PATENT CLAIM ANALYSIS

Application Number: 16330078
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["376", "313000"]

Abstract:
Controlled-debris elements inhibit the formation of a fibrous/particulate debris bed that unduly increases the pressure head loss through the perforated plates of strainers in a nuclear power plant emergency core cooling system. In a loss of cooling accident, pumps draw cooling water through the plates, which retain on their surfaces fibrous material in the circulating water to prevent it from reaching the pumps while permitting entrained particulate matter to pass through the perforations. The controlled-debris elements have a specific gravity substantially the same as the circulating water so they are entrained in the cooling water that is drawn toward the strainers and intimately intermix with the fibrous and particulate matter in the cooling water. The elements are configured to provide open structures in the bed formed on the plate surfaces to distribute fibers in the flow away from the surface and maintain cavities between the elements for the particulates.

Claim (Index 11):
An emergency core cooling system in a nuclear power plant for circulating cooling water during a time period beginning near the onset of a power plant loss of cooling accident (LOCA), the cooling system comprising:\n a strainer immersed in the cooling water during the loss of cooling accident and having a surface for retaining debris in the circulating water and perforations through the surface for permitting the circulating water to pass through the strainer; a pump for drawing the cooling water through the perforations, the pump being disposed on a suction side of the strainer surface to provide a pressure drop relative to a pressure side of the strainer surface opposite the suction side; and a plurality of controlled-debris elements disposed in the emergency core cooling system for entrainment into the cooling water on the pressure side of the surface, wherein: each element has a specific gravity substantially the same as the circulating water during at least a portion of time following the LOCA onset for entraining the element in the flow of water in the reservoir toward the strainer and depositing on the strainer surface a debris/element layer comprising a plurality of the elements and the debris; and the elements are configured to form open spaces between adjacent elements in the debris/element layer.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 99.0
- Lexical Diversity: 1.74157
- Patent Class: 376.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['11596097', '12465253', '12568327', '14031185', '13396396']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6749261117842648
- 35 USC 102 Novelty (BERT): 0.5393933343047727
- Combined Prediction Score: 0.6613728340363156
- Mean Citation Score: 323.572048
- Max Citation Score: 392.59662
- Similarity Product: 297.02859600404975

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test