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Identify all controls applicable to the specific hazard
• Definitive
Please provide adequate details to fully describe each control. This
section must specifically identify the precise Hazard Control(s)
utilized (such as redundancy or other design features, safety devices,
warning devices, materials selection, and/or special operation
procedures) that will eliminate, reduce, counter, or otherwise control
the hazard(s) resulting from each Hazard Cause previously
identified. Each Hazard Control must also be backed up by
supporting data such as "as-built" drawings, quality assurance
inspection or certification procedures, schematics, materials lists,
approved test procedures, etc. Referring again to the pressurized tank
example on the previous pages, examples of acceptable Hazard
Control statements for two of the Hazard Causes listed on the
previous page might be :
Hazard Analysis Appendix 1
Edition 5.2 A1.7
a. For Hazard Cause A, a statement that "the pressure
vessel has been designed to sustain maximum expected
operating pressure with a safety factor of 2" would
normally be acceptable.
b. For Hazard Cause B, an appropriate statement might be
"Redundant PRV’s with proper relief pressure settings
will be used on the pressurized tank." Specify relief
pressure setting numbers (e.g., relief valve setting).
If the experimenter determines that he has a potential hazard for
which no suitable Hazard Control is available, the deficiency must be
documented and brought forward as an uncontrolled hazard. This
hazard will then be made visible to appropriate authority for a
decision regarding risk acceptance.
5. Verification Method/Status
This portion of the Hazard Report should identify the verification method(s)
used to demonstrate the effectiveness of each Hazard Control, the
data/documentation/certification which will be provided to demonstrate that
verification has been satisfactorily accomplished, and the status of each
verification data item.
Basically, there are three verification methods which may be used by the
experimenter in satisfying the verification requirements. These are :
a. Test
b. Inspection
c. Analysis (both mathematical and data evaluation, such as review of
design drawings, schematics, test results, etc.).
Hazard Analysis Appendix 1
Edition 5.2 A1.8
Test results will normally be documented by approved or certified test reports.
Inspection results will be validated by Quality Control Inspection Reports,
Receiving Inspection Reports, Acceptance Reports, etc. Analytical results will be
validated by detailed structural stress analyses of the experiment, fracture
mechanics analyses, thermal analyses, etc. When concerning data such as design
drawings, schematics, test results, etc., the term "analysis" should be interpreted
as a detailed, critical review of the drawing and test results that determine if they
substantiate the claims made in the Hazard Control sections.
Referring to the example Hazard Control statements above, the Verification
Method/Status statement for examples A and might be worded as follows :
(1) Hazard Cause A
Verification Method/Status - Test & Analysis
(a) Test Procedure, TP-011-Complete. In Data Pack
(b) Test Report, TR-011-Complete. In Data Pack.
(c) Fracture Mechanics Analysis-Complete. In Data Pack.
(2) Hazard Cause B
Verification Method/Status - Test & Analysis
(a) Acceptance Test Report, ATR-007-Complete. In Data Pack.
(b) Analysis of Plumbing Schematic, SC-P-001-Complete. In Data
Pack.
Hazard Analysis Appendix 1
Edition 5.2 A1.9
D. Mandatory Verification Data for all Experiments
Certain verification documentation requirements are mandatory for all flown
experiments. These are :
1. A structural loads/stress analysis which demonstrates that the experiment
can safely withstand the loads specified in Section 3.1 of this document.
2. A Pressure Vessel Certification document (if applicable) which meets the
criteria specified in Appendix 3 of this document.
Hazard Analysis Appendix 1
Edition 5.2 A1.10
Hazard source Checklist
Flammable/combustible material, fluid (liquid, vapor, or gas)
Toxic/noxious/corrosive/hot/cold material, fluid (liquid, vapor, or gas)
High pressure system (static or dynamic)
Evacuated container (implosion)
Frangible material
Material susceptible to stress corrosion
Inadequate structural design (e.g. low safety factor)
High intensity light source (including laser)
Ionizing/electromagnetic radiation
Rotating device
Extendible/deployable/articulating experiment element (collision)
　
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