Safegate Group safedock, User Manual

Page: 45 / 348

SAFEDOCK®

Safegate Group
Manual Date: 6 February 2015
Chapter: 2 INSTALLATION Version: 2.7
Page 13 of 26
3.1.3 Offset Calculation
The Safedock installation can also be installed according to an offset calculation,
depending on the actual situation at each stand.
Note: It is important to fulfil requirements for an offset installation calculation as
described in the table below. The Safedock unit angle of alignment (perpendicular or
other) must also be carefully considered in relation to the centreline, for example for
system aircraft identification on approach to the stand.
Offset Calculation
The following calculation is for an offset installation:
a = b/6, not > 5 m
The following are variables used in the calculation:
a - Maximum offset mounting distance
b - Closest stop-position with reference to aircraft nose
(distance from Safedock to aircraft nose at stop),
b is also the extension of the centre line.
c - Straight line between aircraft nose and Safedock, centre
of Safedock view.
d - 10 degrees is the maximum angle between centreline
and Safedock unit centre of view.
FIGURE 2.12
OFFSET CALCULATION
3.1.4 Mounting of Support Fixture
A support fixture is required for the Safedock unit to be attached to with clamps, for
example a steel pipe Ø139.7 mm or 5 ½” in diameter. Clamps are supplied for these
dimensions.
Make sure the support fixture is positioned according to recommendations, for
example up to 3 parallel or convergent centrelines at:

± 15 degrees, minimum 2 metres to maximum 65 metres (T1) or

± 9 degrees, minimum 8 metres to maximum 50 metres (T2/3)
from the aircraft nose stop-position, at an angle of maximum 24 degrees from the unit
to aircraft nose stop-position.
The support fixture shall be checked as described below:
a) Using a level, check that the support fixture is vertical.
b) Tighten all fasteners that hold the support fixture in place, for example to the wall
or mast.
a
b
c
d