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Confined Space Entry

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Periodically test atmosphere during entry. Permit-required ... must know first aid and CPR. must practice at least once every year. Resources Available to you ... – PowerPoint PPT presentation

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Title: Confined Space Entry


1
(No Transcript)
2
Confined Space Entry
  • State Safety Industrial
  • Hygiene Unit
  • Minnesota Department of
  • Employee Relations

3
Discussion Objectives
  • Differentiate between permit-required and
    non-permit required confined spaces
  • Understand acceptable entry conditions
  • Identify required elements of a written confined
    space entry program
  • Identify elements of a entry permit
  • Identify entrant, attendant, and supervisor
    responsibilities

4
History of Confined Space Entry Regulations in
Minnesota
  • On State Level
  • Adopted Feb. 1988
  • Included construction agriculture industry
  • Private public sector employees
  • On Federal Level
  • 29 CFR 1910.146
  • Adopted April 1993
  • Does not cover construction industry

State OSHA programs required to adopt standards
as stringent or more stringent than federal
standards.
Minnesota had to do something.
5
What Minnesota did
  • Adopted revised federal general industry standard
    29 CFR 1910.146 in May 1999
  • covers general industry exposure only
  • Maintained state confined space standard
    5207.0300 for construction industry exposure
  • construction definition does not include standard
    operations and maintenance activities

6
Definitions
Confined Space
  • is large enough and so configured that an
    employee can bodily enter and perform assigned
    work and
  • has limited or restricted means for entry or
    exit and
  • is not designed for continuous employee occupancy

7
Definitions
Possible confined spaces
  • Sewer Septic tank
  • Sewage digester Pumping/lift station
  • Storage tank Silo
  • Vat Duct
  • Utility vault Utility tunnel
  • Boiler Pipeline
  • Pit Sump
  • Trench Reaction vessel

8
Definitions
Entry
  • The action by which a person passes through an
    opening into a permit-required confined space.
    Entry includes ensuing work activities in that
    space and is considered to have occurred as soon
    as any part of the entrants body breaks the
    plane of an opening into the space.

9
Definitions
Hazardous Atmosphere
  • (1) Flammable gas, vapor, or mist in excess of 10
    percent of its lower flammable limit (LFL)
  • (2) Airborne combustible dust at a concentration
    that meets or exceeds its LFL
  • (3) Atmospheric oxygen concentration below 19.5
    percent or above 23.5 percent
  • (4) Atmospheric concentration of any substance in
    excess of permissible exposure limit
  • (5) Any other atmospheric condition that is
    immediately dangerous to life or health.

10
Definitions
  • Permit-required confined space means a confined
    space that has one or more of the following
    characteristics
  • (1) Contains or has a potential to contain a
    hazardous atmosphere
  • (2) Contains a material that has the potential
    for engulfing an entrant
  • (3) Has an internal configuration such that an
    entrant could be trapped or asphyxiated by
    inwardly converging walls.
  • (4) Contains any other recognized serious safety
    or health hazard.

11
Definitions
  • Non-permit confined space
  • means a confined 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.

12
Definitions
  • Testing
  • means the process by which the hazards that may
    confront entrants of a permit space are
    identified and evaluated. Testing includes
    specifying the tests that are to be performed in
    the permit space.

NOTE Testing enables employers both to devise
and implement adequate control measures for the
protection of authorized entrants and to
determine if acceptable entry conditions are
present immediately prior to, and during, entry
13
Employer Responsibilities
  • Evaluate work place for confined spaces
  • Label spaces
  • Decide if spaces will be entered by employees
  • Develop written program if entering
    permit-required spaces

14
Evaluating Workplaces
  • Types of Confined Spaces
  • Non-permit
  • does not have the potential to contain
    hazard capable of causing death or serious
    physical harm

ANY
  • Special (atmospheric only)
  • contains only atmospheric hazards that can be
    controlled with forced ventilation
  • Permit-required
  • potential for a hazardous atmosphere
  • potential for engulfing entrant
  • inwardly converging configuration
  • other recognized serious safety issues

15
Evaluating Workplaces
  • Tools available to assist in determination of
    space type
  • Decision flow chart
  • OSHA Confined spaces advisor software

16
Non-permit confined space
  • Must consider whether other hazards exist in the
    space
  • hazardous energy (lock out/tag out)
  • temperature
  • fall
  • Think about situation out of the confined space
    to determine if hazardous
  • Examples?

17
Non-permit confined space
  • Changes to the space
  • MUST reevaluate the space to determine
    appropriate classification
  • Also provisions for reclassifying a
    permit-required space to non-permit space
  • forced air ventilation cant be means of
    eliminating hazard for purposes of reclassifying
    to non-permit

18
Special (atmospheric only) confined space
  • Continuous forced air ventilation required
  • what makes ventilation effective?
  • Must test atmosphere prior to entry
  • oxygen
  • combustible gases
  • toxic air contaminants
  • CALIBRATED direct reading instrument
  • Periodically test atmosphere during entry

19
Permit-required confined space
  • Requires employer to develop comprehensive
    written confined space entry program
  • Must be appropriately labeled
  • Must coordinate entry with host employers

20
Evaluate the space 1
  • Municipal meter and sampling pit
  • 6x10 concrete structure with sump pit and water
    piping
  • fixed 10 vertical
    ladder
  • square 2x3
    entrance hatch

21
Evaluate the space 1
  • Municipal meter pit
  • 6x10 concrete structure with sump pit and water
    piping
  • fixed 10 vertical ladder
  • square 2x3 entrance hatch
  • Confined space with atmospheric only hazards
  • What are possible atmospheric hazards?
  • Lack of O2
  • Combustible gas
  • Toxics?

22
Evaluate the space 2
  • well pit
  • concrete block walls with dirt floor
  • 12 foot vertical drop
  • access by step ladder with with 7 foot drop
    to top of ladder
  • square 2x3
    entrance hatch
  • exposed electrical wiring

23
Evaluate the space 2
  • well pit
  • concrete block walls with dirt floor
  • step ladder
  • square 2x3 entrance hatch
  • exposed electrical wiring
  • Permit-required confined space
  • What are the hazards?
  • Potential atmospheric
  • Fall hazard
  • Electrical hazard

24
Elements of written permit-require confined space
program
  • Measures that prevent unauthorized entry
  • Evaluate hazards of permit spaces
  • Procedures developed for safe entry
  • Evaluate space during entry operations
  • Provide attendant
  • Provide necessary equipment
  • What is necessary equipment???

25
Necessary Equipment
Special (atmospheric)
  • Gas meter
  • Ventilator and flex duct

Permit-required
  • Communication system
  • Retrieval system
  • Full Body harness
  • SCBA

26
Written permit-require confined space program
(cont.)
  • Identify responsibilities of employees
    involved with entry
  • Procedure developed to summon rescue and
    emergency procedures
  • Develop permit system
  • Procedures for coordinating with other employers
  • Procedures for review of program

27
Permit system requirements
  • Permit must be completed prior to entry
  • Must be signed by entry supervisor
  • Permit should be posted at entry portal
  • Duration of the permit identified and must not
    exceed time necessary for task
  • Provisions for canceling the permit
  • Permits must be retained for 1 year

28
Permit Requirements (sample included)
  • I.D. of space to be entered
  • Purpose of entry
  • Date entry authorized
  • Authorized entrant
  • Attendant
  • Supervisor
  • Known hazards

29
Permit requirements
  • Methods to control space
  • Acceptable entry conditions
  • Initial and periodic test results
  • Emergency procedures
  • Communication procedures
  • Equipment to be used

30
Employee training
  • Initial training before entry or assistance with
    entry
  • When there is a change in procedure
  • When employer believes it is necessary
  • Employer must certify training was accomplished
    by documenting employees names, training dates,
    and trainers signature

31
Duties of Entrant
  • Know the hazards
  • Use PPE properly
  • Communicate with attendant as necessary
  • Exit space when there is a problem

32
Duties of Attendant
  • Know the hazards (be aware of behavioral effects
    of hazards)
  • Keep count of entrants
  • Remain outside permit-space until relieved
  • Communicate with entrant
  • Summon rescue squad
  • Warn unauthorized persons
  • Perform non-entry rescues

33
Duties of Entry Supervisors
  • Know the hazards
  • Verify permit complete
  • Sign permit
  • Terminate entry and cancel permit when complete
    or a problem
  • Verify rescue procedures are in place
  • Remove unauthorized individuals
  • Ensure consistent and acceptable entry procedures

34
Rescue Emergency Services
  • Rescuers must be able to respond in a timely
    manner based on hazards
  • Notify rescuers of hazards
  • Provide advance access to spaces
  • If EEs will be doing rescues
  • must be trained
  • must know first aid and CPR
  • must practice at least once every year

35
Resources Available to you
  • Federal OSHA confined space info page
  • http//www.osha-slc.gov/SLTC/confinedspaces/index.
    html
  • Copy of the federal standard
  • http//www.osha.gov/pls/oshaweb/owadisp.show_docum
    ent?p_tableSTANDARDSp_id9797p_text_versionFAL
    SE
  • Federal OSHA interpretations also available at
    above site
  • OSHA Advisor software download
  • http//www.osha-slc.gov/dts/osta/oshasoft/csa.html
  • State construction industry standard
  • http//www.revisor.leg.state.mn.us/arule/5207/

36
Review of Objectives
  • Identify one difference between permit-required
    and non-permit required confined spaces
  • Define acceptable entry conditions
  • Identify 5 required elements of a written
    confined space entry program
  • Identify 5 elements of a entry permit
  • Identify 3 entrant, attendant, and supervisor
    responsibilities
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