Wyniki wyszukiwania - BazTech

1

A new concept of fusion neutron monitoring for PF-1000 device

Jednorog S., Laszynska E., Bienkowska B., Ziolkowski A., Paduch M., Szewczak K., Mikszuta K., Malinowski K., Bajdel M., Potrykus P.

Nukleonika

|

2017

|

Vol. 62, No. 1

17--22

EN

The power output of plasma experiments and fusion reactors is a crucial parameter. It is determined by neutron yields that are proportional and directly related to the fusion yield. The number of emitted neutrons should be known for safety reasons and for neutron budget management. The PF-1000 is the large plasma facility based on the plasma focus phenomenon. PF-1000 is operating in the Institute of Plasma Physics and Laser Microfusion in Warsaw. Neutron yield changes during subsequent pulses, which is immanent part of this type device and so it must be monitored in terms of neutron emission. The reference diagnostic intended for this purpose is the silver activation counter (SAC) used for many years. Our previous studies demonstrated the applicability of radio-yttrium for neutron yield measurements during the deuterium campaign on the PF-1000 facility. The obtained results were compared with data from silver activation counter and shown linear dependence but with some protuberances in local scale. Correlation between results for both neutron monitors was maintained. But the yttrium monitor registered the fast energy neutron that reached measurement apparatus directly from the plasma pinch. Based on the preliminary experiences, the yttrium monitor was designed to automatically register neutron-induced yttrium activity. The MCNP geometrical model of PF-1000 and yttrium monitor were both used for calculation of the activation coefficient for yttrium. The yttrium monitor has been established as the permanent diagnostic for monitoring fusion reactions in the PF-1000 device.

2

Occupational exposure to Am-Be neutron calibration source mounted in OB26 shielding container

Szewczak K., Jednorog S.

Nukleonika

|

2014

|

Vol. 59, No. 3

97--103

EN

Laboratory for Dosimetric and Radon Instruments Calibration which is a part of Central Laboratory for Radiological Protection (CLRP) in Warsaw is equipped with 241Am-Be neutron calibration source with activity of 185 GBq since 1999. The capsule was mounted in the OB26 type shielding container. The control room is separated from the above source by a concrete wall of 0.5 m in thickness. The calibration hall is adjacent to one side of the offi ce room. To comply with the requirements of the radiological protection system, the occupational exposure of persons that are working both in the offi ce and control room needs to be assessed. Two methods were involved for ambient dose equivalent rate determination. The active instrument measurements (AIMs) performed with the Berthold LB6411 neutron probe and the Monte Carlo simulation method (MCS) based on MCNP5 code. These estimations were completed for fi ve reference points. Additionally the γ-radiation component was measured by RSS131 ionisation chamber. An increased value of the ambient dose equivalent rate from neutrons was observed in two reference positions. The fi rst observation was done in the control room while the second one in the offi ce room. Expected individual dose equivalents were evaluated based on the results of the AIM and on the expected working time in particular reference points. The annual individual dose equivalent associated with calibration activities using mentioned neutron source was estimated at maximum 0.8 mSv.

3

Zmiany w zarządzaniu eksploatacją środków trwałych

Szewczak K.

Problemy Eksploatacji

|

2012

|

nr 1

109-118

PL

W turbulentnym otoczeniu konieczne jest stałe dokonywanie zmian w systemie zarządzania przedsiębiorstwem w celu dostosowania metod zarządzania do tych zmian. Dotyczy to także zmian w metodach zarządzania eksploatacją środków trwałych. W oparciu o doświadczenia japońskie i amerykańskie ukształtowała się teoria obsługiwania od obsługiwania prewencyjnego do "najlepszych praktyk" w ramach koncepcji biznesowej strategii zarządzania eksploatacją.

EN

In turbulent environment it is necessary permanently to make changes in enterprise management system in order to adjust methods to the changes, what also causes changes in asset operation management. Based on Japanese and American experiences it was formed maintenance theory - from preventive maintenance to "best practices" - within the framework of business concept of operation management strategy.

4

O pewnych aspektach innowacyjności gospodarki

Szewczak K.

Problemy Jakości

|

2009

|

R. 41, nr 3

12-16

EN

The article presents some of the indicators of the innovation level in the Polish economy, including: number of patents in the hi-tech sector (in thousand per million residents), structure of spending on innovation activities in the industrial sector, Polish licenses sold, a share of sold production of new and modernized goods in production sold to industrial sector. Some of the reasons for a Iow level of innovation in the economy arę problems concerning organizational cul-ture, workers' attitude and utilization of tangible assets.

5

Jakość "systemu przedsiębiorstwo"

Szewczak K.

Problemy Jakości

|

2005

|

R. 37, nr 1

20--23

PL

Zasoby ludzkie są najważniejszym zasobem w procesie transformacji z punktu widzenia jakości systemu.

6

Eksploatacja zasobów przedsiębiorstwa - zarządzanie z aspektami ekologii

Szewczak K.

Problemy Eksploatacji

|

2003

|

nr 1

31-36

PL

W artykule przedstawiono problematykę wdrażania strategii zarządzania poprzez zarządzanie operacyjne wykorzystujące koncepcję eksploatacji zasobów przedsiębiorstwa w celu podwyższania wartości przedsiębiorstwa jako celu strategicznego akcjonariuszy. Zwrócono uwagę na wpływ eksploatacji zasobów na ochronę środowiska.

EN

The article deals with the problem of implementing management strategies with the help of operational management, which is based on the theory of company resources exploatation aimed at increasing the company values as a strategis goal for shareholdes.