Minnesota Administrative Rules

4720.3962 CHEMICAL HANDLING.

Subpart 1.

Measuring equipment.

Equipment must be provided in the handling facility to measure the chemicals used to prepare feed solutions.

Subp. 2.

Piping.

Piping for chemicals must be compatible with the chemical being conveyed.

Subp. 3.

Dust control.

Provision must be made for the transfer of dry chemicals from shipping containers to storage bins or hoppers in a way that minimizes dust. Control must be provided by use of one of the following:

A.

vacuum pneumatic equipment or closed conveyor systems;

B.

facilities for emptying shipping containers in special containers; or

C.

exhaust fans and dust filters which place the hoppers or bins under negative pressure.

Subp. 4.

Acids.

Acids must be kept in closed, acid-resistant shipping containers or storage units. Transfer from shipping containers to solution or day tanks must be through suitable hose or pipe by means of a transfer pump.

Statutory Authority:

MS s 144.383

History:

15 SR 1842

Published Electronically:

October 27, 2003