Serviceability Limit State
Category describing events with an annual probability of exceedance larger than 10-2.
NOTE 1 The serviceability limit state (SLS) requires that the system survive with no damage and operate as intended.
NOTE 2 The limiting conditions for normal operation, installation and testing depend on the particular situation.
SLS conditions are defined by the operator and reflect the operating plan. These very important cases define the intended operation.
Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards