This practice covers methods of testing, rating, and installation of internal combustion engine packages used in hazardous areas in marine applications. The purpose of this practice is to thermally rate engine packages, and provide additional installation recommendations to reduce the risk of igniting ignitable mixtures that may be present near the hazardous areas of marine vessels. In this specification, only a marine engine suitable for the service, designed and constructed in accordance with the requirements of 3.2.1, is considered. Thermal rating of the engine is determined by the actual readings of engine and exhausts system temperatures within hazardous areas, as defined by the requirements and references in Practices 2.2 and 2.3 or as designated by the authority.
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1.1 This practice covers the method of testing, rating and installation of internal combustion engine packages for use in hazardous areas in marine applications. The thermal rating of the engine is determined by the actual readings of engine and exhaust system temperatures within hazardous areas, as defined by references in 2.2 and 2.3of this practice, or as designated by the authority having jurisdiction, or both. The goal of this practice is to thermally rate engine packages, and provide additional installation recommendations, in order to reduce the risk of igniting the ignitable mixtures that may be present within the hazardous areas of marine vessels.
1.2 Only a marine engine suitable for the service, designed and constructed in conformance with the requirements of 3.1.2, is considered.
1.3 The system of units in this practice shall be SI (metric) form, along with the standard (English) system equivalent placed in parentheses, for example, 20°C (68°F).
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
F683 Practice for Selection and Application of Thermal Insulation for Piping and Machinery
NFPA70 The National Electric Code (NEC), 2008
EN1834-1 Reciprocating internal combustion engines. Safety requirements for design and construction of engines for use in potentially explosive atmospheres.
CFR46 United States Code of Federal Regulations, Title 46, Shipping
IEC60092 Electrical installations in shipsPart 502: Tankers-Special features
diesel engine; hazardous location; ships;
ICS Number Code 47.020.20 (Marine engines and propulsion systems)
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