公开(公告)号：JPH06194473A

公开(公告)日：1994-07-15

申请号：JP619093

申请日：1993-01-18

Applicant: FRAMATOME SA ,  COGEMA ,  ZIRCOTUBE

Inventor： MARDON JEAN PAUL ,  SENEVAT JEAN

IPC: G21C3/06 ,  C22C16/00 ,  C22F1/18 ,  G21C3/07

Abstract: PURPOSE: To provide a cladding material for a fuel rod used for a nuclear reactor which is cooled and modulated by water. CONSTITUTION: A nuclear fuel rod is composed of an inner part of Zircaloy 4 and an outer part of an alloy of zirconium base, the outer layer includes 0.35%-0.65% of tin, 0.18%-0.25% of iron, 0.07%-0.13% of chrome, and 0.19%-0.23% of oxygen in weight% except the zirconium and inevitable impurities, and the total of the content of the iron, chrome, tin, and oxygen is 1.26% in weight or less. The 0.80%-1.20% of niobium and 0.10%-0.16% of oxygen in weight can be contained as an alternative or an additional means. The thickness of the outer layer is 10%-25% of the whole thickness of the cladding material. As an alternate change, the iron, chrome, and niobium till 0.5% may be substituted for vanadium of an equivalent quantity.

公开(公告)号：JPH08239740A

公开(公告)日：1996-09-17

申请号：JP34378495

申请日：1995-12-28

Applicant: FRAGEMA FRAMATOME & COGEMA ,  COGEMA ,  ZIRCOTUBE

Inventor： MARDON JEAN-PAUL ,  SEVENAT JEAN ,  CHARQUET DANIEL

IPC: G21C3/06 ,  C22C16/00 ,  C22F1/00 ,  C22F1/18 ,  G21C3/07

公开(公告)号：JPH0843581A

公开(公告)日：1996-02-16

申请号：JP2673995

申请日：1995-02-15

Applicant: ZIRCOTUBE

Inventor： JIYAN SENEBUA ,  KURISUCHIYAN RUWA ,  ERITSUKU RUKA

IPC: G01N29/04 ,  G01B17/02 ,  G01N29/07 ,  G01N29/26 ,  G01N29/27 ,  G21C3/20 ,  G21C7/00 ,  G21C17/06 ,  G21C17/07 ,  G01N29/10

Abstract: PURPOSE: To provide an ultrasonic testing method for an inner surface of a wall of a tubular coating for testing the number of surfaces of a coating and size of these surfaces in circumference direction of an inner surface of the coating and variation of thickness of the coating over one rotation particularly very accurately. CONSTITUTION: A tubular coating 1 has an essentially prism shape inner surface which has succeeding surfaces. An ultrasonic testing head 3 can discharge the ultrasonic in shape of a pulse from outside the coating 1 and the ultrasonic passes through a wall of the coating 1 and scans the wall over its whole periphery. The number of discharges of the ultrasonic pulse is adjusted as function of circumference scanning speed of the coating 1. The ultrasonic signal reflected by the inner surface of the wall of the coating 1 is recorded and the reflected signal is analyzed so as to test the number of the surfaces and size of the surface and variation of thickness of the coating over one rotation.

公开(公告)号：JPH07305153A

公开(公告)日：1995-11-21

申请号：JP29017894

申请日：1994-11-24

Applicant: FRAGEMA FRAMATOME & COGEMA ,  COGEMA ,  SEJIYU ,  ZIRCOTUBE

Inventor： JIYANNPOORU MARUDON ,  JIYAN SENEBUA ,  DANIERU SHIYAKUE

IPC: C22C16/00 ,  C22F1/00 ,  C22F1/18 ,  G21C3/06 ,  G21C3/07

公开(公告)号：JPH10249410A

公开(公告)日：1998-09-22

申请号：JP2616498

申请日：1998-02-06

Applicant: ZIRCOTUBE

Inventor： DRILLON JEAN ,  AUBIN JEAN-LUC

IPC: G21C3/326 ,  B21B15/00 ,  B21B21/00 ,  B21B25/00 ,  G21C7/20 ,  G21C21/00

Abstract: PROBLEM TO BE SOLVED: To manufacture a guide tube which is a solid product and has a reinforced part by rolling techniques in a Pilgrim or Pilger rolling mill. SOLUTION: This manufacturing method is a method for manufacturing the guide tube whose outside diameter is constant and which has the main part and reinforced part having thicker wall-thickness and also a tubular blank 22 is rolled on the material 14 of the Pilgrim rolling mill. As a 1st rolling stage, the 1st part of the blank 22 is rolled in the 1st parts 18, 19 of the mandrel 14, the mandrel 14 is moved in the axial direction of the blank 22 and, as the 2nd rolling stage, the 2nd part of the blank 22 is rolled in the 2nd parts 19, 20 of the mandrel 14.

公开(公告)号：JPH0688720A

公开(公告)日：1994-03-29

申请号：JP16495691

申请日：1991-06-10

Applicant: FRAGEMA FRAMATOME & COGEMA ,  COGEMA ,  ZIRCOTUBE

Inventor： DEIDEIEERU DESURIYUERE

IPC: G01B17/02 ,  G01N27/72 ,  G01N27/90 ,  G01N29/04 ,  G01N29/11 ,  G01N29/22 ,  G01N29/24 ,  G01N29/26

Abstract: PURPOSE: To simply, rapidly and accurately inspect the thickness and bonded state of the boundary surface of a double pipe having a tubular core coated with a plating layer or coating member composed of an alloy and composed of an alloy containing the same fundamental metals as the alloy. CONSTITUTION: The total thickness of a pipe 1 is calculated from the measured value of the transmission time of ultrasonic waves and the measured value of the thickness of a coating layer and the crack of the boundary surface of the pipe 1 is determined by the ultrasonic waves reflected by a boundary surface or the analysis of the amplitude and shape of the ultrasonic waves transmitted through a plating layer or a coating member. An apparatus consists of a means 12 having an ultrasonic transducer and guide winding and processing the signal corresponding to the current guided to the pipe 1 by a coil 10 and the signal received by a transducer and a multi-frequency AC current source 11 and simultaneously executed ultrasonic inspection and Foucault current inspection at the same time.

公开(公告)号：DE69502081D1

公开(公告)日：1998-05-20

申请号：DE69502081

申请日：1995-12-26

Applicant: FRAMATOME SA ,  COGEMA ,  ZIRCOTUBE

Inventor： MARDON JEAN-PAUL ,  SEVENAT JEAN ,  CHARQUET DANIEL

IPC: G21C3/06 ,  C22C16/00 ,  C22F1/00 ,  C22F1/18 ,  G21C3/07 ,  G21C21/02

Abstract: A process for mfg. a tube, for forming all or the external part of a nuclear fuel rod cladding or a guide tube for a nuclear fuel assembly, involves (a) producing a rod of Zr alloy contg. 50-250 ppm. Fe, 0.8-1.3 wt.% Nb, less than 1600 ppm. O, less than 200 ppm. C and less than 120 ppm. Si; (b) water quenching the rod from 1000-1200 degrees C; (c) heating to 600-800 degrees C and extruding a tube blank; (d) cold rolling to tube in at least four passes with intermediate anneals at 560-620 degrees C; and (e) subjecting to final heat treatment at 560-620 degrees C. All the heat treatments are carried out in vacuum or inert atmos. Also claimed is a cladding or guide tube for a fuel assembly of a PWR, the tube consisting of the Zr alloy described above in the fully recrystallised condition.

公开(公告)号：DE9321427U1

公开(公告)日：1998-01-08

申请号：DE9321427

申请日：1993-01-13

Applicant: FRAMATOME SA ,  COGEMA ,  ZIRCOTUBE

IPC: C22C16/00 ,  G21C3/07 ,  G21C21/00

公开(公告)号：FR2713009A1

公开(公告)日：1995-06-02

申请号：FR9314107

申请日：1993-11-25

Applicant: FRAMATOME SA ,  COGEMA ,  ZIRCOTUBE ,  CEZUS CO EUROP ZIRCONIUM

Inventor： JEAN-PAUL MARDON ,  JEAN SENEVAT ,  DANIEL CHARQUET

IPC: C22C16/00 ,  C22F1/00 ,  C22F1/18 ,  G21C3/06 ,  G21C3/07 ,  C21D1/74 ,  C21D9/08 ,  B21B23/00

Abstract: The method is intended for manufacturing nuclear fuel rod cladding tubes made of zirconium-based alloy, also containing 0.18 to 0.25 % of iron, 0.07 to 0.13 % of chromium, 0.35 to 1.70 % by weight of tin, 900 to 2300 ppm of oxygen, between 80 and 200 ppm of carbon and between 50 and 120 ppm of silicon. The weight ratio between iron and chromium in the alloy is between 1.6 and 3 and the thermal treatment includes, after rolling, a plurality of annealing processes in an inert atmosphere such that SIGMA A is greater than 1.50.10 , SIGMA A denoting the sum, for all of the annealing processes, of the product of time t (in hours) with the exponent -Q/RT, T being the temperature in K.

公开(公告)号：ES2062714T3

公开(公告)日：1994-12-16

申请号：ES91401439

申请日：1991-06-03

Applicant: FRAMATOME SA ,  COGEMA ,  ZIRCOTUBE

Inventor： DESRUELLES DIDIER

IPC: G01B17/02 ,  G01N27/72 ,  G01N27/90 ,  G01N29/04 ,  G01N29/11 ,  G01N29/22 ,  G01N29/24 ,  G01N29/26 ,  G01N29/00

Abstract: The duplex tube (1) comprises a tubular core (2) and a cladding or covering layer (3) made from an alloy, the base metal of which is identical to the base metal of the alloy constituting the tubular core (2). Ultrasonic waves at normal incidence are emitted into the thickness of the covering (3) and of the core (2) of the tube (1), the ultrasonic waves reflected by the inner and outer surfaces of the tube, by its interface (4) and by any flaws in cohesion at the interface (4) are collected, the propagation times of the ultrasonic waves in the thickness of the tube (1) are measured, the amplitude and the shape of the reflected waves is determined, the tube (1), from its outer surface, is subjected to a magnetic induction created by a multi-frequency sinusoidal current, measurements of the phase and/or amplitude of the currents induced in the tube (1) are made, the thickness of the covering layer (3) is deduced therefrom, the total thickness of the tube (1) is calculated from the measurements of the propagation times of the ultrasonic waves and of the thickness of the covering layer (3), and the cohesion of the tube at its interface (4) is determined by analyzing the amplitude and the shape of the ultrasonic waves reflected by the interface (4) or transmitted by the covering layer (3).