Forklifts and
Other Powered Industrial Trucks
Chapter 296-863, WAC
|
Effective
Date: 02/01/05 |
Contents
Index
Download
| WAC
296-863-500
Hazardous (Classified) Locations |
 For
printing |
Your Responsibility:
To use PITs safely in hazardous (classified)
locations
You must
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Use the appropriate approved PITs
in hazardous (classified) locations |
WAC 296-863-50005 |
WAC
296-863-50005
Use the appropriate PITs in hazardous
(classified) locations
You must
- Make sure PITS are used in hazardous (classified)
locations as follows:
- - PITS authorized to be used in Class
1 locations are shown in Table 1,
Approved PIT Use in Class 1 Locations.
- - PITS authorized to be used in Class
2 locations are shown in Table 2,
Approved PIT Use in Class 2 Locations.
- - PITS authorized to be used in Class
3 locations are shown in Table 3,
Approved PIT Use in Class 3 Locations.
- PITS authorized to be used in unclassified
locations are:
- - Approved PITS designated as Type D,
E, G, or LP
and
- - PITs that meet the requirements of a
Type D, E, G, or LP PIT.
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Definition:
- An unclassified location
is an area that's not designated as a Class
1, 2, or 3 location.
- Designations
means a code used to show the different types of hazardous
(classified) locations where PITs can be safely used:
- - D refers to trucks
that are diesel engine powered that have minimum safeguards
against inherent fire hazards.
- - DS refers to
diesel powered trucks that, in addition to meeting
all the requirements for type D trucks, are provided
with additional safeguards to the exhaust, fuel and
electrical systems.
- - DY refers to
diesel powered trucks that have all the safeguards
of the DS trucks and, in addition, any electrical
equipment is completely enclosed. They are equipped
with temperature limitation features.
- - E refers to electrically
powered trucks that have minimum acceptable safeguards
against inherent fire hazards.
- - ES refers to
electrically powered trucks that, in addition to all
of the requirements for the E trucks, have additional
safeguards to the electrical system to prevent emission
of hazardous sparks and to limit surface temperatures.
- - EE refers to
electrically powered trucks that have, in addition
to all of the requirements for the E and ES type trucks,
have their electric motors and all other electrical
equipment completely enclosed.
- - EX refers to
electrically powered trucks that differ from E, ES,
or EE type trucks in that the electrical fittings
and equipment are designed, constructed and assembled
to be used in atmospheres containing flammable vapors
or dusts.
- - G refers to gasoline
powered trucks that have minimum acceptable safeguards
against inherent fire hazards.
- - GS refers to
gasoline powered trucks that are provided with additional
exhaust, fuel, and electrical systems safeguards.
- - LP refers to
liquefied petroleum gas-powered trucks that, in addition
to meeting all the requirements for type G trucks,
have minimum acceptable safeguards against inherent
fire hazards.
- - LPS refers to
liquefied petroleum gas-powered trucks that in addition
to meeting the requirements for LP type trucks, have
additional exhaust, fuel, and electrical systems safeguards.
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Note:
- Tables 1, 2,
and 3 show the type of approved PITs that can be used
in the appropriate divisions and groups.
- PITS can't be used in divisions and
groups that don't have a PIT designation listed.
- Approved PITs will be marked or labeled
with the designation of the PIT. See WAC
296-863-20010, Make sure PITs are properly labeled.
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Table
1
Approved PIT Use in Class 1 Locations
Class
1
Locations in which flammable
gases or vapors are, or may be, present in the air in quantities
sufficient to produce explosive or ignitable mixtures |
Division
1
Conditions exist continuously, intermittently,
or periodically under normal operating conditions. |
Division
2
Conditions may occur accidentally, for
example, due to a puncture of a storage drum. |
Group
A |
Group
B |
Group
C |
Group
D |
Group A |
Group B |
Group C |
Group
D |
Acetylene
|
Hydrogen
|
Ethylether
|
Acetone
Alcohols
Benzene
Gasoline
Lacquer
Solvent |
Acetylene |
Hydrogen |
Ethylether |
Acetone
Alcohols
Benzene
Gasoline
Lacquer
Solvent |
No
PIT type can be used |
No
PIT type can be used |
No
PIT type can be used |
Use
this PIT type:
EX |
No
PIT type can be used |
No PIT type can
be used |
No PIT type can
be used |
Use
this PIT type:
DS
DY
ES
EE
EX
GS
LPS |
Table
2
Approved PIT Use in Class 2 Locations
Class
2
Locations which are
hazardous because of the presence of combustible dust
|
Division
1
Explosive mixture may be present
under normal operating conditions, or where failure of equipment
may cause the condition to exist simultaneously with arcing
or sparking of electrical equipment, or where dusts of an
electrically conducting nature may be present. |
Division
2
Explosive mixture not normally present,
but where deposits of dust may cause heat rise in electrical
equipment, or where such deposits may be ignited by arcs
or sparks from electrical equipment. |
Group
E |
Group
F |
Group
G |
Group
E |
Group
F |
Group
G |
Metal dust |
Carbon black
Coal dust
Coke dust |
Grain dust
Flour dust
Starch dust
Organic dust |
Metal dust |
Carbon black
Coal dust
Coke dust |
Grain dust
Flour dust
Starch dust
Organic dust |
No PIT type can
be used |
Use this PIT
type:
EX
|
Use
this PIT type:
EX
|
No PIT type can
be used |
Use this PIT
type:
EX
DY
EE
|
Use this PIT
type:
DS
DY
ES
EE
EX
GS
LPS |
Table
3
Approved PIT Use in Class 3 Locations
Class
3
Locations where easily
ignitable fibers or flyings are present but not likely to
be in suspension in quantities sufficient to produce ignitable
mixtures |
Division
1
Locations in which easily ignitable
fibers or materials producing combustible flyings are handled,
manufactured, or used. |
Division
2
Locations in which easily ignitable
fibers are stored or handled (except in the process of manufacture).
|
Use this PIT
type:
DY
EE
EX |
Use this PIT
type:
DS
DY
E
ES
EE
EX
GS
LPS
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