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Stowage restraint failure
Stored energy device (e.g. mechanical spring under compression)
Vacuum vent failure (i.e. loss of pressure/gas)
Heat transfer (habitable area over-temperature)
Over-temperature explosive rupture (including electrical battery)
High/Low touch temperature
Hardware cooling/heating loss (i.e. loss of thermal control)
Pyrotechnic/explosive device
Propulsion system (pressurized gas or liquid/solid propellant)
High acoustic noise level
Toxic off-gassing material
Mercury/mercury compound
Organic/microbiological (pathogenic) contamination source
Sharp corner/edge/protrusion/protuberance
Flammable/combustible material, fluid ignition source (i.e. short circuit, under-sized
wiring/fuse/circuit breaker)
High voltage (electrical shock)
High static electrical discharge producer
Software error
Carcinogenic material
Hazard Analysis Appendix 1
Edition 5.2 A1.11
EXPERIMENT/TEST EQUIPMENT HAZARD REPORT
Name .......................................................................……..................................................
Organization.........................................................................................................
Phone number :.......................................................................Date :………………….............
Equipment name : ...............................................................................................................
………………………………………………………………………………………….......................
Hazard title : ......................................................................................................................
………………………………………………………………………………………….......................
Hazard Description : ...........................................................................................................
………………………………………………………………………………………….......................
Hazard evaluation :
1. Evaluation of cause n°1
a. Hazard cause :
b. Hazard control(s) :
c. Verification method(s)/status :
2. Evaluation of cause n°2
a. Hazard cause :
b. Hazard control(s) :
c. Verification method(s)/status :
(Note : Continue as above until all Hazard Causes applicable to the Hazard Title have been addressed.
The experimenter should again note that a separate Hazard report is required for each hazard identified in
the Hazard List of this appendix.)
Edition 5.2 A2.1
Demonstration of the Appendix 2
mechanical strength of
structures supporting
airborne experiments
The structures should be made of aluminum or steel sections. The most commonly
used sections are square tubes or L brackets with equal or unequal flanges and rounded
corners. The main framework should in no case be made from perforated sections.
The parts used should be assembled by bolts or rivets with gussets, rather than by
welding or friction systems. The minimum gusset thickness is 5 mm (or same
thickness as the section if greater than 5 mm).
The following pages give a simplified calculation example (sufficient in many cases)
used to demonstrate the strength of a structure. This calculation involves three steps:
1. Determination of the centre of gravity and total weight of the installed equipment
and the structure
2. Determination of the crash resistance of the bay attachments to the aircraft floor.
3. Demonstration of bending strength of the uprights: the bend calculation is performed
on an upright alone, ignoring the shelves and any other stiffening
element. The most unfavorable case is considered, which is 9 g forwards.
Applying this simplified type of calculation the safety coefficients are underestimated.
Furthermore, it does not replace a thorough investigation of all single components
meaning that the resistance of each instrument on its shelf must also be checked.
Demonstration of the mechanical strength of Appendix 2
structures supporting airborne experiments
Edition 5.2 A2.2
Examples of assembly, along with the screw and section characteristics are given at the
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