels carry 230 V AC, 400 V three-phase or higher. Treat every conductor as live until tested otherwise.
• Isolation: Before any intrusive work, isolate the upstream supply at the source, verify zero energy with a calibrated tester, and confirm with a known live source after testing.
• Lockout / Tagout (LOTO): Apply mechanical locks and warning tags on isolators during maintenance. Only the person who applied the lock should remove it.
• Earthing & bonding: Ensure proper earthing per IEC/BNBC standards before energisation; check earth-loop impedance periodically.
• Personal protective equipment: Insulated tools, arc-rated gloves, safety eyewear and footwear are mandatory for live work.
• Surge & transient protection: Install SPDs as specified in the design; do not bypass them.

• SIL classification: Safety-Instrumented Functions must be specified by the Client (or their licensed safety consultant) based on a HAZOP / LOPA study. We design to the agreed SIL rating; we do not unilaterally set safety integrity levels.
• Fail-safe design: Where life-safety is involved, control loops should default to a safe state on power loss, communication loss or sensor failure. These behaviours must be documented in the functional specification.
• Redundancy: Hot-standby controllers, redundant power, dual sensors and N+1 networking are available on request. Where the Client has declined redundancy on cost grounds, that decision should be recorded in writing.
• Independent safety layers: A SCADA/HMI alarm is not a substitute for a hard-wired emergency-stop circuit or mechanical safety device.
• Validation: Factory Acceptance Tests (FAT) and Site Acceptance Tests (SAT) are part of every safety-critical project and require Client sign-off.

All supplied hardware operates within published manufacturer envelopes. Operating outside these envelopes voids the warranty and may cause unsafe behaviour.

Always consult the OEM datasheet supplied with the equipment and follow the most restrictive parameter where multiple devices share an enclosure.

• Conducting or commissioning a site risk assessment (HAZID / HAZOP) before installation, and sharing the findings with SGT.
• Ensuring compliance with all applicable regulations, including the Factories Act 1965, Bangladesh National Building Code, Environmental Conservation Act 1995, Bangladesh Energy Regulatory Commission orders and any sector-specific rules.
• Providing safe, code-compliant electrical infrastructure (earthing, neutral bonding, isolators, RCDs, surge protection) up to our termination points.
• Training operators and maintenance staff in the safe use of the delivered system; refresher training when SOPs change.
• Implementing a documented change-management process for any modification to logic, set-points, alarms or wiring after commissioning.
• Performing periodic preventive maintenance per the maintenance manual; logging inspections; calibrating sensors to manufacturer intervals.
• Maintaining secure access controls — physical, network and credential — for SCADA, HMI, VPN and remote-access tools.
• Notifying SGT of any incident, near-miss, abnormal behaviour or unauthorised modification as soon as reasonably possible.

• Misuse, abuse or operation of the system outside the documented specification or operating procedure.
• Unauthorised modification, repair, addition or removal of components by personnel not approved by SGT.
• Operation in ambient conditions exceeding the temperature, humidity, vibration, voltage or EMC limits defined by the manufacturer.
• Integration with third-party systems, equipment or interfaces that have not been reviewed and approved by SGT in writing.
• Failure of the Client to perform documented preventive maintenance, calibration or inspection on schedule.
• Software defects which SGT has patched, hot-fixed or worked around in a timely manner where the Client has not deployed the fix within the recommended window.
• Loss of production, revenue, data, goodwill or any other indirect or consequential damage.
• Force majeure events, including but not limited to natural disasters, civil unrest, war, pandemic, regulatory action, prolonged power or telecom outages.
• Cyber-security incidents arising from weak Client-managed credentials, unpatched operating systems or absence of network segmentation.

By accepting an SGT Systems quotation, signing a statement of work, or taking delivery of SGT-supplied hardware, the Client acknowledges that they have read, understood and accepted the safety notices and limitations set out in this Risk Disclaimer, and undertakes to communicate the relevant portions to all personnel involved in installation, operation and maintenance of the system.