Limitations for use as mentioned in the first subsection, can ensue from the loads that the facility and its individual parts shall be able to withstand, cf.
Section 11 of the Facilities Regulations. The loads can include chemical loads, environmental loads such as waves, wind and temperature and functional loads such as pressure, weight, temperature and vibration.
When conducting drilling and well activities with mobile facilities, the vertical movements of the facility and movements brought about by resonance between the wave frequency and the frequency of the facility itself should also be taken into account, as well as movements in the event of loss of position due to anchor line breakage or drift, or because of dynamic positioning failure. Cf.
Section 50 of the Facilities Regulations.
In order to fulfil the requirement for use as mentioned in the first subsection, the
NORSOK Z-015N standard should be used for temporary equipment.
Status as mentioned in the second subsection, means, inter alia, the backlog of preventive maintenance and the outstanding corrective maintenance.
When using facilities, systems and equipment beyond the original intended period, the party responsible should systematically review the effects of degradation and changes that have occurred, and expected degradation and changes over extended periods. In order to fulfil requirements for the conditions for use for an extended period, updated knowledge, data and information should be taken into account. The assessments should be based on
Norwegian Oil and Gas’ guidelines 122. For structures and marine systems, the
NORSOK N-006 standard should also be used. For classified facilities
DNVGL-RU-OU-0300, Chapter 2, Section 1, point 5 should be taken into account.