These
regulations
are
copied
directly
from
the
Ontario
Ministry
Of
Labour's
web
site
and
are
current
to
date
of
publishing.
Not
responsible
for
any
use
or
misuse
of
the
page,
always
check
with
your
local
Ministry
of
lablour
inspector
for
current
regulations.
Occupational
Health
and
Safety
Act
Loi
sur
la
santé
et
la
sécurité
au
travail
ONTARIO
REGULATION
632/05
No
Amendments
Confined
Spaces
This
Regulation
is
made
in
English
only.
CONTENTS
|
1.
|
Definitions
|
|
2.
|
Application
|
|
3.
|
Exceptions
|
|
4.
|
Confined
spaces
with
multi-employer
involvement
|
|
5.
|
Program
|
|
6.
|
Assessment
|
|
7.
|
Plan
|
|
8.
|
Hazard
recognition
and
other
general
training
|
|
9.
|
Plan-specific
training
|
|
10.
|
Entry
permits
|
|
11.
|
On-site
rescue
procedures
|
|
12.
|
Rescue
equipment
and
methods
of
communication
|
|
13.
|
Personal
protective
equipment,
clothing
and
devices
|
|
14.
|
Isolation
of
energy
and
control
of
materials
movement
|
|
15.
|
Attendant
|
|
16.
|
Means
for
entering
and
exiting
|
|
17.
|
Preventing
unauthorized
entry
|
|
18.
|
Atmospheric
testing
|
|
19.
|
Explosive
and
flammable
substances
|
|
20.
|
Ventilation
and
purging
|
|
21.
|
Records
|
|
Table
1
|
|
Definitions
1. In
this
Regulation,
“acceptable
atmospheric
levels”
means
that,
(a)
the
atmospheric
concentration
of
any
explosive
or
flammable
gas
or
vapour
is
less
than,
(i)
25
per
cent
of
its
lower
explosive
limit,
if
paragraph
1
of
subsection
19
(4)
applies,
(ii)
10
per
cent
of
its
lower
explosive
limit,
if
paragraph
2
of
subsection
19
(4)
applies,
(iii)
5
per
cent
of
its
lower
explosive
limit,
if
paragraph
3
of
subsection
19
(4)
applies,
(b)
the
oxygen
content
of
the
atmosphere
is
at
least
19.5
per
cent
but
not
more
than
23
per
cent
by
volume,
and
(c)
the
exposure
to
atmospheric
contaminants
does
not
exceed
any
applicable
level
set
out
in
a
regulation
made
under
the
Act
and
listed
in
Table
1;
“adequate”,
when
used
in
relation
to
a
procedure,
plan,
material,
device,
object
or
thing,
means
that
it
is,
(a)
sufficient
for
both
its
intended
and
its
actual
use,
and
(b)
sufficient
to
protect
a
worker
from
occupational
illness
or
occupational
injury;
“adequately”
has
a
meaning
that
corresponds
to
the
meaning
of
“adequate”;
“assessment”
means
an
assessment
of
hazards
with
respect
to
one
or
more
confined
spaces
in
a
workplace,
as
described
in
section
6;
“atmospheric
hazards”
means,
(a)
the
accumulation
of
flammable,
combustible
or
explosive
agents,
(b)
an
oxygen
content
in
the
atmosphere
that
is
less
than
19.5
per
cent
or
more
than
23
per
cent
by
volume,
or
(c)
the
accumulation
of
atmospheric
contaminants,
including
gases,
vapours,
fumes,
dusts
or
mists,
that
could,
(i)
result
in
acute
health
effects
that
pose
an
immediate
threat
to
life,
or
(ii)
interfere
with
a
person’s
ability
to
escape
unaided
from
a
confined
space;
“cold
work”
means
work
that
is
not
capable
of
producing
a
source
of
ignition;
“confined
space”
means
a
fully
or
partially
enclosed
space,
(a)
that
is
not
both
designed
and
constructed
for
continuous
human
occupancy,
and
(b)
in
which
atmospheric
hazards
may
occur
because
of
its
construction,
location
or
contents
or
because
of
work
that
is
done
in
it;
“emergency
work”
means
work
performed
in
connection
with
an
unforeseen
event
that
involves
an
imminent
danger
to
the
life,
health
or
safety
of
any
person;
“hot
work”
means
work
that
is
capable
of
producing
a
source
of
ignition;
“lead
employer”
means
an
employer
who
contracts
for
the
services
of
one
or
more
other
employers
or
independent
contractors
in
relation
to
one
or
more
confined
spaces
that
are
located,
(a)
in
the
lead
employer’s
own
workplace,
or
(b)
in
another
employer’s
workplace;
“plan”
means
a
plan
for
one
or
more
confined
spaces
in
a
workplace,
as
described
in
section
7;
“program”
means
a
program
for
one
or
more
confined
spaces
in
a
workplace,
as
described
in
section
5;
“purging”
means
displacing
contaminants
from
a
confined
space;
“related
work”
means
work
that
is
performed
near
a
confined
space
in
direct
support
of
work
inside
the
confined
space.
O. Reg.
632/05,
s. 1.
Application
2. Subject
to
section
3,
this
Regulation
applies
to
all
workplaces
to
which
the
Occupational
Health
and
Safety
Act
applies.
O. Reg.
632/05,
s. 2.
Exceptions
3. (1) This
Regulation
does
not
apply
to,
(a)
work
performed
underwater
by
a
diver
during
a
diving
operation
as
defined
in
Ontario
Regulation
629/94
(Diving
Operations)
made
under
the
Act;
(b)
work
or
workplaces
governed
by,
(i)
Regulation
851
of
the
Revised
Regulations
of
Ontario,
1990
(Industrial
Establishments)
made
under
the
Act,
(ii)
Regulation
854
of
the
Revised
Regulations
of
Ontario,
1990
(Mines
and
Mining
Plants)
made
under
the
Act,
(iii)
Ontario
Regulation
213/91
(Construction
Projects)
made
under
the
Act,
or
(iv)
Ontario
Regulation
67/93
(Health
Care
and
Residential
Facilities)
made
under
the
Act;
or
(c)
farming
operations.
O. Reg.
632/05,
s. 3
(1).
(2) Sections
4
to
7
and
9
to
21
of
this
Regulation
do
not
apply
to
emergency
work
performed
by,
(a)
a
firefighter
as
defined
in
the
Fire
Protection
and
Prevention
Act,
1997;
or
(b)
a
person
who,
(i)
holds
a
certificate
under
the
Technical
Standards
and
Safety
Act,
2000
designating
him
or
her
as
a
gas
technician,
and
(ii)
is
working
under
the
direction
of
a
fire
department,
as
defined
in
the
Fire
Protection
and
Prevention
Act,
1997.
O. Reg.
632/05,
s. 3
(2).
(3) A
worker
described
in
subsection
(2)
who
performs
emergency
work
shall
be
adequately
protected
by,
(a)
personal
protective
equipment,
clothing
and
devices
provided
by
the
worker’s
employer;
(b)
training
under
section
8
provided
by
that
employer;
and
(c)
written
procedures
and
other
measures
developed
by
that
employer.
O. Reg.
632/05,
s. 3
(3).
Confined
spaces
with
multi-employer
involvement
4. (1) This
section
applies
if
the
workers
of
more
than
one
employer
perform
work
in
the
same
confined
space
or
related
work
with
respect
to
the
same
confined
space.
O. Reg.
632/05,
s. 4
(1).
(2) Before
any
worker
enters
the
confined
space
or
begins
related
work
with
respect
to
the
confined
space,
the
lead
employer
shall
prepare
a
co-ordination
document
to
ensure
that
the
duties
imposed
on
employers
by
sections
5
to
7,
9
to
12
and
14
to
20
are
performed
in
a
way
that
protects
the
health
and
safety
of
all
workers
who
perform
work
in
the
confined
space
or
related
work
with
respect
to
the
confined
space.
O. Reg.
632/05,
s. 4
(2).
(3) Without
restricting
the
generality
of
subsection
(2),
the
co-ordination
document
may
provide
for
the
performance
of
a
duty
or
duties
referred
to
in
that
subsection
by
one
or
more
employers
on
behalf
of
one
or
more
other
employers,
with
respect
to
some
or
all
of
the
workers.
O. Reg.
632/05,
s. 4
(3).
(4) A
copy
of
the
co-ordination
document
shall
be
provided
to,
(a)
each
employer
of
workers
who
perform
work
in
the
same
confined
space
or
related
work
with
respect
to
the
same
confined
space;
and
(b)
the
joint
health
and
safety
committee
or
health
and
safety
representative,
if
any,
for
each
employer
of
workers
who
perform
work
in
the
same
confined
space
or
related
work
with
respect
to
the
same
confined
space.
O. Reg.
632/05,
s. 4
(4).
Program
5. (1) If
an
employer’s
workplace
includes
a
confined
space
that
workers
may
enter
to
perform
work,
the
employer
shall
ensure
that
a
written
program
for
the
confined
space
is
developed
and
maintained
in
accordance
with
this
Regulation
before
a
worker
enters
the
confined
space.
O. Reg.
632/05,
s. 5
(1).
(2) The
program
may
apply
to
one
or
more
confined
spaces.
O. Reg.
632/05,
s. 5
(2).
(3) The
program
shall
be
developed
and
maintained
in
consultation
with
the
joint
health
and
safety
committee
or
the
health
and
safety
representative,
if
any.
O. Reg.
632/05,
s. 5
(3).
(4) The
program
shall
be
adequate
and
shall
provide
for,
(a)
a
method
for
recognizing
each
confined
space
to
which
the
program
applies;
(b)
a
method
for
assessing
the
hazards
to
which
workers
may
be
exposed,
in
accordance
with
section
6;
(c)
a
method
for
the
development
of
one
or
more
plans,
in
accordance
with
section
7;
(d)
a
method
for
general
training
of
workers,
in
accordance
with
section
8;
and
(e)
an
entry
permit
system
that
sets
out
the
measures
and
procedures
to
be
followed
when
work
is
to
be
performed
in
a
confined
space
to
which
the
program
applies.
O. Reg.
632/05,
s. 5
(4).
(5) The
employer
shall
provide
a
copy
of
the
program
to
the
joint
health
and
safety
committee
or
the
health
and
safety
representative,
if
any.
O. Reg.
632/05,
s. 5
(5).
(6) The
employer
shall
ensure
that
a
copy
of
the
program
is
available
to,
(a)
any
other
employer
of
workers
who
perform
work
to
which
the
program
relates;
and
(b)
every
worker
who
performs
work
to
which
the
program
relates,
if
the
workplace
has
no
joint
health
and
safety
committee
or
health
and
safety
representative.
O. Reg.
632/05,
s. 5
(6).
Assessment
6. (1) Before
any
worker
enters
a
confined
space,
the
employer
shall
ensure
that
an
adequate
assessment
of
the
hazards
related
to
the
confined
space
has
been
carried
out.
O. Reg.
632/05,
s. 6
(1).
(2) The
assessment
shall
be
recorded
in
writing
and
shall
consider,
with
respect
to
each
confined
space,
(a)
the
hazards
that
may
exist
due
to
the
design,
construction,
location,
use
or
contents
of
the
confined
space;
and
(b)
the
hazards
that
may
develop
while
work
is
done
inside
the
confined
space.
O. Reg.
632/05,
s. 6
(2).
(3) The
record
of
the
assessment
may
be
incorporated
into
an
entry
permit
under
section
10.
O. Reg.
632/05,
s. 6
(3).
(4) If
two
or
more
confined
spaces
are
of
similar
construction
and
present
the
same
hazards,
their
assessments
may
be
recorded
in
a
single
document,
but
each
confined
space
shall
be
clearly
identified
in
the
assessment.
O. Reg.
632/05,
s. 6
(4).
(5) The
employer
shall
appoint
a
person
with
adequate
knowledge,
training
and
experience
to
carry
out
the
assessment
and
shall
maintain
a
record
containing
details
of
the
person’s
knowledge,
training
and
experience.
O. Reg.
632/05,
s. 6
(5).
(6) The
assessment
shall
contain
the
name
of
the
person
who
carries
out
the
assessment.
O. Reg.
632/05,
s. 6
(6).
(7) The
person
shall
sign
and
date
the
assessment
and
provide
it
to
the
employer.
O. Reg.
632/05,
s. 6
(7).
(8) On
request,
the
employer
shall
provide
copies
of
the
assessment
and
of
the
record
mentioned
in
subsection
(5)
to,
(a)
the
joint
health
and
safety
committee
or
the
health
and
safety
representative,
if
any;
or
(b)
every
worker
who
performs
work
to
which
the
assessment
relates,
if
the
workplace
has
no
joint
health
and
safety
committee
or
health
and
safety
representative.
O. Reg.
632/05,
s. 6
(8).
(9) The
employer
shall
ensure
that
the
assessment
is
reviewed
as
often
as
is
necessary
to
ensure
that
the
relevant
plan
remains
adequate.
O. Reg.
632/05,
s. 6
(9).
Plan
7. (1) Before
any
worker
enters
a
confined
space,
the
employer
shall
ensure
that
an
adequate
written
plan,
including
procedures
for
the
control
of
hazards
identified
in
the
assessment,
has
been
developed
and
implemented
by
a
competent
person
for
the
confined
space.
O. Reg.
632/05,
s. 7
(1).
(2) The
plan
may
be
incorporated
into
an
entry
permit
under
section
10.
O. Reg.
632/05,
s. 7
(2).
(3) The
plan
shall
contain
provisions
for,
(a)
the
duties
of
workers;
(b)
co-ordination
in
accordance
with
section
4,
if
applicable;
(c)
on-site
rescue
procedures,
in
accordance
with
section
11;
(d)
rescue
equipment
and
methods
of
communication,
in
accordance
with
section
12;
(e)
personal
protective
equipment,
clothing
and
devices,
in
accordance
with
section
13;
(f)
isolation
of
energy
and
control
of
materials
movement,
in
accordance
with
section
14;
(g)
attendants,
in
accordance
with
section
15;
(h)
adequate
means
for
entering
and
exiting,
in
accordance
with
section
16;
(i)
atmospheric
testing,
in
accordance
with
section
18;
(j)
adequate
procedures
for
working
in
the
presence
of
explosive
or
flammable
substances,
in
accordance
with
section
19;
and
(k)
ventilation
and
purging,
in
accordance
with
section
20.
O. Reg.
632/05,
s. 7
(3).
(4) One
plan
may
deal
with
two
or
more
confined
spaces
that
are
of
similar
construction
and
present
the
same
hazards
as
identified
by
the
assessment.
O. Reg.
632/05,
s. 7
(4).
(5) The
employer
shall
ensure
that
the
plan
is
reviewed
as
often
as
is
necessary
to
ensure
that
it
remains
adequate.
O. Reg.
632/05,
s. 7
(5).
Hazard
recognition
and
other
general
training
8. (1) Every
worker
who
enters
a
confined
space
or
who
performs
related
work
shall
be
given
adequate
training
for
safe
work
practices
for
working
in
confined
spaces
and
for
performing
related
work,
including
training
in
the
recognition
of
hazards
associated
with
confined
spaces.
O. Reg.
632/05,
s. 8
(1).
(2) The
employer
shall
appoint
a
person
with
adequate
knowledge,
training
and
experience
to
conduct
the
training.
O. Reg.
632/05,
s. 8
(2).
(3) The
employer
shall
ensure
that
training
under
this
section
is
developed
in
consultation
with
the
joint
health
and
safety
committee
or
the
health
and
safety
representative,
if
any.
O. Reg.
632/05,
s. 8
(3).
(4) The
employer
shall
ensure
that
training
under
this
section
is
reviewed,
in
consultation
with
the
joint
health
and
safety
committee
or
the
health
and
safety
representative,
if
any,
whenever
there
is
a
change
in
circumstances
that
may
affect
the
safety
of
a
worker
who
enters
a
confined
space
in
the
workplace,
and
in
any
case
at
least
once
annually.
O. Reg.
632/05,
s. 8
(4).
(5) The
employer
shall
maintain
up-to-date
written
records
showing
who
provided
and
who
received
training
under
this
section,
the
nature
of
the
training
and
the
date
when
it
was
provided.
O. Reg.
632/05,
s. 8
(5).
(6) The
records
may
be
incorporated
into
an
entry
permit
under
section
10.
O. Reg.
632/05,
s. 8
(6).
(7) Training
under
this
section
may
be
combined
with
training
under
section
9.
O. Reg.
632/05,
s. 8
(7).
Plan-specific
training
9. (1) The
employer
shall
ensure
that
every
worker
who
enters
a
confined
space
or
who
performs
related
work,
(a)
receives
adequate
training,
in
accordance
with
the
relevant
plan,
to
work
safely
and
properly;
and
(b)
follows
the
plan.
O. Reg.
632/05,
s. 9
(1).
(2) The
employer
shall
maintain
up-to-date
written
records
showing
who
provided
and
who
received
training
under
this
section,
and
the
date
when
it
was
provided.
O. Reg.
632/05,
s. 9
(2).
(3) The
records
may
be
incorporated
into
an
entry
permit
under
section
10.
O. Reg.
632/05,
s. 9
(3).
(4) Training
under
this
section
may
be
combined
with
training
under
section
8.
O. Reg.
632/05,
s. 9
(4).
Entry
permits
10. (1) The
employer
shall
ensure
that
a
separate
entry
permit
is
issued
each
time
work
is
to
be
performed
in
a
confined
space,
before
any
worker
enters
the
confined
space.
O. Reg.
632/05,
s. 10
(1).
(2) An
entry
permit
shall
be
adequate
and
shall
include
at
least
the
following:
1.
The
location
of
the
confined
space.
2.
A
description
of
the
work
to
be
performed
there.
3.
A
description
of
the
hazards
and
the
corresponding
control
measures.
4.
The
time
period
for
which
the
entry
permit
applies.
5.
The
name
of
the
attendant
described
in
section
15.
6.
A
record
of
each
worker’s
entries
and
exits.
7.
A
list
of
the
equipment
required
for
entry
and
rescue,
and
verification
that
the
equipment
is
in
good
working
order.
8.
Results
obtained
in
atmospheric
testing
under
section
18.
9.
If
the
work
to
be
performed
in
the
confined
space
includes
hot
work,
adequate
provisions
for
the
hot
work
and
corresponding
control
measures.
O. Reg.
632/05,
s. 10
(2).
(3) Before
each
shift,
a
competent
person
shall
verify
that
the
entry
permit
complies
with
the
relevant
plan.
O. Reg.
632/05,
s. 10
(3).
(4) The
employer
shall
ensure
that
the
entry
permit,
during
the
time
period
for
which
it
applies,
is
readily
available
to
every
person
who
enters
the
confined
space
and
to
every
person
who
performs
related
work
with
respect
to
the
confined
space.
O. Reg.
632/05,
s. 10
(4).
On-site
rescue
procedures
11. (1) The
employer
shall
ensure
that
no
worker
enters
or
remains
in
a
confined
space
unless,
in
accordance
with
the
relevant
plan,
adequate
written
on-site
rescue
procedures
that
apply
to
the
confined
space
have
been
developed
and
are
ready
for
immediate
implementation.
O. Reg.
632/05,
s. 11
(1).
(2) Before
a
worker
enters
a
confined
space,
the
employer
shall
ensure
that
an
adequate
number
of
persons
trained
in
the
matters
listed
in
subsection
(3)
are
available
for
immediate
implementation
of
the
on-site
rescue
procedures
mentioned
in
subsection
(1).
O. Reg.
632/05,
s. 11
(2).
(3) The
persons
shall
be
trained
in,
(a)
the
on-site
rescue
procedures
mentioned
in
subsection
(1);
(b)
first
aid
and
cardio-pulmonary
resuscitation;
and
(c)
the
use
of
the
rescue
equipment
required
in
accordance
with
the
relevant
plan.
O. Reg.
632/05,
s. 11
(3).
Rescue
equipment
and
methods
of
communication
12. (1) The
employer
shall
ensure
that
the
rescue
equipment
identified
in
the
relevant
plan
is,
(a)
readily
available
to
effect
a
rescue
in
the
confined
space;
(b)
appropriate
for
entry
into
the
confined
space;
and
(c)
inspected
as
often
as
is
necessary
to
ensure
it
is
in
good
working
order,
by
a
person
with
adequate
knowledge,
training
and
experience
who
is
appointed
by
the
employer.
O. Reg.
632/05,
s. 12
(1).
(2) The
inspection
under
clause
(1)
(c)
shall
be
recorded
in
writing
by
the
person,
and
the
record
of
the
inspection
may
be
incorporated
into
the
entry
permit
under
section
10.
O. Reg.
632/05,
s. 12
(2).
(3) The
employer
shall
establish
methods
of
communication
that
are
appropriate
for
the
hazards
identified
in
the
relevant
assessment,
and
shall
make
them
readily
available
for
workers
to
communicate
with
the
attendant
described
in
section
15.
O. Reg.
632/05,
s. 12
(3).
Personal
protective
equipment,
clothing
and
devices
13. The
employer
shall
ensure
that
each
worker
who
enters
a
confined
space
is
provided
with
adequate
personal
protective
equipment,
clothing
and
devices,
in
accordance
with
the
relevant
plan.
O. Reg.
632/05,
s. 13.
Isolation
of
energy
and
control
of
materials
movement
14. The
employer
shall,
in
accordance
with
the
relevant
plan,
ensure
that
each
worker
entering
a
confined
space
is
adequately
protected,
(a)
against
the
release
of
hazardous
substances
into
the
confined
space,
(i)
by
blanking
or
disconnecting
piping,
or
(ii)
if
compliance
with
subclause
(i)
is
not
practical
in
the
circumstances
for
technical
reasons,
by
other
adequate
means;
(b)
against
contact
with
electrical
energy
inside
the
confined
space
that
could
endanger
the
worker,
(i)
by
disconnecting,
de-energizing,
locking
out
and
tagging
the
source
of
electrical
energy,
or
(ii)
if
compliance
with
subclause
(i)
is
not
practical
in
the
circumstances
for
technical
reasons,
by
other
adequate
means;
(c)
against
contact
with
moving
parts
of
equipment
inside
the
confined
space
that
could
endanger
the
worker,
(i)
by
disconnecting
the
equipment
from
its
power
source,
de-energizing
the
equipment,
locking
it
out
and
tagging
it,
or
(ii)
if
compliance
with
subclause
(i)
is
not
practical
in
the
circumstances
for
technical
reasons,
immobilizing
the
equipment
by
blocking
or
other
adequate
means;
and
(d)
against
drowning,
engulfment,
entrapment,
suffocation
and
other
hazards
from
free-flowing
material,
by
adequate
means.
O. Reg.
632/05,
s. 14.
Attendant
15. (1) Whenever
a
worker
is
to
enter
a
confined
space,
the
employer
shall
ensure
that
an
attendant,
(a)
is
assigned;
(b)
is
stationed
outside
and
near,
(i)
the
entrance
to
the
confined
space,
or
(ii)
if
there
are
two
or
more
entrances,
the
one
that
will
best
allow
the
attendant
to
perform
his
or
her
duties
under
subsection
(2);
(c)
is
in
constant
communication
with
all
workers
inside
the
confined
space,
using
the
means
of
communication
described
in
the
relevant
plan;
and
(d)
is
provided
with
a
device
for
summoning
an
adequate
rescue
response.
O. Reg.
632/05,
s. 15
(1).
(2) The
attendant
shall
not
enter
the
confined
space
at
any
time
and
shall,
in
accordance
with
the
relevant
plan,
(a)
monitor
the
safety
of
the
worker
inside;
(b)
provide
assistance
to
him
or
her;
and
(c)
summon
an
adequate
rescue
response
if
required.
O. Reg.
632/05,
s. 15
(2).
Means
for
entering
and
exiting
16. An
adequate
means
for
entering
and
exiting
shall
be
provided
for
all
workers
who
enter
a
confined
space,
in
accordance
with
the
relevant
plan.
O. Reg.
632/05,
s. 16.
Preventing
unauthorized
entry
17. If
there
is
a
possibility
of
unauthorized
entry
into
a
confined
space,
the
employer
shall
ensure
that
each
entrance
to
the
confined
space,
(a)
is
adequately
secured
against
unauthorized
entry;
or
(b)
has
been
provided
with
adequate
barricades,
adequate
warning
signs
regarding
unauthorized
entry,
or
both.
O. Reg.
632/05,
s. 17.
Atmospheric
testing
18. (1) The
employer
shall
appoint
a
person
with
adequate
knowledge,
training
and
experience
to
perform
adequate
tests
as
often
as
necessary
before
and
while
a
worker
is
in
a
confined
space
to
ensure
that
acceptable
atmospheric
levels
are
maintained
in
the
confined
space
in
accordance
with
the
relevant
plan.
O. Reg.
632/05,
s. 18
(1).
(2) If
the
confined
space
has
been
both
unoccupied
and
unattended,
tests
shall
be
performed
before
a
worker
enters
or
re-enters.
O. Reg.
632/05,
s. 18
(2).
(3) The
person
performing
the
tests
shall
use
calibrated
instruments
that
are
in
good
working
order
and
are
appropriate
for
the
hazards
identified
in
the
relevant
assessment.
O. Reg.
632/05,
s. 18
(3).
(4) The
employer
shall
ensure
that
the
results
of
every
sample
of
a
test
are
recorded,
subject
to
subsection
(5).
O. Reg.
632/05,
s. 18
(4).
(5) If
the
tests
are
performed
using
continuous
monitoring,
the
employer
shall
ensure
that
test
results
are
recorded
at
adequate
intervals.
O. Reg.
632/05,
s. 18
(5).
(6) The
tests
shall
be
performed
in
a
manner
that
does
not
endanger
the
health
or
safety
of
the
person
performing
them.
O. Reg.
632/05,
s. 18
(6).
(7) In
this
section,
“sample”
means
an
individual
reading
of
the
composition
of
the
atmosphere
in
the
confined
space;
“test”
means
a
collection
of
samples.
O. Reg.
632/05,
s. 18
(7).
Explosive
and
flammable
substances
19. (1) This
section
applies
only
in
respect
of
atmospheric
hazards
described
in
clause
(a)
of
the
definition
of
“atmospheric
hazards”
in
section
1.
O. Reg.
632/05,
s. 19
(1).
(2) The
employer
shall
ensure
that
this
section
is
complied
with,
by
ventilation,
purging,
rendering
the
atmosphere
inert
or
other
adequate
means,
in
accordance
with
the
relevant
plan.
O. Reg.
632/05,
s. 19
(2).
(3) The
employer
shall
ensure
that
no
worker
enters
or
remains
in
a
confined
space
that
contains
or
is
likely
to
contain
an
airborne
combustible
dust
or
mist
whose
atmospheric
concentration
may
create
a
hazard
of
explosion.
O. Reg.
632/05,
s. 19
(3).
(4) The
employer
shall
ensure
that
no
worker
enters
or
remains
in
a
confined
space
that
contains
or
is
likely
to
contain
an
explosive
or
flammable
gas
or
vapour,
unless
one
of
the
following
applies:
1.
The
worker
is
performing
only
inspection
work
that
does
not
produce
a
source
of
ignition.
In
the
case
of
an
explosive
or
flammable
gas
or
vapour,
the
atmospheric
concentration
is
less
than
25
per
cent
of
its
lower
explosive
limit,
as
determined
by
a
combustible
gas
instrument.
2.
The
worker
is
performing
only
cold
work.
In
the
case
of
an
explosive
or
flammable
gas
or
vapour,
the
atmospheric
concentration
is
less
than
10
per
cent
of
its
lower
explosive
limit,
as
determined
by
a
combustible
gas
instrument.
3.
The
worker
is
performing
hot
work.
All
the
following
conditions
are
satisfied:
i.
In
the
case
of
an
explosive
or
flammable
gas
or
vapour,
the
atmospheric
concentration
is
less
than
5
per
cent
of
its
lower
explosive
limit,
as
determined
by
a
combustible
gas
instrument.
ii.
The
atmosphere
in
the
confined
space
does
not
contain,
and
is
not
likely
to
contain
while
a
worker
is
inside,
an
oxygen
content
greater
than
23
per
cent.
iii.
The
atmosphere
in
the
confined
space
is
monitored
continuously.
iv.
The
entry
permit
includes
adequate
provisions
for
hot
work
and
corresponding
control
measures.
v.
An
adequate
alarm
system
and
exit
procedure
are
provided
to
ensure
that
workers
have
adequate
warning
and
are
able
to
exit
the
confined
space
safely
if
either
or
both
of
the
following
occur:
A.
In
the
case
of
an
explosive
or
flammable
gas
or
vapour,
the
atmospheric
concentration
exceeds
5
per
cent
of
its
lower
explosive
limit.
B.
The
oxygen
content
of
the
atmosphere
exceeds
23
per
cent
by
volume.
O. Reg.
632/05,
s. 19
(4).
(5) Subsections
(3)
and
(4)
do
not
apply
if,
(a)
the
atmosphere
in
the
confined
space,
(i)
has
been
rendered
inert
by
adding
an
inert
gas,
and
(ii)
is
monitored
continuously
to
ensure
that
it
remains
inert;
and
(b)
a
worker
entering
the
confined
space
uses,
(i)
adequate
respiratory
protective
equipment,
(ii)
adequate
equipment
to
allow
persons
outside
the
confined
space
to
locate
and
rescue
the
worker
if
necessary,
and
(iii)
such
other
equipment
as
is
necessary
to
ensure
the
worker’s
safety.
O. Reg.
632/05,
s. 19
(5).
(6) The
equipment
mentioned
in
subclauses
(5)
(b)
(i),
(ii)
and
(iii)
shall
be
inspected
by
a
person
with
adequate
knowledge,
training
and
experience,
appointed
by
the
employer,
and
shall
be
in
good
working
order
before
the
worker
enters
the
confined
space.
O. Reg.
632/05,
s. 19
(6).
Ventilation
and
purging
20. (1) This
section
applies
only
in
respect
of
atmospheric
hazards
described
in
clause
(b)
or
(c)
of
the
definition
of
“atmospheric
hazards”
in
section
1.
O. Reg.
632/05,
s. 20
(1).
(2) If
atmospheric
hazards
exist
or
are
likely
to
exist
in
a
confined
space,
the
confined
space
shall
be
purged,
ventilated
or
both,
before
any
worker
enters
it,
to
ensure
that
acceptable
atmospheric
levels
are
maintained
in
the
confined
space
while
any
worker
is
inside.
O. Reg.
632/05,
s. 20
(2).
(3) If
mechanical
ventilation
is
required
to
maintain
acceptable
atmospheric
levels,
an
adequate
warning
system
and
exit
procedure
shall
also
be
provided
to
ensure
that
workers
have
adequate
warning
of
ventilation
failure
and
are
able
to
exit
the
confined
space
safely.
O. Reg.
632/05,
s. 20
(3).
(4) If
compliance
with
subsection
(2)
is
not
practical
in
the
circumstances
for
technical
reasons,
(a)
compliance
with
subsection
(3)
is
not
required;
and
(b)
a
worker
entering
the
confined
space
shall
use,
(i)
adequate
respiratory
protective
equipment,
(ii)
adequate
equipment
to
allow
persons
outside
the
confined
space
to
locate
and
rescue
the
worker
if
necessary,
and
(iii)
such
other
equipment
as
is
necessary
to
ensure
the
worker’s
safety.
O. Reg.
632/05,
s. 20
(4).
(5) The
equipment
mentioned
in
subclauses
(4)
(b)
(i),
(ii)
and
(iii)
shall
be
inspected
by
a
person
with
adequate
knowledge,
training
and
experience,
appointed
by
the
employer,
and
shall
be
in
good
working
order
before
the
worker
enters
the
confined
space.
O. Reg.
632/05,
s. 20
(5).
Records
21. (1) The
employer
shall
retain
every
assessment,
plan,
co-ordination
document
under
section
4,
record
of
training
under
subsection
8
(5)
or
9
(2),
entry
permit
under
section
10,
record
of
an
inspection
under
subsection
12
(2)
and
record
of
a
test
under
section
18,
including
records
of
each
sample,
for
the
longer
of
the
following
periods:
1.
One
year
after
the
document
is
created.
2.
The
period
that
is
necessary
to
ensure
that
at
least
the
two
most
recent
records
of
each
kind
that
relate
to
a
particular
confined
space
are
retained.
O. Reg.
632/05,
s. 21
(1).
(2) If
section
4
applies,
the
documents
described
in
subsection
(1)
shall
be
retained
by
the
employer
responsible
for
creating
them.
O. Reg.
632/05,
s. 21
(2).
22. Omitted
(provides
for
coming
into
force
of
provisions
of
this
Regulation).
O. Reg.
632/05,
s. 22.
Table
1
