Table C-1 Prisms and Mirrors

SB 74-95-700

TRC 5OP

will be permitted providing they are stoned or ground and

as superimposed on reticle shall have no more than 3

do not extend more than 1/16 inch into the clear

pieces of dirt or other foreign matter greater in size than

aperture. The presence of chips on the reticle, and

the width of the smallest reticle line or a total of 5 pieces

between the reticle and eyelens will be permitted

over entire reticle surface. Foreign matter on other

provided they are ground or stoned and do not extend

optics shall be treated as pits and digs, but should never

into the clear aperture. Areas that have been stoned or

exceed the size given in the applicable table(s). Should

ground will not cast a shadow on the prism or permit

such a condition exist classify the item as a major

seepage of sealing compound. Should such a condition

defective.

(8) Coating. Optics with not more than 25 per-

exist, classify the item as a major defective.

(5) Scratches and lint. Scratches and lint will be

cent of the coating deteriorated, will be

permitted provided the total effect of such discrepancies

acceptable provided the deterioration is not concentrated

do not exceed that allowed in the applicable table(s)

in a given area.

Crushes or rubs not heavily

cited in paragraph (12). For example, the number of

concentrated are permissible provided they do not

discrepancies may exceed that specified in the table, if

extend into the optic surface. Should such a condition

the dimensions of such discrepancies are proportionally

exist classify the item as a major defective.

(9) Cement separation. Cement separation shall

smaller than that specified in the table(s). Likewise, if

the number of discrepancies are considerably less than

not be permitted. Should such a condition exist classify

that permitted in the table(s), they may be proportionally

the item as a major defective.

(10) Polished surfaces.

larger that the maximum specified in the table. However,

Polished opticle

no discrepancy will exceed the table(s), size 80. Should

surfaces shall show no evidence of greyness or stain.

such damage be found to exceed the table(s), size 80, or

Should such a condition exist, classify the item as a

as described above; classify the item as a major

minor defective.

defective.

(11) Radioluminous items.

Failure of

(6) Digs, pits, and bubbles. Digs, pits and

radioluminous items to provide illumination is a major

bubbles will be permitted in accordance with criteria

defect. Do not open, vent or purge any instrument

given in the table(s) cited below. deviation from the

containing a radioluminous source if there is no

criteria given in the table(s) are permissible as specified

illumination in the assembly. The local Radiological

for scratches cited in (e) above.

However, no

Protection Officer (RPO) must be notified, and the

discrepancy will exceed a size 50. Should such damage

defective unit will be replaced by a serviceable one.

be found to exceed the table(s), size 50, or paragraph (e)

Radioluminous sources shall be inspected by another

above, classify the item as a major defective.

appendix in this SB.

(7) Dirt. With reticle focused by means of the

(12) Tables

eyepiece, the central area of reticle, and/or field lens

Table C-1 Prisms and Mirrors

Eye

Surface

Number of

Size of

Area (see

Number of

Scratch

Maximum

Pits, Digs

Pits, or

note 1)

Scratches

Size

Length

or Bubbles

Bubbles

Up to 1.250

1/5

1.251-2.250

1/4

2.251-up

5/16

Table C-2. Field Lens (see note 2)

Eye

Surface

Number of Size of

Area (see

Number of

Scratch

Maximum

Pits, Digs

Pits, or

note 1)

Scratches

Size

Length

or Bubbles

Bubbles

Up to 1.250

1/8

1.251-2.250

3/16

2.251-up

1/4

C-2