ANSI CSA NGV 5.1:2016 pdf download.Residential fueling appliances
6.7 Allowable temperatures
a) The manufacturer shall take steps to eliminate any risk of injury caused by contact with, or proximity to, external surfaces of the RFA enclosure, handle, grips, or knobs at high temperatures when tested per Clause 8.13.1. If external surfaces of the RFA system's enclosure, handles, grips,knobs, or similar parts may be contacted by users without personal protective equipment, the manufacturer shall either limit the temperature of these surfaces at all times according to Table 5,Allowable surface temperature, or the manufacturer shall fix guards or protective devices in such a way as to prevent risk of contact that could lead to accidents.
b) Motor temperatures shall be in compliance with the requirements of Table 6, Maximum allowable motor winding temperatures when tested in accordance with Clause 8.13.3.
c) The temperatures on walls, floor, and ceiling adjacent to a RFA system shall not exceed 50 °C (90°F) above ambient temperature under the test conditions of Clause 8.13.2, Wall, floor, ceiling, and component temperatures.
6.8 General manufacturing requirements
6.8.1 The manufacturer shall provide information that:
a) all reasonably foreseeable hazards, hazardous situations, and events throughout the anticipated equipment lifetime have been identified;
b) the risk for each of these hazards has been estimated from the combination of probability of occurrence of the hazard and of its foreseeable severity; and
c) the two factors that determine each one of the estimated risks (probability and severity) have been eliminated or reduced as far as practical through inherently safe design and construction methods.
Note: Guidance for risk analyses can be found in:
a) IEC 60812, Analysis Techniques For System Reliability - Procedure For Failure Mode And Effects Analysis (FMEA);
b) IEC 61025, Fault Tree Analysis (FTA);
c) SAE J1739, Potential Failure Mode and Effects Analysis in Design (Design FMEA), Potential Failure Mode and Effects Analysis in Manufacturing and Assembly Processes (Process FMEA); and
d) MIL 882D.
6.9.3 A breakaway quick closing device, complying with the applicable sections of ANSI/IAS NGV4.4●CSA 12.54, Standard for Breakaway Devices for Natural Gas Dispensing Hoses and System, shall be provided in the hose between the RFA frame and the fueling nozzle. Where hoses are attached to a hose retrieving mechanism, the breakaway quick closing device shall be installed between the point of attachment of the hose retrieving mechanism to the hose and the nozzle, unless the retrieving mechanism separates from the hose at a force less than that of the breakaway quick closing device,does not affect operation of the hose breakaway feature, and does not result in damage to the RFA frame.ANSI CSA NGV 5.1 pdf download.