JPH022698U - - Google Patents
Info
- Publication number
- JPH022698U JPH022698U JP1988078905U JP7890588U JPH022698U JP H022698 U JPH022698 U JP H022698U JP 1988078905 U JP1988078905 U JP 1988078905U JP 7890588 U JP7890588 U JP 7890588U JP H022698 U JPH022698 U JP H022698U
- Authority
- JP
- Japan
- Prior art keywords
- access hole
- hole cover
- pressure vessel
- reactor pressure
- support plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Description
第１図は本考案の一実施例に係るアクセスホー
ルカバーの平面図、第２図は第１図に示したアク
セスホールカバーの縦断面図、第３図は本考案の
他の実施例に係るアクセスホールカバーの平面図
、第４図は第３図に示したアクセスホールカバー
の縦断面図、第５図は原子炉圧力容器の従来例を
示す縦断面図、第６図は第５図に示したシユラウ
ドサポートプレートの平面図、第７図は第５図に
示した原子炉圧力容器の下部構造を示す縦断面図
、第８図は第７図のＡ部拡大図である。
１……原子炉圧力容器、２……シユラウド、９
……シユラウドサポートプレート、１５……アク
セスホール、２０，２５……アクセスホールカバ
ー、２１……スタツドボルト、２２……溝、２３
……金属Ｏリング、２４……植込みボルト。
FIG. 1 is a plan view of an access hole cover according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the access hole cover shown in FIG. 1, and FIG. 3 is a plan view of an access hole cover according to another embodiment of the present invention. FIG. 4 is a plan view of the access hole cover, FIG. 4 is a vertical sectional view of the access hole cover shown in FIG. 3, FIG. 5 is a vertical sectional view showing a conventional example of a reactor pressure vessel, and FIG. 7 is a vertical sectional view showing the lower structure of the reactor pressure vessel shown in FIG. 5, and FIG. 8 is an enlarged view of section A in FIG. 7. 1...Reactor pressure vessel, 2...Shroud, 9
... Shroud support plate, 15 ... Access hole, 20, 25 ... Access hole cover, 21 ... Stud bolt, 22 ... Groove, 23
...Metal O-ring, 24...Studded bolt.
Claims (1)
持するシユラウドサポートプレートに複数個穿設
され、作業時に作業員が原子炉圧力容器の下部に
入る通路となるアクセスホールを閉塞するアクセ
スホールカバーにおいて、このアクセスホールカ
バーの本体に水密可能なシール構造が形成され、
アクセスホールカバーと前記シユラウドサポート
プレートは結合部材によつて固定されて成ること
を特徴とするアクセスホールカバー。 In the access hole cover, which is provided in a plurality of holes in a shroud support plate that supports the shroud housed in the reactor pressure vessel, and which closes access holes that serve as passages for workers to enter the lower part of the reactor pressure vessel during work, A watertight seal structure is formed on the main body of this access hole cover,
An access hole cover characterized in that the access hole cover and the shroud support plate are fixed by a coupling member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988078905U JPH022698U (en) | 1988-06-16 | 1988-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988078905U JPH022698U (en) | 1988-06-16 | 1988-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH022698U true JPH022698U (en) | 1990-01-09 |
Family
ID=31303796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988078905U Pending JPH022698U (en) | 1988-06-16 | 1988-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH022698U (en) |
-
1988
- 1988-06-16 JP JP1988078905U patent/JPH022698U/ja active Pending