意味と目的
3.1 A number of laboratory procedures are used to evaluate the effectiveness of flame retardant and refractory treatments and coatings. 一般的に, these methods measure three stages of fire development: (1) ignition; (2) Flame spread (the growth rate of the fire); (3) Fire extent. While all three are extremely important, flame spread has been recognized as a major factor relevant for testing flame retardant coatings.

3.2 Flame spread rating based on test method E84 has gained general acceptance from regulatory authorities, but such large-scale testing is rarely practical during the development or modification of flame retardant-based coatings.

3.3 The test method provides the relative flame spread of the experimental coating using small specimens under conditions established in a 2-foot tunnel. By experimentally calibrating 2-foot tunnels with a similar test method E84 grade flame retardant paint, the results obtained from this test method can be used to screen the suitability of the coating for testing in test method E84 tunnels.

3.3.1 The test method is intended as an experimental tool for evaluating experimental coatings for further development. The results of this test method are not directly related to, or implied by, the results of the test method E84 tunnel.

3.3.2 The results obtained by this test method cannot by itself be used as an accurate predictor of the performance in test method E84 and shall not be used to certify any class of flame spread performance.

ASTM D 3806-98-2019 “難燃性コーティングの小規模評価 (2-フットトンネル法)”

の範囲
1.1 This test method determines the protection provided by the coating to its substrate and the comparative combustion characteristics of the coating by assessing the flame spread over the surface during ignition under controlled conditions in a small tunnel. This sets the stage for comparing the surface combustion characteristics of different coatings without specifically considering all end-use parameters that may affect the surface combustion characteristics under real fire conditions.

1.2 In addition to the experimental flame spread rate, panel weight consumed, time of combustion and afterglow, coke size and index, and expansion height can also be measured in this test. しかし, a relationship between these measures should not be assumed.

1.3 This standard is used to determine certain fire test responses of materials, products or components to heat and flame under controlled conditions by using results obtained from fire test response standards. The results obtained using this standard do not in themselves constitute a measure of fire hazard or fire risk.

1.4 SI 単位で表される値は標準とみなされます。. 括弧内の値は参考値です。.

1.5 この規格は、材料の反応を測定および説明するために使用されます。, 制御された条件下で製品またはコンポーネントを加熱および炎上させる, しかし、それ自体には、材料の火災危険性または火災リスク評価に必要なすべての要素が含まれているわけではありません。, 実際の火災条件下での製品またはコンポーネント.

ASTM D 3806-98-2019 “難燃性コーティングの小規模評価 (2-フットトンネル法)”

1.6 Fire testing is inherently dangerous. Appropriate personnel and property protection measures should be taken when these tests are carried out.

1.7 この規格は、すべての安全問題に対処することを目的としたものではありません, もしあれば, その使用に関連する. 適切な安全性を確立するのは、この規格の使用者の責任です。, 健康および環境慣行を確認し、使用前に規制制限の適用可能性を判断するため.

1.8 この国際規格は、国際規格開発の原則に関する決定で確立された国際的に認められた標準化原則に従って開発されました。, 世界貿易機関の貿易の技術的障壁に関する委員会が発行したガイドラインと勧告.