Title: This Presentation Developed By Drew R. Smith
1This Presentation Developed ByDrew R. Smith
- This presentation may be modified or reproduced
by individual fire departments or training
organizations provided it is not used to generate
revenue or in any commercial manner.
2CONFINED SPACE TRENCH RESCUE AWARENESS
3CONFINED SPACE
4OBJECTIVES
- As presented in this class, identify
- Ten hidden hazards associated with confined space
rescue - The requirements imposed by the Illinois
department of labor for persons involved in
rescue operations
5- How the national fire protection association,
Illinois department of labor, occupational safety
and health administration, ANSI and NIOSH all
interface - The methods of victim and rescuer protection
- Required entry and retrieval systems
- Air quality monitoring and control systems
6- Isolation techniques
- The initial command operations at the scene of a
confined space rescue - The initial tasks of the first-in company at the
scene of a confined space rescue
7A Confined Space means a space that
- Is large enough and so configured that an
employee can bodily enter and perform assigned
work and - Has limited or restricted means of entry and
- Is not designed for continuous employee occupancy
8Permit Required Confined Space (PRCS)
- Is a confined space that has one or more of the
following characteristics - Contains, or has a potential to contain, a
hazardous atmosphere - Contains a material that has a potential for
engulfing an entrant
9- Has an internal configuration such that an
entrant could be trapped or asphyxiated by
inwardly converging walls or by a floor which
slopes and tapers to a smaller cross section - Contains any other recognized serious safety or
health hazard
10Non-Permit Confined Space
- Is a space that does not contain or, with respect
to atmospheric hazards, have the potential to
contain any hazard capable of causing death or
serious physical harm
11Types Of Confined Spaces
- Sewers
- Silos
- Vats
- Ventilation and exhaust ducts
- Boilers
- Degreasers
- Pipelines
- Underground utility vaults
- Tunnels
- Railroad tank cars
12Example of local confined space locations
13Silos -Industrial or Agricultural
14Manholes- Sanitary or Storm
15Rail CarsLiquid Tank or Dry Bulk
16Industrial Storage Tanks
17Reasons for entering confined spaces
- Cleaning
- Inspections
- Maintenance
- Training
- Rescue
18Confined Space Requirements are detailed in OSHA
Standards29 CFR 1910.146Permit-Required
Confined Spaces for General Industry - Final
Rule 29 CFR 1910.147Control of Hazardous
Energy(Lock-out/Tag-out)
19(No Transcript)
20Definitionsto aid in understanding the OSHA
regulations...
21Qualified (Competent) Person
- A person designated by the Employer in writing,
as capable (by education and /or specialized
training) of anticipating, recognizing and
evaluating employee exposure to hazardous
substances or other unsafe conditions in a
Confined Space - This person shall be capable of specifying
necessary control and/or protective action to
insure worker safety.
22Attendant
- A trained individual, stationed outside the
Confined Space area who monitors authorized
entrants working in Permit-Required Confined
Spaces
23Authorized Entrant
- A trained individual who is authorized to enter a
Permit-Required Confined Space area to perform
work
24Entry Supervisor
- A trained individual who verifies that all
requirements for Permit-Required Confined Space
Entry have been met, authorizing and overseeing
entry operations, and for terminating entries
25For every entry into a PRCS you will need
- At least one attendant
- At least one entrant
- An entry supervisor
- (although the entry supervisor does not need to
remain on site)
26Hazardous Atmosphere
- An atmosphere that may expose employees to the
risk of death, incapacitation, impairment of
ability to self-rescue (that is, escape unaided
from a permit space), injury or acute illness
from one or more of the following
27- Flammable gas, vapor, or mist in excess of 10 of
its Lower Flammable Limits (LFL) - Airborne combustible dust at a concentration that
meets or exceeds its (LFL) - Oxygen concentration below 19.5 or above 23.5
28- Concentration of any substance published in
Subpart G, Occupational Health and Environmental
Control, or Subpart Z, Toxic and Hazardous
Substances, in access of its dose or Permissible
Exposure Limits (PEL) - Note A concentration of any substance that is
capable of causing death, incapacitation or
impairment of ability to self-rescue, injury, or
acute illness due to health effects is not
covered by this provision
29- Any other atmospheric condition that is
Immediately Dangerous to Life and Health (IDLH)
30Engulfment
- The surrounding and effective capture of a person
by a liquid or finely divided (flowable) solid
substance that can be aspirated to cause death by
filling or plugging the respiratory system, or
that can exert enough force on the body to cause
death by strangulation, constriction, or crushing
31Immediately Dangerous to Life and Health (IDLH)
Any condition that
- Poses an immediate or delayed threat to life
- Would cause irreversible adverse health effects
- Would interfere with an individuals ability to
escape unaided from a permit space
32Oxygen Deficient Atmosphere
- An atmosphere containing less than 19.5 percent
by oxygen by volume
33Oxygen Enriched Atmospheres
- An atmosphere containing more than 23.5 oxygen
by volume
34Inerting
- Displacement of the atmosphere in a permit space
by a noncombustible gas (such as nitrogen) to
such an extent that the resulting atmosphere is
noncombustible
35Isolation
- The process by which a permit required confined
space is removed from service and completely
protected against the release of energy and/or
material into the confined space by such means
as - Blanking and bleeding
- Removing sections of lines, pipes or ducts
- Double block and bleed
- Lock-out, tag-out, or tryout of all sources of
energy - Blocking or disconnecting of all linkages
36Retrieval System
- The equipment including a retrieval line, class
III harness, wristlets, if appropriate, and
lifting device) used for non-entry rescue of
workers from a permit-required confined space
37Acceptable Entry Conditions
- The condition that must exist in a confined space
to allow entry and ensure that employees involved
with a permit-required confined space entry can
work within the confined space safely
38Entry
- The action by which a person passes through an
opening into a permit required confined space,
and includes ensuing work activities in that
space - Considered to have occurred as soon as any part
of the entrants body breaks the plane of an
opening into the space
39Entry Permit
- The written or printed document provided by the
Authority Having Jurisdiction (AHJ) to allow and
control entry to a permit space
40A permit is simply a checklist
- Not issued by the Federal, State or Local
government - Minimum contents set by OSHA
- Many formats
41Content of each permit is based on the AHJs
identification and evaluation of each hazard of
that permit space, or class of spaces, and all
procedures the AHJs requires for protecting
entrants from those hazards during entry.
- Each permit contains the information specified in
paragraph (f), ("ENTRY PERMIT") of the standard
42Prohibited Condition
- Any condition in a permit space that is not
allowed by the permit during the period when
entry is authorized
43Requirements
44The Employer will decide if the workplace
contains Permit Required Confined Spaces (PRCS)
45If workplace contains Permit Required Confined
Spaces, the Employer must inform employees of
their existence, location and dangers
46If the Employer decides employees will enter
permit spaces, the Employer shall develop and
implement a written entry program
47The Employer may use alternate entry procedures
provided certain conditions and requirements are
met
48When there are changes in use of configuration of
a non-permit confined space that might increase
the hazards to entrants, the Employer shall, if
necessary, reclassify as a permit space
49If there are no actual or potential atmospheric
hazards and if all hazards within the space are
eliminated without entry, space may be
reclassified for as long as the non-atmospheric
hazards remain eliminated
50If entry into a confined space is required to
eliminate hazards, it shall be according to
regulations and the confined space may be
reclassified for as long as the hazards remain
eliminated
51The Entry Supervisor shall certify in writing
that all hazards in Permit Required Confined
Space have been eliminated and make this document
available to each entrant
52If hazards arise in Alternate Entry Permit Space
or Non-Permitted Space, employees shall exit the
Confined Space and the Entry Supervisor shall
determine whether to reclassify the Confined Space
53When the Employer arranges for contractor to
perform Permit Required Confined Space entry
work, the Employer shall
54- Inform contractor of the Employer's Permit
Required Confined Space Entry Program - Apprise contractor of particular PRCS hazards,
precautions and procedures implemented for
protection of employees in or near the Permitted
Spaces - Coordinate entry operations with contractor when
both will be working in or near Permitted Spaces
and debrief contractor after entries
55Contractors shall comply with the Employers
Permit Required Confined Space Entry Program
during combined employee entries and coordinate
multiple entry operations
56Requirements forAlternate Entry
57- Any condition making it unsafe to remove an
entrance cover shall be eliminated before the
cover is removed - When entrance covers are removed, opening shall
be promptly and effectively protected - Before entry, internal atmosphere shall be tested
with a calibrated direct-reading instrument, for
the following conditions in the order listed
58Oxygen content
Flammable gases and vapors
- Potential toxic air contaminants
59A confined space entered using Alternate Entry
Procedures may not have any hazard until after
the space is vacated
60Major utility companies often use alternate entry
procedures
61Procedures for using continuous forced air
ventilation
- Entry will not be permitted until hazardous
atmosphere is eliminated. - Ventilation shall be directed to immediate areas
where employees are or will be present and shall
continue until employees have left space. - Air supply shall be from a clean source and may
not increase hazards in space. - Atmosphere within space shall be continuously
tested.
62Procedures when a hazardous atmosphere is
detected during entry
- Each employee shall leave the confined space
immediately - Permit Space shall be evaluated to determine how
hazardous atmosphere developed - Measures shall be taken to protect employees from
the hazardous atmosphere before a subsequent entry
63- The Entry Supervisor shall certify in writing
that the confined space is safe for entry and
that all of the above requirements have been met - The Entry Permit will be available to each
employee before entry
64Permit Entry Confined Space Procedure
- Use of the Permit Entry Confined Space Program
- Prevents unauthorized entry
- Identifies and evaluates hazards before entry
65- Establish safe practices, such as
- Isolation
- Purging
- Inerting
- Ventilation
- Barricades
- Lock out/tag out
66- Provide and maintain equipment necessary for safe
entry, including testing and monitoring,
ventilation, communications, personal protection,
lighting, barriers, ingress and egress, and rescue
67- Test Permit Space and document results
- Maintain acceptable conditions in Permit Space
- Provide at least one attendant outside the
Permitted Space for the duration of entry
operations
68- Identify duties of each employee and provide
training - Establish a written system for preparation,
issuance, use and cancellation of Entry Permits - Coordinate entry operations during multiple
employer entries - Review entire program at least annually, unless
previously reviewed at conclusion of a specific
entry
69Entry Permit System
- The Entry Supervisor, through the permit system,
shall ensure - All PRCS Entry Permits are issued and posted at
the entry portal - That the duration of the Permit does not exceed
the time required to complete the task - That all PRCS Permits are appropriately canceled
in a timely manner
70The Entry Permit must provide the following
information
- Permit Space(s) to be entered
- Purpose of entry
- Date and authorized duration of entry permit
- Authorized entrants
- Attendants
- Entry Supervisors, by printed name and signature
71- Hazards of the permit space
- Measures required to control hazards of the space
- Acceptable entry conditions
- Test results with signature or initials of
tester(s) - Rescue services, and the means to summon them
72- Communication procedures and equipment are on
site - All special equipment and procedures, including
personal protective equipment and rescue
equipment - Any other information needed to ensure safe entry
- Any additional permits needed for welding,
cutting, and brazing. Employee's duties
73Sample Permit for Rescue
74Personnel Duties
75Authorized entrants
- Know the hazards that may be faced during entry,
including mode, signs or symptoms, and
consequences of exposure - Properly use all required equipment
- Communicate with attendant as necessary to enable
attendant to monitor status and to alert entrants
of need to evacuate
76- Alert attendant whenever any warning sign or
symptom of exposure to a dangerous situation or a
prohibited condition is detected - Entrant recognizes any warning sign or symptom of
exposure to a dangerous situation
77Entrant exits from the permit space as quickly as
possible whenever
- Order to evacuate is given by attendant or entry
supervisor - Entrant detects a prohibited condition
- Entrant recognizes any warning sign or symptom of
exposure to a dangerous situation - Entrant detects a prohibited condition
- Evacuation alarm is activated
78ALL RESCUERS MUST BE TRAINED TO THE ENTRANT LEVEL
79Authorized attendants
80- Know the hazards that may be faced during entry
- Know the possible behavioral effects of hazards
- Continuously maintains accurate count of entrants
- Remain outside of permit space during entry
operations until relieved by another attendant
81- Communicate with entrants as necessary to monitor
status and alert of need to evacuate space - Monitor activities inside and outside the space
to determine if it is safe for entrants to remain
in space and order evacuation when necessary - Summon rescue and emergency services when
emergency exit from permit space is necessary
82- Take the following actions when unauthorized
persons approach or enter a permit space while
entry is underway
- Warns them to stay away
- Advises them to exit immediately if they have
entered - Informs authorized entrants and entry supervisor
if - unauthorized persons enter space
- Perform non-entry rescues
- Perform no duties that might interfere with
attendants priamry duty to monitor and protect
authorized entrants
83Entry supervisors
- Know the hazards that may be faced during entry
- Verify that acceptable conditions for entry exist
- Terminate entry when operations are completed or
a prohibited condition arises - Verify rescue services are available
84- Remove unauthorized persons who enter or attempt
to enter permit space during operations - Determine, whenever responsible and at
appropriate intervals, that acceptable entry
conditions are maintained
85Rescue Services
- Ability to restore an airway and circulation to
the victim in 3 to 4 minutes
NOTE The time is for restoration of airway and
circulation, not simply arriving on the scene.
86On-site team
- Must be properly trained in entry procedures,
rescue procedures and PPE equipment - Permit space rescues must be practiced at least
annually from similarly configured spaces - Must be trained in basic first-aid and CPR, and
have at least one member currently certified
87Off-site
- Inform rescue service of hazards they may
confront - Provide rescue service with access to all permit
spaces so they can develop appropriate rescue
plans and practice rescue operations - If injured entrant is exposed to substance with a
required MSDS, it shall be made available to
medical facility treating entrant
88HazardsThe Incident itself
- Configurations
- Locations
- Height
- Depth
89- Difficult rescues can be stationary or mobile
- May be above grade, below grade or at grade level
- Can narrow at the bottom and/or the top
- Can be in an area difficult to get equipment to
90Containment hazards (Engulfment)
- Coal, sand, grain, pellets, you can sink like
quicksand or fall 20' threw a hole - Water - you can drown
91Biological / health hazards
- MSD plants and sewers (Human waste)
- Hepatitis B
- Infection
- Storm sewers and Contaminated water
- Rats and Insects
- Plants that work with biological specimens and
hazardous materials
92Mechanical hazards
- Electrical, augers, backhoes, welding equipment
- Difficulty with isolation - the process where the
space is removed from service by - Lock out, Tag out procedures, preferably at
disconnect switches remote from the equipment
93- Removing belt and chain drives, mechanical
linkages when possible - A computer from a remote location can turn on
equipment or release a product - Blanking and bleeding - pneumatic and hydraulic
lines - Securing - mechanical moving parts within a
confined space with chains, bars, chocks, blocks
and other devices - Double block and bleed
94Lock-Out/Tag-Out Kit
- Padlocks
- Hasps tags
- Plug valve covers
- Chain
- Electrical Tester
95(No Transcript)
96Padlocks Hasps/Tags
97Covers Limiting Devices
98Locking Out a Plug
99Lock-Out Tag-Out of Electrical Disconnect
Switch
100Use of limiting device on quarter-turn valve
101Use of chain to limit operation
102When Lock-Out is not possible
103- Dissipation of
- Stored energy
- Static electricity
104Weather
- The environment for time of season and day is
extremely influencing - Examples
- Rain
- Snow
- Heat
- Cold
- Low and high humidity
105Air Contaminants present the most problems and
hazards
106Terms Related to Toxicity
107TLV - TWA
- Threshold Limit Value - Time Weighted Average
- The amount of exposure a person can receive in an
eight hour day, forty hours a week
108EEL or STEL
- Emergency Exposure Limits or Short Term Exposure
Limit - The amount of exposure a person can receive in
fifteen minutes during a rescue
109IDLH
- Immediately Deadly to Life and Health
- The amount of an exposure a person receives that
is immediately life threatening
110LEL - UEL
- Lower Explosive Limits and Upper Explosive Limits
- Between this range, combustible gases can burn
and explode. - Above the UEL the concentration is too rich and
below the LEL the concentration is too lean
111Recognize overexposure to yourself and co-workers
- Headache
- Dizziness
- Nausea
- Smell or rotten eggs
- Euphoria
112Oxygen ranges
- 19.5 to 23.5
- Can be displaced oxygen in a space from decaying
plants, rust, introduction of another gas, inert
gas cleansing and more
113(No Transcript)
114Carbon Monoxide displaces oxygen in the human
body, even when plenty of good air is available.
(35 ppm TLV.)
- Odorless, colorless, tasteless gas
115(No Transcript)
116Hydrogen Sulfide
- Extremely poisonous and flammable
- 10 ppm is the TLV
- IDLH is 300 ppm
- Flammable range is 10 of the LEL
- Has an odor of rotten eggs and immediately
deadens your senses - If you smell it, get out
117(No Transcript)
118Explosive gases - flammable hydrocarbons
- Methane
- Gasoline
- Acetylene
- Carbon monoxide
119(No Transcript)
120Combustible dusts
121Electrical and otherenergy sources
122Poor lightingPoor footing(slips, falls)
123Improper(or a lack of)training
124Retrieval systems or methods shall be used
whenever entry is made, unless the retrieval
equipment would increase overall risk of entry or
would not be of value
125Each entrant shall use chest or full body
harness, with retrieval line attached at the
center of their back near shoulder level, or
above their head
126Wristlets may be used in lieu of the chest or
full body harness if employer can show use of
chest or body harness is not feasible or creates
a greater hazard and that use of wristlets is
safest and most effective alternative
127Other end of retrieval line shall be attached to
a mechanical device or fixed point outside permit
space for immediate use
128Mechanical device shall be used to retrieve
personnel from vertical type permit spaces more
than 5 feet deep hazards associated with Confined
Spaces
129Protective Actions
130Monitor use
- Time needed to
- intake atmosphere
- Electric pump 1 second per foot of tubing
- Hand bulb 3 pumps per foot of tubing
131- Time needed for monitor to evaluate
- If you move too fast you can walk into or through
a hazard - Test in 4 foot intervals for potential
stratification of gases - Test 4 feet in all directions in front of you
132Your test equipment must monitor what youre
searching for
133- What various scales on the meter mean
- LEL How close you are to LEL
- Percentage ()
- PPM 1 PPM .0001
134Types of monitors
- Direct reading insturments
- Gas analysers
- Explosive meters
- Gas detectors
- Particulate detectors
- Drager (Colormetric) tubes
135Calibration per manufacturer's recommendations
136Bump testing
137Fresh air calibration
138Maintenance
- Department procedures
- Manufacturer's recommendations
139SHOULD USE TWO MONITORS
- When your alarm goes off - believe it
140Testing must be continuous for the outside and
inside of the Confined Space
- This makes sure that old problems don't reoccur
and new ones don't arise
141(No Transcript)
142Use meter to check air quality.
- Monitor air outside space first.
- Monitor air at confined space entry point second.
- Monitor air inside entry point third.
- Monitor air at half-way point (half-way between
entry point and farthest point inside confined
space) fourth. - Monitor air at farthest point (where victim is
located) last.
143Use of ventilation to control the situation
144Definition
- The planned and systematic release and removal of
gases and the replacement of these gases with a
supply of fresh air - The same objective as at a structure fire
145Consider characteristics of gases
- Vapor densities
- Stratification
146Reasons for ventilation
- When the type of construction is unsuitable for
natural ventilation - To remove dangerous gases
- To reduce LEL's to safe levels
- To produce a work environment with a temperature
conducive to human habitation
147When to ventilate
- Prior to and during entry of confined space
148Where to ventilate
- In the area where the confined space is occupied
- During a rescue, the ventilation hose should be
directed at the victims face when possible
149Ventilation must be continuous
150Ventilation equipment should be intrinsically
safe if dealing with flammable gases
151Tubing should be sized so escape air can be
released around it from the opening
152Use upwind
153Area outside the Confined Space should be clear
for dangerous expelled gases
154Make sure you're not purging your Confined Space
with contaminated air from the outside
- Car exhaust, small engine exhaust
155An exhaust mode can draw flammable gases into
your equipment and BOOM!
Always operate the ventilator in the positive
pressure mode
156How long to ventilate?
- Until the confined space is free of toxic gases
and the LEL is at a safe level - MONITOR
- Minimum of 5 minutes or
- 6 air exchanges in the space
- Blower should be operated for one minute prior to
putting hose in confined space
157Blower considerations
- CFM (usually stamped on blower)
- The length of blower hose and the number of bends
will affect the CFM achieved - Tubing in hole should not obstruct exhaust gases,
should allow one person to enter and exit - The blower should not be closer than 5 feet to
confined space opening
158Placement of blower hose
- In a vertical confined space with a 90 degree
bend, blow against the wall, at least one foot
below the surface, and two feet above the floor - In a horizontal confined space lay hose on the
floor with the end of the hose at least two feet
from the end wall. Be sure blower is out of the
path of the purged air
159(No Transcript)
160(No Transcript)
161Blow Air Across Manhole
162(No Transcript)
163Personal protective equipment
- Components
- Hard hats
- Lights
- Radios
- Boots
- Eye and Hearing protection
- Splash protection
- SCBA
- Turn-outs (fire gear)
- Hazardous materials protection
164Does equipment need to be intrinsically safe?Is
yours?
165SCBA and Supplied Air Units
- Compatible air system with supplied air systems
- Supplied air system
- 10 minute escape bottle recommended
- One person with the main system
- Keep short distances for possible kinking of hose
- 300 foot maximum
166Standard SCBA enables us greater freedom of
movement but air supply is limited
- Must be positive pressure
167Physicals are required yearly for all BA users
168Full body harnesses,Life lines, Tripods,Descent
Retrieval Systems all need to be APPROVED
169Tri-Pod Retrevial Systems
Commercial
- Make-Shift
- Little Giant Ladder (300 SWL)
- A-frame using two ladders
170Life Line Retrieval Systems
- Block Tackle Set-up
- Industrial Hand Winch
- 20 mule Team
171(No Transcript)
172Tools/equipment
- Non-sparking
- Air driven tools, intrinsically safe (drills,
saws, cleaning equipment)
173Electrical equipment
- Electrical is a source of ignition
- Should be on surge protectors and/or ground
faults - Needs to be grounded
- Should be low voltage
174Methods of communication
175Radios
- Won't turn corners
- Difficulty in thick cement structures
- Difficulty underground
- May need to be intrinsically safe
176Life LineOATH
- O - OK, 1 pull of rope
- A - Advance line, 2 pulls of rope
- T - Take up slake, 3 pulls of rope
- H - HELP! 4 or more pulls of rope
177 178Identification /accountability system
- Name of attendant
- Name and number of entrants
- Time in and out of confined space
- Time on and off air system
179Record keeping Types of records
- Training
- Permits
- Incidents
- Medical surveillance - can use OSHA's Hazardous
Materials Regulations for this - Equipment maintenance
180Record retention
- Must be kept for a minimum of one year
- Exposure records must be kept for 40 years or for
30 years after employment termination
181THE WORK DAY ISN'T OVER UNTIL THE PAPERWORK IS
COMPLETE
182Fire/RescueEmegencyResponseProcedures
183Initial Operations
- Activate response plan
- Summon MABAS Special Rescue Team confirming
incident exists - Institute Incident Command System
- Prevent unauthorized personnel from entering area
- Prepare permit or S.O.P.
184- Set-up zones
- Cold
- Warm
- Hot
185- Hot Operations zone is within 15 feet of
victim. No person allowed except rescuers
approved by operations officer. - Warm Control zone is within 50 feet of
victim. All rescuer staging occurs in this area.
No apparatus allowed in control zone. - Cold Exclusion zone is 150 feet of victim.
Apparatus and media are staged in this area.
Public is held outside exclusion zone.
186Perimeters designated by barricade tape or rope
and police guard
Zone distances may be adjusted as appropriate or
circumstances allow
187- Visually check for hazards
- Monitor air quality with meter
- Ventilate confined space
- Set-up tri-pod or other fixed point
- Set-up retrieval system and tag lines
- Have all entrants and back-up personnel in full
body harnesses - Provide adequate lighting
- Establish communications methods
188- Personal protective equipment is worn and used
Helmets, SCBA, etc. - Provide for rescue services (back-up)
- Protect portal
- Post permit or S.O.P. at portal
- All entrants or rescuers are trained to compete
assignment - Make entry, perform assigned work
- Cancel permit
189Planning
- Establish a confined space training program
- Make personnel aware of hazards
- Train personnel in tasks that your department can
perform safely - Preplan a confined space rescue response
- Develop a procedure for first in companies
- Develop a response plan with local area fire
departments and industry
190In Review...
191A Confined Space means a space that
- Is large enough and so configured that an
employee can __________ and perform __________
and - Has limited or restricted means of __________
and - Is not designed for _________________________
192Permit Required Confined Space (PRCS)
- A confined space that has one or more of the
following characteristics - Contains, or has a potential to contain, a
____________________ - Contains a material that has a potential for
__________________
193- Has an internal configuration such that an
entrant could be trapped or asphyxiated by
________________________________________________ - Contains any other recognized ____________________
___
194Types Of Confined Spaces
195Reasons for entering confined spaces
196Confined Space Requirements are detailed in OSHA
Standards29 CFR 1910.146Permit-Required
Confined Spaces for General Industry - Final
Rule 29 CFR 1910.147Control of Hazardous
Energy(Lock-out/Tag-out)
197Definitions
198Permit Required Confined Space (PRCS)
199Acceptable Entry Conditions
200EntryWhat constitutes an entry?
201Contractors shall comply with the Employers
Permit Required Confined Space Entry Program
202Requirements forAlternate Entry
203Procedures when a hazardous atmosphere is
detected during entry
204Permit Entry Confined Space Procedure
205Entry Permit System
206A permit is simply a checklist
207The Entry Permit must provide what information?
208Roles
- Authorized entrants
- ALL RESCUERS MUST BE TRAINED TO THE ENTRANT LEVEL
- Authorized attendants
- Entry supervisors
209Rescue Services
210Hazards
- Electrical
- Mechanical hazards
- Stored energy
- Static electricity
- Containment (Engulfment)
- Biological / health
- Weather
211Air Contaminants present the most problems and
hazards
212Terms
- TLV - TWA
- EEL or STEL
- IDLH
- LEL - UEL
- Recognize overexposure to yourself and your
co-workers
213Ranges
- Oxygen
- Carbon Monoxide
- Hydrogen Sulfide
- Explosive gases - flammable hydrocarbons
214Other hazards
- Combustible dusts
- Electrical and otherenergy sources
- Poor lighting poor footing (slips, falls)
- Improper training
215Retrieval systems/methods shall be used whenever
entry is made
- Entrant shall use chest or full body harness
- Wristlets may be used
- Use mechanical device with vertical type permit
spaces more than 5 feet deep
216Monitor use
- Your test equipment must monitor what youre
searching for - Types of monitors
- Fresh air calibration
- Maintenance
217Use of ventilation to control the situation
- Consider characteristics of gases
- Reasons for
- When
- Where
- How long
218Personal protective equipment
- SCBA and Supplied Air Units
- Approved full body harness, life line, tripods,
descent and retrieval systems - Clothing
- Helmets, gloves, eyewear
219Methods of communication
- Radios
- Life Line
- OATH
- Hand signals
- Sight
- Voice
220Does equipment need to be intrinsically safe?Is
yours?
221Record retention
- Must be kept for a minimum of _____ year
- Exposure records must be kept for _____ years
after employment termination
222Procedures for Initial Operations
- Activate response plan
- Summon MABAS Special Rescue Team confirming
incident exists - Institute Incident Command System
- Prevent unauthorized personnel from entering area
- Set up control zones Hot, Warm, Cold
- Prepare permit or S.O.P.
223- Visually check for hazards
- Monitor air quality with meter
- Ventilate confined space
- Set-up tri-pod or other fixed point
- Set-up retrieval system and tag lines
- Have all entrants and back-up personnel in full
body harnesses - Provide adequate lighting
- Establish communications methods
224- Personal protective equipment is worn and used
Helmets, SCBA, etc. - Provide for rescue services (back-up)
- Protect portal
- Post permit or S.O.P. at portal
- All entrants or rescuers are trained to compete
assignment - Make entry, perform assigned work
- Cancel permit
225The End