Method of offering wall-thickness thinning prediction information, and computer-readable recording medium storing wall-thickness thinning prediction program, and method of planning piping work plan

• US 7,398,193 B2
• Filed: 06/13/2006
• Issued: 07/08/2008
• Est. Priority Date: 03/31/2000
• Status: Expired due to Fees

• Current Assignee: Hitachi-Ge Nuclear Energy Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi-Ge Nuclear Energy Limited (Hitachi, Ltd.)
• Inventors: Aoike, Satoru, Utaka, Kenji, Hisatsune, Masakazu, Araki, Kenji, Takada, Masatoshi, Takeuchi, Chikara, Noujima, Masafumi
• Primary Examiner(s): FREJD, RUSSELL WARREN
• Application Number:
  US11/451,376
• Publication Number:
  US 20060229855A1
• Time in Patent Office: 756 Days
• Field of Search: 703/2, 703/9, 703/22, 376/249, 73/86, 735/92
• US Class Current: 703/9
• CPC Class Codes: G01N 17/00 Investigating resistance of materials to the weather, to corrosion, or to light
• CPC Class Codes: G01N 17/006 of metals
• CPC Class Codes: G06F 2111/10 Numerical modelling
• CPC Class Codes: G06F 2113/14 Pipes
• CPC Class Codes: G06F 30/13 Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30
• CPC Class Codes: G21C 17/017 Inspection or maintenance of pipe-lines or tubes in nuclear installations
• CPC Class Codes: Y02E 30/30 Nuclear fission reactors

Abstract

A wall-thickness thinning rate at a not-measured position is estimated using information having a small number of measured points. Simulation of behavior of fluid flowing inside a pipe line is performed based on wall-thickness data of pips and three-dimensional layout data of the pipe line including the pips using a computer, and simulated wall-thickness thinned data of the pipes composing the pipe line is calculated from change of the simulated behavior of fluid.

Claims

1. A method of offering wall-thickness thinning prediction information in which wall-thickness data of piping parts for specifying wall-thickness values of the piping parts which may or may not be received from a client, and simulated wall-thickness data of the piping parts obtained based on the received wall-thickness data, if existent, is offered to the client, the method comprising the steps of:

simulating behavior of fluid flowing inside a pipe line based on said received wall-thickness data, if existent, of said piping parts and three-dimensional layout data of said pipe line including said piping parts using a computer;

calculating simulated wall-thickness data of said piping parts composing said pipe line in accordance with a change of said simulated behavior of fluid; and

when said wall-thickness data of said piping parts and three-dimensional layout data of said pipe line including said piping parts is non-existent, calculating a prediction of a wall-thickness of said piping parts in accordance with a simulated data of said piping parts; and

sending a simulated thinned wall-thickness data to the client.