Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A flexible shielding method for highly radioactive foundation pits

A highly radioactive and radioactive technology, applied in the field of nuclear radiation, can solve the problems of personnel operation restrictions, high cost of shielding layer, and shielding of areas that cannot be radioactive, and achieve the effects of reliable process, simple operation, and reduced secondary waste generation

Active Publication Date: 2019-06-14
NUCLEAR POWER INSTITUTE OF CHINA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the cost of using lead bricks to construct the shielding layer is high, and personnel still need to be close to the operation during the construction and dismantling process; using personnel to operate in the mobile shielding body, personnel operations are limited, and the radioactive area cannot be fundamentally shielded

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A flexible shielding method for highly radioactive foundation pits
  • A flexible shielding method for highly radioactive foundation pits

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Such as figure 1 As shown, the present invention is a flexible shielding method for highly radioactive foundation pits, comprising steps:

[0024] Step 1) Make and process a matching shielding bag according to the size of the foundation pit 1 on site; the shielding bag is made by bonding the inner layer of rubber and the outer layer of canvas.

[0025] Step 2) Place a shielding bag above the radioactive objects in the foundation pit 1 that needs to be shielded; choose 6-8 mesh quartz sand as the shielding material 3, with a density of 2.6t / m 3 , bulk density 1.6t / m 3 .

[0026] Step 3) Then fill the shielding bag with shielding material 3 to form an overall shielding layer; shield the radioactive objects in the foundation pit 1 . When the radioactive dose at the central position of the pit mouth is less than 100 μSv / h, the shielding thickness of the shielding material 3 piled up shall be reached.

[0027] Step 4) After constructing the shielding body and completing ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a flexible shielding method for highly radioactive foundation pits, comprising the steps of: step 1) making and processing a matching shielding layer according to the size of the foundation pit on site; step 2) placing radioactive objects in the foundation pit to be shielded Place the shielding layer above; step 3) then fill the shielding material to form an overall shielding layer; shield the radioactive objects in the foundation pit. It successfully solves the problems of high exposure dose, long time consumption, and high material cost in the construction of temporary shields in high-radioactive places. The method of the present invention is feasible, reliable in process, safe and efficient, simple in operation, cost-saving, and reduces the amount of secondary waste generated. It ensures that the radioactive radiation level in the operating area of ​​the staff reaches an acceptable value, so that the construction work in this area can be successfully completed.

Description

technical field [0001] The invention relates to the field of nuclear radiation, in particular to a flexible shielding method for highly radioactive foundation pits. Background technique [0002] Among the many nuclear facilities in our country, there are a large number of maintenance work and facilities, equipment, and workshops that need to be decommissioned. During the operation, personnel need to enter the facility for close-range operation. Some factories have high radioactive doses and need temporary shielding, while traditional shielding methods generally use lead bricks to build the shielding layer or personnel enter the mobile shielding body for operation. The cost of using lead bricks to construct the shielding layer is high, and personnel still need to be close to the operation during the construction and dismantling process; using personnel to operate in the mobile shielding body, personnel operations are limited, and the radioactive area cannot be fundamentally s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G21F3/00G21F1/02E02D17/02
CPCE02D17/02G21F1/02G21F3/00
Inventor 徐江张劲松李文钰李振臣毛常磊童刚刘懋袤张永康王帅王建强余兴平马志鹏赵俊徐强
Owner NUCLEAR POWER INSTITUTE OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com