Wisconsin Administrative Code ATCP 93 "Flammable, Combustible and Hazardous Liquids"
requires certain system components, concepts, and methodologies to have
Wisconsin Material Approval from Department of Agriculture, Trade and
Consumer Protection (DATCP) Storage Tank Regulation prior to being
incorporated into system design or use.
Applications for ATCP 93 Material Approvals can be obtained by
completing and submitting the formal Material Approval Application.
Approvals have a three year life at which time they must be
updated and renewed. The links below contain lists of Material Approval
documents in Adobe.pdf format. Current approvals are listed by five
separate classifications. Expired Material Approvals are not separated
by classification. These Material Approvals are for information only.
Signed copies are available from the manufacturers or DATCP upon
General Note on Leak Detection Approvals:
The purpose of a DATCP Leak Detection Material Approval is to verify ATCP 93
compliance of a leak detection methodology from a particular
manufacturer at the time the equipment is sold. Leak detection equipment
or methodology may continue to be used in accordance with approval,
even after the expiration of the approval providing that all of the
following conditions are met:
it had Material Approval at the time it was purchased from the manufacturer
it is not altered or upgraded
the applicable code requirements for the leak detection method have not changed
The Material Approval is applicable to leak detection equipment that
is installed in a system as well as equipment that is moved from site to
site, such as precision tightness equipment used for annual tank or
pipeline tightness testing. New equipment sold or permanently installed
by vendors associated with a required Material Approval that has expired
will not be recognized as code compliant. For example, as long as you
are no longer selling new equipment in Wisconsin or have not upgraded
your current equipment to your Wisconsin users, then you do not have to
renew you Material Approval. If in the future you decide to sell or
upgrade the equipment for use in Wisconsin, then a new Material Approval
will be required at that time.
Material Approval Quick References