Leak Detection - Requirements

Requirements

API 1155(replaced by API RP 1130) defines the following important requirements for an LDS:

• Sensitivity: An LDS must ensure that the loss of fluid as a result of a leak is as small as possible. This places two requirements on the system: it must detect small leaks, and it must detect them quickly.
• Reliability: The user must be able to trust the LDS. This means that it must correctly report any real alarms, but it is equally important that it does not generate false alarms.
• Accuracy: Some LDS are able to calculate leak flow and leak location. This must be done accurately.
• Robustness: The LDS should continue to operate in non-ideal circumstances. For example, in case of a transducer failure, the system should detect the failure and continue to operate (possibly with necessary compromises such as reduced sensitivity).