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Areas of Activities
Top Products
Products & Services
INSPECTION OF REACTOR PRESSURE VESSEL
INTRODUCTION
• INETEC provides high quality, competitively priced nondestructive testing products and inspection services
• INETEC has entered world industry with the extensive Reactor Pressure Vessel Inservice Inspection (RPV-ISI) experience gained through inspections of Reactor Pressure Vessel
(RPV) in the PWR or VVER nuclear power plants (NPP)
• INETEC RPV-ISI examination system is capable of performing remote under water ultrasonic testing using contact technique, eddy current testing, visual testing, local grinding action as well as taking of boat samples.
OBJECTIVES OF RPV-ISI
• To reduce on-vessel time
• To minimize usage of polar crane
• To assemble tool in a few hours
• To perform reliable inspections
• To perform contact ultrasonic, eddy current and visual inspection according to applicable standard(s) (ASME, PK-1514/72 ...)
o RPV Shell circumferential and longitudinal welds
o Lower head welds
o Inlet and Outlet nozzle-to-shell welds and inner radius areas
o Inlet and Outlet nozzle-to-safe end welds and safe end-to-pipe welds
o Ligaments between the thread flange holes
o RPV supports
o Interior surfaces
• To reach Customer satisfaction
RPV-ISI EQUIPMENT DESCRIPTION
The INETEC RPV-ISI equipment consists of two main subsystems:
• RPV-ISI Tool
o RPV-ISI Tool
o Tool Control System (TCS)
o CRISI Workstation
o Remote Audio/Video Console
• Non-Destructive Examination (NDE) systems
o Ultrasonic Examination System
o Eddy Currant Examination System
o Visual Examination System
RPV-ISI Tool
• TOOL MAINFREME
o Tool carriage
• TOOL END EFFECTORS
o UNI End Effector
• Shell Areas
• Nozzle Areas
• Inner Radii Areas
o Tangential End Effector
o Lower Head End Effector
• REMOTE DOCKING SYSTEM
• PNEUMATIC SYSTEM
• A/V SYSTEM
• UT SYSTEM
• ET SYSTEM
Tool Carriage
• 8 DOF
• Approved design
• SS & Aluminum
• Up to 150 mm/sec
• Harmonic Drives & Resolvers for precise positioning
• Simultaneously scanning with two UNI End Effectors
• Sec. Cal. On the Carriage
• VT on the Carriage
UNI End Effector
• Three end effectors in one
• Scanning o All Shell welds
o All Nozzle welds
o All Inner Radii areas
• Separate actuator
• Simultaneously scanning with two UNI EE
• Minimized usage of the polar crane
• Reduced on vessel time
• Optimized transducer sleds to maximize scanning volume
Audio/Video System
-
VT system
o High resolution pan&tilt camera (>350 TV lines)
o Control console (in containment)
o Remote control console (outside containment);
o Monitors (capable of presenting up to 4 different video signals at once or one by one video of up to four sources, or custom defined video source)
o Under-water lights
o Exact camera coordinates (displayed on monitor and recorded on VCR)
o S-VHS VCR’s
o Mini Submarine - Audio Console
o Communication system
o Portable earphones - Emergency Stop System
o Outside containment
UT System Description
ULTRASONIC SYSTEM MAIN COMPONENTS
o Tomoscan III
• The world’s most advanced ultrasonic instrument
• Provides a variety of applications in ultrasonic examination field
• For conventional application
• For phased array application
o PC Workstation
• Software for data acquisition/analysis
• Fiber optic connection
• Optical media/CD data storage device
o UT Probes
• Conventional UT probes (single, dual focused probes)
• Phased Array Probes
• Special purpose probes
Tomoscan III Description
• The most widely used Phased Array system in the world
• Include connections for up to 128 conventional UT probes and up to 4 PA probes of 32 elements
• TomoView software for data acquisition and data analysis
• TomoView supports acquisition of Phased Array probes and standard UT channels
• Multiple probe capability
• PA system with electronic scanning, beam steering and dynamic focusing
• Real time averaging
• A/D converter with 12 bits
• Real-time data compression (12 to 8 bits)
• Real time presentations: A, B, C and D-Scan uncorrected or corrected for an angle, Sectorial-Scan, Multi-channels, TOFD
• Housing equipped with vortex cooler to prevent contamination
ET System Description
• ET system is used for RPV clad material examination
• ZETEC MIZ-30 ET instrument
• ET Probe characteristics
o Signal forming like +P type of probes
o Driver/pickup mode, shielded
o Optimized frequency with regard to depth of penetration and flaw signals resolution
o Designed to minimize permeability variations
• Test Parameters
o Frequency range 10kHz up to 150kHz
o Scan speed 50 - 100 mm/s
o One data sample taken each 0.4 mm
• Indication Detection and Characterization:
o Surface and subsurface flaws
o Ligament or surface flaw depth measurement
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