23. The operator shall ensure that all chemical substances, including process fluids and diesel fuel, waste material, drilling fluid and drill cuttings generated at an installation, are handled in a way that does not create a hazard to safety or the environment.

• 24. (1) The operator shall ensure that any work or activity ceases without delay if that work or activity

  • (a) endangers or is likely to endanger the safety of persons;

  • (b) endangers or is likely to endanger the safety or integrity of the well or the installation; or

  • (c) causes or is likely to cause pollution.

• (2) If the work or activity ceases, the operator shall ensure that it does not resume until it can do so safely and without pollution.

25. The operator shall ensure that

• (a) all wells, installations, equipment and facilities are designed, constructed, tested, maintained and operated to prevent incidents and waste under the maximum load conditions that may be reasonably anticipated during any operation;

• (b) a comprehensive inspection that includes a non-destructive examination of critical joints and structural members of an installation and any critical drilling or production equipment is made at an interval to ensure continued safe operation of the installation or equipment and in any case, at least once in every five-year period; and

• (c) records of maintenance, tests and inspections are kept.

26. The operator shall ensure that

• (a) the components of an installation and well tubulars, Christmas trees and wellheads are operated in accordance with good engineering practices; and

• (b) any part of an installation that may be exposed to a sour environment is designed, constructed and maintained to operate safely in that environment.

• 27. (1) The operator shall ensure that any defect in the installation, equipment, facilities and support craft that may be a hazard to safety or the environment is rectified without delay.

• (2) If it is not possible to rectify the defect without delay, the operator shall ensure that it is rectified as soon as the circumstances permit and that mitigation measures are put in place to minimize the hazards while the defect is being rectified.

28. The operator shall ensure that

• (a) the drilling fluid system and associated monitoring equipment is designed, installed, operated and maintained to provide an effective barrier against formation pressure, to allow for proper well evaluation, to ensure safe drilling operations and to prevent pollution; and

• (b) the indicators and alarms associated with the monitoring equipment are strategically located on the drilling rig to alert onsite personnel.

• 29. (1) The operator shall ensure that every marine riser is capable of

  • (a) furnishing access to the well;

  • (b) isolating the well-bore from the sea;

  • (c) withstanding the differential pressure of the drilling fluid relative to the sea;

  • (d) withstanding the physical forces anticipated in the drilling program; and

  • (e) permitting the drilling fluid to be returned to the installation.

• (2) The operator shall ensure that every marine riser is supported in a manner that effectively compensates for the forces caused by the motion of the installation.