Clasification Society Rules and Regulations - Rules and Regulations for the Classification of Offshore Units, January 2016 - Part 1 REGULATIONS - Chapter 3 Periodical Survey Regulations - Section 16 Safety and communication systems and hazardous areas
Section 16 Safety and communication systems and hazardous areas
16.1 Frequency of surveys
16.1.1 Safety and communication systems and hazardous areas are to be surveyed annually in accordance with the requirements of 2.4. A Special Survey of safety and communication systems and hazardous areas in accordance with the requirements of Pt 1, Ch 3, 16.2 Scope of surveys is to be held at intervals not exceeding five years.
16.2 Scope of surveys
16.2.1 The Surveyor is to examine and be satisfied as to the efficient condition of the following systems as required by Pt 7 SAFETY SYSTEMS, HAZARDOUS AREAS AND FIRE:
- Fire and gas alarm indication and control systems.
- Systems for broadcasting safety information.
- Protection system against gas ingress into safe areas.
- Protection system against gas escape in enclosed and semi-enclosed hazardous areas.
- Emergency shut-down (ESD) systems.
- Protection system against flooding, including:
- Water detection alarm systems for watertight bracings, columns, pontoons, footings, void watertight spaces and chain lockers.
- Bilge level detection and alarm systems on column-stabilised units and in machinery spaces on surface type units.
- Remote operation and indication of watertight doors and hatch covers and other closing appliances.
- Fire detection and extinguishing apparatus.
16.2.2 Satisfactory operation of automatic shut-down devices and alarms is to be verified.
16.2.3 Enclosed hazardous areas such as those containing open active mud tanks, shale shakers, degassers and desanders are to be examined and doors and closures in boundary bulkheads verified as effective. Ventilating systems including duct work, fans, intake and exhaust locations for enclosed restricted areas are to be examined, tested and proven satisfactory. Ventilating-air alarm systems are to be proven satisfactory. In hazardous areas electric lighting, electrical fixtures, and instrumentation are to be examined, proven satisfactory and verified as explosion-proof or intrinsically safe. A complete survey of electrical installations is to be carried out in accordance with Section 9. Electrical motors are to be examined, including closed-loop ventilating systems for large d.c. motors. Automatic power disconnect to motors in case of loss of ventilating air is to be proved satisfactory.
16.2.4 Piping systems for process plant and other systems in hazardous areas are to be checked for leaks, corrosion, and the safe operation of valves. Piping systems are to be tested when required by the Surveyor.
16.2.5 Pressure vessels and safety devices are to be subject to surveys in accordance with the requirements of Pt 1, Ch 3, 17 Pressure vessels for process and drilling plant.
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