ohem – operating instructions for dräger pac 7000 and 8000

Work Instruction Document No. 59831

Document Title OHEM – Operating Instructions for Dräger PAC 7000 and 8000

Function HSE Issue Date 3 February 2021

Department Health Version Number 10

Approver J Owen – Manager Safety Environment Radiation & Hygiene

This document supports: OD Document No. 46938 IMS Element 7 – OHEM: Gas Monitoring Procedure

Olympic Dam Document No. 59831 V. 10 of 9

Uncontrolled when printed

1 PURPOSE

The purpose of this document is to provide information on how to use the Drager PAC 7000 and PAC 8000 Monitor to monitor for single gases. PAC8000 is a replacement product of PAC7000, it provides a faster sensor response time and longer lasting batteries than PAC7000.

2 SCOPE

This document is aimed at all personnel who are required to use a Drager PAC 7000/8000 Monitor.

Personnel conducting measurements shall undertake the LMS online training – OD: Drager Personal Monitor Awareness and then complete the ‘OD: Drager Personal Monitoring Competency’ assessment prior to use of the monitor.

3 HAZARD AND CONTROL MEASURES FOR SAFETY AND ENVIRONMENT

All procedures, warning signs and regulations that apply to the underground mine area and process area shall be obeyed. Make sure you have familiarised yourself with all requirements needed to enter areas for monitoring.

Ensure monitor is within calibration date and personnel are trained in use of monitor.

4 RELATED DOCUMENTS AND FORMS

Olympic Dam Document No. Title

Olympic Dam Document No. 2827

Confined Space Management


IMS Element 7 – Occupational Hygiene Exposure Management Procedure


IMS Element 7 – OHEM: Gas Monitoring Procedure


OHEM – Monitoring Log Sheet – Airborne Contaminants & Gases

OHEM – Operating Instructions for Dräger PAC 7000 and 8000 Olympic Dam



5 DRAGER PAC 7000/8000 MONITOR

PAC 7000 Overview

PAC 8000 Overview

5.1 Care of the Drager PAC 8000The PAC 7000/8000 is an EXTREMELY SENSITIVE INSTRUMENT

DO NOT DROP IT.

DO NOT ALLOW IT TO GET WET.

Do not allow the pumping end to be submerged or inserted into excessively dusty or dirty conditions. Ensure in-line dust and water-stop filters are present.




The PAC 7000 is designed for continuous operation between -20 to +50 °C. The PAC 8000 is designed for continuous operation between -30 to +55 °C. Rapid or drastic changes in temperature may cause fluctuations of the sensors.

The instrument should be WORN with the sensor exposed to the air, for example on collar of the clothing. The sensor is behind the grill above the display. The sensor should be kept clean. If this is contaminated by any slurry, liquid etc. it should be taken to the docking station for replacement. The instrument will not be functioning properly if the sensor is dirty. If the unit is out of service, please contact site Metallurgical Laboratory for more information.

The PAC 7000/8000 must be bump tested every 24 hours or between jobs. The simplest way to ensure this is to insert it into the docking station which will automatically ensure it is tested.

The PAC 7000/8000 must be CALIBRATED by an instrument officer or qualified, trained personnel every 6 months as long as bump testing is adhered to. On start up the PAC 7000/8000 will display when it is next due. It is your responsibility as the user of this instrument to ensure it is returned and calibrated when due. The instrument will not function properly if it has not been calibrated. ENSURE Drager PAC 7000/8000 HAS BEEN BUMP TESTED PRIOR TO ISSUE




5.2 Operation of the Drager PAC 7000 and PAC 8000Always turn the instrument on in a “clean” environment.

Refers to Drager PAC7000/8000 operation training video: Dräger Pac® 6000 / 6500 / 8000 / 8500 - Operation - YouTube

Step / Task Photo / Explanation / Comment

Select the appropriate gas monitor depending on the gas being tested for and check the Drager calibration sticker located on the rear of the monitor is in date

Turn the monitor on by holding the “OK” key for 3 seconds or until the countdown on the display is complete

Allow the monitor to complete the start-up routine.

During start up the display will show

The start-up screen with all the elements The current software version Gas measured A1 and A2 alarm settings (arrows with rising or

declining gas concentration) Days remaining until the next calibration is due

The units audible and visual alarms will activate for a short time

https://www.youtube.com/watch?v=2ZS_21-dlIg&feature=youtu.be

https://www.youtube.com/watch?v=2ZS_21-dlIg&feature=youtu.be





Once the unit has completed its start-up it will display the measured quantity of gas and battery level.

Note - The PAC7000/8000 is set to alarm if it has not been bump tested within a 24hr period. All units must be returned, recharged and bump tested before placing back into service.

To cycle through the information settings press the ok button

Press the “OK” button to cycle through the info settings.

Peak concentration

TWA concentration

STEL concentration

Number of alarmsNote – Every time turns on the monitor, the previous monitoring data will be erase from the monitor with set alarm levels remain. Historical data can be access via Drager software “X-dock Manager” in conjunction with “Gas Vision”. Contact site Radiation and Occupational Hygiene team if requires to access the historical monitoring data.

Turning the monitor off by pressing both the “OK” and the blue buttons simultaneously

Press and hold both the “OK” and blue buttons for 3 seconds or until the countdown on the display is complete. Ensure that the PAC 7000/8000 is returned to the charging dock or hanged on wall.




6 BUMP TESTING DRAGER PAC 7000/8000

Ensure Drager PAC 7000/8000 has been bump test prior to use. The PAC 7000/8000 must not use more than 24 hours continuously, it requires a bump test every 24 hours when operating.


Place the PAC7000/8000 loosely in the X Dock cradle. push down until it seats fully in the cradle

Close the cradle lid by pushing down until it locks into position

Once the cradle lid is closed, the X Dock will identify the gas monitor and automatically begin a “bump test”. The modules LED indicator will flash a series of different colours.





The X Docks module LED indicator will flash a series of different colours.

Blue – The module is running a function test

Green – The test was completed successfully

Red – The test has failed

Completion of Bump test Once the cradle has successfully completed the bump test and displays a green LED, the monitor can be removed from the cradle by lifting the lid and then lifting the monitor up and out. The gas monitor can now be used for testing as required

Note - If the gas monitor fails the bump test, the X Dock will automatically begin a re-calibration cycle and then another bump test. If the unit does not pass this second test, It must be removed from service.

Gas monitor performance monitoring

All bump test, calibrations dates and monitoring history can be access by via the X Dock manager. If a username and password is required, please contact your supervisor.




7 ALARM SETTINGS

The alarm settings of the Drager PAC 7000/8000 for the various single gases are shown below.

Ensure that you know what you are required to do in the event of the monitor alarming (ie put on respirator, evacuate area etc. Check with area supervisor if unsure.

Refer to Olympic Dam Quality Document # 46938 - IMS Element 7 – OHEM: Gas Monitoring Procedure for further reference information.

GAS Unit Low Alarm (A1) High Alarm (A2)

Ammonia (NH3) ppm 12 35

Carbon Dioxide (CO2) ppm 2500 30000

Carbon Monoxide (CO) ppm 15 30

Chlorine (Cl2) ppm 0.25 0.5

Hydrogen Cyanide (HCN) ppm 2.5 5

Hydrogen Sulphide (H2S) ppm 5 15

Nitrogen Dioxide (NO2) ppm 1.5 5

Sulphur Dioxide (SO2) ppm 1 5

Oxygen (O2) %Vol <19.5 >23.5

8 PERSONAL MONITORING

This section applies only to the Radiation & Occupational Hygiene Department that conduct exposure monitoring as per Olympic Dam Quality Document # 66606 – IMS Element 7 – Occupational Hygiene Exposure Management Procedure.


Attaching the Drager PAC 7000/8000

Select the correct PAC 7000/8000 for the gas being monitored. The PAC 7000/8000 should be positioned within the breathing zone of the worker (within a 30 cm radius of the nose/mouth). A collar, lapel, or breast pocket meets the criteria and also keeps the instrument visible in case hearing is impaired while working in high-noise environments.IMPORTANT: Take care not to cover or obstruct the PAC 7000/8000 with any clothing, PPE, etc.

Taking the Sample

Start the PAC 7000/8000 and record the start time. Take the measurement over a representative time period across the shift duration. The run time should not be less than 50% of the total shift duration of the employee.The monitoring log sheets (Qdoc#54657) must be provided to workers being monitored. Clear instructions must be given on how to fill in the paperwork;

Complete details of the tasks they perform Respiratory protection worn and when Provide details to the employee when and where the equipment will be

collected





Instructions issued to the worker

The following information and instructions must be given to the worker being issued a personal gas monitor for the purpose of exposure monitoring:A1 alarm:1. The A1 alarm is set at conservative airborne concentration levels of 50% of

the work exposure standard 8hrTWA. This indicates a change of the atmosphere in the work area/ confined space

2. It is recommended that a respirator is worn if an A1 alarm is activated

3. Workers can acknowledge the A1 alarm by pressing the OK button

4. The A1 alarm automatically stops as soon as the concentration drops below the alarm threshold

A2 alarm: 1. The A2 alarm is set at the airborne concentration levels of 100% of the work

exposure standard for 15mins (STEL). This indicates a significant change of the atmosphere in the work area/ confined space

2. If an A2 alarm is activated evacuate the work area and contact your job owner/supervisor

3. A suitable respirator must also be worn if an A2 alarm is activated

4. An A2 alarm can’t be acknowledged

Supervisors and Job Owners must ensure that when they are informed of an A1 or A2 alarm, they implement the appropriate controls to ensure exposure limits are not exceeded.

Completing the Sample

At the end of the test period remove the PAC 7000/8000 from the worker. Record the stop time.

Record, download the Data and enter into Cority

Once the PAC7000/8000 collected from the exposure monitoring, press the “OK” button to record the Peak, TWA and STEL readings onto the monitoring sheet and enter into Cority.Data also can be download if required:

1. Connect the PAC 7000 to the bump testing area.

2. Once connected this will automatically download the data from the gas monitor.

3. Open X-dock Manager software and search for the monitor serial number.

4. Choose logging event from the data tab.

5. Once selected, Gas vision software will be automatically opened.

6. Data can then be exported into an excel document.

7. Once data has been downloaded, record the maximum peak, STEL and TWA readings onto the monitoring sheet and enter into Cority.

ohem – operating instructions for dräger pac 7000 and 8000

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