Quantcast Lamps. - SB-740-95-200062

 

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APPENDIX C TRC-LSR QUALITY ASSURANCE INSPECTION INSTRUCTIONS
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SB-740-95-20 Shelf-Life Items Manual
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Part II Results of Surveillance Test:
SB 740-95-20
fication shall be per severity indicated with applicable
depending on the number of years from manufacturing
Quality Defect Codes cited in appendix A.
date of the lamp shown on Part Identification Label.
d.  Inspection Methods.
(c) Radioluminous Lamps and radioluminous
(1) For a lot of item, Inspection Level (IL) S-3
lamp assemblies shall not be exposed to direct light for a
applies, (see MIL-STD-105, table 1, Master Sampling
period of 24 hours prior to testing for brightness.
(d) The inspector must be dark adapted
Plan).
(2) For a lot of item, the following Acceptable
before conducting this test. For this procedure, allowing
Quality Levels (AQL's) apply:
the eyes to adjust for 15 minutes in a totally darkened
Majors  Minors
room is sufficient dark adaption.
(e) The  actual  brightness  test  shall  be
0.65
4.0  See MIL-STD-105, table 2.  Acceptance
and Rejection Numbers (Single Sampling
performed in a dark room by placing the test piece
Plan).
approximately 18 inches from the eye.
(f) Sight through the filter at the test piece
(3) Select, in a random manner, a sample
from the lot of Item.
and determine if the test piece is acceptable.  To be
(4) Visually inspect the packaging of each
acceptable, the light must be visible through the filter or
sample item for defects cited in appendix A.
objects illuminated by the light (i.e., scale graduations,
(5)  Remove packaging.
reticles, etc.) must be visible and readable.
(6)  Visually inspect each sample item for
(g) Any  test  piece  not  meeting  this
defects cited in appendix A.
requirement shall be set aside for disposition.
(7)  Visually inspect each item for damage to
CHART 1
illuminated elements such as vials, counter digits, and
AGE OF
NEUTRAL DENSITY
RETEST
reticles. Should damage be found, classify the item as a
LAMP
FILTER
(EXTENDED OR
major defective.
(YEARS)
(OPTICAL DENSITY)
DEGRADED LIFE)
(8)  Conduct manual functional test.  As
2
0.15
NOTE D
applicable, manually function or operate the controls
3
0.10
NOTE C
(knobs, levers, handles), covers, sleeves, extendable
4
NOTE A
NOTE B
legs, etc. In event item fails to function, classify the item
NOTE A.
Inspection for serviceability (i.e., 2 year
as a major defective.
remaining useful life) shall be performed
(9)  Visually  inspect  for  presence  of
as stated in f above except that no filter
radioactive marking, or labeling.  In the event the
shall be utilized. To inspect for extended
marking or labeling is incomplete, i.e., missing license
service life, see NOTE B.
number, serial number, date of manufacture, classify the
NOTE B.
Inspection shall be performed as stated in
item as major defective.
f above except that a neutral density filter
(10)
Reject the lot of Item 1 (i.e., all items
with optical density of 0.10 shall be
having the same level of protection) if the number of
utilized.  Items meeting this requirement
items  classified  as  major  defectives  exceed  the
may be treated as having 3 years
acceptance number of major defectives allowed in MIL-
remaining useful life.
To inspect for
STD-105, table 2 for the appropriate sample size and an
extended service life, see NOTE C.  To
AQL of 0.65, and/or if the number of units classified as
inspect for degraded service life, see
minor defectives exceeds the acceptance number of
NOTE A.
minor defectives allowed in table 2 for the appropriate
NOTE C.
Inspection shall be performed as stated in
sample size and an AQL of 4.0.
f above except that a neutral density filter
(11) A defective item will remain defective
with optical density of 0.15 shall be
until such time as repaired or replaced.
utilized.  Items meeting this requirement
(12) Inspection procedure for Radioluminous
may be treated as having 4 years
Lamps.
remaining useful life.
To inspect for
(a) A  test  to  determine  any  removable
degraded service life, see NOTE D.
radiological contamination should be performed.  This
NOTE D.
Inspection shall be performed to determine
test utilizes a liquid scintillation system.  Operating
a degraded, but usable service life by
procedures and acceptable radiological levels (measured
following NOTE C.
in disintegrations per minute) must be obtained from the
Radiation Protection Officer (RPO).  Do not perform
C-5. Report and Reporting. In reference to the report
further inspections until satisfactory results of this test
and reporting required by paragraph 2-8 the following
have been obtained.
exceptions  apply  to  the  general  instructions  for
(b) The brightness test shall be conducted C-
preparation of the Munitions Surveillance Report (DA
2 using several density filters (Oriel Corporation Model
Numbers 5030 and 5095, or equivalent).  The proper
filter shall be selected as designated in Chart 1,
C-2

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