What is UL 117Ed8 ?

Title: What is UL 1178 and UL 1174? A Comprehensive Guide

Introduction:

UL (Underwriters Laboratories) is a global safety science organization that provides testing, certification, and inspection services. The company has established various technical standards to ensure the safety and performance of various products, including power-operated dispensing devices and microwave ovens. In this article, we will discuss UL 1178 and UL 1174, two of the most important technical standards put forth by UL.

UL 1178: The Safety Standard for Fuel Dispensers

UL 1178 is a technical standard designed to ensure the safety requirements for fuel dispensers used in industrial and commercial environments. These devices, commonly referred to as "fuel dispensers," play a crucial role in various industries such as transportation, construction, and agriculture by efficiently and accurately dispensing fuel, such as gasoline or diesel, to vehicles or equipment.

The primary objective of UL 1178 is to ensure the safe operation of fuel dispensers, preventing hazards such as fire incidents, explosions, and environmental contamination. To achieve this objective, the standard sets out specific safety measures, performance criteria, and design guidelines that manufacturers must adhere to in order to obtain UL certification for their fuel dispensing devices.

Key Requirements of UL 1178:

1. Electrical Safety:

a. The device must have an adequate electrical circuit breaker to prevent overheating and electrical fires.

b. The device must have an earth connection to prevent electrical hazards.

2. Fire Prevention:

a. The device must have a fire-resistant design to prevent fire incidents.

b. The device must have a fire-extinguishing system, and the extinguisher must be easily accessible.

3. Explosive Prevention:

a. The device must have an explosion-resistant design to prevent explosive incidents.

b. The device must have a pressure relief valve to prevent internal pressures from building up.

4. Environmental Protection:

a. The device must be made of non-corrosive materials that can withstand harsh environmental conditions.

b. The device must have an easy-to-clean design to prevent environmental contamination.

UL 1174: The Safety Standard for Microwave Ovens

UL 1174 is a technical standard put forth by UL to ensure that microwave ovens meet certain safety and operational criteria. These appliances are essential in many households and commercial settings and can pose a risk of fire, electric shock, and other hazards if not properly designed and constructed.

The primary objective of UL 1174 is to minimize the risk of fire, electric shock, and other hazards associated with microwave oven usage. The standard focuses on various aspects such as electrical components, radiation emissions, insulation, and overall construction quality to guarantee safe operation for consumers.

Key Requirements of UL 1174:

1. Electrical Safety:

a. The device must have an adequate electrical circuit breaker to prevent overheating and electrical fires.

b. The device must have an earth connection to prevent electrical hazards.

2. Radiation Emissions:

a. The device must have a radiation emission limit to prevent exposure to microwave radiation.

b. The device must have a label indicating the safe distance from the device.

3. Insulation:

a. The device must have adequate insulation to prevent skin contact with the device's components.

b. The device must have a label indicating the recommended insulation thickness.

4. Overall Construction:

a. The device must have a fire-resistant design to prevent fire incidents.

b. The device must have a pressure relief valve to prevent internal pressures from building up.

Conclusion:

UL 1178 and UL 1174 are two crucial technical standards put forth by UL to ensure the safety and performance of various products. By adhering to the requirements of these standards, manufacturers can minimize the risks associated with their products, protecting the health and well-being of consumers.