Radioactive Material Identification 502
33-51-41Page 202 Figure 201 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Aug 15/80
B. Equipment and Materials
Equipment Number Manufacturer
(1) Beta Light Comparator or P/N CAN/DB/45-2 Self Powered Lighting 8 Westchester Plaza, Elmsford, N.Y. 10523
Spectra Spotmeter UBD 1 P/N 1510D UB 4 Calibrated at Photo Research 3000 N. Hollywood Way Burbank, CA 91505
100 microlamberts
*(2) Spectra Spotmeter P/N l5025 with PS Photo Research
*(3) Photometer Model l505 UB Photo Research Battery Pwr Sup Model BPS-l4 Photo Research Power Supply Model CC-125-PS Photo Research
* Optional for items in par. (1).
NOTE: Photometer internal luminous source must be calibrated at 100 microlamberts to provide accurate comparison.
C. Examine sign for physical damage. If sign is damaged, replace.
WARNING: CRACKED OR BROKEN SIGNS REQUIRE SPECIAL HANDLING TO AVOID ANY POTENTIAL RADIOLOGICAL HEALTH HAZARD CONDITIONS. REFER TO PAR. 3 FOR HANDLING PROCEDURES.
D. Brightness Measurement
WARNING: TO AVOID RADIOLOGICAL HEALTH HAZARD POSSIBILITY REFER TO PAR. 3 FOR HANDLING PROCEDURES.
NOTE: For signs with luminescent letters, focus photometer on center of letters. For signs with opaque letters, focus photometer on luminescent background adjacent to letters.
(1)
For measurement with a comparator, place the comparator baseplate flat on the portion of the sign to be measured. Compare the brightness of the sign portion seen through the viewing aperture with the calibrated source to determine if sign brightness satisfies requirement of 100 microlamberts.
(2)
For measurement with a meter, hold photometer in front of sign and focus on luminescent area. Read brightness measurement on meter to determine if sign brightness satisfies requirement of 100 microlamberts.
E. Replace sign, if any area of sign fails to satisfy brightness requirement.
Oct 20/84 33-51-41 Page 203 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
3. Handling Self-Illuminating Signs
A. Equipment and Materials
(1)
Rubber gloves
(2)
Plastic bag to hold sign
(3)
Metal container for sign disposal
(4)
Cushioning material to pack sign in container
B. Replace Undamaged Signs
(1)
Provide conditioned air to airplane.
(2)
Remove mounting screws and remove sign.
WARNING: IF SIGN IS CRACKED OR BROKEN DURING REMOVAL: LEAVE AREA IMMEDIATELY; KEEP AIR DISTRIBUTION SYSTEM OPERATING; AFTER APPROXIMATELY 20 MINUTES REMOVE SIGN PER PAR. C.
(3)
Wrap sign in cushioning material to prevent damage. Place signs in a sturdy container and secure container. Limit each container to a maximum of 100 curries (by radioactive tritium content marked on back of each sign).
(4)
Consult radiation protection personnel who are knowledgeable about radioactive material disposal regulations and procedures or contact The Boeing Company for disposal handling instructions. Sealed container of undamaged signs presents no health hazard. Storage is not critical; however, container should be stored in a well ventilated area.
(5)
Install new sign and check for damage.
(6)
Turn off air distribution system and remove air supply if no longer required.
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C. Replace Cracked or Broken Sign
(1)
Provide conditioned air to airplane.
(2)
Wearing rubber gloves, remove sign, place in plastic bag, and leave bag open.
WARNING: DO NOT HANDLE SIGNS MORE THAN NECESSARY.
(3)
Immediately remove sign and rubber gloves to outside or well ventilated area away from personnel and leave for approximately 2 hours.
(4)
After 2 hours, seal plastic bag and rubber gloves in airtight metal container.
(5)
Consult radiation protection personnel who are knowledgeable about radioactive material disposal regulations and procedures or contact The Boeing Company for handling instructions. Sealed container reduces health hazard in case of broken gas filled capsule in sign. Container should be stored in a well ventilated area.
(6)
Install new sign and check for damage.
(7)
Turn off air distribution system and remove air supply if no longer required.
501
Aug 15/80 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 33-51-41 Page 205
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