Соответствующая норма
Spain
Practice Relating to Rule 124. ICRC Access to Persons Deprived of Their Liberty
Spain’s LOAC Manual (1996) provides that the ICRC shall be allowed to visit POWs (prisoners of war) and internees under the usual conditions. 
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, §§ 6.4.j and 6.8.j.
Spain’s LOAC Manual (2007) states: “Representatives or delegates of the ICRC and the Protecting Powers must be allowed to visit all places where prisoners of war [and detainees] are being held and interview them, without witnesses, as often as they wish.” 
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, §§ 6.4.j and 6.8.j.
The manual further states:
Visits to places where prisoners and internees are being held by representatives of the Protecting Powers or the International Committee of the Red Cross may only be prohibited “for reasons of imperative military necessity”, and then only as an exceptional and temporary measure. 
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, § 2.4.a.(4).