Wear protective apparel and approved face shields when handling a lamp with a protective cover. To guard personnel and surroundings against lamps that fail at high operating pressure, high pressure lamps should be operated only in an enclosed housing. These enclosures shall be constructed so as to- Shield personnel and equipment from strong ultraviolet radiation and the high intensity light of the lamp. Protect personnel and the surroundings from the hot fragments of an exploding lamp. Assist in maintaining the proper lamp temperature by appropriately channeling air flow past the lamp.
Incorrect connection can cause lamp failure.
The lamp leads shall be arranged in such a way that there is no danger of their coming together and forming a short circuit in the event of a violent lamp failure. Personnel shall take care to keep fingerprints off the quartz bulb envelope. Skin oils, when heated on the bulb envelope, cause devitrification of the quartz and degradation of light transmittance. Use alcohol to wipe off the quartz bulb immediately after handling. Cotton gloves, flak suits, and face protection are mandatory during this operation.