OPNAVINST 5100.19E, CH A4 Flashcards
There are three methods of controlling hazards.
The first, and preferred, is to prevent the hazard at the design and acquisition stages. The second is to identify and eliminate existing hazards. The third is to reduce the likelihood and severity of mishaps from hazards that cannot be eliminated.
Hazards may be prevented or mitigated during the design and acquisition/alteration processes.
Systems Command (SYSCOM) is responsible for holding design reviews, and developing operating, purchasing, maintenance, and logistical procedures.
An effective
shipboard preventive maintenance program can keep equipment and
material from degrading to the point where it becomes an
operational hazard.
Standard operating procedures (SOPs), instructions, or similar directives that are issued to identify the manner in which work is to be performed can prevent hazards from occurring.
ORM is the process of
identifying, assessing and controlling risks.
The risk of injury or illness may be reduced by replacement of an existing process, material, or
equipment with a similar item having a lower hazard potential.
COMNAVSEASYSCOM/COMNAVAIRSYSCOM should be contacted for substitution approval.
Engineering Controls. This means of hazard control is accomplished primarily through design and advanced planning.
Isolation is the physical separation of a hazard from personnel to eliminate or minimize contact or exposure.
Ventilation. This is the control of potentially hazardous airborne substances through the movement of air.
Two methods are “general ventilation” or “dilution ventilation” and “local exhaust ventilation.”
General ventilation is the
dilution of an airborne substance by mixing it with quantities
of uncontaminated air.
Local exhaust ventilation is the removal of an airborne substance at its source or point of generation.
Local exhaust ventilation is the preferred and more economical method.
Ventilation requirements for airborne substance control must be determined through an industrial hygiene survey.
The hazard abatement program is a process by which identified hazards that are not able to be immediately corrected are recorded and tracked to completion.
Shipboard hazards that cannot be corrected “on the spot” shall be documented in the work-center deficiency log (WCDL)/job sequence number (JSN) log per reference A4-1, if applicable.
Documentation for
hazards shall consist of the following, at a minimum:
(1) Date, time, location, and description of hazard.
(2) Risk assessment code (RAC).
(3) Recommended corrective action to control or
eliminate hazard.
(4) Action taken to implement that correction (e.g.,
who was notified, submitted a 4790/2K, when scheduled for
availability, etc.)
(5) Verification and date hazard corrected/eliminated.
The safety officer should complete a hazard report, using the web-enabled safety system (WESS), per reference A4-3.
The Risk Assessment Code (RAC) provides a measure of the degree of risk associated with a deficiency by combining both the severity of the hazard and the mishap probability.
The mishap probability is the
likelihood that a hazard will result in a mishap, based on an assessment of such factors as location, exposure in terms of cycles or hours of operation, and affected population.
Interim controls may consist of physical barriers, written
instructions, word passed over the 1 multi-channel (1MC), warning signs, or other measures as deemed appropriate.
Interim controls shall meet or exceed minimum necessary requirements to prevent future damage to equipment or injury/death to personnel.
The safety officer shall approve interim controls in effect more than 60 days.
Notify the commanding officer if an unabated deficiency is
classified as critical or serious (RAC 1 or 2).
