Clean and store eye-protection equipment
properly after you are through using it.
HEARING PROTECTION
Although you may not think of hearing protection
as being associated with electrical and electronic
repair, it is. Consider the area in which you will be
working. Hearing loss is a problem in the Navy. Every
day, you may be working with and around noisy
equipment and machinery that could damage your
hearing. In most cases, the damage will not happen
overnight; it will happen slowly.
Your hearing may degrade until you will not be
able to hear the softer sounds as well as you could have
if you had worn hearing protection. This is commonly
called a hearing threshold shift. It simply means that
the more you are exposed to damaging levels of noise,
the louder normal sounds must be for you to hear them.
You must start now to protect yourself from
hearing loss. OPNAVINST 5100.23 states that all
personnel must wear hearing protective devices when
they enter or work in an area where the operations
generate noise levels of greater than 84 decibels. If you
are in doubt about whether a noise level is high enough
3-13
Step
Action(s)
1
Secure the input power to the equipment. Use appropriate tag-out procedures, if necessary.
2
Open the equipment to gain access to the capacitors that need to be discharged. Do NOT touch any
exposed terminals, as large filter capacitors can store a lot of energy.
3
Connect the flexible ground strap of the safety shorting probe to the metal chassis of the
equipment, ensuring a good metal-to-metal connection.
4
Hold the safety shorting probe by its plastic handle and touch the metal probe tip to the appropriate
terminals to be grounded. Do NOT touch the metal probe tip or the flexible ground strap while the
probe is in contact with the capacitor’s terminals. Repeat this step two or three times to ensure that
the capacitor is completely discharged.
Table 3-8.—Safety Shorting Probe Procedure
CAUTION
DO NOT OPERATE THIS
EQUIPMENT UNTIL SPECIAL
INSTRUCTIONS BELOW ARE
THOROUGHLY UNDERSTOOD.
NAVSHIPS 9890/5 (REV. 2070) (BACK)
SERIAL NO.
FCf03006
Figure 3-6.—CAUTION Tag (NAVSHIPS 9890/5).
DANGER
DO NOT OPERATE
SYSTEM COMONENT IDENTIFICATION
DATE/TIME
POSITION OR CONDITION OF ITEM TAGGED
SIGNATURE OF PERSON ATTACHING TAG
SIGNATURES OF PERSONS CHECKING TAG
SIGNATURE OF AUTHORIZING OFFICER
SIGNATURE OF REPAIR ACTIVITY REPRESENTATIVE
DANGER
DO NOT OPERATE
OPERATION OF THIS EQUIPMENT WILL
ENDANGER PERSONNEL OR HARM THE
EQUIPMENT. THIS EQUIPMENT SHALL
NOT BE OPERATED UNTIL THIS TAG
HAS BEEN REMOVED BY AN AUTHOR-
IZED PERSON.
NAVSHIPS 9890/6 IRev
1 (FRONT) {FORMERLY NAVSHIPS 50091
S/N 0105-641-6000
FCf03007
Figure 3-7.—DANGER Tag (NAVSHIPS 9890/8).
