Illustration 3-18: Outside Dielectric Break (Customer-supplied)
8.7.3 Vent Exit
WARNING
CRYOGENIC BURNS OR ASPHYXIATION
DURING A QUENCH, EXTREMELY COLD GAS OR PARTICLES ARE
RELEASED FROM THE CRYOGENIC VENTING SYSTEM. A QUENCH MAY
OCCUR AT ANY TIME.
ENSURE ACCESS TO CRYOGEN VENT EXHAUST AREA IS RESTRICTED
AND THE RELEASED GAS DOES NOT REENTER THE BUILDING. REFER TO
THE SPECIFICATIONS BELOW.
1. An exhaust area in front of the vent 20 feet (6.1 m) long by 15 feet (4.6 meters) wide
(Illustration 3-19):
a.
The facility is responsible for any exhaust area barriers, restrictions, and warning signs
b.
Must not include air intake vents to prevent cryogen exhaust from reentering the facility
c.
Must not include any personnel, building components, or objects (movable or stationary)
2.
For a rooftop exit:
a. Use either a horizontal exhaust vent with a 90° elbow and minimal pressure drop or
other low pressure drop, high flow rate roof cap
SIGNA Voyager Pre-Installation
Direction 5680008–1EN, Revision 2
Chapter 3 Magnet Room 91
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