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TM 750-116
f. Panoramic Telescope M137 (fig. 3-74).
HANDLE WITH CARE. IN THE EVENT
THE RADIOLUMINOUS SOURCE IS
BROKEN, CRACKED, OR SUDDENLY
LOSES ILLUMINATION, DO NOT AT-
TEMPT TO REPAIR. IMMEDIATELY
DOUBLE WRAP INSTRUMENT IN PLAS-
TIC AND NOTIFY THE LOCAL RADI-
ATION PROTECTION OFFICER (RPO).
(1) Counter Box.
(a) Remove counter box inlet port cap.
(b) Perform purging and charging procedure para
2-5.a.
(c) Purge instrument at 7 psig for 5 minutes.
(d) Ensure relief valve closes at 5 psig.
(e) Leak test for minimum of 5 minutes.
Figure 3-74 M137 Panoramic Telescope
(2) Optical Assembly.
(a) Remove optical inlet port cap.
(b) Perform purging procedure para 2-5.a
(c) Purge instrument at 7 psig for 5 minutes.
g. Panoramic Telescope, M137A1 (fig. 3-75).
HANDLE WITH CARE. IN THE EVENT
THE RADIOLUMINOUS SOURCE IS
BROKEN, CRACKED, OR SUDDENLY
LOSES ILLUMINATION, DO NOT AT-
TEMPT TO REPAIR. IMMEDIATELY
DOUBLE WRAP INSTRUMENT IN PLAS-
TIC AND NOTIFY THE LOCAL RADI-
ATION PROTECTION OFFICER (RPO).
(1) Counter Box.
(a) Perform purging and charging procedure para
2-5.a.
(b) Relief valve should open between 3-10 psig.
(c) Purge instrument at 7 psig for 5 minutes.
(d) Ensure relief valve closes between 1-5 psig.
(e) Leak test for minimum of 5 minutes.
Figure 3-75 M137A1 Panoramic Telescope
3-31
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