Spellman LORAD LPX-200 Manuale utente

LPX200

118176-001 REV. A

This information contained in this publication is derived in part from proprietary and patent data. This information has

been prepared for the express purpose of assisting operating and maintenance personnel in the efficient use of the

model described herein, and publication of this information does not convey any right to reproduce it or to use it for

any purpose other than in connection with installation, operation, and maintenance of the equipment described.

CAUTION: THIS EQUIPMENT PRODUCES

X-RAYS WHEN ENERGIZED!

DO NOT OPERATE THIS EQUIPMENT WITHOUT

FORMAL HARDWARE RAINING FROM

SPELLMAN HIGH VOLTAGE ELECTRONICS.

ASNT LEVEL 3 RADIOGRAPHIC CERTIFICATION

IS HIGHLY RECOMMENDED.

WWW.SPELLMANHV.COM

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LPX-200

Industrial Ima

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This document is copyrighted by LORAD.

No part of this document may be reproduced, transmitted,

or copied without the express written permission of:

LPX-200 Industrial Imaging System

Operator’s Manual

Part Number 9-500-0200, Revision 2

Spellman Valhalla 1 Commerce Park Valhalla, NY 10595

Phone: +1 914 686-3600 Fax: +1 914 686-5424

www.spellmanhv.com

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Contents

Chapter INTRODUCTION & GENERAL INFORMATION

INTRODUCTION ..................................................................1-1

Intended Use.........................................................................1-1

SYSTEM OVERVIEW ..........................................................1-1

The Control Unit...................................................................1-2

The Tubehead .......................................................................1-2

The Cooling Unit

(liquid-cooled units only) .....................................................1-2

Legend - LPX-200 X-ray System ..........................................1-3

MANUAL OUTLINE .............................................................1-4

Chapter 1:

Introduction & General Information....................................1-4

Chapter 2:

Preparation For Use and Shipment......................................1-4

Chapter 3:

Installing the LPX-200 .........................................................1-4

Chapter 4:

LPX-200 X-ray Controls & Indicators .................................1-4

Chapter 5:

LPX-200 X-ray System Operation ........................................1-4

Section 6:

Routine Upkeep and Care ....................................................1-4

SAFETY SUMMARY ............................................................1-5

Radiation Hazard .................................................................1-6

Lethal Voltages .....................................................................1-6

Badges ..................................................................................1-6

Radiation Protection ............................................................1-6

Radiation Monitoring...........................................................1-6

Warm-Up Procedures ...........................................................1-6

Operation .............................................................................1-6

Cooling Unit Operation .......................................................1-6

Care in Handling..................................................................1-6

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UNPACKING INSTRUCTIONS...........................................2-1

Reshipment Guidelines .........................................................2-1

Transporting the Unit ...........................................................2-2

EQUIPMENT CHECKLISTS...............................................2-3

Checklist - Tubehead ............................................................2-3

Checklist - Standard Equipment ...........................................2-3

Checklist - Optional Equipment ...........................................2-3

WARNINGS LABELS &

CONTROL NUMBERS .........................................................2-4

SPECIFICATIONS.................................................................2-5

Specifications - General System ...........................................2-5

Specifications - General Tubehead.......................................2-6

Specifications - Optional Tubehead .....................................2-6

Specifications - Control Unit................................................2-7

Specifications - Cooling Unit ...............................................2-7

Chapter

PREPARATION FOR USE & SHIPMENT

INSTALLING THE LPX-200 X-RAY SYSTEM

PRE-OPERATIONAL

CHECKS & INSPECTION ...................................................3-1

Check - Tubehead Gas Pressure...........................................3-1

Check - Cooling Unit............................................................3-1

Check - Control Unit ............................................................3-1

SYSTEM SET UP PROCEDURES.......................................3-2

System Interconnections - Liquid Cooled.............................3-2

System Interconnections - Air Cooled ..................................3-3

Connecting to Power ............................................................3-4

EXTERNAL

INTERLOCK CONNECTIONS ...........................................3-4

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INTRODUCTION ..................................................................4-1

Overview - Control Unit .......................................................4-1

Legend - LPX-200 Control Unit ...........................................4-1

THE LIQUID

CRYSTAL DISPLAY SCREENS ..........................................4-2

The Message / Mode LCD Display Screen ...........................4-3

FRONT PANEL

CONTROLSAND INDICATORS ........................................4-4

The MAINS Switch................................................................4-4

The MAINS ON Indicator.....................................................4-4

The SAFETY Switch..............................................................4-4

The kV SET Controls ............................................................4-4

The mA SET Controls ...........................................................4-4

The EXPOSURE SET Controls ............................................4-5

The UNITS Control...............................................................4-5

The TIME Control ................................................................4-5

The RESET Control ..............................................................4-5

The SCROLL Control ...........................................................4-6

The X-RAY ON Control ........................................................4-6

The X-RAY Indicator ............................................................4-6

The X-RAY OFF Control ......................................................4-6

Chapter

LPX-200 X-RAY CONTROLS & INDICATORS

LPX-200 SYSTEM OPERATION

INTRODUCTION ..................................................................5-1

Pre-Operational Safety Precautions ....................................5-1

X-RAY TUBE WARM UP......................................................5-2

Autowarm Sequence : > 30 Days.........................................5-2

Autowarm Sequence : 7 - 30 Days .......................................5-3

Autowarm Sequence : 16 Hrs. - 7 Days ...............................5-3

Autowarm Sequence : 8 Hrs. - 16 Hrs..................................5-4

Autowarm Sequence : 4 Hrs. - 8 Hrs....................................5-4

OPERATION -

LPX-200 X-RAY SYSTEM ....................................................5-5

Sequence of Operation .........................................................5-5

LPX-200 FAULT MESSAGES...............................................5-7

X-RAY TUBE SEASONING .................................................5-8

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Chapter

LPX-200 ROUTINE UPKEEP & CARE

INTRODUCTION ..................................................................6-1

INSPECTION CHECKLISTS ..............................................6-1

Tubehead Checklist ..............................................................6-1

Control Unit Checklist..........................................................6-2

Cooling Unit Checklist .........................................................6-2

Interconnecting Cables & Hose Checklist ...........................6-2

CLEANING THE

LPX-200 X-RAY UNIT ..........................................................6-3

Required Cleaning Materials ...............................................6-3

Cleaning the X-Ray Unit ......................................................6-3

TUBEHEADMAINTENANCE ............................................6-4

Temperature Compensation..................................................6-4

Re-Pressurizing the Tubehead .............................................. 6-5

Re-Filling the Tubehead .......................................................6-6

Cleaning - Control Unit Air Filter........................................6-6

COOLING UNIT UPKEEP...................................................6-7

Mixing & Adding Coolant Solution......................................6-7

Cleaning - Cooling Unit Air Filter .......................................6-7

Cleaning - Coolant Filter .....................................................6-8

1-1

Chapter 1:Introduction & General Information

LPX-200

Industrial Ima

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Chapter 1:

Introduction and General Information

INTRODUCTION

This manual describes the LORAD LPX-200 Portable

Industrial X-ray Unit and explains the procedures to properly

set up, inspect, operate, and maintain this system.

Intended Use

The LPX-200 is designed to meet the needs of the commercial

NDT user. The system is intended for, but not limited to, the

inspection of materials for:

◆defects

◆inclusions

◆cracks

◆corrosion

◆porosity

SYSTEM OVERVIEW

The LPX-200 can generate x-ray potential up to 200 kilovolts

(kV) and tube current up to 10 milliamperes (mA). The

maximum allowable dissipation is 900 watts. Maximum tube

current is limited automatically by the Control Unit to 10mA,

or to a value that does not cause dissipation greater than 900

watts at a set kV level.

The system offers a 100% duty cycle and consists of the

following assemblies:

◆the Control Unit

◆the Tube Head

◆the Cooling Unit, (liquid cooled units only)

◆the Electric Cooling Fan (air cooled units only)

These assemblies are described in detail next.

Figure 1-1:

The LPX-200 X-ray System

1-2

Chapter 1:Introduction & General Information

LPX-200

Industrial Ima

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The Control Unit

The radiographer uses the Control Unit to set the radiographic

exposure parameters, and to activate/deactivate x-ray

emissions from the Tubehead. One hundred feet of cable is

supplied with the system, which enables the Control Unit an

operator to maintain a safe distance from the x-ray Tubehead

during use.

The digital-based, microprocessor-regulated Control Unit

houses all the system pushbutton operating controls, an

exposure factor LCD Screen (for display of exposure factors),

a Message LCD Screen (for display of operating mode and

system messages), and the circuitry required to provide power

to the Tubehead and Cooling Unit.

The Control Unit is enclosed in a metal container with a

removable cover. A collapsible handle is attached to the cover

to provide a means of transporting the Control Unit.

TheTubehead

The Tubehead is a cylindrical aluminum shell assembly

housing the x-ray tube, the high voltage power supply, and the

filament supply. It is insulated with sulfur hexafluoride gas,

pressurized to 50 psi @70°F. Power to operate the x-ray tube

is supplied through a shielded cable that connects the

Tubehead to the Control Unit. The x-ray tube is end

grounded, with an exposed anode which contains a beryllium

window approximately 2 inches from the anode end. Built in

carrying handles are at each end of the Tubehead.

There are two Tubehead models available:

◆Liquid-cooled

◆Air-cooled

The liquid-cooled Tubehead uses a separate Cooling Unit to

dissipate anode heat. These models have a length of twin hose

attaching the Tubehead to the Cooling Unit. Air-cooled

models have an electric cooling fan mounted at the anode end

of the Tubehead. The fan is powered by an interconnecting

cable from the Control Unit.

The Cooling Unit

(liquid-cooled units only)

The Cooling Unit dissipates heat generated at the anode of the

x-ray tube. Liquid coolant from a self-contained reservoir is

pumped through one side of a twin hose assembly, into the

Tubehead. In the Tubehead, coolant flows through a cooling

manifold, into the anode, and then back to the Cooling Unit

through the second half of the twin hose assembly.

Once in the Cooling Unit, coolant passes through a flow

switch that is electrically interlocked with the Control Unit,

and then through a filter to screen out contaminants. From the

filter, coolant flows through a forced air radiator, where

conducted heat is dissipated, and then back into the reservoir.

An electric motor-driven fan and pump assembly circulates

coolant and creates airflow through the radiator. Power is

supplied via an interconnecting cable from the Control Unit.

When properly connected to the system, the Cooling Unit is

automatically activated by a switching circuit within the

Control Unit.

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