WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

G21Y　INDEXING SCHEME RELATING TO NUCLEAR REACTORS, POWER PLANTS AND EXPLOSIVES, TO PROTECTION AGAINST RADIATION, TO THE TREATMENT OF RADIOACTIVELY CONTAMINATED MATERIAL, TO APPLICATIONS OF RADIOACTIVE SOURCES AND TO THE UTILISATION OF COSMIC RADIATION

G21Y 2002/00 PROBLEM

G21Y 2002/10 ・Shortcomings in materials

G21Y 2002/101 ・Wear

G21Y 2002/102 ・Embrittlement

G21Y 2002/103 ・Corrosion

G21Y 2002/104 ・Inadequate performance, deformation, cracks, rupture

G21Y 2002/20 ・Operational shortcomings

G21Y 2002/201 ・Inadequate efficiency

G21Y 2002/202 ・Slowness of a process or function

G21Y 2002/203 ・Lack of manoeuvrability

G21Y 2002/204 ・Imprecision (measuring, positioning, guiding)

G21Y 2002/205 ・Lack of Automation

G21Y 2002/206 ・Insufficient reliability (durability)

G21Y 2002/207 ・Abnormal conditions

G21Y 2002/208 ・Risk of human error

G21Y 2002/30 ・Design and construction shortcomings

G21Y 2002/301 ・Heavy, bulky, cumbersome constructions, shape

G21Y 2002/302 ・Fabricating, assembling, replacing, dismantling

G21Y 2002/303 ・Risk of damage

G21Y 2002/304 ・Lack of versatility, compatibility

G21Y 2002/305 ・Inadequate transportation

G21Y 2002/306 ・Non-compliance with regulations

G21Y 2002/40 ・Maintenance shortcomings (Servicing)

G21Y 2002/401 ・Inconvenient access

G21Y 2002/402 ・Complicated assembling, disassembling, replacing, dismantling

G21Y 2002/50 ・Safety, security and safeguard shortcomings

G21Y 2002/501 ・Radiation exposure

G21Y 2002/502 ・Lack of monitoring

G21Y 2002/60 ・Disposal shortcomings

G21Y 2002/601 ・Excess of irradiated inventory

G21Y 2004/00 SOLUTION

G21Y 2004/10 ・Compositions

G21Y 2004/101 ・Inherent characteristics

G21Y 2004/20 ・Obtaining improvement by treatment

G21Y 2004/201 ・Heat treatment

G21Y 2004/202 ・Cold working

G21Y 2004/30 ・Improving a design

G21Y 2004/301 ・Joints, fixing devices

G21Y 2004/302 ・Fluid mechanics, thermodynamics

G21Y 2004/303 ・Protection cover, catching devices

G21Y 2004/304 ・Redundancy, adding material or parts

G21Y 2004/305 ・Reducing size, material or number of parts

G21Y 2004/40 ・Improving a procedure

G21Y 2004/401 ・Automation

G21Y 2004/402 ・Inherent action

G21Y 2004/403 ・Tuning, adjustment

G21Y 2004/50 ・Repair, replacement

G21Y 2004/501 ・Improving a tool

G21Y 2004/502 ・Remote operation

G21Y 2004/503 ・in factory

G21Y 2004/504 ・on site

G21Y 2004/60 ・Reusing items, recycling

G21Y 2004/601 ・Discarding, Repository