. y

I NT E RNAL .LENT E RNORTH AMERICAN AVIATION, INC.

TO • J. -No Small.ADDRESS 554-945(

DS D.Pf

°o Q1,a) "° Rocketdyne, SanSu

ET2•.4 .41 8

DATE . 20 February 1964 .

FROMADDRESS

PHON E

SUBJECT

R. E . Fenton , 596-162J. J . Rary, 596-165J, Blake, 554945Rocketdyne, SanSu

5107

PARTICULATE SAMPLING OF LEM PROPELLANTS AT BRAVO III

Reference : (1) IL, J . Hary to L. Rankin, "LEM Propellant ParticleCount*+Plan of Action" . .

Attachment :

N 1$ 1 -R- 1 "WW P-411

(a) Propellant Sampling Procedur e

In an effort to dispell any confusion regarding the implementationof particulate sampling of propellants in support of the LEM program,a meeting was held on 19 February 1964. Those in attendance wereJ, Hary and L. Rankin representing group 596-165 and the Bravo Area,R. Penton representing Section°596-162 and J . Blake representingD/554+945 , nspection .

The following division of responsibility was agreed upon :

SECTION 5960162

(1) Designate the appropriate procedure (attached) for samplingfor particulate contamination of PTO and Mydyne`in the above

area.

(2) Provide a list of the required sampling equipment .

.Provide a trained man to instruct the operating grouppersonnel in the techniques necessary to obtain representativesamples -or

(4) Provide inter-departmental coordination on the first seriesof Samples.

GROUP 596.4 65

(3)

(1) Take the sample per Section 162 instructions .

(2) Pill out the appropriate section of the propellant contaminationaa.aai sis (P,C .A.) card provided by quality Control .

(3) Arrange for transporting the sample to the appropriate "whiteroom" for analysis .

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ET2-4-412820 February 1964Page 2

DEPARTMENT 554-945

)

(2 )

(3)

Provide the properly cleaned sampling equipment as designated bySection '162;

Analyze the sample per the particle count section of Rocketdynespecification RAO 615",003* Counting particles smaller than 10microns .will not be required and no maximum level of cleanlinesswill be required .

Complete the PCA card and forward results to Supervisor, Test Systems,D/596-162 ; Supervisor, Bravo Area, D/596-165 and G. E. Williams, 596-254 .

R. B . Fenton, SupervisorTest Systems Uni tAnalysis and Equipment Section

BlakeSupervisorTest Inspection

JAM : ji

do : R. J. Koenig 596-162J . A. Mitchell 596-162H. 0. Nelson 702W. R. Nichol 596-160G . E. William 596-254N. E. Yohe 596-16 .5L• RankinF 4 ET2

596..165

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ET2-4-412820 Februarys 1964

SMPLING (D/596-165)Dove the cap from the sample part. Flush exterior surfacesof the port with the appropriate reagent, i .e . free TF for INTOand NAA alcohol for Myclyne .

2 . Open the sample valve and flow 500 HL of the propellant to waste .

3. V:'Ithout touching the sa=le valve , insert the precleaned 5O0 MLbeaker into the flowing propellant stream .

When exactly 100 )4L has been collected, remove the beaker :ram

66

the flowing propellant stream and i.amsediately cover beaker witha precleaned petri dish.

Close the sample valve .

Carry the covered beaker to the processing point . (An area asclose as possible ,, but not aver 50 feet from the sample point .The water aspirator is located in this area. )

NOTE : A man in protective clothing should precede the man withthe sample t V not care than ten feet to assure a clearpath.

PROCESSING (D/596-a65)

.41 Pour the contents of the beaker into the funnel . Immediatelycover the funnel with a petri dish and pull the entire samplethrough the analytical filter by using the separator .

TRlL,VaZ Na (D/596465 )

While maintaining the still covered funnel apparatus in an uprightcondition, transport the it to a Q.C. operated White Roma forprocessing,

MIALYSIS (D/5514-9145)

1 . In the White Roam rinse the walls of the funnel with 25 ML ofthe appropriate clean -rveagent for the propellant.

2. Process and count the filter disc per Rocketdgne SpecificationR O6s5-ao3 .

Record and report all data to the requesting personnel and send acopy to Section 596-162*

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PROPELLANT SAMPLING PROCEDURE

EQUIPMENT

Items

2 ea . Graylite Suit

2 ea . Davis Universal Gas mask w/canister

2 pr. Rubber Gloves

2 pr. Rubber Boots

1 ea . Water aspirator capable of producing .vacuums in eccess of 27" of HG

2 ea, Teflon tube -" O.D. X wall 4 ft . long

Provide By

Operating Group

tltl IY

Ytl IY

YY 4Y

2 ea . Beakers 500 ML marked at 100 M .L. point Quality Control

2 ea . Filter holder Millipore Cat# XXIO004700 Yr Itl

or XX20 047 20 47 'M .M. on'filter discs .

1 ea . Solvent filtering dispenser MilliporeCat .-"XX66 000 00 w/200 M .L. of prefiltered Freon T .F.

I ea. Solvent filtering dispenserrMillipreCat . .#XX66 000'00 w/200 M.L. of prefiltered "N.A,A. Alcohol", (speciallydenatured ethyl alcohol available•aeshell col. ) .

NOTE :

1 . Both of the above processed fluids are available from the white roomtrailers located in the space engine areas .

2, Water to 9perate the aspirator and for flushing in case of spillswill be'required at the processing point not more than 50 ft. fromthe sample point .

. Easy access between the sample point and the'processing point is a

necessity. A man will be required to carry an unsealed beaker of thepropellant between the two points,

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