Procedures for handling, and flight film acceptance testing through original film processing to the duplication of the original film, are presented

Bourque, P. F.

English

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https://ntrs.nasa.gov/search.jsp?R=19750020884 2020-03-22T19:53:14+00:00Z
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rrril HANDLING PROCEDURES
FOR
SKYLAB 5-056 EXPERIMENT
These procedures have been reviewed
and are approved.
Dr:^ James Mi7.ligan, SGL-S° u/'L'
Principal Investigator
(N A SA-CH-141920) FIL@ HANDLING PROCEDURES
	 N75-28957
FOR SKYLAB S-056 EXPEFIMENT (Technicolor
Graphic Services, Inc.) 12 p HC 53.25
CSCL 05E
	 Unclas
G3/82 31385
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TABLE OF CONTENTS
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Page
Flight Film Certification Tests........... 1
Sensitometric'Preparation of SYylab S-056
Film ......................................	 1
Photographic ProcesTing Controls.........,	 9
Postprocessing inspection of Original
Mission Film......
	 ..............	 10
Section
1.0
2.0
3.0
4.0
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1111111
FILM HANDLING PROCRDURES
FOR
SKYLAH 5-056 CY.13rR114ENT
ItITRODUCTION:
This document presents step-by-step procedures for handling
the S-05G film, type SO-212. It documents the procedures and
controls for each stop of the film flow within the Photogxaphic
Technology Division from the flight film acceptance testing
through original. film processing to the duplication of the
original film.
ii
IMM HANDLING PROCEDURES
FOR
SKYLAB S--O5G EXPERIMENT
1.0	 Flight Film Certification Tests
1.1
	
The Photo Science Office of the PTD shall conduct
a certification and acceptance testing of each new
SO-212 film emulsion received. The test shall assure
that the film is as the manufacturer and the Marshal].
Space Flight: Center purchase order specified and is
within tolerance. The criterion for the certification
test is the manufacturer's specification. The sensi-
tometric plot made by the PTD shall be within the
data point parameter specified by the Principal In-
vestigator. and manufacturer. Film from each lot will
be selected at random and the following physical and
photographic parameters measured where applicable and
es :7 .ntial .
1.1.1 Length - when large spools of film are recei=.ed, the
manufacturer's spooling data are accepted as correct
verification.
1.1.2	 Thickness
1.1.3	 Width
1.1.4	 Integrity (scratches, emulsion and/or base imperfections)-
This parameter is particularly important for this film
type and will be evaluated by examining unprocessed and
processed raw stock.
1.2	 Sensitometri.c measurements
Because of inherent subtle changes unique to every
emulsion coating, continuing sensi.tometric measurements
are necessary. The proper environment will minimize these
changes, but will not prevent them. Additional informa-
tion concerning sensitometric measurements can be found
in Photographic Technology Division Quality Control Pro-
cedures.
2.0
	
Sensitometric Preparation of Skylab S-056 Film
Establish pre- and postsensitometric preparation of the
S-056 experiment film. Steps 2.1.1 through 2.1.9.1
will be accomplished upon availability of the mission
film and before loading of the flight magazine(s).
i
2.1	 Precalibration Handling
i.ach roll of flight film will be identified by number (1,2,
3,....n) by a PSO representative upon arrival at PTD/JSC.
NOTE: EXTREME CARL WILL BE TAKEN IN HANDLING THE SO-212
FILM DUE 1110 ITS SENSITIVITY TO PRESSURE. THE FILM
WILL, AT ALL TIMES, BE CARRIED AS A "PANCAKE" TO
PREVENT TELESCOPING.
2.1.1. Tile raw stock will be carefully removed from the can and bag
(i.n the dark), placed onto a film-spool.-flange and then onto the
film rewinds on the table of a laminar flow bench. The film will
unwind in a counterclockwise direction when correctly placed on
the right side of the rewinds with the flange facing the rear wall
of the borsch.
NOTE: THE FLIGHT FILM IS WOUND EMULSION OUT,
2.1.2 Carefully remove the piece of tape which retains the integrity
of the spooled film.
2.1.3 Due to the possibility of manufacturing handling marks on the
i	 head end of the roll, ten feet of film will be removed and
identified for white light inspection. Cut the sample footage,
identify by the roll number from which it was taken, and lay it
aside.
2.1.4 Advance (from right to left) the unsecured and and attach it to
a S-056 film core located on _he left rewind. The film core will
be mounted on the rewind with a film flange so that the open
side of the core is facing the side of the flange which is facing
the operator.
Two samples (Emu"sion Out), one 25-foot section and one 35-foot
section from each prime and backup roll.,will be removed utilizing
this rewind configuration.
Remove each sample from the rewind and place in its light-tight
bag, then into the can provided by MSFC, and seal the can with
black vinyl tape.
(Twelve 35mm S-056 film cores are required'to secure the 25 and
35-foot test sections from the prime and backup S-056 film
loads.)
2.1.5 Secure each unsecured section of film with tape.
2
33'
Section C
3'
Section B
4'
Section A
2.1.6 Upon completion of the above sampling, a 10-foot section will be
removed and stored for PSO testing and 11:ouston Controls.
After the sampling has been concluded, carefully return the
rawstock to its appropriate container and seal with black vinyl
tape.
2.1.7 Each 10-foot section will be identified according to film,type,
load, and date loaded.
2.1.8 The load will be identified as follows:
Load No. 1	 ( L-1) Magazine 208
Load No. 2	 (L-2) Magazine 208-1
Load No. 3	 (L-3) Magazine 208-2
Load No. 4	 (L-4) Magazine 208-3
Backup Load No. 1	 (BL-1) Magazine 206-3
Backup Load No. 2	 (BL-2) Magazine 21G-1
Backup Load No. 3	 (BL-3) Magazine 216-2
Backup Load No. 4 	 (BL-4) Magazine 21G-3
2.1.8.1 The can labels will be as follows:
Primary Load:
Example: L-1/S-05G/month-day-year/SO-212/L]mulsion No.
Backup Load:
Example:
	
BL-1/5-056/month-day- ,year/S4. ',.5'/Emulsion No.
2.1.9 Each of the MSFC Test Sections will be sent to MSFC for pre-
mission calibration application. The 25-foot sample section will
be returned to PTD, on a 5-056 film core, to be incorporated in
the flight and backup magazine loads.
2.1.10 Each 10-foot section retained at PTD will be tested for its
sensitometric characteristics and physical integrity as follows:
w
Sensitometric
Test
Footage
Houston
Post	 Pre
Control
"White Light"
Footage
t
m
t,
d I
2.1.10.1 Section A
This section will be used to test the sensi.tometric character-
istics of the material. Three strips, each 1G inches in
length, will be exposed and processed according to the exposing
and processing procedures detailed in Sections 2.2 and 3.0 of this
document. The results will be evaluated and reported.
2.1.3.0.2 Section H
This section will be inspected in white light for physical
anomalies. An evaluation report will. be  written and a copy
of this report forwarded to the cogni.vanL personnel at MSFC.
This report will include a copy of the sensitometric evaluation
report (Section 2.1.10.1).
2.1.10.3 Section C
This section represents that area to be used for the Houston
Control. Sensitometry will be applied per Section 2.3 of this
document. The Control will be double canned, sealed with
black vinyl tape, and appropriately identified by film type,
experiment, and date sensitometry was applied. The can will
then be stored at room temperature.
2.2	 Sensitometry Application on Flight Roll - to be accomplished
prior to flight magazine(s) loading.
3	
2.2.1	 Carefully remove the flight rawstock from the bag and can and
place it onto a film-spool-flange with the open side of the core
facing the flange. Place the rawstock on a rewind located on
a table to the right of the sensitometer so that the film will
come off the roll in a clockwise direction- emulsion down.
Advance the unsecured film (from the supply core) to the left
edge of the sensitometer table and hold secure. Grasp the film
at the table's right side, advance it to the table's left side,
and hold it secure.
2.2.2 Grasp the film on the right,side, of the sensitometer tablet,
and advance it to the table's left edge. (This will position
the premission sensitometry 6 feet in from the leading edge of
the film.)
2.2.3	 Place the film, emulsion down, on the step tablet. Carefully
lower the pressure platen and expose the film to the following
conditions*:
r;9^1
MSPC** PTD KSC
Pre Leader Pre- Checkout Mission
n Sensi
F 25to60' I — 5' —E• <— 51 —> <: 25'	 > F —	 TBD
HEAD
, I
Step Tablet	 772-150
Illuminant	 2550°K
Exposure/sec	 1/50
Filter
	
5500°K
Bulb	 72-3-2269
* This setup step must be accomplished before the room is
darkened.
2.2.4 After exposing the film, reai .se the tablet pressure platen and
advance the film (from right to left) the length of the step
tablet plus approximately four inches. Again place the film,
emulsion down, on the tablet; lower the platen and expose.
2.2.5 After exposing the film, raise the tablet pressure platen and
carefully rewind the film ont o the supply core.
2.2.6 The pre- and postmission sonsitometry will be ap plied to the S-056
mission films in the following 'configuration:
Imagery
Pos
stP o
t
Post TestPCOtage
-
..S
<	 50 a
_Calibr k o-L-
<-25 to GO '> TBD	 >
^	 t
5
E	 I.
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Premission:
IIEAD	 LEADER	 PRE	 PRE
--4"-1
-
10"— I-Au1' 1011—•I
Postmiss'ion:***
POST
	=ST - 1 TEST FOOTAGE	 I TAIL
f— 10 11 — 1 .4'1 — 10" — 1'-2' — --- TAD
* KSC camera checkout will be accomplished on the first load
only, Magazine No. 208.
a
** MSFC Premission Calibrations will . be wrapped around the flight
takeup core.
**'* NOTE: Upon downloading the 5-056 magazine, the test footage
will be removed from the flight roll, double canned, sealed
with black, vinyl tape, and properly identified.
This footage will be used to determine the extent to which
the radiation has effected the sensitometric characteristics
of the flight film.
6
P
2
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2.3	 HOUS?f"V CONTROL - Pro- and postmission sensitometry
(Pritn^ry and Backup Loads)
Following the application of the sensitometry on the
mission film, the premission sensitometry will be
applied to the film strips retained for the Houston
Postmission	 PrOITI iea	
of
° T.D. Punch
The exposure configuration will be the same as that
used for the mission film.
The postmission sensitometry application will utilize
the same procedures.
2.3.1	 Upon completion of the above step, the strips will
be returned to their respective cans, sealed with
black vinyl tape, and stored at room temperature.
2.4	 Postmission Sensitometry
2.4.1	 The S-05G flight magazine will be visually inspected
and the results recorded when delivered to PTO.
2.4.2	 The flight magazine will Chen be taken to Room 248B
(within PTD) where it will be downloaded and post-
mission sensitometry applied (Re: Sections 2.2.3 and
2.2.6).
Prior to the sensitometry application, an estimate of
the footage remaining on the supply side of the
magazine will be made. If there is found tp be film
on the supply side, the film will be cut to insure that
a minimum amount of unexposed film (approximately 5
feet) is retained on the flight footage to enable the
PTD postmission sensitometry to be applied.
Following Sections 2.1.1 through 2.1.8, a 25-foot section will
be removed from the remaining supply _footage and sent
7
IIM%D
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2.4.3
2.4.4
2.5
2.5.1
to MSFC for the postmission calibrations. This test
footage will be processed with the flight film upon
return to P'TD.
The remaining footage will be utilized in any mission
film preprocessing teats deemed necessary by PSO and
the Principal Investigator..
Each roll of film (mission and the remaining supply
footage) will be separately canned. The cans will be
sealed with black vinyl tape and idontified.
The mission film will be turned over to the cognizant
NASA personnel of the PTD for distribution to the
.appropriate laboratory (MPL).
Until the mission film is processed, it will be
stored in an approved bonded storage cold vault (Room
22GA, Building 8).
Preprocessing Preparation of the Flight film
The sequence for preparation and makeup for processing
of each ofthe flight rolls shall be as follows: (Per-
formed with room relative humidity 55 + 5 5b).
DUE TO THE MAKl,l1P SEQUENCE, IT WILL BE NECESSARY FOR
EACH ROLL TO BE REWOUND. THE OrLRATION WILL BE UNDER-
TAKEN WITH EXTREME CARE. NO MOTOR DRIVEN REWINDS WILL
BE USED. ALL POSSIBLE PRECAUTIONS WILL BE TAKEN TO
INSURE THE LACK OF STATIC ELECTRICITY DISCHARGE AS THE
FILM IS REWOUND.
.
Machine Process Houston MSFC*
Leader Scratch Control Control Prcmission Mission
Strip Strip Calibrations 1
Film ^	 MSFC *I Process	 I	 Machine
Post-mission	 Control'	 Leader
Calibrations	 Strip
* NOTE: This section will include flight and/or flight
simulation calibrations.
8
.	 E
1
q	 A
In the event a short lenryt-h r' film is cut from tho
prime roll and processed, .ne above makcnp will be
followed for the shorl, length also with the exception
that the Houston Cn;,trol will be retained and j.jro-
ceased With the bulk of the mission film.
All splices will be tape splices. L10 roinforcing
staples will. be used with the tape.
3.0	 Photographic processing Controls
Thi.a section presents the processing requir.cments for
the original film from the S"056 experiment.
3.1	 Process Certification
3.1.1
	
	
Lach primary processing rtolution Will bet chemical.lr
analyzed. The analysis will than be compared against
the standards set forth by the PTD Quality Control
Department. if the results are in compliance with the
standards, the solutions will be classified as certi-
fied. if they exceed the preestablished tolerance
levels, they will be remixed and the analytical
procedures repeated before being delivered into the
respective processors.
3.1.2
	
	
For each of the flight rolls to be processed, a series
of five sensitometric control strips of the flight
emulsion urill be processed. At the completion of the
processing, the strips will be read on the MacAeth
TD217DII densitometer, the points averaged (step by
step), and the resultant average plotted. At this
point, the resultant plot will be compared to a pre-
established AIM (or process control) curve. Figure 1
represents the sonsitometric curve for the process
condition to be used for the flight films. In the
event adjustments to the process are required, another
series of tests are run until the average is within
tolerance.
3.1.3
	
	
Appropriate procedures will be followed for mechanical
certification of the processor.
3.1.4
	
	
Final Approval on film and chemistry certification will
be made by the NASA and Technicolor personnel of PSO.
9
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4.0 POntprocessing Inspection of Original 14issxon Pilm
Upon completion of procanning of each roll of original
film, PTD postinapecL• ion procedures will be followed
and an evaluation report: written.
4.1 Procedures
4.1.7. Personnel handling original film must be completely
outfitted i.n clean room attire, including hats, mauhn
and gloves.
4.1.2 The original film is received from the processor, tail
out.
4.1.3 Flind the original film above a light table, cmulsion
up, onto another 35mm core.
4.1.4 The inspector notes and records on the insfecti,.:,
sheet all physical defects, camera malfunctionu, per-
tentage of fog, and general quality of the original
f.•ilia.
4.1.5 Upon completion of tbo iniillgction, t1l1n the inspgctign
shoat over to the supervisor.
5.0 Duplication
5.1 The standard products produced for dissemination will
be second generation direct negative transparencies.
Third generation positives (produced from a direct
negative) will be limited to special requests..


Film handling procedures for Skylab S-056 experiment

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