0002_709 Gas Testing Using Portable Gas Monitors

G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG. SUBJECT

Approved

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS

ISSUE DATE

07/01/2016 APPROVAL

AAG

REPLACES

01/09/2013 PAGE NO.

1 OF 12

CONTENT 1.0

PURPOSE

2.0

SCOPE

3.0

REFERENCES

4.0

DEFINITIONS

5.0

RESPONSIBILITIES

6.0

REQUIREMENTS

SUPPLEMENTS: Supplement 2.709-1, Confined Space Entry Atmospheric Limits Supplement 2.709-2, Portable Gas Monitor Alarm Set Points Supplement 2.709-3, Portable Gas Monitor Limitations and Precautions Supplement 2.709-4, Daily Inspection and Function Test Log

1.0

PURPOSE The purpose of this general Instruction (GI) is to provide information regarding performing atmospheric gas tests using portable gas monitors (Industrial Scientific [ISC] models MX4 and MX6) as required by GI 2.100, Work Permit System. Tests for hydrogen sulfide (H2S), oxygen concentration, combustible gases, and/or any other toxic substances (e.g., carbon monoxide [CO]) shall be performed before issuing work permits and either continuously or periodically during work activities, as necessary. The Saudi Aramco-approved gas monitoring equipment and their accessories are used to continuously and simultaneously monitor the presence of combustible gases or vapors, toxic substances and oxygen concentration in air.

2.0

SCOPE 2.1 This instruction applies to all gas testing activities during construction, commissioning, start-up, operation, maintenance, decommissioning and demolition at Saudi Aramco (SA) facilities and SA project sites in accordance with GI 2.100. 2.2 This instruction is not a manual of how to operate portable gas monitors. 2.3 The equipment manufacturer's instruction manuals shall be consulted and utilized where applicable when operating, calibrating or function testing portable gas monitoring instruments. 2.4 Any conflict with this instruction and other applicable engineering standards (SAES), engineering procedures (SAEPs), or codes used by Saudi Aramco shall be referred to the appropriate standards committee chairman for resolution.

3.0

REFERENCES GI 2.100, Work Permit System * CHANGE

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NEW INSTRUCTION Saudi Aramco: Company General Use

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG.

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

Approved

ISSUE DATE

07/01/2016 APPROVAL

REPLACES

01/09/2013 PAGE NO.

AAG

2 OF 12

GI 6.012, Isolation, Lockout and Use of Hold Tags GI 1780.001, Atmosphere-Supplying Respirators Saudi Aramco Construction Safety Manual (CSM) ISC Ventis MX4 Product Manual ISC MX6 iBrid Multi Gas Monitor Operation Guide 4.0

DEFINITIONS 4.1

Alarm Set Point: The selected gas concentration level at which an alarm is activated.

4.2

Asphyxiant: A vapor or gas which can cause unconsciousness or death by suffocation (lack of oxygen).

4.3

Atmosphere-Supplying Respirator: A respirator that provides breathing air from a source independent of the surrounding atmosphere. These include supplied air (airline) breathing apparatus (SABA) and self-contained breathing apparatus (SCBA).

4.4

Asset Task Tracking System (ATTS): A corporate solution in SAP plant maintenance, which can be used to track the calibration of portable gas monitors and issue a notification to asset owners when the periodic calibration is due.

4.5

Calibration Gas: A gas of known concentration(s) used to set the instrument span or alarm level(s).

4.6

Confined Space: Any space that:  Has limited or restricted means of entry or exit.  Is not designed for human occupancy.  Contains or has the potential to contain a hazardous atmosphere.  Contains any other recognized serious safety or health hazard(s). Examples of confined spaces include tanks, vessels, vessel skirts, vaults, manholes, sewers, valve boxes, lift stations, and structures or excavations 1.2 m (4 ft.) deep or deeper. Areas above floating roof tanks where the top of the roof is more than 1.2 m (4 ft.) below the rim of the tank are also considered confined spaces.

4.7

Flammable Mixture: Hydrocarbon mixtures composed of various volatile compounds. Flammable materials contain vapors or gases which are potentially explosive and can ignite when exposed to an open flame or ignition source.

4.8

Function Test: A function test, or bump test, involves exposing the instrument’s sensors to a known gas concentration to indicate that the instrument will respond accordingly and that all alarms operate as they were designed and calibrated.

4.9

Gas Test: Analysis, using a company-approved gas monitoring instrument, of an atmospheric sample to determine the concentration of oxygen, and presence of combustible or toxic gases.

4.10 Hazardous Atmosphere: An atmosphere in which workers are exposed to the risk of death, injury, incapacitation or illness. 4.11 Immediately Dangerous to Life and Health (IDLH): An atmospheric concentration of any toxic, corrosive or asphyxiant substance that poses an immediate threat to life or would cause irreversible or delayed adverse health effects or would interfere with an individual's ability to escape from a dangerous atmosphere. * CHANGE

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG.

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

Approved

ISSUE DATE

07/01/2016 APPROVAL

AAG

REPLACES

01/09/2013 PAGE NO.

3 OF 12

4.12 Lower Explosive Limit (LEL): The lower vapor concentration boundary for a specific compound or material of interest at which the vapor-air mixture will propagate a flame (i.e., explode) if ignited. When testing for combustible gas using gas monitoring instruments, the amount of combustible gas present is specified in terms of % LEL: 0% LEL being a combustible gas-free atmosphere and 100% LEL being an atmosphere in which the gas is at its lower explosive limit. 4.13 Oxygen Deficient: An atmosphere that contains less than 20.0% oxygen. 4.14 Oxygen Enriched: An atmosphere that contains more than 23.5% oxygen. 4.15 Parts Per Million (PPM): A unit of measurement used for small portions or concentrations. In gas analysis, it expresses the volume of gas present in terms of its relationship to a whole of 1 million parts of air. 1% = 10,000 ppm. 1% of volume = 10,000 ppm, 100% of volume=1,000,000 ppm. 4.16 Sensor: A sensor (also called detector) is a converter that measures a physical quantity and converts it into a signal which can be read by an electronic instrument. A gas detecting sensor converts the presence of a gas or vapor into a measurable signal. 4.17 Threshold Limit Value (TLV): A time-weighted average concentration under which most people can work consistently for 8 hours a day, day after day, with no harmful effects. A table of these values and accompanying precautions is published annually by the American Conference of Governmental Industrial Hygienists. 5.0

RESPONSIBILITIES 5.1

Proponent management shall: 5.1.1

Ensure employees involved in gas testing and using portable gas monitoring equipment are in compliance with the procedures and requirements in this instruction.

5.1.2

Verify appropriate gas tests are conducted in accordance with GI 2.100 prior to issuing a work permit (and during the course of work activities when necessary), and for all jobs where toxic gas, combustible gas or oxygen deficiency/enrichment may exist.

5.1.3

Ensure that gas tester candidates have sufficient knowledge and experience, are capable of recognizing hazards, and are competent in the requirements of GI 2.100 and this instruction, prior to their enrollment in the applicable certification training.

5.1.4

Instruct employees to complete the gas testing e-Learning module available on the Training & Development (T&D) intranet site (http://tdonline.aramco.com.sa) prior to enrollment for gas testing certification in order to enhance their knowledge of gas testing techniques and requirements.

5.1.5

Ensure gas testing personnel are trained, tested and certified every two years in the correct use of gas testing equipment. Certified gas testers shall be informed of updates or changes to company and/or department requirements regarding use of portable gas monitors.

5.1.6

Ensure that sufficient number and type of gas testing devices are provided to gas testing personnel.

5.1.7

Department/division heads shall authorize employees as certified gas testers and issue certificates after successful completion of the gas testing training (in accordance with Section 6.2), and pass the subsequent certification test. Individuals will be certified on the specific gas monitoring equipment they have been trained on.

5.1.8

Ensure users of ISC gas monitor models MX4 and MX6 conduct daily inspection & function test and pre-use instrument checks in accordance with Section 6.23.

* CHANGE

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG.

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

5.1.9

Approved

ISSUE DATE

07/01/2016 APPROVAL

AAG

REPLACES

01/09/2013 PAGE NO.

4 OF 12

Verify that each instrument is properly calibrated every three months, at a minimum.

5.1.10 Ensure that each instrument calibration is tracked through ATTS. Guidance information on how to add portable gas monitors to ATTS can be found on the LPD intranet site (http://lp.aramco.com.sa/site/education/publications/special). 5.1.11 Immediately notify the vendor and arrange for any defective or damaged MX4 and MX6 instruments and any key accessories (such as the Docking Station, charging units, etc.) to be sent to the vendor’s service center for necessary repairs. 5.2

5.3

6.0

Training & Development shall: 5.2.1

Conduct gas tester classes and administer certification and re-certification tests so that the proponent division head can certify and maintain successful candidates as department/division gas testers.

5.2.2

Maintain a record of current certified gas testers.

5.2.3

Administer re-certification test to candidates that have successfully completed the gas tester eLearning course.

5.2.4

Administer e-certificates to proponent organizations for successful candidates.

Certified gas testers shall: 5.3.1

Ensure they maintain and carry a valid gas testing certificate signed by their respective division head.

5.3.2

Utilize only an instrument which bears a valid calibration-due-date sticker or indicates a valid calibration date in the system’s memory, has the correct sensors for the gases to be detected, and which passes daily inspection & function test and the pre-use checks per Section 6.23.

5.3.3

Use only portable gas monitors for which they have been trained and certified.

5.3.4

Conduct daily inspection & function test and pre-use checks for the MX4 and MX6 portable gas monitors in accordance with the manufacturer’s instructions. Results of the daily inspection & function test shall be recorded on a daily log sheet.

5.3.5

Conduct required gas tests for combustible atmospheres, toxic atmospheres (e.g., H2S, CO), oxygen concentration and additional air contaminants (as required) in accordance with GI 2.100 requirements and this instruction. Gas test limits shall meet the requirements of Section 6 to determine if safe working conditions exist, before a work permit is issued.

5.3.6

Enter the gas test results on the respective work permit and sign the corresponding gas testers section (i.e., Section 3 of the work permit).

REQUIREMENTS 6.1

Only personnel having a valid gas testing certificate issued by T&D and signed by the gas testers’ division head may perform gas tests in accordance with the requirements of GI 2.100 and use the ISC MX4 and/or MX6 devices to monitor atmospheric conditions.

6.2

Gas testing personnel shall be trained, tested and re-certified every two years in the correct use of gas testing equipment. Training includes the curriculum offered by T&D (BET #40069981, Gas Testing Program).

6.3

Gas testers shall carry a valid certificate issued by T&D and signed by the gas testers’ respective division head.

* CHANGE

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG.

6.4

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

Approved

ISSUE DATE

07/01/2016 APPROVAL

AAG

REPLACES

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5 OF 12

Atmospheric gas testing is required at all locations where injury to personnel or damage to property could occur due to the presence of combustible gases, toxic gases, or oxygen enriched/deficient atmospheres. Atmospheric gas testing shall be performed, but not be limited to the following work activities/situations: 6.4.1

Oxygen (O2) testing shall be conducted for: a) All confined space entry activities. b) All areas which may have a potential for an oxygen deficient or enriched atmosphere.

6.4.2

Combustible gas testing (i.e., LEL) shall be conducted for: a) All confined space entry activities. b) All hot work in restricted areas, as defined in GI 2.100. c) All work locations where combustible gases are or may be present.

6.4.3

Hydrogen sulfide (H2S) gas testing shall be conducted for: a) All confined space entry activities where H2S may be present. b) Jobs in areas where sour crude/gas is produced, transported, stored or processed and where proponent organizations determine that H2S gas testing is necessary. c) Jobs in close proximity to sewage treatment plants and sewer lift stations. d) All work locations where H2S monitoring is required for work or operational purposes.

6.4.4

Carbon monoxide (CO) gas testing shall be conducted for all confined space entry activities.

6.5

Other toxic gas testing should be conducted for all work locations where other toxic gas(es) or vapor(s) is (are) or may be present. Examples of other toxic gases include carbon dioxide (CO2), sulfur dioxide (SO2), chlorine (Cl2), ammonia (NH3), hydrogen chloride (HCl), and mercury vapor (Hg). The Saudi Aramco Loss Prevention Department should be consulted when questions arise regarding other toxic gas testing.

6.6

The work permit issuer must determine when periodic, frequent or continuous gas monitoring is required, specify the requirement on the associated work permit, and make arrangements to have a certified gas tester available to perform required tests.

6.7

The person conducting gas tests in an atmosphere known or suspected of being potentially hazardous should enter the area only after donning adequate personal protective equipment, including but not limited to appropriate atmosphere-supplying respirator equipment, (e.g., self-contained breathing apparatus [SCBA]). Refer to GI 1780.001 for details.

6.8

Hot work is not permitted if the atmosphere is above 0% of the lower explosive limit (LEL).

6.9

Work is not permitted if the atmosphere has an O2 concentration above 23.5%.

6.10 Work is not permitted in areas where the atmosphere is at or above 10% LEL, H2S concentration is at or above 100 ppm or CO concentration is at or above 1000 ppm even if atmosphere-supplying respirator equipment is used. 6.11 An atmosphere-supplying respirator shall be used if any of the following atmospheric conditions exist: 6.11.1 O2 concentration is less than 20.0%. 6.11.2 Flammable/combustible mixtures are at or above 5% and less than 10% of the LEL. 6.11.3 H2S concentration is at or above 10 ppm and less than 100 ppm. 6.11.4 CO concentration is at or above 35 ppm and less than 1000 ppm. * CHANGE

** ADDITION

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG.

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

Approved

ISSUE DATE

07/01/2016 APPROVAL

AAG

REPLACES

01/09/2013 PAGE NO.

6 OF 12

6.12 The proponent organization division head must sign applicable work permits when H2S concentration is at or above 10 ppm and below 100 ppm, or O2 concentration is below 20.0%, per GI 2.100. 6.13 Atmospheric conditions prior to entry or during work inside a confined space shall meet the requirements as specified in Supplement 2.709-1, Confined Space Atmospheric Limits. 6.14 Atmospheric gas tests for a confined space shall be performed and immediately recorded: 6.14.1 Prior to entry. 6.14.2 After breaks or interruptions in the work. 6.14.3 Changes to the conditions inside the confined space. 6.14.4 At periodic intervals specified on the permit (e.g., every 2 hours) or continuously as necessary to determine whether acceptable atmospheric conditions are being maintained during the course of the confined space entry. 6.15 Initial gas testing prior to entering a confined space shall be performed with all mechanical ventilation shut down at least 15 minutes prior to testing. Additional testing (e.g., after breaks) shall be conducted with the ventilation system turned on to ensure that contaminants are being removed and that the ventilation system is not the source of contamination. 6.16 Confined space entry is not permitted if the atmosphere is at or above 10% LEL, H 2S concentration is at or above 100 ppm, carbon monoxide (CO) concentration is at or above 1,000 ppm or oxygen (O2) concentration is above 23.5%. 6.17 Whenever testing of the atmosphere results in a gas monitor alarm condition (see Supplement 2.709-2, Portable Gas Monitor Alarm Set Points), work shall be stopped until proper controls are implemented, which may include establishing appropriate work procedures and complying with work permit requirements per GI 2.100. 6.18 SA-approved portable gas monitoring equipment (i.e., MX4 and MX6) and their accessories (e.g., Docking Station, calibration gas cylinder) are available via B2B. The appropriate material numbers for these items are listed on the LPD intranet site: (http://lp.aramco.com.sa/site/services/equipment/other/default.aspx?equipment_id=9). 6.19 Operation of ISC models MX4 and MX6 shall follow manufacturer’s instructions and the curriculum provided in BET #40069981. Guidance information on the operation of portable gas monitors can be found on the Ventis MX4 Features and Functions and iBrid MX6 Features and Functions pamphlets, respectively. These guidance pamphlets can be found on the LPD intranet site: (http://lp.aramco.com.sa/site/education/publications/special). 6.20 The ISC models MX4 and MX6 have certain limitations which must be adhered to per Supplement 2.709-3 in order to avoid potentially dangerous consequences. 6.21 Each gas testing instrument shall receive a full calibration of all sensors every three (3) months, at a minimum. Information on how to request calibration service from the vendor can be found on the Guidelines for Requesting Calibration Service for Ventis MX4 and iBrid MX6. These guidelines can be found on the LPD intranet site: (http://lp.aramco.com.sa/site/education/publications/special). Note: Serial number of each equipment that requires calibration service shall be included in the calibration request. 6.22 Each portable gas monitor instrument shall be calibrated either via the vendor’s service center or via the onsite Docking Station. The location of installing Docking Station devices shall be decided by the proponent. * CHANGE

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG.

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

Approved

ISSUE DATE

07/01/2016 APPROVAL

AAG

REPLACES

01/09/2013 PAGE NO.

7 OF 12

6.23 Users of portable gas monitors shall conduct daily inspection & function test and pre-use checks. Results of the daily inspection & function test shall be recorded on a daily log sheet (see Supplement 2.709-4). 6.23.1 The daily inspection and function test shall include the following: a) Visual inspection b) Pump leak test c) Function test d) Zeroing e) Clearing the peaks 6.23.2 The pre-use instrument checks shall include the following: a) Visual inspection b) Zeroing c) Clearing the peaks d) Pump leak test if air-sample accessories to be used (e.g., sample tubing, probe) 6.24 Function tests shall be conducted per the manufacturer’s instructions. Instructions for conducting function tests are found on the respective portable gas monitor operating instructions. Note: The purpose of the daily function test is to check for sensor and alarm functionality. The installed sensors are briefly exposed to expected concentrations of calibration gases that are greater than the sensors’ alarm set points. When one or more sensors “pass” the test, they are “functional” and the unit will alarm. For the unit to pass the function (bump) test, all sensors shall “pass” the test. The function test is not the same as a calibration test and does not measure for sensor accuracy. 6.25 If a portable gas monitor instrument does not successfully pass the pre-use instrument checks, it shall be removed immediately from service and repaired/calibrated accordingly. 6.26 The useful life of function test gas canister is designated by expiration date on canister. Any expired or spent canisters are to be disposed of by sending them to the nearest Storehouse Operations Reclamation facility. Completion of Saudi Aramco Form 112 (Material Disposal Form) is required to request this service.

* CHANGE

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG. SUBJECT

Approved

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS

ISSUE DATE

07/01/2016 APPROVAL

AAG

CONCURRED BY:

_________________________________ GENERAL MANAGER Training & Development

Date: _________________

APPROVED BY:

________________________________ MANAGER Loss Prevention Department

Date: _________________

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COMPLETE REVISION

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL

2.709 ISSUE DATE

LOSS PREVENTION DEPARTMENT

ISSUING ORG.

07/01/2016 APPROVAL

GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

Approved

AAG

REPLACES

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9 OF 12

SUPPLEMENT 2.709-1, Confined Space Entry Atmospheric Limits 1.0

The following conditions are required prior to entry into or work inside a confined space: 1.1

No atmosphere-supplying respirator is required if:  Oxygen (O2) concentration is at or above 20.0% and less than or equal to 23.5%.  Flammable/combustible mixtures are less than 5% of the LEL.  Carbon Monoxide (CO) is less than 35 parts per million (ppm).  Hydrogen sulfide (H2S) is less than 10 ppm. 

1.2

Other potential toxic gas concentrations are at or below their threshold limit value (TLV).

An atmosphere-supplying respirator shall be continuously worn if:     

O2 concentration is less than 20.0%. Flammable/combustible mixtures are at or above 5% and less than 10% of the LEL. CO concentration is at or above 35 ppm and less than 1000 ppm. H2S concentration is at or above 10 ppm and less than 100 ppm. Other potential toxic gas concentrations are above their designated TLV and at or below their IDLH level.

1.3

Confined space entry is not permitted if the atmosphere is at or above 10% LEL, H2S concentration is at or above 100 ppm, CO concentration is at or above 1,000 ppm, O2 concentration is above 23.5%, or other potential toxic gas concentrations are above their IDLH level.

1.4

These requirements are summarized in the following table.

Confined Space Entry

Oxygen (O2)

Flammable/combustible Mixtures

Carbon Monoxide (CO)

Hydrogen Sulfide (H2S)

Permitted without an atmospheresupplying respirator

At or above 20% and less than or equal to 23.5%

Less than 5%

Less than 35 ppm

Less than 10 ppm

Less than 20%

At or above 5% and less than 10%

At or above 35 ppm and less than 1000 ppm

At or above 10 ppm and less than 100 ppm

Above 23.5%

At or above 10%

At or above 1000 ppm

At or above 100 ppm

Permitted only while continuously wearing an atmospheresupplying respirator No entry permitted

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL

2.709

LOSS PREVENTION DEPARTMENT

ISSUING ORG.

GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

Approved

ISSUE DATE

07/01/2016 APPROVAL

AAG

REPLACES

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10 OF 12

SUPPLEMENT 2.709-2, Portable Gas Monitor Alarm Set Points 1.0

2.0

The following alarm set points have been established for Saudi Aramco portable gas monitoring instruments (i.e., ISC MX4 and MX6): 1.1

Oxygen (O2):  Low Alarm: 20.0%  High Alarm: 23.5%

1.2

Lower Explosive Limit (LEL): 5%

1.3

Hydrogen sulfide (H2S): 10 ppm

1.4

Carbon monoxide (CO): 35 ppm

1.5

Sulfur dioxide (SO2): 2 ppm

1.6

Chlorine (Cl2): 0.5 ppm

1.7

Ammonia (NH3): 25 ppm

Alarm set points for substances/gases not covered under this GI will be established through consultation with LPD and the Environmental Protection Department.

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G. I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL

2.709

LOSS PREVENTION DEPARTMENT

ISSUING ORG.

GAS TESTING USING PORTABLE GAS MONITORS

SUBJECT

Approved

ISSUE DATE

07/01/2016 APPROVAL

AAG

REPLACES

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11 OF 12

SUPPLEMENT 2.709-3, Portable Gas Monitor Limitations and Precautions 1.0

The Industrial Scientific (ISC) models MX4 and MX6 have certain limitations which must be adhered to in order to avoid potentially dangerous consequences.

2.0

Function test the instrument in a clean environment at the beginning of each day using a known concentration of test gas. If the monitor does not pass the function (bump) test, a full calibration is required. Only use a portable gas monitor with a valid calibration date.

3.0

Servicing the unit, replacing or recharging battery packs, or using the communications port (for MX4/MX6 models) must only be performed in a nonhazardous environment.

4.0

Portable gas monitors are susceptible to poisoning of the sensors when exposed to vapors containing appreciable concentration of contaminants such as: 4.1

Tetra Ethyl Lead (e.g., from leaded gasoline or associated sludge/residue).

4.2

Silicone vapors (e.g., from greases). Silicone compound vapors or other contaminants may affect the combustible gas sensor and cause readings to be lower than actual gas concentrations.

4.3

The effects of these poisons are that they reduce sensitivity to respective sensors. Any instrument exposed to such vapors without an appropriate filter in place to remove the contaminants must be function tested. If it fails the test, the affected instrument must be sent for service prior to use.

5.0

To ensure combustible gas testing accuracy (i.e., LEL), the sampled atmospheres should contain at least 16% oxygen by volume (unless the IR sensor of the MX6 is being used). Oxygen deficient atmospheres may cause combustible gas readings to be lower than actual concentrations.

6.0

Oxygen enriched atmospheres (i.e., O2 greater than 23.5%) may cause combustible gas readings to be higher than actual concentrations.

7.0

Obstructions of the sensor openings and/or contamination of the water barriers may cause readings to be lower than actual gas concentrations,

8.0

The Ventis MX4 is certified for use in Class I, Zone 1 hazardous locations within an ambient temperature range of -20 °C to +50 °C. The MX6 iBrid is certified for use in Class I, Zone 1 hazardous locations within an ambient temperature range of -20 °C to +40 °C (with the alkaline battery pack) and -20 °C to +55 °C (with the lithium ion battery pack).

9.0

Minimize prolonged exposure to high temperature environments.

10.0

High over-range conditions may indicate explosive gas concentrations.

11.0

Physical abuse such as crushing or drowning the instrument, using unapproved materials, or performing service or repairs by an unauthorized provider will nullify the manufacturer’s warranty.

12.0

For maximum safety and operations performance, read and understand the respective operations manuals for each portable gas monitor available online at http://www.indsci.com.

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GAS TESTING USING PORTABLE GAS MONITORS

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SUPPLEMENT 2.709-4

DAILY INSPECTION AND FUNCTION TEST LOG Month of _______________

Organization _______________

Instrument Model _______________

Instrument Serial No. ________________

Date

Visual Inspection P

F

Leak Test P

F

Org. Code ______________

Gas Function Test P

F

Zeroing

Clearing the Peaks

P

Yes

F

Checked by

Remarks

No

__________________________ Supervising Operator Note:

Conduct an inspection and function test at the beginning of each day or prior to use in accordance with GI 2.709, Section 6.23. The results of the daily inspection & function test are recorded on the above Daily Inspection and Function Test Log. Remarks should reflect failure of any pre-use checks or function tests. P = Pass

* CHANGE

F = Fail

** ADDITION

(Check P or F)

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