Confined Space PP Flashcards
What is confined space?
1) Large enough and configured for a body to enter and perform work.
2) Has limited means of ingress and egress.
3) is not designed for continuous occupancy
OSHA 1910.146
1) Outlines minimum safety/PPE requirements for entries
2) Fequires an industry to designate a confined space rescue team
3) Provides minimum standards for rescue teams
Non-permit Required Confined Space
- No recognized hazards
-If hazards can be isolated, it can be treated Ada non-permited space
Permit required Confined Space
- potential for engulfment
- internal configuration that could entrap a worker
-physical, mechanical hazards
-Athmosphetic hazards
Types of hazards in a confined space
-Athmosphetic
-physical/mechanical
Hazardous Atmosphere are responsible for——- of confined space deaths
80%
Other Permit Required Spaces?
Swimming pools, below grade loading docks, parking garages, trench and excavations.
Phases of Rescue?
Preparation
Assessment
Pre-entry
Entry
Termination
OSHA provides
A decision flow chart
Test the following order
Oxygen
Combustable gases or vapors
Toxic gases or vapors
Hazards?
Atmospheric
Physical/Mechanical
Environmental
Psychological
(All hazards must be identified and controlled or rendered non-hazardous.
Four ways toxins can enter the body?
Absorption
Ingestion
Inhalation
Injection
5 most common gases?
Methane
Carbon Monoxide
Carbon Dioxide
Hydrogen Sulfide
Sulfur dioxide
Phases of Confined Space:
1) Preparation
Equipment evaluation
Hazard analysis
Personel evaluation
Incident management
Phases of Confined Space:
2) Assessment
First operational phase
Information gathering
Establish incident command
Approach assessment
Resource assessment
Documentation
Phases of Confined Space:
3) Pre-Entry Operation
Controlling hazards
making general area safe
rescue area safe
Pre-entry briefing
Phases of Confined Space:
4) Entry and Rescue Operation
Atmospheric monitoring
Coordinate Actions to reduce time
line management
Phases of Confined Space:
5) Termination
All personnel accounted for
time marked
Seal the space
Atmospheric Hazards
Not always easily seen, smelled, heard or felt
Hazardous Atmospheres-
Oxygen Deficiencies causes:
Consumption
Displacement
Absorption
Hazardous Atmospheres-
Oxygen Enrichment causes:
Leaking Oxygen cylinders
A 1% drop in Oxygen may indicate an increase of?
10,000 ppm of another substance or the presence of Oxygen consumption
Oxygen Deficient Atmospheres
19.5% Minimum acceptable oxygen level
15-19% Decreased ability to work strenuously . Impaired coordination. Early symptoms.
12-14% Respiration increases. Poor judgement.
10-12% Respiration increases. Lips turn blue.
8-10%. Mental failure. Fainting; nausea; unconsciusness; vomiting.
6-8%. 8 min-fatal, 6-min- 50% fatal, 4-5 min- possible recovery.
4-6 % Coma in 40 sec….Death
Hazardous Atmospheres
1) Oxygen concentration, below 19.5% or above 23.5%.
2) Flammable vapor, gas, or mist. in excess of 10% of the Lower Explosive Limit (LEL)
3) Toxic, any atmospheric substance in which the dose is greater that the permissible exposure limit
4) Airborne combustible dust which the concentration obscures visual field 5’ or less
5) Any other IDLH condition
Flammability
-Biological
-Normal product Storage
-Maintenance procedures
-Inappropriate Presence
-Airborne Combustible Dust
Toxicity
-Natural Occurring
-Normal Product Storage
-Inappropriate Presence
Remember! Atmospheric conditions can change without a warning.
-Disturbance of the air flow
-Humidity/Temperature
-Decrease in O2
-Maintenance Ops
-Disturbance of residue
-Dostibamce pf gas stratification
Physical/Mechanical
-Electrical
-Mechanical
-Elevation Differences
-Hazardous Materials
-Noise
-Temperature Extremes
Psychological Hazard
-Claustrophobia
-Fatigue
-Anxiety
Confined Space Rescues should?
Always be treated as a Permitted confined space entry.
F.A.I.L.U.R.E
Failure to understand or to underestimate the environment
Additional medical implication not consider
Inadequate rescue skills
Lack of teamwork
Underestimating logistical needs
Rescue vs Recovery
Equipment not mastered
Nearly ___% of all confined space deaths are would be rescuers
60%
Preparation
-Dep. works with Special ops to make time for training and equipment needs
-Special ops BC works that equipment functions correctly and safely
-Station level- replans of hazard buildings or vaults
-Water authority pre-plans maps (Hazmat 40 has complete set)