Watanabe, Tomoo; Ozawa, Kazumasa; Otsuka, Jiro; Sasaki, Kazuichi; Sawada, Makoto
JNC TN4440 2005-001, 40 Pages, 2005/07
no abstracts in English
Watanabe, Tomoo; Ozawa, Kazumasa; Otsuka, Jiro; SASAKI, Kazuhito; Sawada, Makoto
JNC TN4410 2004-003, 20 Pages, 2004/07
The FBR cycle training facility consists of sodium handling training facility and maintenance training facility, and is being contributed to train for the operators and maintenance workers of the prototype fast breeder reactor "Monju". So far, some training courses have been added to the both training courses of sodium handling technologies maintenance technologies in every year in order to carry out be significant training for preparation of Monju restarting. As encouragement of the sodium handling technology training in 2003FY, the sodium heat transfer basic course was equipped as the 9th sodium handling training course with the aims of learning basic principal technology regarding sodium heat transfer. While, for the maintenance training course, a named "Monju Systems Learning Training Course", which aims to learn necessary knowledge as the engineers related Monju development, was provided newly in this year as an improvement concerned the maintenance course. In 2003FY, nine sodium handling technology training courses were carried out total 33 times and 235 trainees took part in those training courses. Also, nine training courses concerning the maintenance technology held 15 times and total 113 trainees participated. On the other hand, the 4th special lecture related sodium technology by France sodium school instructor was held on Mar. 15-17 and 34 trainees participated. Consequently, a cumulative trainees since October in 2000 opened the FBR cycle training facility reached to 1,236 so for.
Watanabe, Tomoo; Ozawa, Kazumasa; Sasaki, Kazuichi; Sawada, Makoto
JNC TN4410 2003-010, 21 Pages, 2003/11
The FBR cycle training facility consists of sodium handling training facility and maintenance training facility, and is being contributed training of engineer included operators and maintenance workers for the prototype fast breeder reactor Monju mainly. Both training courses of sodium handling technology and maintenance technology have been improved in every year to provide for Monju restarting. In 2002FY, as a result of reflecting of learning a lesson from the Joyo maintenance building fire accident occurred in Oct.31, 2001 due to spontaneous ignition of sodium, the sodium handling technology license course was added/ Besides, regarding on maintenance training, the general maintenance technology course and the ultrasonic testing course as one of non-destructive inspection course were also added with aims of expanding maintenance training. Consequently, as the present training course concerning FBR cycle training in 2002FY, eight training courses are provided as the sodium training course and also the maintenance training course has the 9 training courses. These training courses were held total 47 times for both sodium and maintenance training courses, i.e. sodium course is 30 times and 17 times is as maintenance course. Concerning total participated numbers of the FBR cycle training in 2002FY is 363 trainees, its breakdown is 247 trainees for 30 times of sodium training courses and 116 trainees is for 17 times of maintenance training courses. In consequence, total participated numbers for three years so far reached to 888 trainees(616 for sodium courses and 272 for maintenance courses).
Watanabe, Tomoo; Ozawa, Kazumasa; ; ;
JNC TN4410 2002-002, 17 Pages, 2002/07
The FBR Cycle Training Facility has been operating since Sep. 2000 for staff of FBR "Monju" and ATR "Fugen" and fireman of the local community, etc.. In 2000, 6 courses of the sodium handling training were held 22 times and a1so eight courses of the maintenance training were 11 times and total participants were 305. In order to grade up the trainings for providing restarting of "Monju", the corresponding training course on sodium piping leakage accident was added as newly sodium handling training course and partial contents of some courses were devised based on some comments by the training discussing committee organized in our center. In 2001, seven sodium handling training courses were carried out 25 times and eight maintenance courses were conducted 11 times and total participated number was 220, i.e. 157 trainees for sodium training courses and 63 trainees for maintenance training courses. Additionally, since a new licensed sodium training course for sodium handling workers included head of worker will be introduced from next year owing to the fire accident of maintenance building in the experimental fast reactor "JOYO" occurred Oct. in 2001, which was coursed by sodium spontaneous combustion due to inefficient handling on tidy up of the sodium handling working, training curriculum, training text and questions for examination are provided as for preparing its course cooperated with Oarai Engineering Center.
*; Ozawa, Kazumasa*; *; *
JNC TJ9440 99-016, 103 Pages, 1999/03
Thermal striping phenomena induced by the alternate flows of cold and hot sodium impinging against a horizontal test piece surface were investigated. The temperatures of sodium and structure material were measured simultaneously using thermocouples located various positions. From the present experiments, the following results have been obtained. (1)The alternate flows of cold and hot sodium with the frequency from 0.01Hz to 0.2Hz and the temperature difference of 240C were composed using the opening and closing operations of a cold and a hot sodium valve alternately. (2)The change and fluctuation of temperature amplitude in sodium decreases with decreasing of frequency component. (3)Amplitude component of temperature vibration decreased extremely in the structure material inside of the test piece than sodium. (4)Amplitude component of temperature vibration in the structure material increases in inverse proportion to decreasing of frequency component. (5)Amplitude component change of temperature vibration in the structure material decreases with decreasing of frequency component. (6)Fine fluctuations of temperature vibration in the structure material increases with increasing of frequency component, but it was limited near the surface of material. (7)Fine fluctuations of temperature vibration in the structure material decreases with decreasing of frequency component, but it was penetrated into the deep inner part of the material.
*; *; Ozawa, Kazumasa*
PNC TJ9124 98-007, 124 Pages, 1998/10
no abstracts in English