This document provides training on hydrogen sulfide (H2S) safety for personnel visiting oil rig sites. It outlines the hazards of H2S, including its odor, density, flammability, and toxicity. It describes health effects at various exposure levels that can cause irritation, difficulty breathing, and death. The document instructs personnel on safety procedures like maintaining buddy systems, knowing escape routes upwind, and assembling at safe breathing areas. It provides information on different breathing apparatus for escape or work, including EEBDs, SABAs, and SCBA. Personnel are advised not to attempt rescue without proper equipment if H2S is present and to immediately alert authorities if someone becomes unconscious.

1. AL MASAOOD H2S SERVICE
SAFETY DIVISION
DUBAI PETROLEUM
H2S BREATHING APPARATUS TRAINING

2. REMEMBER !
STAY ALERT AT ALL TIMES WHILE
VISITING RIG SITE
AND MAINTAIN BUDDY SYSTEM
WHILE ON WELL SITE

3. Safety Awareness
• HAZARDS OF H2S
• SITES WHERE IT MAY BE FOUND ON LOCATION
• HEALTH HAZARDS OF H2S
• ALARM SIGNALS
• WIND INDICATORS AND DISPERSION
• ROUTES OF EGRESS (ESCAPE)
• METHOD OF RESPONSE
• EMERGENCY ASSEMBLY AREAS
• USES AND DONNING OF PROTECTIVE BREATHING
APPARATUS
• GENERAL SAFETY RULES

4. HAZARDS OF H2S (HYDROGEN SULPHIDE)
• COLORLESS AND TRANSPARENT
• SMELL OF ROTTEN EGG IN LOW CONCENTRATION
• HEAVIER THAN AIR ( SPECIFIC GRAVITY 1.2 )
• VERY FLAMMABLE
• EXPLOSIVE BETWEEN 4.3% LEL AND 46% UEL
• CORROSIVE AND SKIN IRRITANT
• SOLUBLE : IN WATER, oil, sludge, well fluids and
MOLTEN SULFUR .
• PRODUCE SULFUR DIOXIDE (SO2) WHEN BURN
• OVER ALL H2S IS TOXIC AND DEADLY

5. LOCATIONS WHERE H2S CAN BE FOUND
• RIG FLOOR
• SHALE SHAKER
• BELL NIPPLE
• CELLAR
• MUD TANKS AND MUD PUMPS AREA
• CLOSED STORAGE TANKS

6. HEALTH HAZARDS OF H2S
 1 To 10 PPM – Smell of Rotten Eggs
 15 PPM – Detectable Because of the Foul smell
 50 To 100 PPM – Coughing, Slight Irritation to the eyes and loss of smell
 150 To 250 PPM – Loss of the Sense of Smell, Throat and Eye Irritation
 250 To 350 PPM – Irritation of the eye and Respiratory Tract
 350 To 450 PPM – Difficulty in Breathing ,dizziness, Serious Respiratory
Disturbance
 500 To 900 PPM – Respiratory Disturbances Irritation to the eyes and
unconsciousness
 1000 PPM – Unconsciousness, slow pulse, Respiratory paralysis and
DEATH.

7. H2S DETECTIONS & ALARMS
• SENSOR ASSEMBLIES
ARE LOCATED IN HAZARDOUS
AREAS
• AUDIBLE AND VISUAL ALRAMS
• LOW ALARMS ACTIVATE AT
10 PPM WITH FLSHING LIGHT ONLY
AMBER( YELLOW ) FOR H2S and
BLUE FOR ( LEL )
• HIGH ALARMS ACTIVATE AT 15 PPM
WITH FLASHING LIGHT AND
AUDIBLE ALARM ( HORN OR SIREN )

8. PERSONAL MONITORS
• PREFERABLY TO BE WORN
AT BELT LEVEL .
• SOUNDS LOW ALARM IF
H2S REACHES 10PPM WITH
AUDIBLE , VISUAL AND
VIBRATION ALARM .
• TEST UNIT EACH DAY FOR
OPERATION/FUNCTION
NOT A MEASURING DEVICE
JUST A WARNING DEVICE!
WHEN THE ALARM SOUNDS
GET OUT OF THE
LOCATION.

9. ROUTES OF EGRESS (ESCAPE)
• Escape
– Know the escape routes & alarms
– Wear Safety equipment
– Check for wind direction
– Escape crosswind and upwind to Muster Point
– Remember H2s is heavier than air
• Protect
– Wear SCBA
– Always have a back up
– Bring victim out of contaminated area
– Give First-Aid
– REMEMBER THE SHORTEST ROUTE IS NOT THE SAFEST
ROUTE, ALWAYS USE THE SAFEST ROUTE
– AVOID SHORTCUTS

10. EMERGENCY ASSEMBLY AREAS
SAFE BREATHING AREA IS LOCATEDAT 3rd
LEVEL NEAR LIFE BOAT STATIONS
• CONNECT YOUR BREATHING APPARATUS
AIRLINE TO THE NEAREST MANIFOLD WHILE
WAITING FOR FURTHER INSTRUCTION.
• ALWAYS REMEMBER YOUR ASSINGED
STATION, WHERE YOU CAN FIND YOUR NAME
TO AVOID CONFUSION AND FOR US TO EASILY
DISTINGUISHED IF THERE IS MISSING PERSON
ONBOARD.

11. Crew hooked up to their
manifolds
Crew wearing life jacket while
BA in use
COMBINED H2S and ABANDON DRILL

12. Crew getting ready to board the
lifeboat
Crew boarding life boat and secured
with seat belts

13. EEBD ( Emergency Escape Breathing Device )
• APPARATUS HAS 10 OR 15
MINUTES LIFE SPAN
• DESIGNED FOR ESCAPE ONLY /
NOT CERTIFIED AS A WORK
SET .
• TO BE AT ARM LENGTH OR
ATTACHED TO USER
• ONCE ALARM SOUNDS
• UNIT IS ACTIVATED AS
POUCH IS OPENED
• PULL HOOD OVER HEAD AND
ADJUST SEAL AT NECK
• MOVE TO SAFE AREA
USING SAFE ESCAPE ROUTE

14. SABA ( Supplied Airline Breathing Apparatus )
• APPARATUS HAS 10 OR 15
MINUTES LIFE SPAN
CYLINDER
• DESIGNED FOR WORK AND
ESCAPE .
• IT HAS A PIGTAIL AIRLINE
TO CONNECT TO AIRLOOP
CASCADE SYSTEM .
• THE USER FACE MUST BE
CLEAN SHAVEN

15. SELF CONTAINED BREATHING
APPARATUS
• THIRTY MINUTE AIR SUPPLY
• CARRIED ON THE BACK
• USE FOR EITHER ESCAPE,
RESCUE OR RENTRY FOR
LIMITED TIME
• FULL FACE SEAL
• AIR LINE CONNECTION TO
CONENCT TO CASCADE
MANIFOLD .
• MUST BE CLEAN SHAVEN

16. THAT WHEN YOU SEE A PERSON
OR A WORKMATE BECAME UNCONSCIOUS AND SUDDENLY FELL
DOWN
DO NOT ATTEMP OR TRY TO HELP HIM OR ELSE YOU WILL BE
ANOTHER VICTIM IF YOU ARE IN A LOCATION WHERE H2S MAY BE
PRESENT IMMEDIATELY INFORM
THE COMPANY MAN, RIG MANAGER OR THE RESCUE TEAM
GIVE THEM THE EXACT LOCATION OF THE PERSON
SO THEY CAN RESPOND WITH THEIR PROPER SAFETY
EQUIPMENT.
REMINDER DO NOT BE A VICTIM OF H2S
ALWAYS REMEMBER !

17. ANY QUESTION
before we Go to
Hands On
Training ?