Download pdf - JAEA-Technology 2011-022 · 2013. 2. 25. · JAEA-Technology JAEA-Technology 2011-022 Department of JMTR Neutron Irradiation and Testing Reactor Center Oarai Research and Development

JAEA

-TechnologyJAEA-Technology

2011-022

Department of JMTRNeutron Irradiation and Testing Reactor Center

Oarai Research and Development Center

大洗研究開発センター照射試験炉センター

材料試験炉部

July 2011

Japan Atomic Energy Agency 日本原子力研究開発機構

伊藤正泰　川又一夫　田山義伸　金澤賢治米川実　中川哲也　近江正男　岩松重美

Masayasu ITO, Kazuo KAWAMATA, Yoshinobu TAYAMA, Yoshiharu KANAZAWAMinoru YONEKAWA, Tetsuya NAKAGAWA, Masao OHMI and Shigemi IWAMATSU

JMTRホットラボにおける中性子線しゃへい強化Neutron Shielding Reinforcement in the JMTR Hot Laboratory

JAEA-Technology 2011-022

JMTR

+

2011 5 16

JMTR

Japan Materials Testing Reactor 23 JMTR

JMTR

21

311-1393 4002

+


Neutron Shielding Reinforcement in the JMTR Hot Laboratory

Masayasu ITO, Kazuo KAWAMATA, Yoshinobu TAYAMA, Yoshiharu KANAZAWA

Minoru YONEKAWA, Tetsuya NAKAGAWA, Masao OHMI and Shigemi IWAMATSU+

Department of JMTR

Neutron Irradiation and Testing Reactor Center

Oarai Research and Development Center

Japan Atomic Energy Agency

Oarai-machi, Higashiibaraki-gun, Ibaraki-ken

Received May 16, 2011

Hot laboratory are facilities that execute the post irradiation examination of sample irradiated in material

testing reactors etc. The handling of high burn-up fuel is scheduled in the JMTR Japan Materials Testing

Reactor hot laboratory with JMTR re-operate in FY 2011.

This report describes evaluation, production and installation of shielding of hot cells in the JMTR hot

laboratory.

Keywords Hot Laboratory, JMTR, High Burn-up Fuels, Neutron Shielding

Present study was entrusted from Nuclear and Industrial Safety Agency of Ministry of Economy, Trade and

Industry of Japan.

+ Fuels and Materials Department


1 ····················································································································································· 1

2 ·································································································· 2

3 ·················································································· 2

3.1 ·············································································································································· 2

3.2 ·········································································································································· 2

3.3 ······················································································································ 3

3.4 ······························································································································ 3

4 ······························································· 3

4.1 ·············································································································································· 3

4.2 ·········································································································································· 3

4.3 ······················································································································ 4

4.4 ······························································································································ 4

5 ············································································································ 5

5.1 ·········································································································································· 5

5.2 ·································································································································· 5

5.3 ··············································································································································· 5

6 ································································································································· 6

6.1 ·········································································································································· 6

6.2 ·································································································································· 6

6.3 ··············································································································································· 6

7 ····················································································································································· 7

7.1 ·············································································································································· 7

7.2 ······················································································································ 7

7.3 ······································································································································ 8

······························································································································································ 9

························································································································································ 10

············································································································································· 10


Contents

1 Introduction················································································································································· 1

2 Investigation of the neutron shielding reinforcement for the concrete cells ················································· 2

3 Calculation of the cell shields capacity for neutron shields production ························································ 2

3.1 Conditions of beam sources ·················································································································· 2

3.2 Method of the calculation ····················································································································· 2

3.3 Calculation position of shields capacity ································································································ 3

3.4 Shielding calculation results ················································································································· 3

4 Calculation of shields capacity maximum handling capacity such as concrete cells······························· 3

4.1 Conditions of beam sources ·················································································································· 3

4.2 Method of the calculation ····················································································································· 3

4.3 Calculation position of shields capacity ································································································ 4

4.4 Shielding calculation results ················································································································· 4

5 Design and production of neutron shields···································································································· 5

5.1 Shielding window································································································································· 5

5.2 Shielding door ······································································································································ 5

5.3 Gamma gate·········································································································································· 5

6 Installation of shields··································································································································· 6

6.1 Shielding window································································································································· 6

6.2 Shielding door ······································································································································ 6

6.3 Gamma gate·········································································································································· 6

7 Facility inspection ······································································································································· 7

7.1 Inspection object··································································································································· 7

7.2 Acceptable standard and inspection item ······························································································ 7

7.3 Facility inspection results ····················································································································· 8

Conclusions······················································································································································· 9

Acknowledgement··········································································································································· 10

References······················································································································································· 10


JMTR Japan Materials Testing Reactor 1971

JMTR

8

4 7 5 JMTR

OSF-1

1

JMTR 23

JMTR


JMTR JMTR

110GWd/t-U

180

No.1 No.3

ICRP Pub.74 ANISN

Table 2- 1

No.1 No.3

No.1 No.3

No.4 No.8 X

Fig.3- 1 Fig.3- 2

12.3mm 400mm 110GWd/t-U

180 JMTR 0.2GWd/t-U 30

ORIGEN-2 Table 3- 1 Table 3- 2

No.1

No.2 9 No.3 2 No.4 No.8

85TBq No.1 No.4

3.7TBq X 74GBq

No.1

Table 3- 3 Table 3- 4

ANISN ANISN DLC23

22 18

Table 3- 5 Table

3- 6


1 X

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X Fig.3- 3 Fig.3- 8

2

No.1 9 No.2 4 5

7 8 1 1

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No.2 No.1

Fig.3- 9

100 Sv/h

25 Sv/h 0.5 Sv/h

Table 3- 7 Table 3- 8

No.1 No.2

100mm 60mm

28mm 70mm No.3

50mm 28mm

40mm

1MeV

5×1013 n / cm2 s 5 300

JMTR 2×1014 n / cm2 s 26 90

ORIGEN-2

Table 4- 1

ANISN ANISN DLC23


22 18

Table 3- 5

Table 3- 6

1

No.1 No.2

1100mm No.3 No.8 1000mm

Fig.3- 3 Fig.3- 6

A D F

B C E

2

Fig.3- 7

3

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No.1 1 9

No.2 4 5 7 8

No.2 4 5 7 8

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Table 4- 2


8

No.1 No.2 28mm 70mm

No.3 28mm 40mm

SUS304

3mm

Fig.5- 1 Fig.5- 3

28mm

30mm 28mm

30mm

70mm ± 8mm

80mm

No.1 No.2

100mm No.3 50mm

SUS304

Fig.5- 4 Fig.5- 6

No.1 No.2

SUS304


Fig.5- 7 Fig.5- 9

SUS304

SUS304

No.2

3

No.1 No.2

7

Fig.6- 1

No.3

Fig.6- 2

Fig.6- 3

No.1 No.2

1 1

No.1 No.2


Fig.6- 4 Fig.6- 5

No.1 JMTR No.1

No.2

21 11 12 21 031

55 2 1

21 11 30

No.1 No.3

1 7

2 3

3 2

4 2

55 2 2

2 5

1

JIS

2

3

No.1 No.3


JIS

4

0.94g/cm3

1.16g/cm3

7.2


JMTR

1

No.1 No.3

2 No.1 No.2

98mm 100mm

60mm No.3 68mm

50mm

3

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1 182 ICRP Publication 74

32007 3


Table 2- 1 JMTRTa

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Table 3- 1 UO2


Table 3- 2 MOX


Table 3- 3 UO2Ta

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Table 3- 6Ta

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Table 3- 8 MOXTa

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Table 4- 1 UO2Ta

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Table 4- 2 UO2Ta

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UO

2


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3-1


Fig.3- 2


Fig.3- 3 No.1 No.2

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Fig.3- 4 No.3

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Fig.5- 2 No.2


- 33 -

Fig.5- 3 No.3


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Fig.5- 4 No.1


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Fig.5- 7 No.1 No.2


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Fig.5- 8 No.1


- 39 -

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Fig.6- 5

国際単位系（SI）

乗数　接頭語記号乗数　接頭語記号

1024 ヨタＹ 10-1 デシ d1021 ゼタＺ 10-2 センチ c1018 エクサＥ 10-3 ミリ m1015 ペタＰ 10-6 マイクロ µ1012 テラＴ 10-9 ナノ n109 ギガＧ 10-12 ピコ p106 メガＭ 10-15 フェムト f103 キロｋ 10-18 アト a102 ヘクトｈ 10-21 ゼプト z101 デカ da 10-24 ヨクト y

表５．SI 接頭語

名称記号 SI 単位による値分 min 1 min=60s時 h 1h =60 min=3600 s日 d 1 d=24 h=86 400 s度 ° 1°=(π/180) rad分 ’ 1’=(1/60)°=(π/10800) rad秒 ” 1”=(1/60)’=(π/648000) rad

ヘクタール ha 1ha=1hm2=104m2

リットル L，l 1L=11=1dm3=103cm3=10-3m3

トン t 1t=103 kg

表６．SIに属さないが、SIと併用される単位

名称記号 SI 単位で表される数値電子ボルト eV 1eV=1.602 176 53(14)×10-19Jダルトン Da 1Da=1.660 538 86(28)×10-27kg統一原子質量単位 u 1u=1 Da天文単位 ua 1ua=1.495 978 706 91(6)×1011m

表７．SIに属さないが、SIと併用される単位で、SI単位で表される数値が実験的に得られるもの

名称記号 SI 単位で表される数値キュリー Ci 1 Ci=3.7×1010Bqレントゲン R 1 R = 2.58×10-4C/kgラド rad 1 rad=1cGy=10-2Gyレム rem 1 rem=1 cSv=10-2Svガンマ γ 1γ=1 nT=10-9Tフェルミ 1フェルミ=1 fm=10-15mメートル系カラット 1メートル系カラット = 200 mg = 2×10-4kgトル Torr 1 Torr = (101 325/760) Pa標準大気圧 atm 1 atm = 101 325 Pa

1cal=4.1858J（｢15℃｣カロリー），4.1868J（｢IT｣カロリー）4.184J（｢熱化学｣カロリー）

ミクロン µ 1 µ =1µm=10-6m

表10．SIに属さないその他の単位の例

カロリー cal

(a)SI接頭語は固有の名称と記号を持つ組立単位と組み合わせても使用できる。しかし接頭語を付した単位はもはや　コヒーレントではない。(b)ラジアンとステラジアンは数字の１に対する単位の特別な名称で、量についての情報をつたえるために使われる。　実際には、使用する時には記号rad及びsrが用いられるが、習慣として組立単位としての記号である数字の１は明　示されない。(c)測光学ではステラジアンという名称と記号srを単位の表し方の中に、そのまま維持している。(d)ヘルツは周期現象についてのみ、ベクレルは放射性核種の統計的過程についてのみ使用される。(e)セルシウス度はケルビンの特別な名称で、セルシウス温度を表すために使用される。セルシウス度とケルビンの　単位の大きさは同一である。したがって、温度差や温度間隔を表す数値はどちらの単位で表しても同じである。

(f)放射性核種の放射能（activity referred to a radionuclide）は、しばしば誤った用語で”radioactivity”と記される。(g)単位シーベルト（PV,2002,70,205）についてはCIPM勧告2（CI-2002）を参照。

（a）量濃度（amount concentration）は臨床化学の分野では物質濃度　　（substance concentration）ともよばれる。（b）これらは無次元量あるいは次元１をもつ量であるが、そのこと　　を表す単位記号である数字の１は通常は表記しない。

名称記号SI 基本単位による

表し方

秒ルカスパ度粘 Pa s m-1 kg s-1

力のモーメントニュートンメートル N m m2 kg s-2

表面張力ニュートン毎メートル N/m kg s-2角速度ラジアン毎秒 rad/s m m-1 s-1=s-1角加速度ラジアン毎秒毎秒 rad/s2 m m-1 s-2=s-2熱流密度 , 放射照度ワット毎平方メートル W/m2 kg s-3

熱容量 , エントロピージュール毎ケルビン J/K m2 kg s-2 K-1比熱容量，比エントロピージュール毎キログラム毎ケルビン J/(kg K) m2 s-2 K-1比エネルギージュール毎キログラム J/kg m2 s-2熱伝導率ワット毎メートル毎ケルビン W/(m K) m kg s-3 K-1

体積エネルギージュール毎立方メートル J/m3 m-1 kg s-2

電界の強さボルト毎メートル V/m m kg s-3 A-1電荷密度クーロン毎立方メートル C/m3 m-3 sA表面電荷クーロン毎平方メートル C/m2 m-2 sA電束密度，電気変位クーロン毎平方メートル C/m2 m-2 sA誘電率ファラド毎メートル F/m m-3 kg-1 s4 A2

透磁率ヘンリー毎メートル H/m m kg s-2 A-2

モルエネルギージュール毎モル J/mol m2 kg s-2 mol-1

モルエントロピー, モル熱容量ジュール毎モル毎ケルビン J/(mol K) m2 kg s-2 K-1 mol-1

照射線量（Ｘ線及びγ線）クーロン毎キログラム C/kg kg-1 sA吸収線量率グレイ毎秒 Gy/s m2 s-3放射強度ワット毎ステラジアン W/sr m4 m-2 kg s-3=m2 kg s-3

放射輝度ワット毎平方メートル毎ステラジアン W/(m2 sr) m2 m-2 kg s-3=kg s-3酵素活性濃度カタール毎立方メートル kat/m3 m-3 s-1 mol

表４．単位の中に固有の名称と記号を含むSI組立単位の例

組立量SI 組立単位

名称記号

面積平方メートル m2体積立法メートル m3速さ，速度メートル毎秒 m/s加速度メートル毎秒毎秒 m/s2波数毎メートル m-1密度，質量密度キログラム毎立方メートル kg/m3

面積密度キログラム毎平方メートル kg/m2

比体積立方メートル毎キログラム m3/kg電流密度アンペア毎平方メートル A/m2磁界の強さアンペア毎メートル A/m量濃度 (a) ，濃度モル毎立方メートル mol/m3質量濃度キログラム毎立法メートル kg/m3輝度カンデラ毎平方メートル cd/m2屈折率 (b) （数字の）　１ 1比透磁率 (b) （数字の）　１ 1

組立量SI 基本単位

表２．基本単位を用いて表されるSI組立単位の例

名称記号他のSI単位による

表し方SI基本単位による

表し方平面角ラジアン(ｂ) rad 1（ｂ） m/m立体角ステラジアン(ｂ) sr(c) 1（ｂ） m2/m2周波数ヘルツ（ｄ） Hz s-1

ントーュニ力 N m kg s-2圧力 , 応力パスカル Pa N/m2 m-1 kg s-2エネルギー , 仕事 , 熱量ジュール J N m m2 kg s-2仕事率，工率，放射束ワット W J/s m2 kg s-3電荷 , 電気量クーロン A sC電位差（電圧） , 起電力ボルト V W/A m2 kg s-3 A-1静電容量ファラド F C/V m-2 kg-1 s4 A2電気抵抗オーム Ω V/A m2 kg s-3 A-2コンダクタンスジーメンス S A/V m-2 kg-1 s3 A2

バーエウ束磁 Wb Vs m2 kg s-2 A-1磁束密度テスラ T Wb/m2 kg s-2 A-1インダクタンスヘンリー H Wb/A m2 kg s-2 A-2セルシウス温度セルシウス度(ｅ) ℃ K

ンメール束光 lm cd sr(c) cdスクル度照 lx lm/m2 m-2 cd

放射性核種の放射能（ｆ）ベクレル（ｄ） Bq s-1吸収線量, 比エネルギー分与,カーマ

グレイ Gy J/kg m2 s-2

線量当量, 周辺線量当量, 方向性線量当量, 個人線量当量シーベルト

（ｇ） Sv J/kg m2 s-2

酸素活性カタール kat s-1 mol

表３．固有の名称と記号で表されるSI組立単位SI 組立単位

組立量

名称記号 SI 単位で表される数値バール bar １bar=0.1MPa=100kPa=105Pa水銀柱ミリメートル mmHg 1mmHg=133.322Paオングストローム Å １Å=0.1nm=100pm=10-10m海里Ｍ１M=1852mバーン b １b=100fm2=(10-12cm)2=10-28m2

ノット kn １kn=(1852/3600)m/sネーパ NpベルＢ

デジベル dB

表８．SIに属さないが、SIと併用されるその他の単位

SI単位との数値的な関係は、　　　　対数量の定義に依存。

名称記号

長さメートル m質量キログラム kg時間秒 s電流アンペア A熱力学温度ケルビン K物質量モル mol光度カンデラ cd

基本量SI 基本単位

表１．SI 基本単位

名称記号 SI 単位で表される数値エルグ erg 1 erg=10-7 Jダイン dyn 1 dyn=10-5Nポアズ P 1 P=1 dyn s cm-2=0.1Pa sストークス St 1 St =1cm2 s-1=10-4m2 s-1

スチルブ sb 1 sb =1cd cm-2=104cd m-2

フォト ph 1 ph=1cd sr cm-2 104lxガル Gal 1 Gal =1cm s-2=10-2ms-2

マクスウｪル Mx 1 Mx = 1G cm2=10-8Wbガウス G 1 G =1Mx cm-2 =10-4Tエルステッド（ｃ） Oe 1 Oe　 (103/4π)A m-1

表９．固有の名称をもつCGS組立単位

（c）３元系のCGS単位系とSIでは直接比較できないため、等号「　　」　　は対応関係を示すものである。

（第8版，2006年改訂）

この印刷物は再生紙を使用しています