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G.I. No. No.

SAUDI SAUDI ARABI ARABIAN AN OIL COMPA COMPANY NY (Saudi (Saudi Aramc Aramco) o)

GENERAL INSTRUCTION INSTRUCTION MANUAL ISSUIN ISSUING G ORG. ORG. SUBJECT

  Approved

2.709

LOSS PREVENTION PREVENTION DEPARTMENT 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 5.0

RESP RESPON ONSI SIBI BILI LITI TIES ES

6 .0

REQUIREMENTS

SUPPLEMENTS:

Supplement Supplement 2.709-1, 2.709-1, Confined Confined Space Entry Entry Atmospheri Atmosphericc Limits Supplement Supplement 2.709-2, 2.709-2, Portabl Portablee Gas Monitor Monitor Alarm Alarm Set Points Points Supplement Supplement 2.709-3, 2.709-3, Portable Portable Gas Monitor Monitor Limitation Limitationss and Precautions Precautions Supple Supplemen mentt 2.709-4, 2.709-4, Daily Daily Inspect Inspection ion and Functi Function on Test Test Log

1.0

PURPOSE

The The purpos purposee of this this gener general al Instr Instruc ucti tion on (GI) (GI) is to prov provid idee inform informat atio ion n rega regard rdin ing g perf perfor ormi ming ng atmos atmosph pher eric ic gas test testss Work  usin using g port portab able le gas gas moni monito tors rs (Ind (Indus ustr tria iall Scie Scient ntif ific ic [ISC [ISC]] mode models ls MX4 MX4 and and MX6) MX6) as requ requir ired ed by GI 2.10 2.100, 0,     Permit System .    Test         stss for Te for hydr hydrog ogen en sulf sulfid idee (H2S), oxyge oxygen n concent concentrat ration ion,, combust combustibl iblee gases, gases, and/or and/or any other other toxic toxic substance substancess (e.g., (e.g., carbon monoxide monoxide [CO]) [CO]) shall be perfor performed med before before issuing issuing work permits permits and either continuou continuously sly or    periodica periodicallly during during work activities, activities, as necessary necessary.. The The Saudi Aramco-app Aramco-approved roved gas monitoring monitoring equipment equipment and their  accesso accessorie riess are used used to continu continuous ously ly and simult simultaneo aneousl usly y monito monitorr the presenc presencee of of combus combustib tible le gases gases or vapors vapors,, toxic toxic subs substa tanc nces es and oxyg oxygen en conce concent ntra rati tion on in air. air. 2.0

SCOPE

2.1 This This instru instructi ction on applie appliesto sto all gas testin testing g activit activities ies during uring constr construct uction ion,, commis commissio sionin ning, g, startstart-up, up, operat operation ion,, main mainte tena nanc nce, e, deco decomm mmis issi sion onin ing g and and demo demoli liti tion on at Saud Saudii Aram Aramco co (SA) (SA) faci facili liti ties es and and SA proj projec ectt site sitess in accorda accordance nce with with GI 2.100. 2.100. 2.2 This This instru instructi ction on isnot isnot a manual manual ofhow to operat operatee port portable able gasmon gasmonito itors. rs. 2.3 The equipme equipment nt manufac anufactur turer er's 's instru instructi ction on manual manualss shall shall be consul consulted ted and utiliz utilized ed where where appl applica icable ble when when operat operating ing,, calibrati calibrating ng or functi function on testin testing g portab portable le gas monito monitorin ring g instru instrumen ments. ts. 2.4 2.4 Any Any conf confli lict ct withthis withthis inst instru ruct ctio ion n andot andothe herr appl applic icab able le engin engineer eerin ing g stan standa dard rdss (SAE (SAES) S),,engineering engineering procedures procedures (SAEPs (SAEPs), ), or codes codes used used by Saudi Saudi Aramco Aramco shall shall be be refe referre rred d to the appropr appropriat iatee stan standar dards ds commit committee tee chairma chairman n for resolution resolution.. 3.0

REFERENCES

GI 2.10 2.100, 0, Work Permit System              * CH CHANGE

** AD ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

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.

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

** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

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.

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 gastests are conducted inaccordance withGI 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 gastesting personnelare trained, tested and certified everytwo 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 numberand type of gas testingdevices are provided togas 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 modelsMX4 and MX6 conduct dailyinspection &function test and    pre-use instrument checks in accordance with Section 6.23.

* CHANGE

** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

G.I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG. SUBJECT

2.709

LOSS PREVENTION DEPARTMENT GAS TESTING USING PORTABLE GAS MONITORS                                     

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 calibratedevery three months, at a minimum.

5.1.10 Ensure that eachinstrument calibration is trackedthrough ATTS. Guidance information on howto 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 andarrange for anydefective or damagedMX4 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 certificationand re-certification testsso 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 organizationsfor successful candidates.

Certifiedgas testers shall: 5.3.1

Ensure theymaintain andcarry a valid gastesting certificatesigned bytheir 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 forwhich they have been trained andcertified.

5.3.4

Conduct daily inspection & function test and pre-use checks for the MX4 and MX6 portable gas monitors in accordance with the manufacture r ’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, testedand re-certified everytwo yearsin the correct use of gas testing Gas Testing Program)  .              equipment. Training includes the curriculum offered by T&D (BET #40069981,

6.3

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

* CHANGE

** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

G.I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG. SUBJECT

6.4

  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.

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 worklocations where combustible gasesare or maybe 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) gastesting shallbe conducted forall 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 personconducting gastests inan atmosphere knownor suspected of being potentiallyhazardous 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 workis not permitted ifthe atmosphereis above 0% of the lowerexplosive limit (LEL).

6.9

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

6.10 Work is not permitted inareas where the atmosphere isat 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 beused ifany ofthe following atmosphericconditions exist: 6.11.1 O2  concentration is less than 20.0%. 6.11.2 Flammable/combustible mixtures areat 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 isat orabove 35 ppm and less than1000 ppm. * CHANGE

** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

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.

6 OF 12

6.12 The proponent organization division h ead must sign applicable workpermits 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 entryor during work insidea confined spaceshall meet the requirements as specified in Supplement 2.709-1, Confined Space Atmospheric Limits. 6.14 Atmospheric gas testsfor a confined space shallbe performedand 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 insidethe confined space. 6.14.4 At periodic intervals specified onthe permit (e.g., every 2 hours) or continuously as necessaryto determine whether acceptable atmospheric conditions are being maintained during the course of the confined space entry. 6.15 Initial gas testing priorto entering a confined space shall be performed with all mechanicalventilation 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 isnot permitted if the atmosphere is at or above 10% LEL, H2S 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                  iBrid MX6 Features and Functions      pamphlets,          on the Ventis MX4 Features and Functions    and  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 certainlimitations which must be adheredto per Supplement 2.709-3 in order to avoid potentially dangerous consequences. 6.21 Each gas testing instrument shall receive afull calibration of all sensors every three (3) months, ata Guidelines   minimum. Information on how to request calibration service from the vendor can be found on the   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-on site Docking Station. The location of installing Docking Station devices shall be decided by the proponent. * CHANGE

** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

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.

7 OF 12

6.23 Users of portable gasmonitors shall conduct dailyinspection & function testand pre-use checks. Resultsof                  the daily inspection & function test shall be recorded on a daily log sheet (see Supplement 2.709-4). 6.23.1 The dailyinspection andfunction 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 leaktest if air-sample accessories tobe used (e.g., sample tubing, probe) 6.24 Function tests shall be conducted per the manufacturer’s instructions. Instructions for nducting co 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 concentrat ions 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 nction fu 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 offunction test gascanister is designated byexpiration date on canister. Anyexpired 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

** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

G.I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG. SUBJECT

  Approved

2.709 ISSUE DATE

LOSS PREVENTION DEPARTMENT

REPLACES

07/01/2016

GAS TESTING USING PORTABLE GAS MONITORS                                     

  APPROVAL

01/09/2013 PAGE NO.

AAG

CONCURRED BY: _________________________________ GENERAL MANAGER Training & Development

Date: _________________ 

APPROVED BY:

Date: _________________  

* CHANGE

________________________________ MANAGER Loss Prevention Department

** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

8 OF 12

COMPLETE REVISION

X

G.I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL

2.709 ISSUE DATE

LOSS PREVENTION DEPARTMENT

ISSUING ORG. SUBJECT

  Approved

07/01/2016

GAS TESTING USING PORTABLE GAS MONITORS                                     

  APPROVAL

AAG

REPLACES

01/09/2013 PAGE NO.

9 OF 12

SUPPLEMENT SUPPLEMENT 2.709-1, Confined Space Space Entry Atmospheric Limits

1.0

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

1.2

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.



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 spaceentry isnot permittedif the atmosphere isat or above 10% LEL, H2S concentration is at or  above 100 ppm, CO concentration is at or above 1,000 ppm, 2O  concentration is above 23.5%, or other    potential toxic gas concentrations are above their IDLH level.

1.4

These requirements are summarizedin the following table.

Confined Space Entry

Oxygen (O2)

Permitted without an atmospheresupplying respirator 

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

Less than 5%

Less than 20%

At or above 5% and less than 10%

Above 23.5%

At or above 10%

Permitted only while continuously wearing an atmospheresupplying respirator    No entry permitted

* CHANGE

** ADDITION

Flammable/combustible Carbon Monoxide Mixtures (CO)

NEW INSTRUCTION SaudiAramco:Company GeneralUse

Less than 35 ppm

Hydrogen Sulfide (H2S)

Less than 10 ppm

At or above 35 ppm At or above 10 and less than 1000   ppm and less than ppm 100 ppm

At or above 1000 ppm

At or above 100 ppm

COMPLETE REVISION

X

G.I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL

2.709

LOSS PREVENTION DEPARTMENT

ISSUING ORG. SUBJECT

  Approved

GAS TESTING USING PORTABLE GAS MONITORS                                     

ISSUE DATE

07/01/2016   APPROVAL

AAG

REPLACES

01/09/2013 PAGE NO.

10 OF 12

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

1.0

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%  

2.0

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.

* CHANGE

** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

G.I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL

2.709

LOSS PREVENTION DEPARTMENT

ISSUING ORG. SUBJECT

  Approved

GAS TESTING USING PORTABLE GAS MONITORS                                     

ISSUE DATE

07/01/2016   APPROVAL

AAG

REPLACES

01/09/2013 PAGE NO.

11 OF 12

SUPPLEMENT SUPPLEMENT 2.709-3, 2.709-3, P Portable ortable Gas Monitor Limitations and Precautions

1.0 2.0

The Industrial Scientific(ISC) models MX4 and MX6 have certain limitations whichmust be adhered to in order  to avoid potentially dangerous consequences. Function test the instrument ina clean environment at the beginning ofeach 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 associatedsludge/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 poisonsare that they reduce sensitivityto 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 enrichedatmospheres (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 locationswithin 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

9.0

  battery pack). 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 manualsfor each   portable gas monitor available online at http://www.indsci.com.

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** ADDITION

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X

G.I. No.

SAUDI ARABIAN OIL COMPANY (Saudi Aramco)

GENERAL INSTRUCTION MANUAL ISSUING ORG. SUBJECT

  Approved

2.709 ISSUE DATE

LOSS PREVENTION DEPARTMENT

07/01/2016   APPROVAL

GAS TESTING USING PORTABLE GAS MONITORS                                     

AAG

REPLACES

01/09/2013 PAGE NO.

12 OF 12

SUPPLEMENT 2.709-4

DAILY INSPECTION AND FUNCTION TEST LOG

Month of _______________

Organization _______________

Instrument M odel _______________  

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 b y

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

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F = Fail

** ADDITION

(Check P or F)

NEW INSTRUCTION SaudiAramco:Company GeneralUse

COMPLETE REVISION

X