Extending the POP on a severable, FFP type contract for Task Orders.

Circling back on a prior thread. 

What guidance allows for an ext of the POP if the vendor is late on deliveries under a Task Order? We want to 

copied from the prior thread.

Also, the phrase "severability of 12 months" does not make sense. Services are either severable or nonseverable (entire). A task order is either for severable services or nonseverable services. When using annual appropriations, a contract or order for severable services may not exceed one year (12 months) in duration. See FAR 32.703-3( b ).