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H2S Training

At the completion of the course the candidates will be able to :<br> Identify what H2S is and how to deal with.<br> Recognize the characteristics of H2S<br> Identify the H2S risks in hazardous atmospheres .<br>Understand and describe the effects of H2S on humans and metals.<br>Know how to use H2S testing devices at the location. <br>Demonstrate the correct use of (SCBA) <br>Discharge their responsibilities within the Permit to Work System. <br>

WissamMandel
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H2S Training

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  1. HYDROGEN SULPHIDE (H2S) • NAYA for Engineering services & Trainingg - NEST • IRAQ – BASRAH- Nasiriya -Waist- Baghdad/ Lebanon – Beirut / Turkey – Istanbul /Malaysia - Kuala Lumpur • Mobil: +9647802177598 , +9647804524738 • naya_engineering_services@yahoo.com • http://facebook.com/naya.nest • https://twitter.com/NESTNAYA • www. Naya-est.com • info@naya-est.com

  2. ) Trainer : Wissam Mandel

  3. HYDROGEN SULPHIDE (H2S) • At the completion of the course the candidates will be able to : • Identify what H2S is and how to deal with. • Recognize the characteristics of H2S • Identify the H2S risks in hazardous atmospheres . • Understand and describe the effects of H2S on humans and metals. • Know how to use H2S testing devices at the location. • Demonstrate the correct use of (SCBA) • Discharge their responsibilities within the Permit to Work System.

  4. HYDROGEN SULPHIDE (H2S) • Contents: - Glossary - Introduction. • What H2S is. • How it is formed. • Where it is found. • Properties and characteristics. • H2S common Names. • How it is measured. • Health Hazards of H2S. • Concentration & toxic levels. • Detection & Monitoring . • H2S Zones • Contingency plan. • Breathing Apparatus. / Training • Written exam

  5. HYDROGEN SULPHIDE (H2S) • GLOSSARY: 1- H2S : Hydrogen Sulphide. 2- EBA : Escape Breathing Apparatus. 3- SCBA : Self-Contained Breathing Apparatus 4- PPM : Part Per Million. 5- OEL : Occupational Exposure Limits. 6- WEL : workplace Exposure Limits. 7- PEL : Permissible Exposure Limits. 8- TLV : Threshold Limit Value. 9- ER : Emergency Response. 10- ERT : Emergency Response Team. 11- IDHL : Immediately Dangers to health & Life. 12- LTEL : Long Term Exposure Limit. 13- STEL : Short Term Exposure Limit.

  6. HYDROGEN SULPHIDE (H2S) • INTRODUCTION • Hydrogen sulphide, a deadlly substance found in many workplaces, can be an invisible, silent killer if safe work practices aren’t followed. • Employees can work safely in areas with the potential of this dangerous gas by following their organization’s Hydrogen sulphideContingency Plan, knowing how and when to use respiratory protection and knowing the meaning of their facility’s hydrogen sulphidewarning sounds and signals.

  7. HYDROGEN SULPHIDE (H2S) • Our topics include characteristics of hydrogen sulphide, symptoms of H2S exposure, exposure limits, use of respiratory protection, confined space entry, warning devices and monitoring systems, evacuation procedures and safety tips for working in H2S-prone areas. • Understanding and controlling the hazards which presents is a matter of life and death. • Your organization’s Hydrogen sulphide Contingency Plan contains detailed information designed to control the hazards of hydrogen sulphide.

  8. HYDROGEN SULPHIDE (H2S) • Included in this plan will be a description of engineering controls, worker training requirements, protective equipment, gas monitoring devices and procedures, safe work practices and emergency evacuation and rescue plans—all designed to keep you safe from the harmful effects of hydrogen sulphide . • Our training course reviews thesekey issues to protect employees from H2S exposures when followed. • You should always remember, the most important aspect of hydrogen sulfide safety is to take your training seriously and maintain a commitment to your own safety at all times.

  9. HYDROGEN SUPHIDE (H2S)غاز كبريتيد الهيدروجين The difference between a hero and a fool is training.

  10. HYDROGEN SULPHIDE (H2S) • What Is H2S ? - A colorless gas that is heavier than air and tends to accumulate in low-lying areas. - Has an offensive odor similar to rotten eggs at low concentration, at higher concentrations it rapidly deadens the sense of smell - A poisonous gas that can paralyze the breathing system and can kill in minutes - Highly toxic and very corrosive to certain metals and elastomers - Belongs to the inorganic sulphidefamily

  11. HYDROGEN SULPHIDE (H2S) • Properties and characteristics: • Colorless and invisible gas (Transparent) , Highly toxic & has rotten eggs odor. • Heavier than air vapor Density = 1.189 , so that it accumulates in low lying areas . • H2S burns with a blue flame and gives (SO2) gas , which irritates the eyes and lungs • It forms pyrophoric iron sulphide ,it can auto ignite when it contacts with the air. • It is corrosive in the presence of water and causes cracking • It is Soluble in water and Hydrocarbon liquids . • Flammable Gas.

  12. HYDROGEN SULPHIDE (H2S) • H2S in concentrations between 4.3% and 46.0% auto ignites at 500°F (260°C) • Burning H2S produces another toxic gas called SO2 (Sulphur Dioxide) • SulphurDioxide (SO2) is a colorless or transparent gas and is non-flammable. It is also heavier than air with a specific gravity of 2.264@0°C. • SO2 is extremely irritating to the eyes and mucous membranes of the upper respiratory tract. It has exceptionally good warning properties in this regard than H2S.

  13. HYDROGEN SULPHIDE (H2S) • How is H2S formed? • Hydrogen sulphideis formed when two hydrogen atoms & one atom of sulfur. S H H

  14. HYDROGEN SULPHIDE (H2S) • Where is it found ? • Natural Sources: • H2S is produced in nature by the decomposition of organic materials by bacteria • It may also develop in low Oxygen or low-lying areas and can be found with natural gas, petroleum and volcanic gases as well as unstabilizedcrude oil and gas streams.

  15. HYDROGEN SULPHIDE (H2S) Industrial Sources: H2S is either a product or by-product of waste materials. It can be found in familiar industries such as natural gas processing plants, petroleum refineries, leather tanning, pulp mills, iron and steel mills, oil and gas wells, sewage treatment, commercial laboratories, etc. Hydrogen sulfide also exists in many industrial processes, often as a byproduct or waste material.

  16. HYDROGEN SULPHIDE (H2S) • How is H2S measured ? • Standard measure for H2S is Parts Per Million ( PPM ) - PPM = Parts of gas Per Million Parts of Air by volume 1% = 10,000 PPM

  17. HYDROGEN SULPHIDE (H2S) • H2S common Names: Rotten-Egg Gas Hydrogen Sulfide Sewer Gas H2S Swamp Gas Stink Damp Hepatic Gas Hydrosulphuric Acid Sour Crude / Sour Gas Sulphurated Hydrogen Dihydrogen Sulfide Zwavelwaterstoff

  18. HYDROGEN SULPHIDE (H2S) • Health Hazards effect of H2S • Hydrogen sulphide can have an array of health effects on the body depending on exposure concentrations. • H2S will enter through the lungs and is considered a chemical asphyxiate. • it blocks the transfer of oxygen to the blood cells and causes paralysis of the respiratory system. • Exposure Limits • Here are the Hydrogen sulphide (H2S) exposure limits: - Long Term Exposure Limit: 10 ppm for an 8-hr period avg. - Short Term Exposure Limit: 15 ppm for a 15-minute avg. - Immediately Dangerous to Life or Health: 100 ppm

  19. HYDROGEN SULPHIDE (H2S) Health Hazards effect of H2S • How does H2S affect Individuals? • Factors that determine the effect of H2S on individuals: - Duration : The length of time the individual is exposed. - Frequency :How often the individual has been exposed. - Intensity : How much concentration the individual was exposed to. How H2S enter into the Body: • Inhalation • Accidental Injection • Skin Absorption

  20. HYDROGEN SULPHIDE (H2S) • Target Organs: Lungs Eyes Nose Respiratory control center Liver

  21. HYDROGEN SULPHIDE (H2S) • Concentration Levels & Effects: • The following table below lists the health effects of exposure to H2S.

  22. HYDROGEN SULPHIDE (H2S) H2S Zones Classifications: - Procedures will be in place for entry into, and work in the classified areas as per company guidelines. These procedures will include a series of precautions, selected according to the risk of exposure. All workers involved will be trained in the hazards of hydrogen Sulphide and precautions to be adopted during work in a zoned area. - The H2S Area Zones will be sub-classified into :- • Major Areawhere H2S maybe encountered during normal operation but can be made safe • Minor Areawhere is normally free of H2S but maybe contaminated by system malfunction, leakage or breathing of containment.

  23. HYDROGEN SULPHIDE (H2S) • Hydrogen sulphideCondition Levels: • Some facilities use a color-coded system of warnings so workers approaching a potential hydrogen sulphidearea will have knowledge of the current conditions. If your facility uses such a system, make sure you understand the meaning of each color-coded signal.

  24. HYDROGEN SULPHIDE (H2S) • Hydrogen Sulfide Condition Levels: • Condition Green “POSSIBLE DANGER” • H2S concentration is less than 10ppm. Drilling and production operations are under control. There are NO alarms. • Condition Yellow “MODERATE DANGER” • H2S concentration is 10ppm - 15ppm at some point on location and the well or production stream is under control. Amber flashing light is activated. • Condition Red “EXTREME DANGER” • H2S concentration is > 15ppm at any point on the location or loss of well control occurs. Amber flashing light and audible alarms are activated.

  25. HYDROGEN SULPHIDE (H2S) • Detection & Monitoring • As mentioned, one of Hydrogen sulphide ‘s effects on the body is it deadens the sense of smell at fairly low concentrations. • This can cause a false sense of security and therefore we must use air monitoring equipment to detect H2S. • A variety of equipment can be used to do as follwoing : - Fixed monitors can be located where contamination is possible. -Alarms to alert personnel when H2S levels exceed permissible exposure limits. -Portable monitors that can be hand held or attached on body.

  26. HYDROGEN SULPHIDE (H2S) • Types of Gas movable detection devices

  27. HYDROGEN SULPHIDE (H2S) • Detection & Monitoring • Air monitoring should be done anytime there is a potential for someone to be exposed over the PEL of H2S e.g: • At all times when working around H2S concentrations • During all confined space entries. • Any time there is a potential to be exposed over the PEL. • When gauging tanks.

  28. HYDROGEN SULPHIDE (H2S) • Types of Gas fixed detection devices

  29. HYDROGEN SULPHIDE (H2S) • Alarms: • Most alarms will consist of an amber strobe light, a blue strobe light, a red strobe light, and a dual tone audible alarm. • Types of Alarm: • Low Level Alarm: 10ppm • High Level Alarm: 15ppm and above • Note: Alarm set points can be adjusted to conform to local regulations or company requirements. Generally, the alarm points are set at 10ppm, 15ppm/20ppm. In some areas, they are set at 5ppm and 10ppm. It is critical to know what is required at your location.

  30. HYDROGEN SULPHIDE (H2S) • Alarms:

  31. HYDROGEN SULPHIDE (H2S) • Contingency Plan • Company responsibilities: • Your organization has an exposure control plan which protects you from hazardous hydrogen sulphide. The concentration of hydrogen sulphide which triggers protective action at your facility will, at a minimum, be equal to the current Federal OSHA permissible exposure limit and may be even lower based on the recommendations a more stringent state or local regulation.

  32. HYDROGEN SULPHIDE (H2S) - Contingency Plan • Your responsibilities : • You must know the alarm systems. • You must know where the potential sources for H2S are located. • You must know the wind direction at all times. • Escape by getting upwind to a higher elevation (if possible) from the source. • When escaping, always go cross wind and around the source. • Never go directly upwind (you may be running into the source).

  33. HYDROGEN SULPHIDE (H2S) • In case of any H2S release Emergency Response and Rescue Procedures, These are the basic steps to take if you are in the immediate area of spill, leak & released: • DO NOT PANIC! • Hold your breath • Evacuate in an upwind / uphill direction and away from the gas source • Put on appropriate breathing apparatus

  34. HYDROGEN SULPHIDE (H2S) • In case of any H2S release • Assist anyone in distress. • Move quickly to the upwind “Safe Briefing or Assembly Area” to receive instructions. • Do not return to the area until someone using proper detection equipment has re-evaluated the area and approved it safe to re-enter.

  35. HYDROGEN SULPHIDE (H2S) • What are the engineering controls for hydrogen sulphide? • Use a local exhaust ventilation and enclosure if necessary, to control amount in the air. • It may be necessary to use stringent control measures such as process enclosure to prevent product release into the workplace. • Use non-sparking ventilation systems, approved explosion-proof equipment and safe electrical systems in areas where this product is used and stored.

  36. HYDROGEN SULPHIDE (H2S) • Use a ventilation system separate from other exhaust ventilation systems. • Filter the contaminated air before it is directly exhausted to the outside. • Use leak and fire detection equipment and an automatic fire suppression system.

  37. HYDROGEN SULPHIDE (H2S) • What Personal Protective Equipment (PPE) is needed when working with H2S? • Eye/Face Protection: Wear safety goggles. • Skin Protection: Wear chemical protective clothing e.g. gloves, aprons, boots. In some operations: wear a chemical protective, full-body encapsulating suit. • Self-Contained Breathing Apparatus ( SCBA )

  38. HYDROGEN SULPHIDE (H2S) • Respiratory Protection: • Two Common Types of Breathing Apparatus - Self Contained Breathing Apparatus (SCBA) This type of apparatus provides air from a cylinder worn on the back. A commonly used cylinder will supply air for 30 minutes while the wearer is engaged in heavy physical work. Other cylinders are available for longer or shorter usage. Duration of air supply is dependent on the type of work performed and the individual’s physical condition.

  39. HYDROGEN SULPHIDE (H2S)

  40. Overview 1) Structured Components HYDROGEN SULPHIDE (H2S)

  41. HYDROGEN SULPHIDE (H2S) Special Problems with Respirator Use: - Facial Hair - Contact Lenses - Psychological Disturbances - Miscellaneous Sealing Problems “Not everyone can wear a respirator” Prior to being allowed to use a breathing air equipment, the worker must have medical clearance and have been properly trained to wear respiratory protection.

  42. HYDROGEN SULPHIDE (H2S) - Supplied / cascade Air line Breathing Apparatus • This is a variation of the self-contained breathing apparatus where the back-mounted tank is replaced by a large cylinder connected by a hose line to the pigtail on the BA set. While the supplied air apparatus is lighter to wear, it restricts the user’s movements to the length of the hose. The hose also forces the user to return by the same route taken when entering the area. An escape bottle must be worn with this type of apparatus.

  43. HYDROGEN SULPHIDE (H2S)

  44. HYDROGEN SULPHIDE (H2S) • Recommendations: *Always follow company policies and procedures for escape and rescue. *Before attempting to rescue anyone else, always: - Protect yourself first. Don’t become another victim. - Put on rescue breathing apparatus (30mins. SCBA) before attempting a rescue. *Rescue requires rescue training and practice drills. NEVER attempt a rescue you are not properly trained for. *Use the “Buddy System”. Do not attempt to rescue anyone alone. *You cannot rely on your sense of smell to tell how much H2S is present

  45. HYDROGEN SULPHIDE (H2S) Any Question

  46. HYDROGEN SULPHIDE (H2S) Thank You & Good luck

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