Accession Number : ADA321653

Title :   Smoke Leakage Through Class A Boundaries.

Descriptive Note : Final rept. Oct 93-Jun 94,

Corporate Author : WORCESTER POLYTECHNIC INST MA

Personal Author(s) : Sheppard, David T. ; Aittaniemi, Karl W.

PDF Url : ADA321653

Report Date : JAN 1997

Pagination or Media Count : 72

Abstract : This report describes the testing and analysis of smoke leakage through fire doors, fire dampers, and fire stops while verifying their fire endurance meets International Maritime Organization (IMO) requirements for Class A. The report includes descriptions of the test procedures followed, the assemblies tested, and the results obtained. The purpose of this project was to develop data that the United States Coast Guard could use when addressing a regulatory discontinuity in the fire test requirements for Class A divisions. Regulation 3.3 of Chapter 11/2 of the 1974 International Convention for The Safety of Life At Sea (SOLAS) requires that Class A divisions be 'constructed as to be capable of preventing the passage of smoke and flame to the end of the one-hour fire test'. The standard fire test evaluates the passage of flame by use of a cotton wool pad. It has no provision for determining the passage of smoke. An objective of this project was also to develop a smoke leakage test protocol and to identify acceptance criteria to complement the standard IMO one hour fire tests for Class A divisions. Tests were conducted on seven (7) fire doors, two (2) fire dampers, and two (2) fire stops. All samples tested were found to pass the one hour fire test without permitting the passage of flame past the door. Two A-15 rated fire doors were tested, and both marginally failed the thermal transmission requirement for the A-15 rating. All other samples were found to meet the acceptance criteria when applicable to the sample rating. All samples permitted more leakage after the fire test than was allowed before the fire test. The report provides comparisons of leakage rates before and after the fire tests.

Descriptors :   *SMOKE, *LEAK DETECTORS, *COAST GUARD RESEARCH, *SHIP FIRES, *FIRE SAFETY, TEST AND EVALUATION, REQUIREMENTS, DAMPING, RATES, TEST METHODS, ENDURANCE(GENERAL), SAMPLING, FLAMES, BULKHEADS, ACCEPTABILITY, DOORS, HEAT TRANSMISSION.

Subject Categories : Marine Engineering
      Safety Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE