Emergencies lighting

NFPA 101 also requires 5 ft-candles for internally and externally illuminated signs with some exceptions such as approved self-luminous or electro-luminescent signs that provide evenly illuminated letters (Table 6.4). 

NFPA 101 Defined Methods to Illuminate Exit Signs 

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Lighting applications. Emergency lighting. Also BS EN 1838 1999 partially superseded BS 5266-1 1988... 

Lighting applications - Emergency lighting. Also BS 5266-7 1999 Eire blankets. Partially. Superseded BS 6565 1985... 

Luminaires. Part 2 Particular requirements. Particular requirements - Luminaires for emergency lighting. Incorporating Comgendum No. I (AMD I0562J dated December 1999. Inc.CoiT, Superseded BS 4533 Section 102.22 1990, which remains cuiTcnt... 

Generally, electrical control systems are designed Fail-Safe. If power is temporarily lost, unnecessary shutdown of the process may occur. Thus, most safety systems such as fire and gas detectors, Nav-Aids, communications, and emergency lighting require standby D.C. power. 

It is essential to discuss the requirements for stmc-tural protection, compartmentalization, emergency lighting, detection, alarms, call points, suppression, means of escape and signage with the applicable local authority, fire brigade or insurance company personnel before finalizing designs. 

Adequate emergency lighting, small power and 110 V sockets ... 

Items of equipment such as emergency lights may be grouped as one asset, supported by a checklist, which details the numbers, types and locations of the individual units in a predetermined area, e.g. ... 

General area services such as lighting, heating, hot and cold water and air conditioning can be registered in a way similar to that of emergency lights. 

Large stores must be fitted with an emergency lighting system, battery maintained, to enable the routes to the exits to be seen clearly in the event of a mains power failure. 

Small-format lead-acid batteries with immobilized electrolyte are still used in some applications such as hand lanterns. Low-cost six or twelve-volt batteries (e.g. 6 Ah size) are used in child-driven toy cars and other sizes in emergency-light or alarm systems, kept on trickle-charge. Efforts are being made to produce bipolar systems which give 30 percent improvements. 

Coveralls, hard hat, gloves, goggles, safety shoes, a good flash lamp, and low-voltage emergency lighting are basic requirements. 

Electrical failures are by far the most common. The most important safety measure is the installation of emergency lights, w hich will go on as soon as the power fails. Their batteries will automatically be recharged after the pow er comes back. They should be installed even in laboratories where w ork is normally performed only during the day. Such units are fairly expensive, but smaller ones made for home use are now available in hard-W are stores. A check should be made with local authorities as to whether these are permissible for industrial use. 

The simplest way to cope with such potential hazards is to develop a set of instructions about what to do in case of failures. These could be posted, preferably in a place where they can be read with the emergency light. As soon as a failure occurs, laboratory personnel should immediately turn off all affected equipment. In case of an electrical failure, attention should be paid to samples that may be giving off hazardous fumes from the hood. 

Emergency lighting systems based on electroluminescent devices... 

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