Barco Njord, User Manual

Page: 64 / 72

R5913592 / Njord 64
RA
TH
PR
HD
SW
SW
SW
SW
(B) TOP VIEW
EXIT
SH
LRZ
RA
PR
TH
HD
(A) SIDE VIEW
RZ
SH
LRZ
RZ
Image 9 – 1
A Side view.
B Top view.
RA Restricted Access location (boot area of projector).
PR Projector.
TH Theater.
RZ Restriction Zone in the theater.
SH Separation Height.
SW Separation Width.
Based on national requirements, no person is allowed to enter the projected beam within the zone between
the projection lens and the related hazard distance (HD). This shall be physically impossible by creating
sufficient separation height or by placing barriers. The minimum separation height takes into account the
surface upon which persons other than operator, performers or employees are permitted to stand.
On Image 9 – 2 a typical setup is displayed. It must be verified if these minimum requirements are met. If
required a restricted zone (RZ) in the theater must be established. This can be done by using physical barrier,
like a red rope as illustrated in Image 9
– 2.
The restricted area sticker can be replaced by a sticker with only the symbol.
P
R
RZ
RESTRICTED
AREA
R
E
S
T
R
IC
T
E
D
A
R
E
A
Image 9 – 2
9.4 HD for fully enclosed projection systems
HD
Hazard Distance (HD) is the distance measured from the projection lens at which the intensity or the
energy per surface unit becomes lower than the applicable exposure limit on the cornea or on the
skin. The light beam is considered (to be) unsafe for exposure if the distance from a person to the
light source is less than the HD.
Risk group 3 Safety