Physical and mathematical simulation of biological shielding
Biological shielding physical simulation and angular distribution measurement method within the “Shelter” object conditions using “Ekran” facility was considered. Method for biological shielding mathematical simulation using data obtained with ShD-1 facility is presented. It is shown that results of...
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| Published in: | Вопросы атомной науки и техники |
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| Date: | 2004 |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2004
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| Cite this: | Physical and mathematical simulation of biological shielding / V.G. Batiy, S.I. Glebkin, V.V. Yegorov, Yu.A. Zakrevskiy, V.A. Kouzmenko, A.A. Pravdyvyi, D.V. Fedorchenko // Вопросы атомной науки и техники. — 2004. — № 5. — С. 101-102. — Бібліогр.: 1 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860086727382663168 |
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| author | Batiy, V.G. Glebkin, S.I. Yegorov, V.V. Zakrevskiy, Yu.A. Kouzmenko, V.A. Pravdyvyi, A.A. Fedorchenko, D.V. |
| author_facet | Batiy, V.G. Glebkin, S.I. Yegorov, V.V. Zakrevskiy, Yu.A. Kouzmenko, V.A. Pravdyvyi, A.A. Fedorchenko, D.V. |
| citation_txt | Physical and mathematical simulation of biological shielding / V.G. Batiy, S.I. Glebkin, V.V. Yegorov, Yu.A. Zakrevskiy, V.A. Kouzmenko, A.A. Pravdyvyi, D.V. Fedorchenko // Вопросы атомной науки и техники. — 2004. — № 5. — С. 101-102. — Бібліогр.: 1 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | Biological shielding physical simulation and angular distribution measurement method within the “Shelter” object conditions using “Ekran” facility was considered. Method for biological shielding mathematical simulation using data obtained with ShD-1 facility is presented. It is shown that results of mathematical simulation have satisfactory agreement with those obtained with “Ekran” facility.
Розглянуто метод фізичного моделювання біозахисту та вимірювання кутового розподілення гама-
випромінювання в умовах об’єкта “Укриття” з використанням пристрою “Екран”. Представлений метод
математичного моделювання біозахисту з використанням даних приладу ШД-1. Доведено, що результати математичного моделювання біозахисту задовільно погоджуються з експериментальними даними, які
одержано за допомогою пристрою “Екран”.
Рассмотрен метод физического моделирования биозащиты и измерения углового распределения гамма-
излучения в условиях объекта “Укрытие” с использованием установки “Экран”. Представлен метод математического моделирования биозащиты с использованием данных прибора ШД-1. Показано, что результаты
математического моделирования биозащиты удовлетворительно согласуются с экспериментальными данными, полученными при помощи установки “Экран”.
|
| first_indexed | 2025-12-07T17:20:20Z |
| format | Article |
| fulltext |
PHYSICAL AND MATHEMATICAL SIMULATION OF BIOLOGICAL
SHIELDING
V.G. Batiy, S.I. Glebkin, V.V. Yegorov, Yu.A. Zakrevskiy, V.A. Kouzmenko,
A.A. Pravdyvyi, D.V. Fedorchenko
Interdisciplinary Scientific and Technical Center “Shelter” of Ukraine’s NAS
e-mail: batiy@mntc.org.ua
Biological shielding physical simulation and angular distribution measurement method within the “Shelter” ob-
ject conditions using “Ekran” facility was considered. Method for biological shielding mathematical simulation us-
ing data obtained with ShD-1 facility is presented. It is shown that results of mathematical simulation have satisfac-
tory agreement with those obtained with “Ekran” facility.
PACS: 28.41Te
When conducting experimental researches with ion-
izing radiation sources and implementing works at ra-
dioactively hazardous facilities and polluted areas, the
issue of arrangement of optimal biological shielding of
personnel from external exposure becomes a very im-
portant one. Practical development of biological shield-
ing imposes need for effective methods for its experi-
mental and theoretical simulation. This problem is espe-
cially urgent for the “Shelter” object (SO) because a
number of measures on SO implementation and new safe
confinement creation are planned to be conducted here.
This report covers the issues of biological shielding
simulation within the”Shelter” Object conditions. Both
physical and mathematical simulations are considered.
The aim of physical simulation was to obtain experi-
mental data on spatial, angular and energetic character-
istics of gamma radiation fields with and without shield-
ing near the “Shelter” object. Physical stimulation of bi-
ological shielding was made using the “Ekran” facility,
which is described further. Mathematical simulation
was directed primarily on development of adequate
EDR calculation method behind shielding. Angular dis-
tributions of gamma-field obtained with the help of
ShD-1 facility were used as an input for calculation
method. Results of calculations were compared with ex-
perimental data in order to verify the developed method.
The procedure for measuring angular distributions
and physical simulation of biological shielding is based
on EDR measurement during time-shared or simultane-
ous screening from different sides with lead shields of
diverse thickness of dosimeter sensor (radiometer). For
these purposes, “Ekran” facility was designed and fabri-
cated (Fig. 1).
Design of “Ekran” facility allows screening the in-
ternal space that is sufficient to place a sensor from dif-
ferent sides with lead changeable shields. Initially,
“Ekran” facility construction was designed to measure
the EDR attenuation with possible change of shield
thickness from each side within the limit
of 7,0 to 19,0 mm. In the course of investigations of ra-
diation conditions in different SO areas, deficiency was
revealed of maximum possible total thickness of shields
being placed. This caused impossibility to use facility in
places with high gamma-fields.
The detected lacks were eliminated in the design of
next option of “Ekran” facility. In new design, sliding
groove sizes were made as more wide that enabled in-
stalling of changeable shields with more total thickness
from each direction [1]. For this new facility lead
shields of two types: 7.5 and 12 mm were manufac-
tured. Shielding maximum thickness made 31.5 mm.
Further measurements have proved such parameters to
satisfy enough the SO conditions.
Fig. 1. “Ekran”
facility: 1 – facility
body; 2 – lead
shields; 3 – bracket
to fix derecting unit
When investigating spatial, angular and energetic
characteristics of gamma radiation fields in assumed
WIZ (work implementation zones) for NSC (new safe
confinement) erection, as a radiometer the device
RKS-01 “Stora-TU” was applied. This device has cho-
sen due to high sensitivity in EDR lower range (mea-
surement range of equivalent dose rate of 137Cs gamma
radiation 0.1 …999 µSv/h, measurement error of equiva-
lent dose rate of 137Cs gamma radiation ± 15%).
The procedure for experimental modeling of biologi-
cal shielding covered as regards. In a selected point,
“Ekran” facility body was installed and oriented in rela-
tion to “Shelter” object structures. EDR without shield-
ing was measured. Further, by turns from different sides
(including from above and below, if required), lead
shields of diverse thickness were inserted. EDR value
read-outs inside the facility were fixed. In first turn, the
directions of more intensive radiation sources were
shielded in conformity with angular distribution chart.
Measurements using “Ekran” facility were conduct-
ed in the places were biological shielding most likely
will be implemented and have given a valuable informa-
tion on personnel radiation protection.
PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2004, № 5.
Series: Nuclear Physics Investigations (44), p. 101-102. 101
Mathematical stimulation of biological shielding is
based on applying the data on EDR angular distribution
that were obtained using the ShD-1 facility. It allows
defining, more precise, shielding direction, shield sizes
for selected direction, EDR value degradation factor. On
top of that, an opportunity appears to diversify shielding
combinations with different geometrical parameters for
specified workplace in dependence on directions to
main radiation sources.
When calculating EDR behind the shielding, geome-
try shown in Fig. 2 is applied. EDR survey point is esti-
mated from the formula as follows
∑
=
µ−=
32
1
,
i
d
i ieHH (1)
where iH is EDR before shielding, which is coming
from the i-th direction (appropriate directions are
defined by direction to ShD detectors); μ is linear
attenuation factor; id is shielding thickness in
corresponding direction.
Fig. 2.
EDR es-
timate
geometry
behind
shield
ShD
Directions to ShD
detectors
Shield
d1
d2
d3
d4
Sheild
In mathematical simulation, as attenuation factor de-
pendence of gamma radiation intensity of shielding
thickness the data approximation was used that was ob-
tained underway investigations for real exposure within
the “Shelter” object conditions. As an approximation of
attenuation linear factor the Weibull distribution was
used:
dcxbeax −−=µ )( , (2)
where a=94.343 mm-1, b=93.343 mm-1, c= 0,005,
d = 1,182.
The results of estimates that were made with the
help of this program were compared to experimental
data on integral EDR measurements conducted under
particular shielding from different directions. One
should note, satisfactory fit is observed, divergence of
results is within the range of 15…30% (Figs.3,4).
mR/h
Fig. 3. Results of biological shielding stimulation
() and EDR experimental measurements(). Point Э16,
30 mm shielding thickness
mR/h
Fig. 4. Results of biological shielding simulation ()
and EDR experimental measurement (). Point Э16,
7.5 mm shielding thickness
Thus, mathematical model being proposed describes
at a sufficient rate the EDR values being surveyed and
can be effectively used in biological shield modeling,
especially within the conditions of strong radiation
fields, where the use of physical modeling will bring to
considerable dose loading of personnel.
REFERENCE
1. Optimization of radiation protection and probabilistic
safety analysis during implementation of activities
aimed at “Shelter” Object conversion. Rep. on RDW
(interium). ISTC “Shelter” of Ukraine’s NAS.
Chornobyl: 2002, 143 p.
ФИЗИЧЕСКОЕ И МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ БИОЗАЩИТЫ
В.Г. Батий, С.И. Глебкин, В.В. Егоров, Ю.А. Закревский, В.А. Кузьменко, А.А. Правдивый, Д.В. Федорченко
Рассмотрен метод физического моделирования биозащиты и измерения углового распределения гамма-
излучения в условиях объекта “Укрытие” с использованием установки “Экран”. Представлен метод матема-
тического моделирования биозащиты с использованием данных прибора ШД-1. Показано, что результаты
математического моделирования биозащиты удовлетворительно согласуются с экспериментальными данны-
ми, полученными при помощи установки “Экран”.
ФІЗИЧНЕ ТА МАТЕМАТИЧНЕ МОДЕЛЮВАННЯ БІОЗАХИСТУ
В.Г. Батій, С.І. Глебкін, В.В. Єгоров, Ю.А. Закревський, В.О. Кузьменко, А.А. Правдивий, Д.В. Федорченко
Розглянуто метод фізичного моделювання біозахисту та вимірювання кутового розподілення гама-
випромінювання в умовах об’єкта “Укриття” з використанням пристрою “Екран”. Представлений метод
математичного моделювання біозахисту з використанням даних приладу ШД-1. Доведено, що результати
102
математичного моделювання біозахисту задовільно погоджуються з експериментальними даними, які
одержано за допомогою пристрою “Екран”.
103
ФІЗИЧНЕ ТА МАТЕМАТИЧНЕ МОДЕЛЮВАННЯ БІОЗАХИСТУ
|
| id | nasplib_isofts_kiev_ua-123456789-80557 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T17:20:20Z |
| publishDate | 2004 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Batiy, V.G. Glebkin, S.I. Yegorov, V.V. Zakrevskiy, Yu.A. Kouzmenko, V.A. Pravdyvyi, A.A. Fedorchenko, D.V. 2015-04-18T20:28:42Z 2015-04-18T20:28:42Z 2004 Physical and mathematical simulation of biological shielding / V.G. Batiy, S.I. Glebkin, V.V. Yegorov, Yu.A. Zakrevskiy, V.A. Kouzmenko, A.A. Pravdyvyi, D.V. Fedorchenko // Вопросы атомной науки и техники. — 2004. — № 5. — С. 101-102. — Бібліогр.: 1 назв. — англ. 1562-6016 PACS: 28.41Te https://nasplib.isofts.kiev.ua/handle/123456789/80557 Biological shielding physical simulation and angular distribution measurement method within the “Shelter” object conditions using “Ekran” facility was considered. Method for biological shielding mathematical simulation using data obtained with ShD-1 facility is presented. It is shown that results of mathematical simulation have satisfactory agreement with those obtained with “Ekran” facility. Розглянуто метод фізичного моделювання біозахисту та вимірювання кутового розподілення гама-
 випромінювання в умовах об’єкта “Укриття” з використанням пристрою “Екран”. Представлений метод
 математичного моделювання біозахисту з використанням даних приладу ШД-1. Доведено, що результати математичного моделювання біозахисту задовільно погоджуються з експериментальними даними, які
 одержано за допомогою пристрою “Екран”. Рассмотрен метод физического моделирования биозащиты и измерения углового распределения гамма-
 излучения в условиях объекта “Укрытие” с использованием установки “Экран”. Представлен метод математического моделирования биозащиты с использованием данных прибора ШД-1. Показано, что результаты
 математического моделирования биозащиты удовлетворительно согласуются с экспериментальными данными, полученными при помощи установки “Экран”. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Применение ядерных методов Physical and mathematical simulation of biological shielding Фізичне та математичне моделювання біозахисту Физическое и математическое моделирование биозащиты Article published earlier |
| spellingShingle | Physical and mathematical simulation of biological shielding Batiy, V.G. Glebkin, S.I. Yegorov, V.V. Zakrevskiy, Yu.A. Kouzmenko, V.A. Pravdyvyi, A.A. Fedorchenko, D.V. Применение ядерных методов |
| title | Physical and mathematical simulation of biological shielding |
| title_alt | Фізичне та математичне моделювання біозахисту Физическое и математическое моделирование биозащиты |
| title_full | Physical and mathematical simulation of biological shielding |
| title_fullStr | Physical and mathematical simulation of biological shielding |
| title_full_unstemmed | Physical and mathematical simulation of biological shielding |
| title_short | Physical and mathematical simulation of biological shielding |
| title_sort | physical and mathematical simulation of biological shielding |
| topic | Применение ядерных методов |
| topic_facet | Применение ядерных методов |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/80557 |
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