IP Library Granted Patent US 7,035,777
Granted Patent B2
US 7,035,777 · App. 09/813,914 · Granted Apr 25, 2006

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

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Quick Facts
Patent No.
US 7,035,777
App. No.
09/813,914
Granted
Apr 25, 2006
Kind
B2
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 pipes and three-dimensional layout data of the pipe line including the pipes 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 (12)

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 is received from a client, and simulated wall-thickness data of the piping parts obtained based on the received wall-thickness data 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 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 from change of said simulated behavior of fluid; and

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

2. A method of offering wall-thickness thinning prediction information according to claim 1 , wherein said three-dimensional layout data is data sent from the client.

3. A method of offering wall-thickness thinning prediction information according to claim 1 , wherein said piping parts composing said pipe line to be obtained said wall-thickness data thereof includes a piping part different from said piping parts shown by said wall-thickness data of said piping parts received from said client.

4. A computer readable recording medium storing a wall-thickness prediction program for predicting wall thickness of thinned pipes using a computer based on wall-thickness data of piping parts of which wall-thickness is specified, which stores programs making the computer execute:

processing to simulate change of behavior of fluid flowing inside a pipe line based on said wall-thickness data of said piping parts and three-dimensional layout data of said pipe line including said piping parts; and

processing to calculate thinned wall-thickness data of said piping parts composing said pipe line from the simulated change of behavior of fluid.

5. A method of planning a piping work plan, the method comprising the steps of:

estimating wall thickness of a pipe in a future time by simulating behavior of fluid flowing in the pipe; and

planning a plan for replacing the pipe based on the estimated wall thickness.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 20, 2007
From: HITACHI, LTD.
To: HITACHI-GE NUCLEAR ENERGY, LTD.
Reel/Frame 019881/0466 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 14, 2001
From: ARAKI, KENJI; TAKADA, MASATOSHI; HISATSUNE, MASAKAZU; AOIKE, SATORU; UTAKA, KENJI; NOUJIMA, MASAFUMI; TAKEUCHI, CHIKARA
To: HITACHI, LTD.
Reel/Frame 011802/0270 →