title: Appropriate concrete for nuclear reactor shielding.
abstract: A survey for the neutron activation significant trace-minerals in limestones from different sites in Syria has been carried out. The specific saturation activation radioactivity was calculated and compared to the clearance levels. The results show that the limestone composition varies significantly from one site to another. For example Al-Tamoura site has ∑(C(i)/CL(i))≤1 at thermal neutron flux less than 10(7) (n cm(-2) s(-1)), while the limestone from other the three sites has ∑(C(i)/CL(i))≤1 at a flux less than 3×10(6) (n cm(-2) s(-1)).
authors.affiliation: A.E.C.S, Department of Nuclear Engineering, Syrian Arab Republic.
authors.forename: S
authors.initials: S
authors.lastname: Alhajali
authors.affiliation: A.E.C.S, Department of Technical service, Syrian Arab Republic.
authors.forename: S
authors.initials: S
authors.lastname: Yousef
authors.affiliation: A.E.C.S, Department of Radiation Protection and Safety, Syrian Arab Republic.
authors.forename: B
authors.initials: B
authors.lastname: Naoum
keywords: Biological concrete; Reactor concrete; Reactor shielding; Shielding concrete