JPS58160792A - Condenser - Google Patents

Abstract

PURPOSE:To shorten the work period needed for the construction of a scaffold for the inspection and examination of a bleeding pipe, a feed water heater, etc., and to lower the exposure amount, by constructing support members to be provided in a condenser of nuclear facilities in such a way that the support members cab also be used as a scaffold. CONSTITUTION:A plurality of supporting pipes 2 as the support members are welded to an upper drum 1 of the condenser, a heater 3 is installed in the lower part through supporting members 5, and a piping 4 is united to the heater 3. A plurality of the supporting pipes 2 are constructed in a form of a latticework when viewed from the top, and are also arranged one above another so that a scaffold conforming to the size stipulated in JIS is constructed. Therefore in case when periodic inspection is performed, examination or the like is carried out with respect to the bleeding pipe, the feed water heater, etc., the work for the construction of a scaffold can be omitted or simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a condenser, and particularly to a condenser suitable for new installation in nuclear power facilities.

In the condenser in conventional nuclear power facilities, as shown in Figure 1, the upper body IK inside the turbine condenser is welded with a plurality of boat members 2 in consideration of vacuum strength, and the heater 3
．． The pipe 4 and the heater support member 5 are incorporated into the structure.

In such conventional condensers, when performing periodic inspections and inspections of bleed pipes, feed water heaters, etc., scaffolding materials (usually
Scaffolding was constructed by assembling multiple layers of Alken pipes, and the work was carried out using this scaffolding.

However, with this conventional method of constructing scaffolding, work time inside the condenser becomes longer due to improper installation of scaffolding materials and the addition of support members, leading to unnecessary radiation exposure. The drawback was that there was a risk of it being lost.

In addition, the size of the manhole will be the standard for bringing equipment into the condenser, and there will be restrictions on the dimensions of scaffolding materials, which will lengthen the construction period even further.

SUMMARY OF THE INVENTION An object of the present invention is to provide a condenser that can eliminate the drawbacks of the prior art and shorten the construction period for scaffolding inside the condenser.

In order to achieve the above-mentioned object, the present invention is constructed so that a support member provided inside the condenser can be used as a scaffold in advance.

The present invention will be described in detail below with reference to the drawings.

2 and 3 show an embodiment of the present invention, in which a large number of support pipes 2 as support members are welded to the upper body 1 of the condenser, and A heater 3 is installed via a support member 5, and a pipe 4 is connected to the heater 3. As shown in FIG. 3, the multiple support pipes 2 are arranged in a lattice shape when viewed from above, and are assembled in multiple stages as shown in FIG. is building.

According to this embodiment, since the scaffold of JIS standard size is built inside the condenser in advance, periodic inspections of the air bleed pipe, feed water heater, etc. are carried out.

When carrying out investigations, etc., scaffolding construction work can be omitted or simplified, the construction period can be shortened, and inspections, #I4 inspections, etc. [can be carried out immediately, and the condenser Not only can the outage period be shortened, but also the amount of radiation exposure can be reduced.

In addition, although the said Example demonstrated the case where the scaffold of the standard size of JI8 standard was constructed, it is not limited to this, and the scaffold construction period may be shortened sufficiently. Also,
It can be applied not only to condensers for nuclear power facilities, but also to condensers for thermal power facilities.

As described above, according to the present invention, the condenser stop period can be shortened.

[Brief explanation of drawings]

FIG. 1 is a front view showing a conventional example, FIG. 2 is a front view showing an embodiment of the present invention, and FIG. 3 is a plan view of main parts. 1... Condenser upper body, 2... Support pipe, 3
...”7 years ago, 81 countries, 2 mouths

Claims (1)

[Claims] 1. In a condenser in which a plurality of support members are incorporated into the upper fuselage, the support members are constructed in the shape of a scaffold.
% mold condenser.