MIL-PRF-2818D
n. Is off-gas testing required? (see 3.10 and 6.7).
6.3 Fire testing. Contractors are advised to review USCG 164.009 fire test requirements to determine
whether their insulation product (manufactured in accordance with MIL-PRF-2818) automatically meets the
criteria for non-combustibility without conducting prior fire tests, in which case only certification is required.
6.4 Material safety data sheets. Contracting officers will identify those activities requiring copies of
completed Material Safety Data Sheets prepared in accordance with FED-STD-313. In order to obtain the MSDS,
FAR clause 52.223-3 must be in the contract.
6.5 Lot acceptance and rejection criteria. If one or more defects are found in any sample (see 4.3.1), the
entire lot should be rejected. The contractor has the option of screening 100 percent of the lot for the defective
characteristic(s), or providing a new lot which should be inspected in accordance with the sampling plan herein.
6.6 Toxicity evaluation. The NAVENVIRHLTHCEN requires sufficient information to permit a HHA of
the product. Any questions concerning toxicity, information required to conduct a HHA, and requests for a HHA
should be addressed to the Commanding Officer, Navy Environmental Health Center, ATTN: Hazardous Materials
Department, Industrial Hygiene Directorate, 620 John Paul Jones Circle, Suite 1100, Portsmouth, VA 20378-
2103. Upon receipt of the HHA, a copy should be provided to Commander, Naval Sea Systems Command, ATTN:
SEA 05M3, 1333 Isaac Hull Ave., SE, Stop 5133, Washington Navy Yard, DC 20376-5133.
6.7 Off-gassing. Materials to be installed in submarines are to be controlled to prevent off-gassing,
which contaminates the atmosphere and results in health hazards to personnel or deleterious effects on machinery.
These controls are accomplished through the Submarine Material Control Program, which is described in the
Nuclear Powered Submarine Atmosphere Control Manual, NAVSEA Technical Manual S9510-AB-ATM-010 Rev.
2. Under the Submarine Material Control Program, all materials considered for use on submarines require
certification and assignment of a usage category. Under the certification process, candidate materials are selected
by Navy activities or contractors, and a request for certification is submitted to Commander, Naval Sea Systems
Command, ATTN: SEA 05Z9, 1333 Isaac Hull Ave., SE, Stop 5122, Washington Navy Yard DC 20376-5122. The
certification request is accompanied by detailed information, including descriptions of the material. A chemical
analysis is conducted, which is normally accomplished through off-gas testing. The off-gas test is required to be
conducted in a Government approved laboratory designated by the preparing activity. Information pertaining to this
test requirement may be obtained from Commander, Naval Sea Systems Command, ATTN: SEA 05Z9, 1333 Isaac
Hull Ave., SE, Stop 5160, Washington Navy Yard, DC 20376-5160. Based on the chemical analysis results, a
usage category is assigned to the material defining whether, and to what extent, the material may be used on
submarines.
6.8 Certification. Consideration should be given to including certificates of compliance with each
shipment of insulation. Certificates should indicate successful completion of the individual tests of conformance
inspection.
6.9 Supporting members. Examples of supporting member configurations are as follows:
20 gauge 1-inch 304 or 316 series stainless steel wire mesh approximately 1 inch hexagonal shaped on both sides
of the insulation or wire mesh on one side and expanded metal lath (copper containing, not galvanized) having
diamond shaped openings on the other side. When secured between supporting members, the supporting members
is attached to each other by wires spaced 6-3/4 to 7-1/4 inches apart passing vertically through the blanket and
should include rows within 2 inches from all edges of the blanket.
6.10 Subject term (key word) listing.
Boiler insulation
Machinery insulation
Metal-mesh
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