Norma relacionada
Spain
Practice Relating to Rule 147. Reprisals against Protected Objects
Section F. Works and installations containing dangerous forces
Spain’s LOAC Manual (1996) lists “works and installations containing dangerous forces” among the persons and objects against whom/which the taking of reprisals is prohibited and refers to Article 56 of the 1977 Additional Protocol I. 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Publicación OR7-004, 2 Tomos, aprobado por el Estado Mayor del Ejército, Division de Operaciones, 18 March 1996, Vol. I, § 3.3.c.(5)(b).
Spain’s LOAC Manual (2007), referring to Article 56 of the 1977 Additional Protocol I, lists “works and installations containing dangerous forces” among the objects against which the taking of reprisals is prohibited. 
Spain, Orientaciones. El Derecho de los Conflictos Armados, Tomo 1, Publicación OR7–004, (Edición Segunda), Mando de Adiestramiento y Doctrina, Dirección de Doctrina, Orgánica y Materiales, 2 November 2007, § 3.3.c.(5); see also § 11.8.c.
Spain’s Penal Code (1995) provides:
[Shall be punished] whoever, in the event of an armed conflict: … attacks or makes the object of reprisals works or installations containing dangerous forces, if such attack may cause the release of dangerous forces and consequent severe losses among the civilian population, except if such works or installations are used in regular, significant and direct support of military operations and if such attack is the only feasible way to terminate such support. 
Spain, Penal Code, 1995, Article 613(1)(d).
Spain’s Penal Code (1995), as amended in 2010, states:
1. Anyone who in the event of an armed conflict commits or orders to be committed any of the following acts shall be punished with four to six years’ imprisonment:
f. … [R]eprisals [against] works and installations containing dangerous forces, if such attacks may cause the release of such forces and cause, as a result, considerable losses among the civilian population, except in the case that such works or installations are regularly used in significant and direct support of military operations and that such attacks are the only feasible means of ending such support;
2. … In all other cases mentioned in the above article, the higher sentence can be imposed when extensive and important destructions are caused to the property, objects or installations or [the acts] are of extreme gravity. 
Spain, Penal Code, 1995, as amended on 23 June 2010, Article 613(1)(f) and (2).