tube bundle system - tecom austecomaus.com.au/wp-content/uploads/2019/07/tube-bundle-flyer.pdf ·...

$: Tube Bundle System - TECOM Austecomaus.com.au/wp-content/uploads/2019/07/Tube-Bundle-Flyer.pdf · C:\Users\Neil\Desktop\Work\Catalogue 2014\Tube Bundle Flyer.docx Tecom Australia$
TAFGAS

Tecom Australia Pty Ltd

46 Industrial Drive

Mayfield East NSW 2304

Ph.: 02 4968 0000

Email: [email protected]

Tube Bundle System

C:\Users\Neil\Desktop\Work\Catalogue 2014\Tube Bundle Flyer.docx Tecom Australia Pty Ltd

46 Industrial Drive


Phone: 02 49680 000


For a full list of services visit: www.tecomaus.com.au

General A typical Tube Bundle System consists of a Analyser shed; Suitable Pump Stand; Calibration Gas Regulator Panel and Bottle Restraints; An Analyser Panel c/w Sample System (Filtration / Sample Gas Cooler / Flow Regulation Components / etc.); Calibration Gas Switching Valves; Bag inlet and Bag outlet Sample Panel; Sample And Purge Pump Vacuum Monitoring Systems; Sample Point Select Panels (Sample Point Solenoids / Filters / Flame Traps/etc.) in 10 point Modular configurations. The System comes complete ready to use with a minimum of site time for connection. All Fittings used are Swagelok Brand fittings – these are of the highest quality available however the mine should be aware that you cannot mix parts from other brands of fittings. All Equipment is mounted using Stainless Steel Fasteners and either Nut inserts or Stud inserts. All tube work and cabling (where cable duct not viable) is secured using STAUFF Tube Clamps. The System comes fully labelled utilising Traffolyte labels.

Analyser The X-STREAM XE Enhanced Process Gas Analyser Completes the X-STREAM product line and leverages on X-STREAM modularity

X-STREAM Enhanced Process Gas Analyser

Benefits • Ease of use through web-browser interface and large display • Configuration, calibration, and programming via Ethernet • Calculator capability • Internal programmable logic controller (PLC) • Alarm management - Set alarms - Send alarm messages to your email • Data Logger and log files on internal SD card or USB device - Calibration log - Event log • New field housing with optional gas tight separation


46 Industrial Drive


Phone: 02 49680 000



Analyser Enclosure The Analyser enclosure consists of the: Analyser; Sample System including filtration, sample cooler c/w status alarm, condensate pumps; Bag-out and Maintenance control panel; Flow Control Circuit; Ventilation fan; Differential pressure and LEL gas monitor.

Sample Point Filter Panels The filter panels are built as a module, allowing configurations of 5, 10, 20 30 and 40 point sampling. This means that a system can be bought to suit a mines particular need and be easily expanded as the mine grows and more points are needed.

Filters Filters are used for particulate removal as well as for water removal.

Solenoids Solenoids used are special purpose air operated Burkett Valves selected for this application, and consultation with Burkett. The manifolds are specially designed and manufactured by Burkett in Australia, to perform correctly as required for this unusual application.

Flame traps The system is fitted with two flame arrestor manufactured for

installation into pipelines for the protection of containers and components against deflagration of flammable liquids and gases. Approved for all substances of explosion groups IIA 1 to IIA with a maximum experimental safe gap (MESG) > 0.9 mm.

Pump Stand Pump Stand supplied complete with 1 diaphragm pump installed as a sample pump and 2 diaphragm pumps installed as purge pumps, all complete with appropriate fittings. The system generally runs under a vacuum and therefore the delivery pressure of the sample pump is not critical, this vacuum is monitored on the solenoid panels.


46 Industrial Drive


Phone: 02 49680 000



Regulator Panel Designed and built by Tecom Australia for the regulation of Calibration gases into the Analyser system. Utilising Swagelok Regulators complete with inlet and outlet gauges, Braided SS hoses complete with bottle connectors to suit Coregas cylinders, tubed in Stainless Steel and tubed into the Analyser house.

Explosion Protection by

Ventilation (Ex v) Hazard

Assessment Using local artificial ventilation to effectively control the classification of the interior of packaged equipment enclosures is a tried, proven and acceptable practice, and provided for in AS 1482 section 1and AS/NZS 60079.10.1 section 5. A forced pressurisation ventilation system with fan operation monitoring and monitoring of the internal pressure used in conjunction with flammable gas monitoring of the ventilation exhaust air, allows the interior of an enclosure to be classified Non Hazardous during normal operation.

Ventilation System - Design Basis The analyser house is fitted with monitored ventilation comprising two axial fans, one that draws fresh air into the enclosure and one that exhausts, via a duct, air drawn into the analyser cabinet via a filter/damper unit mounted on one wall of the cabinet.


46 Industrial Drive


Phone: 02 49680 000



Gas Detection – The use of gas detection in maintaining a non-hazardous area and in providing protection for electrical circuits in potentially hazardous areas is provided for. Flammable-gas detectors are mounted within both the analyser compartment near exhaust ducts and on the rear wall of the vacuum pump compartment. Both are suitable for Zone 1 and installed in accordance with AS/NZS 60079.14. Both detectors are located to provide the functionality required by AS 1482, IEC 61285 and IEC 60079-16.

Protective Ventilation System Components All protective system components are IECEx certified and have types of protection consistent with EPL Gb or better hence are suitable for use in Zone 1 areas.

Analyser House Hazardous Area

Classification

Classification – Ventilation operating The analyser house is classified non-hazardous in normal operation with functional ventilation and protective monitoring. This is based on the guidance of AS/NZS 60079.10.1 Appendix B where the enclosure ‘Degree of Ventilation’ has been assessed as ‘HIGH’, ‘Availability of Ventilation’ has been assessed as ‘GOOD’ and the ‘Grade of Release’ has been assessed as ‘Secondary’. Based on the guidance provided in AS/NZS 60079.10.1 Table B1 the following classification is applied.......................................................................................................................... Non Hazardous.


46 Industrial Drive


Phone: 02 49680 000



TAFGAS Configuration

Tube Bundle Acquisition and Alarming (Tube Bundle TAFGAS) A tube bundle TAFGAS system has two main

components, a Programmable Logic

Controller (PLC) and an IBM compatible

personal computer running under MS

Windows. The PLC system controls the tube

bundle system directly.

The PLC software controls the sample tube

selection, monitors the gas analysers and

generates alarms based on concentration of

underground gasses and the status of the

monitoring equipment. In order to achieve the

greatest measure of safety, an alarm has two

aspects. Firstly, the abnormal condition must

be brought to the attention of mine personnel

in a matter which cannot be ignored or

bypassed, and secondly, once an alarm has

been acknowledged, the situation must still be

monitored to ensure that the original cause is

rectified within a reasonable time.

The PC software has the main functions of:

1. Logging all data read from the PLC; 2. Providing tools for the analysis of the data; 3. Maintaining an audit trail of events by maintaining an alarm log and a system log; and 4. Allowing controlled access to the PLC’s sample tube selection process and alarm

characteristics


46 Industrial Drive


Phone: 02 49680 000



Theory of Operation Tecom’s Automated Flammable Gas Analysis System (hereafter referred to as TAFGAS) is a process

control and monitoring system designed to check and report on potentially dangerous gas

concentrations in a mine.

Readings of the concentrations of

various gases are made periodically at

selected points throughout the mine, and

are checked against trigger SETPOINTs.

If a gas concentration exceeds the

appropriate alarm set point, then an

audible alarm is raised to alert mine

personnel to the presence of a potentially

dangerous condition. The readings of

gas concentrations are also recorded by

a computer on disk files for historical t

rends and more refined analysis.

The TAFGAS consists of a single “system” capable of

measuring FOUR gas levels (namely Carbon

Monoxide, Methane, Carbon Dioxide, and Oxygen) at

any of the moveable sample points throughout the

mine. These points are termed “STREAMs”. Plastic

tubes (collected together as “bundles”) allow air

samples to be drawn to the surface where the

TAFGAS takes readings of the gas concentrations.

The process of taking a measurement is termed

“EQUILIBRATION”.


46 Industrial Drive


Phone: 02 49680 000



The TAFGAS can equilibrate on only one stream at

a time, and selection of the stream upon which to

equilibrate is made by a Programmable Logic

Controller (hereafter termed a PLC), based upon an

entry in a SEQUENCE ORDER TABLE. The table

used has multiple entries, which can be modified by

the operator as desired. The equilibration time

(period over which a reading is made) can be varied

by the operator from a minimum of 60.0 seconds to

a maximum of 240.9 seconds.

Calibration Gas Mode Calibration Gas Mode will be an automatic

process that the PLC will initiate on a

weekly/monthly time basis, e.g. Sunday 12:00

Midnight Weekly. The purpose of this process

is to pass NATA certified gas through the

analysers and to establish their accuracy.


46 Industrial Drive


Phone: 02 49680 000



Maintenance Guide; The following Maintenance information is based on the requirements from the Australian Standard, AS 2290.3—1990 - Electrical equipment for coal mines—Maintenance and overhaul - Part 3: Maintenance of gas detecting and monitoring equipment, and from the Manufacturers Manuals. Tube Bundle Systems are classified under this Standard as Class IVb equipment. (Where it is a requirement for compliance under AS2290.3, the applicable clause number will be noted; the clause will also specify the actions required.) Records need to be retained as per the directions contained in Clause 1.9 and Table 1.1 of the Standard.

Daily Maintenance To be carried out by an “AUTHORIZED PERSON”, as defined in Clause D2 of the Standard, can also be carried out by a” ACCREDITED TEST AUTHORITY”, as defined in Clause D3 of the Standard. System status check (2.5.2.1) Visually check the system; i.e. filter condition, Analyser flows are correct, Check sample gas cooler temperature – 3degrees C +/- 0.5.

Weekly To be carried out by an “AUTHORIZED PERSON”, as defined in Clause D2 of the Standard, can also be carried out by a” ACCREDITED TEST AUTHORITY”, as defined in Clause D3 of the Standard. Carry out all Checks as detailed under daily maintenance. Carry out Calibration of analyser.

Monthly To be carried out by an “AUTHORIZED PERSON”, as defined in Clause D2 of the Standard, can also be carried out by a” ACCREDITED TEST AUTHORITY”, as defined in Clause D3 of the Standard. Carry out all daily and weekly checks. Monthly system check (2.5.2.2) Line integrity check. (2.5.2.3)

6 Monthly To be carried out by an “ACCREDITED TEST AUTHORITY”, as defined in Clause D3 of the Standard. Examination by accredited test authority. (2.5.2.4) Carry out all daily and weekly checks.

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