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A: General [Table of Contents] A200: Stability

DNV-OS-C105 Structural Design of TLPS (LRFD method)

[-] Sec.8: Accidental Limit States (ALS)
[-] A: General
[-] A100: General

Sec.8
A 100   General

Sec.8 A
101   Requirements concerning accidental events are given in DNV-OS-C101.

Sec.8 A
102   Units shall be designed to be damage tolerant, i.e. credible accidental damages, or events, should not cause loss of global structural integrity. The capability of the structure to redistribute loads should be considered when designing the structure.

Sec.8 A
103   In the design phase, attention shall be given to layout and arrangements of facilities and equipment in order to minimise the adverse effects of accidental events.

Sec.8 A
104   Satisfactory protection against accidental damage may be obtained by a combination of the following principles:
—reduction of the probability of damage to an acceptable level
—reduction of the consequences of damage to an acceptable level.


Sec.8 A
105   Structural design with respect to the ALS shall involve a two-stage procedure considering:
—resistance of the structure to a relevant accidental event
—capacity of the structure after an accidental event.


Sec.8 A
106   Global structural integrity shall be maintained both during and after an accidental event. Loads occurring at the time of a design accidental event and thereafter shall not cause complete structural collapse.

The TLP structure shall be designed to sustain one hull compartment flooding, one tendon flooding or removal of one tendon.

A: General [Table of Contents] A200: Stability