What are the two requirements that must be met prior to initiating system disinfection?

The two requirements that must be met prior to initiating system disinfection are:  Developing Disinfection profiles and Benchmarks

Disinfection profile contains description of the proposed change in disinfection procedure and it also has analysis on to what extent that the process can affect the current standard and status of disinfection of the place. Monitoring for 12 months (consecutively) is required.

Benchmarks are the results or initial changes happened.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.