WAC 296-835-12015   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 296-835-12025.

     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, 49.17.060. 07-03-163, § 296-835-12015, filed 1/24/07, effective 4/1/07. Statutory Authority: RCW 49.17.010,[49.17].040 , and [49.17].050. 02-15-102, § 296-835-12015, filed 7/17/02, effective 10/1/02.]