Storage Tank Program - SPS 310 Material Approvals

The Wisconsin Administrative Code SPS 310 - Flammable and Combustible Liquids Code requires certain system components, concepts and methodologies to have Wisconsin Department of Safety and Professional Services (DSPS) Material Approval prior to being incorporated into the system design or use.

Application for SPS 310 Material Approvals can be obtained by completing and submitting the formal Material Approval Application. Please note that the SPS 310 Material Approval application form and the review process is significantly different than the DSPS Safety and Buildings Material Approval application form and process utilized for regulatory building and structure purposes.

The following list contains links to material approval documents in Adobe .pdf format. Material Approvals have a three year life at which time they must be updated and renewed. Current approvals are listed by five separate classifications. Expired Approvals are not separated by classification.These material approvals are for information only, signed copies are available from the manufacturers or Wisconsin Department of Safety and Professional Services (DSPS) upon request.

The purpose of a DSPS Material Approval is to verify ch. SPS 310 compliance of a leak detection methodology from a particular manufacturer at the time the equipment is sold. A leak detection equipment or methodology may continue to be used in accordance with the approval, even after the approval has expired provided all of the following conditions are met:

• it had a current Material Approval at the time that it was purchased from the manufacturer;

• it is not altered or upgraded;

• the applicable code requirements for the leak detection method do not change.

This 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 test 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 complying. In other words, 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 your Material Approval. If in the future you decide to sell or upgrade the equipment for use in Wisconsin, then at that time a new approval will be required.

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