Nuclear reactor vessel support structure and construction method of nuclear reactor vessel support structure

Patent metadata

Field	Value
Publication number	US-9548140-B2
Application number	US-201113992999-A
Country	US
Kind code	B2
Filing date	Dec 6, 2011
Priority date	Dec 13, 2010
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

A nuclear reactor vessel structure includes an inner peripheral tube-shaped steel plate, an outer peripheral tube-shaped steel plate, and an intermediate tube-shaped steel plate disposed between the inner and outer peripheral tube-shaped steel plates, and is configured to support a nuclear reactor vessel on the inner peripheral side of a tube-shaped structure with concrete placed between the steel plates. The nuclear reactor vessel structure includes a support having a tube-shaped plate disposed on the inner peripheral side of the intermediate tube-shaped steel plate, and an annular plate which protrudes to the inner peripheral side of the tube-shaped plate and to which a connection section is affixed. The support is affixed to the concrete, which is placed between the inner peripheral and the intermediate tube-shaped steel plates, by first bar members, and the support is also affixed to the inner peripheral tube-shaped steel plate by second bar members.

First claim

What is claimed is:

1. A nuclear reactor vessel support structure which comprises an inner peripheral tube-shaped steel plate, an outer peripheral tube-shaped steel plate, and an intermediate tube-shaped steel plate disposed between the inner and outer peripheral tube-shaped steel plates and is configured to support a nuclear reactor vessel on the inner peripheral side of a cylindrical structure, wherein a space between the inner peripheral tube-shaped steel plate and the intermediate tube-shaped steel plate and a space between the intermediate tube-shaped steel plate and the outer peripheral tube-shaped steel plate are filled with concrete without a gap, the nuclear reactor vessel support structure comprising:
a support member which has a tube-shaped member in which at least a portion of the tube-shaped member is disposed on the inner peripheral side of the intermediate tube-shaped steel plate, and an annular plate which protrudes from the inner peripheral surface of the tube-shaped member to the nuclear reactor vessel and to which a connection part connected to the nuclear reactor vessel is affixed,
wherein the annular plate is affixed to the concrete filling the space between the inner peripheral tube-shaped steel plate and the intermediate tube-shaped steel plate by a first bar member extending in a vertical direction and the tube-shaped member is affixed to the inner peripheral tube-shaped steel plate or the intermediate tube-shaped steel plate by a second bar member extending in a radial direction of the cylindrical structure.

2. The nuclear reactor vessel support structure according to claim 1 , wherein the first bar member is a foundation bolt of which a lower end side is buried in the concrete placed between the inner peripheral tube-shaped steel plate and the intermediate tube-shaped steel plate and an upper end side is inserted into a through hole formed in the annular plate to affix the annular plate.

3. The nuclear reactor vessel support structure according to claim 1 , wherein the first bar member is a first stud which is bonded to a lower surface of the annular plate and buried in the concrete placed between the inner peripheral tube-shaped steel plate and the intermediate tube-shaped steel plate.

4. The nuclear reactor vessel support structure according to claim 1 , wherein the second bar member is an anchor bolt which has a radial outer end side inserted into the through hole formed in the intermediate tube-shaped steel plate and buried in the concrete placed between the intermediate tube-shaped steel plate and the outer peripheral tube-shaped steel plate, and a radial inner end side inserted into the through hole formed in the tube-shaped member and affixes the tube-shaped member, and
a filler is filled between the intermediate tube-shaped steel plate and the tube-shaped member.

5. The nuclear reactor vessel support structure according to claim 1 , wherein the intermediate tube-shaped steel plate is divided vertically into two portions which are a first portion and a second portion,
the first portion is disposed above the tube-shaped member and the second portion is disposed below the tube-shaped member, and a splice plate is disposed over the first portion, the second portion, and the intermediate tube-shaped steel plate, and
the second bar member is a bolt which connects the tube-shaped member with the splice plate and a bolt which joins the first portion and the second portion to the splice plate.

6. The nuclear reactor vessel support structure according to claim 5 , further comprising: a shim being disposed between the splice plate and the tube-shaped member or the intermediate tube-shaped steel plate to adjust an interval between the splice plate and the tube-shaped member or the intermediate tube-shaped steel plate.

7. The nuclear reactor vessel support structure according to claim 5 , wherein a stud member buried in the concrete placed between the inner tube-shaped steel plate and the intermediate tube-shaped steel plate is bonded to the outer peripheral surface of the tube-shaped member sandwiched by the first portion and the second portion of the intermediate tube-shaped steel plate in the vertical direction.

8. The nuclear reactor vessel support structure according to claim 1 , wherein the support member includes a first tube-shaped member affixed to the intermediate tube-shaped steel plate and a second tube-shaped member that protrudes downward from the inner peripheral side of the annular plate and is disposed on the upper portion of the inner peripheral tube-shaped steel plate, and the splice plate is disposed over the second tube-shaped member and the inner peripheral tube-shaped steel plate,
the second bar member is a bolt which connects the second tube-shaped member with the splice plate and a bolt which joins the inner peripheral tube-shaped steel plate and the splice plate, and
a filler is filled between the first tube-shaped member and the intermediate tube-shaped steel plate.

9. The nuclear reactor vessel support structure of claim 1 , wherein the support member includes a first tube-shaped member affixed to the intermediate tube-shaped steel plate and a second tube-shaped member that protrudes downward from the inner peripheral side of the annular plate and is disposed on the upper portion of the inner peripheral tube-shaped steel plate, and a splice plate is disposed over the second tube-shaped member and the inner peripheral tube-shaped steel plate,
the second bar member is a bolt which connects the tube-shaped bod with the splice plate, a bolt which joins the inner peripheral tube-shaped steel plate and the splice plate, and an anchor bolt which has the radial outer end side inserted into the through hole formed in the intermediate tube-shaped steel plate and buried in the concrete placed between the intermediate tube-shaped steel plate and the outer peripheral tube-shaped steel plate and the radial inner end side inserted into the through hole formed in the first tube-shaped member to affix the tube-shaped member.

10. The nuclear reactor vessel support structure according to claim 1 , wherein a rib protruding downward is formed on the lower surface of the annular plate.

11. A construction method of the nuclear reactor vessel support structure according to claim 1 , comprising:
a tube-shaped steel plate installing process of installing the inner peripheral tube-shaped steel plate, the outer peripheral tube-shaped steel plate, and the intermediate tube-shaped steel plate;
a first concrete pouring process of pouring a concrete in a position between the inner peripheral tube-shaped steel plate and the intermediate tube-shaped steel plate and between the outer peripheral tube-shaped steel plate and the intermediate tube-shape steel plate, to a lower height than a position at which a first bar member and a second bar member are installed;
a support installing process of installing the support member along with the first bar member and affixing the support member to the inner peripheral tube-shaped steel or the intermediate tube-shaped steel plate by the second bar member; and
a second concrete pouring process of pouring a concrete in a position at which the support member, the first bar member, and the second bar member are installed.

Assignees

• Shimizu Hiroshi
• Fujimoto Ryo
• Mori Kentaro
• Okamoto Hiromu
• Sekimoto Hisashi
• Iseki Hiroyuki
• Mitsubishi Heavy Ind Ltd

Inventors

• Shimizu Hiroshi
• Fujimoto Ryo
• Mori Kentaro
• Okamoto Hiromu
• Sekimoto Hisashi
• Iseki Hiroyuki

Classifications

• G21C13/024 Primary

  Supporting constructions for pressure vessels or containment vessels · CPC title

• F22B37/248

  with a vertical cylindrical wall · CPC title

• E04B1/16

  Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material (E04B1/32 - E04B1/36 take precedence) · CPC title

• Y02E30/40

  Cross-Sectional Technologies · mapped topic

• Y02E30/30

  Nuclear fission reactors · CPC title