Section 296-307-45515. Provide bottom drains.

Exemption:	A bottom drain is not required if:
	– The viscosity of the liquid makes it impractical to empty the tank by gravity or pumping
	OR
	– The dip tank has an automatic closing cover that meets the requirements of WAC 296-307-45530.

You must:

• Provide a bottom drain on all dip tanks that hold more than five hundred gallons of liquid

• Make sure the bottom drain:

– Is properly trapped

– Will empty the dip tank during a fire

– Has pipes large enough to empty the tank within five minutes

– Uses automatic pumps if gravity draining is not practical

– Is capable of both manual and automatic operation

– Discharges to a safe location.

Note:	Discharges to a safe location could be a:
	• Safe location outside the building
	OR
	• Closed, properly vented salvage tank or tanks that can hold more than the dip tank.

You must:

• Make sure manual operation of the bottom drain is performed from a safe and easily accessible location.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 03-10-068, § 296-307-45515, filed 5/6/03, effective 8/1/03.]

RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 03-10-068, § 296-307-45515, filed 5/6/03, effective 8/1/03.

Rules

296-307-45530,