Related Rule
Netherlands
Practice Relating to Rule 42. Works and Installations Containing Dangerous Forces
Section B. Placement of military objectives near works and installations containing dangerous forces
The Military Manual (1993) of the Netherlands restates the content of Article 56(5) of the 1977 Additional Protocol I. 
Netherlands, Toepassing Humanitair Oorlogsrecht, Voorschift No. 27-412/1, Koninklijke Landmacht, Ministerie van Defensie, 1993, p. V-10, § 8.
The Military Manual (2005) of the Netherlands states:
The parties to a conflict must try to avoid locating military objectives near dams, weirs, dikes and power stations. Defensive installations built near such objects are permitted if their sole purpose is to defend the objects, and the armaments are limited to weapons suitable only for the defence of such objects. 
Netherlands, Humanitair Oorlogsrecht: Handleiding, Voorschift No. 27-412, Koninklijke Landmacht, Militair Juridische Dienst, 2005, § 0539.
The Report on the Practice of the Netherlands notes that no internal legislation has been adopted to implement the required separation between military structures and protected works and installations. 
Report on the Practice of the Netherlands, 1997, Chapter 1.9.