ISO 15690 pdf download Radiological protection — Recommendations for dealing with discrepancies between personal dosimeter systems used in parallel
This International Standard provides recommendations for dealing with discrepancies betweendosimeter systems usedin parallel, in order to comply with established criteria and national regulations
This International Standard gives guidelines for investigating and analysing the discrepancies betweenthe results of personal dosimetry systems, using two or more dosimeters (often one passive dosimeterand one active dosimeter), worn in parallel by the same worker.
This International Standard identifies when the difference between measurements made by personadosimetry systems used in parallel is considered significant and, hence, needs to be investigated.
lt specifies the treatment of this difference.
In this International Standard, only the personal dose equivalent,H,(10), from photon radiation isconsidered.Exposure to beta particles and neutrons might need to be taken into account when identifieddiscrepancies are investigated.
This International Standard applies to situations where the period of wearing can be integrated to thesame period oftime for both systems.
2 Normative references
The following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument(including any amendments) applies.
ISO 14146,Radiation protection – Criteria and performance limits for the periodic evaluation of processorsof personal dosemeters for X and gamma radiation
IEC 61526, Measurement ofpersonal dose equivalents Hp(10) and Hp(0,07) for X, gamma, neutron and betaradiations – Direct reading personal dose equivalent meters
IEC 62387, Radiation protection instrumentation – Passive integrating dosimetry systems for personal andenvironmental monitoring ofphoton and beta radiation
3 Terms and definitions
For the purposes ofthis document, the following terms and definitions apply
personal dose equivalentHp(d)dose equivalent in soft tissue measured at an appropriate depth, d, below a specified point of the body
Note 1 to entry: For strongly penetrating radiation, a depth of 10 mm is frequently recommended. For weaklypenetrating radiation, a depth of 3 mm for the lens of the eye and 0,07 mm for the skin are employed. For thesepurposes, Hp(d) is written as Hp(10), H(3), and H(0,07),respectively.
Note 2 to entry: This definition ensures that the personal dose equivalent, H p (10), for a whole-body exposure to strongly penetrating radiation, represents an estimate of the effective dose and the equivalent dose for deeplying organs.
Note 3 to entry: In many instances, the angular distribution needs to be considered for these situations. The personal dose equivalent is defined as H p (d,α), where α represents the angle of incidence.
Note 4 to entry: H p (d,α) cannot be directly measured. It is approximated using an ICRU slab phantom.
3.2 Personal dosimeters
personal dosimeter used to determine the personal dose equivalent and issued by a measurement office in compliance with national regulations
Note 1 to entry: In some countries, the approved dosimeters are named legal, official, or accredited dosimeters.