Pages_from_Steel_Vessel_Rules_Part_3_(Fiber_Reinforced_Plastic_(FRP)_).pdf

Part 3 Hull Construction and Equipment Chapter 4 Fire Safety Measures Appendix 1 Fiber Reinforced Plastic (FRP) Gratings 3-4-A1

5.1.3 Level 3 (L3)

FRP gratings meeting the L3 performance criteria are intended to be satisfactory for use in egress routes and any areas that may require access for firefighting, rescue or emergency operations during exposure to or shortly after exposure to a transitory hydrocarbon or cellulosic fire.

5.3 Fire Retardance

All FRP gratings are to be fire retardant. This can be demonstrated by testing to ASTM E-84, Standard Test Method for the Surface Burning Characteristics of Building Materials with a flame spread rating not to exceed 25, or by meeting the requirements in 3-4-A1/5.5.1 or 3-4-A1/5.5.2 below.

5.5 Flame Spread

All FRP gratings, except those fitted on open decks and within tanks, cofferdams, void spaces, pipe tunnels and ducts, are to have low flame spread characteristics as determined by one of the following test procedures:

5.5.1 Tested to ASTM E-84 with a flame spread rating not to exceed 20; or

5.5.2 Tested to IMO Resolution A.653(16), Recommendation on Improved Fire Test Procedures for Surface Flammability of Bulkhead, Ceiling and Deck Finish Materials and meeting the criteria for bulkheads, linings, or ceilings.

5.7 Smoke Generation

FRP gratings within accommodation, service and control spaces are to have low smoke characteristics as determined by one of the following test procedures:

5.7.1 Tested to ASTM E-84 with a smoke developed rating not to exceed 10; or

5.7.2 Tested in accordance with the IMO Fire Test Procedures Code (FTPC), Resolution MSC.61(67), Part 2 – Smoke and Toxicity Test, and meeting the criteria established for materials used as bulkheads, linings, or ceilings.

7 Structural Fire Integrity Test Procedures

7.1 Level 1

To be qualified for Level 1 (L1), the FRP gratings are required to qualify for Level 3 & Level 2, and in addition to satisfy the test procedures in 3-4-A1/7.1.1 through 3-4-A1/7.1.2 below:

7.1.1 Three (3) FRP grating specimens, after being subjected to the Level 2 testing, are to be unloaded and prepared for impact testing in the manner specified for horizontal specimens in ASTM E-695, Standard Method of Measuring Resistance of Wall, Floor, and Roof Construction to Impact Loading.

The test specimens shall be secured as required in section 8.3 of ASTM E-695 except that the span shall be 200 mm (8 in.) less than the specimen length. A lead shot bag of 40 kg (88 lb) mass shall be dropped once from a height of 2 m (7 ft) such that the point of impact is in the center of the span.

The specimens shall then be uniformly loaded as required by the Level 2 test procedures.

7.1.2 The test is to be considered successful if all three (3) specimens remain intact after being subjected to the impact test and the Level 2 loading test. A failed test is indicated by collapse of one or more of the gratings.

ABS RULES FOR BUILDING AND CLASSING STEEL VESSELS . 2017 309