Materials Requirements - doe-std-3020-20050011

DOE-STD-3020-2005

5.3

Materials Requirements: Construction materials for HEPA filters shall be selected

to avoid generation of Environmental Protection Agency (EPA) regulated wastes as

specified in 40 CFR 261, Identification and Listing of Hazardous Waste. For this

reason, cadmium is no longer acceptable for treatment of filter cases, nor is asbestos

acceptable as a HEPA filter component. State and local regulations may contain

additional restrictions.

5.3.1

Filter Media:

5.3.1.1

Fibrous Filter Media: Fibrous filter media shall be in accordance

with the provisions of ASME AG-1, FC-3000.

5.3.1.2

Asbestos : Asbestos is not acceptable as a filter media component.

5.3.2

HEPA Filter Case Materials:

5.3.2.1

Structural Material: Metal or wood filter case material shall be in

accordance with ASME AG-1, FC-3000, except that Type I cases

are not acceptable due to the use of cadmium.

5.3.2.2

Fire Retardant Material: Filter case material that must be fire

retardant shall be in accordance with ASME AG -1, FC-3000.

5.3.3

Separator Material: Separator material including acid resistant separators

shall be in accordance with ASME AG-1, FC-3000. In addition to the

requirements of ASME AG-1, the separator shall be provided with a "turned

edge" prior to corrugation to protect the filter media.

5.3.4

Adhesives: Adhesives shall be in accordance with ASME AG-1, FC-3000.

5.3.5

Gaskets and Seals : Two acceptable methods for sealing the filter to its

filter case are elastomer gaskets and gelatinous seals. Two different methods

or materials shall not be used on the same filter case.

5.3.5.1

Elastomer Gasket: Elastomer gasket materials shall be in

accordance with ASME AG-1, FC-3000

5.3.5.2

Gelatinous Seal: The sealant material shall be in accordance with

ASME AG-1, FC-3000. The sealant shall be nonflammable as

defined in ASTM D 92; e.g., no flash at 450 0 F (232 0 C) or

below; with a fire retardant rating of V-0 per UL-94. The