Tsunami warning system. A tsunami warning system (TWS) is used to detect tsunamis in advance and issue warnings to prevent loss of life and damage. It is made up of two equally important components: a network of sensors to detect tsunamis and a communications infrastructure to issue timely alarms to permit evacuation of the coastal areas.
The law also requires nursing facilities to maintain medical records for each patient. The records must be kept for seven years after the patient is discharged from the facility. If the patient is a minor, the records must be kept for one year after the patient reaches the age of 18, but for at least seven years.
Duplicate records shall be maintained by the laboratory for at least two years. Hospitals must keep copies of tracings, reports, printouts, films, scans, and other image records at least five years. Skilled nursing/long term care facilities must retain medical records five years following death or discharge.-ray films are to be retained for seven years. Nursing homes must retain medical records a minimum of seven years after the last entry or retain until 24 years of age, whichever is longer. Physicians are required to maintain records for at least seven years.