MIL-STD-1623 Fire Performance Requirements And Approved Specifications For Interior Finish Materials And Furnishings Naval Shipboard UseThis design criteria standard provides fire performance requirements and approved specifications for various categories of interior finish materials and furnishings for use on Naval surface ship and submarines.

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Category

Material

Specification

Fire test

Test limits

Deck

7/

coverings

continued

Magnesium aggregate

MIL-D-18873

FED-STD-501, method 6411

Char length

3 inch MAX

Combustion time

4.0 minute

MAX

Ignition time7/

20 sec MIN

Electrical grade mat or sheet

MIL-DTL-

155626/

ASTM E648

Critical radiant flux

0.45 w/cm2

MIN

ASTM E66220/

Smoke density

450 MAX

Carpet

Commercial

ASTM E648

Critical radiant flux

0.45 w/cm2

MIN

ASTM E66220/

Smoke density

450 MAX

Spray-on non-skid

MIL-PRF-

24667

ASTM E648

Critical radiant flux

0.45 w/cm2

MIN

ASTM E66220/

Smoke density

450 MAX

Powder coating

MIL-PRF-

24712

ASTM E162

Flame spread

20 MAX

Dripping

None

Interior cosmetic polymeric

MIL-PRF-

24613

ASTM E648

Critical radiant flux

0.45 w/cm2

MIN

ASTM E66220/

Smoke density

450 MAX

Deck tiles, wear resistant

MIL-PRF-

32170

ASTM E648

Critical radiant flux

0.45 w/cm2

MIN

ASTM E66220/

Smoke density

450 MAX

Deck coating, high durability

MIL-PRF-

32171

ASTM E648

Critical radiant flux

0.45 w/cm2

MIN

ASTM E66220/

Smoke density

450 MAX

Insulation

Insulating board

MIL-I-742, Type I

(faced board)

ASTM E84

Flame spread index

25 MAX

Smoke developed index

15 MAX

Thickness

14/

Type I (Core only)

46 CFR 164.009

Pass8/

Type II (unfaced board)

46 CFR 164.009

Pass8/

Pipe insulation

MIL-I-2781

ASTM E84

Flame spread index

0 MAX

Smoke developed index

0 MAX

Pipe insulation

MIL-PRF-

22344

ASTM E84

Flame spread index

25 MAX

Smoke developed index

50 MAX