Section 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.

Definitions:

• An unclassified location is an area that is 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.

Note:	• Tables 1, 2, and 3 show the type of approved PITs that can be used in the appropriate divisions and groups.
	• PITS cannot be used in divisions and groups that do not 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.

Table 1

Approved PIT Use in Class 1 Locations

Table 2

Approved PIT Use in Class 2 Locations

Table 3

Approved PIT Use in Class 3 Locations

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 07-03-163, § 296-863-50005, filed 1/24/07, effective 4/1/07; WSR 04-19-051, § 296-863-50005, filed 9/14/04, effective 2/1/05.]

RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 07-03-163, § 296-863-50005, filed 1/24/07, effective 4/1/07; WSR 04-19-051, § 296-863-50005, filed 9/14/04, effective 2/1/05.

Rules

296-863-20010,