Why silence is worse than exclusion
A scope that says nothing about a plant room leaves two possibilities open: the cleaner assumes it is included and enters, or assumes it is excluded and it goes uncleaned indefinitely. Both are bad. The first puts a person in a space with electrical, mechanical or atmospheric hazards they have not been briefed on. The second means a space accumulates dust and debris for years until someone notices during an inspection.
Naming the exclusion resolves both. It tells the cleaner not to enter, which is a clear instruction rather than an inference, and it prompts the client to consider who does clean the space, which frequently turns out to be nobody. That second question is often more valuable than the first, because an unaddressed plant room is a genuine housekeeping and fire-safety issue in an industrial building.
