Assertion: recovery boiler | /r/HasProperty | upgraded at intervals of 10 – 15 years
Facets:
value: in the meantime
type: TEMPORAL
Source sentences:
text: Second, Tomlinson recovery boilers have a long life span, often around 40 years, and will probably not be replaced until the end of their economic lifetime, and may in the meantime be upgraded at intervals of 10 – 15 years.