Specification No . 1530-1for

45,000 GAILLON LIQU DJ HYDRrJc;EN VF:~~FLfor

CTL II Iat

PROPUISION FIELD LI±BOFZATOPISANT& SUSANA, CALIFORNIA

R 0 C K E T D Y N EA Division of North Amezra.can Aviation, Inc .

6633 Canoga Ave . , Canoga Park, Californi a

Facilities Engineering, Department 58 3

Approva'' .s :

L . SkKg s Lra(t. J W+3riderliniChi, :f Faci Ii_ties Engineer t S ~' .f 1 Component s

15 Jan,z=ary 19 63

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HDMSt00008152

Specification No . 1530 . 1

SECTION C

45,000 GAJJLPLN LIQ01D HYDR000N V ;SEL

1, SCOP ; OF WOR K

1 .1. The Builder shall fursis'i all 1.a*,)n-- ., materials ., tools and equIpmc: :nt,and shall perform all. op-rations required to design and con :~_,l.e c the115,000 Gallon Liquid Hydrogen Jessel i .n ac ,--irdance with this specirl -cation and the drawings listed in Section B .

2, CODES ANT) SPECIFICATION S

2,1 The latest edit: ens of the following cod.es and specifications, withtheir latest revisions, shall form a part of this specificat'! on, .

2,1,1. AS_ME; Boiler and Pressure Vessel Code, Sections VIII and IX,

2,1,2 ASTM Standards, Part I, "Ferrous Metals" ,

2,1,_1 ASTM Standards, Part II, "Ncn~.Ferruus Metals" ,

2.1 .4 California Administrative Code, Title 8, General Industry Safety

Orders .

2,1.,5 Electracai Safety Orders, Department of Industrial, Relations ., Stateof California ,

2,1,5,1 Areas immediately adjacent to the new tank must be built under theprovisions of Article 22 of the above :ode. ,

2 .1,6 American Standard Code for Pressure Piping, ASA B31,1 ,

2,1,7 AISC Specification for Asse^ibly of Structural Joints Using ASTM A325Bolts., dated March, 1960 .

3. DESIGN CALCULATIONS AND SHOP DRA'W'ING S

3,1 The Bui lder shall prepare and submit five copies of calculationsrequired to support design of the 45,000 Gallon Liquid Hydrogen Vessel .

3 .1 .1 Design ea?(,.u1ations and cert,,fied foundation bolting information shall .be sutibmritt(--- for approval within 1.5 calendar days after award ofConatl act- ,

3,2 The Builder shall prepare shop drawings of the vessel in accordancewith ILrt•ic.ie VIII, Paragraph 6, of the. Fixed Price ContracL ,

1!5 ,000 GALLON I7+-) i i) H YDrUJ(! N VESSEJ C- l

BNA0521925 3

HDMSt00008153

Specificati ri No . 1.530-3.

3.2 .1 Shop di aw n„s shall be subrd tiled within 30 days after award of Cara'c.xa t ,

3 .2 .2 Shen dr..:wln~s shall si ow+ clim r~.i ;r=9 tolerances, materials fabricat_i.on

ma`.-hods . finishes a and electrical nstailation .

p ' € n c ad inn s sha l be in r.proof c :i_blet' ;, e d dC cul a ,. ~o . s an J. .n , '_ p d d ,3 .3 An L 1.f or-m .

3.3 . 1

3 .11

Calculations and drawings shall carry the stamp of a Me.chaniool

Engineer licensed to practice in the State of Cali.forrd e

The Builder- is cautioned that work accomplished prior to drawing approvalis subject to rejection if it does not comply with the requirements of

the approved shop drawings .

L DESIGN RYQUIREMEN

L .l GENERAL

4 .1.1 The vessel shall be capable of storing liquid hydrogen so that lossdue to heat leak sha'. I not exceed i% in 21: hours with the vesselappro)emat°1y 90% full .

4 .1, 2 External ambient temp-,rature range fcr the vessel shall . be from minas

20 n F to p'?as 1250F 0

11 .1 .3 Both inner and outer vessels shall be marked with the ASIME Code Stamp,

1 .1 .4 The el shall be designed on the bass of containing liquid hydrogen,liquid nitrogen, water or li quid oxygen .

The annular space of the v Cs:sei. shall be capable of evacuation to five

microns of mercury absolute pressure .

11 .1 .6 The inner vessel shall be suspended. within the outer jacket by a lowheat, leak system consisting of metal . rods or cables that will not per-mit lateral movement of the vessel axis and/or rotation of the vesselwithin the design temperature range, The inner and outer vessels,together with the suspension systems and mounting skirt shall becapable of withstanding horizontal . a^celerations of 0 .5G and a verticaldownward acce-ler•ation of 1 .1G with the inner vessel, filled with 1_1quid

o.wen at 9 .5 po a_nc. per gal ion . Accelerations produced by exte,'naTishipping forces shall he provi dad for by approved temporary means ,

4 .1 .7 The inner vessel shall he designed on the basis of not being evacuatedbelow one atmor-IIIere un :ns the a_nn'll ax space is at op ;rating press f0,

4 .1 .8 Both inner and outer vessels shall be of all welde ,d_ const.ruct.._i_on .

lj>%OO C: .A_T,I .OiN' LIQUID HYDROGEN V $ L C-2

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HDMSt00008154

Specification No . 1530--1

4,1 .9 The outer vess_l shat" have one mar:,ray opening with covers to provideaccess from the outside to the in ice of the inner vessel without

d,.stu:b i_r,.g the va ..uu.-n level . in the annular space, Lifting lugs small

be provided on the , ., nwc corers .

i c{ i F° _iii1 an u work +, f o .rrn design e„' .4 .1 .10 The ~:. .- sha_1_ be p_r ov f~pt ;r wo . p .l a for

a ui-d forn _' oad .ng of. 5~ ri ;'s q . ft and access ladder in accordance

with the drawing-; ,

4 .1 .10,1 Platform deck plates shall be removables and fabricated from grating .

Solid decking will not be acceptable .

4,1,11 The ve_:o- shall be provided with adequate lugs for lifting bothhor_zontally and vertically as required for installation .

4,~ 12 The vesse shni.1 have all annular spa . -e vacuum equipment together

with inner vessel inst :rnc°nt.ation located in a full height, double

doer weatherproof cabinet . The vacuum pump shall be located withinthe cabinet so as to be readily retrievable for serrcvi_ci .ng . The cabinet

shall be mounted within 10 feet of vacuum nozzle .

4 .1,1 .3 All vacuum jac.kete.d nozzles shall . have the jacket closed as shown on

the drawi ng s .

4 . :14 Provide Helic .oil inserts in all blind tapped holes .

4 .1,15 Weaning neck flanges with raise=d face conforming to ASA B1605 shallbe used where staiiril ess steel flanges are required unless otherwise

indicated on the drawings .

4.2 INNER VESSEL

4 .2 .1 Internal Operating Pressur-e~ 100 paig with 0 psia external .

4 .2 .2 Internal Design Pressures 110 psig internal with 0 psia external .

4.2 .3 Design Temperature Rang Minus 4230E to plus 100°F .

4, 2.4 Corrosion Ali c ~- :ice ; Zero

4 .2,5 Shell Inside Diameter : 12 feet 0 inches .

4, 2,5 Capao.ity -. 45,000 liquid gallons plus 10% ullage .

Z}x,000 GALLON IIQi~JG HYDf?CL?N pF>`,EL C-3

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HDMSt00008155

Spec-1 fi. cat - on No . 1530 . 1

4 .2 .7 Material-s shall be ne,; stock con orr i_n to their respective designatedspecifications as fO1.tcu

Shell . e e . o . . . o o e o o . . . ASTM A24,0, Type, 321, 347 or 301,

or ASTM 8209, GM110A or GM41A .Plate, Brac-kets and Cure 0 0 . Same as shell .Threaded RLd<, Boats &. Studs . . . ASTM A320 d B6F (cold drawn) .Nuts . . . . . . . . . . . . . . . . . A-STM A1ya -8 c

Turnbuckles . . . . . . . . . . . . AS iY A182 - F304 ,

Pipe . . . . . . . . . . . e . . . . . ASTM 3 .12, Type 304, 321 or 347 .Fitti.rg .se . . . . . . . . . . . . . . AS'1'M AL03, Type 304, 321 or 3 4 7 .FlaTiges . . . . . . . . e e . . . e e ASTM, A182, F304, 321 or 3147 .Gaskets . . . . . . . . . . . . Noted on drawings .Radiation S;•ii eid rig, . . . . . . . . . On approval and as noted on the

drawings .Tubing . . . . . . . . . . . . e . e MIL-T-8,808A ., Type 321 or 347 .Tube Fi ttwrrgs . . . . . . . . . . . . 18-8 Stainless Steel .

11 .2 .8 Belleville washers shall be supplied for all inner shell bolting . Thewashers shall be designed to provide, a constant load over the 75 to-00 per cent deflection range .

4 . 2 .9 The ar_ti-vortex baffle screen for the main discharge line shall beremovable through the mar:way. Al in te :nal bo1Ls shall be safeLy wired .

4,2,10 The four inch fill and eighteen outlet lines within the annularspace shat:-l be fabricated from Schedule 10 stainless steel pipe .

4,2 .11 A loop shall be provided in all liquid lines sufficient to form avapor trap and to allow thermal expansion without expansion joints .

4 .2,12 The six inch Schedule lc instrument and future nozzle shall risestraight through the jacket with provision for expansion by means ofa bellows type joint in the jacket shield as indicated on the drawing .

4 .2 .13 All gasketed closures and corsiections shall be provided with twospare gaskets suitably boxed for storage and marked for identification .

4 .3 OUTER VESSEL

403 .1 External Operating pressure° Atm-o_:pherio

4,3,2 External design pressure (withannular space at zero psia)o Shell and Heads . . . 17 .0 psia

4,3 .3 Design terrperature° Minus 20°F to plus 125° F

403 .4 Operating temperature- ; 70°F

45,000 GALI_U4 LIQ UI.I) HJDROOEEly V SO I, C: . C-4

I IBNA0521925 6

HDMSt00008156

Specification No . 1530- 1

11 .3 .5 Co'roion cs Zero

4 .3 .6 Shell inside di amie t

4.3 .7 Outer- ve-;sel riater .a1 small to a--

She!!-

4 .3 .8

Br -- 'K

Support and Stiffener Rings . . . .Manway Well. . . . . . . . . . . .Manway Well (Inner W-.11 ) . . . . .Pipe (inner Corjico . .ting) . . . . .

. . . . . . . . .Pipe Lead ThroughFi tt.inss . . . . . . . . . . . . .Flanges e . . . . . . . . .Gaskets (Vacuum Pump Connection)eFlange Belting (4ell Cover) . . . .Fterna.l_Manway Flange Gaskets . . .

Bellows . . . . . . . . . . . . . .

Vacuum Piping (E_xtern= l) . . . . . .Vacuum Fittings (External) . . . . .Facuuin Flanges (External) . . . . .Vacuum Gaskets (maternal )Vacuum Tubing . . . . . . . . . . .Vac uwim Tube Fit tinge . . . . . . . .

ASTM A287-C or A212-BASTM A265=•C or A212-B

• ASTM A2n-C. AS 774 A212-B in accordance

with A 300 spe, fica ;ion,ASTM A7 or A283ASTM A21LO Type 32 1 , 347 or 301;ASTM A2110 Type 321 , 347 or 304ASTM A31 2 Type 321 , 347 or 304ASTM A2 4 0 Type 321, 30 or 3O1AS TIM A234 Cr . IIASTM A181 Gr . IINeoprene "0" Ring

. ASTM A193-B 7Neoprene O-RingsLaminated s Convoluted Type 321

or 347 stainless steel .ASTM B88 Type K - Hard drawn

0 ASTM B124 Alloy 12 - WroughtASTM B124 Alloy 1 2"0" RingsASTM B88 Type " L" - Soft Anneal edASTM B124 Alloy 12 - Wrough t

All cold lines penetrating the outer vessel shall have a stainlesssteel spacer disc or sleeves that shall provide a minimum heat pathof 12 inches between the cold lines and the carbon steel surfaces .

5 . INSTRUMENTATION, VACUUM AND E'LF;"TP,iCA•, REQUIRFN-7-, i'S

5 .1 VAPOR PHASE PR_F'SSURE CAUGE

5 .1 .1 A h.clicoid pressure gauge with six inch dial face shall be providedfor-indicating the inner vessel vapor phase pressure . The gungepressure range shall be at least 50% above the design maximum operationpressure of the inner shell . The g,-age shall be redlined at th ema dnurn operating pressure of the inner vessel and shall be equippedwith a plastic face and neoprene "blowout" plug . A Hoke needle valveshall be mounted upstream of the gauge to permit isolation .

45 OOO GALLON LICJID HY SRC : .~;il VESSEL

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C-5

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HDMSt00008157

Specification No . 1530-1

5 .2 VACUUM GA_1IGE (FRiE )

5 .2 .1. A Hastings Modal LV 1S thermocau.pl.e Vacuum Gauge 0 to 100 microns ofmercury absolute shall be used to measure the fine vacuuva of the

ann ;l ar space . The gauge shall be suitable for use with 1.1.0 volt ..

60 e~vcle ._ Provide electrical connector plug for 110V AC systeru .

5 .2 .2 Two Hastings Model I)V=5 Gauge Tubes, 0 to 100 microns, shall . be

mount, :d on the ,essLl complete with cables to conn_c .t to vacuul;a-

ga,gF+ . One shall be mounted on top head of vessel and shall beprotected from weather and brealage by a suitable box with screwed

lid . This tube shall be accessible from the work platforiv . Theother tube shall be mounted on the four i nc:h evacuation line betweenthe manually and the remotely operated vacuum shut off valves .

5 .2 .3 The Builder shall provide the necessary connecting cables between

the Vacuum Gauge and the Gauge Tubes .

5 .3 VACUUM GAUGE (ROU(-"H )

5 .3 .1 A compound Helicoid 15 psig to 30 inch vacuum gauge with a six inchface shall be provided to measure the rough vacuum of the annular

space . Provide plastic face and neoprene "blow-out" plug . Builder

shall provide a Hoke needle value upstream of the gauge to permit

isolation .

5 .4 VACUUM SYSTEM

5 .4 .1 .

1.20V--1

A Kinney KMB 30, KC-5 electric motor driven mechanical boostervacuum pump shall be provided and installed . This pump shallmaintain an absolute pressure of 5 microns of mercury maximum in

the annular space . The electric motors shall be totally enclosed

fan cooled . Both pumps shall be provided with belt guards . Each

motor shall have individual 3 pole over-load protection . Motorsabove 1/2 HP shall be VOVa-3¢ and motors 1/2 HP or less shall b e

5 .4 .1 .1 Initial evacuation of the annular space shall be accomplished witha separate roughing pump supplied by the Builder .

5 .1 .2 One minimum four inch line shall be provided for evacuation of theannular space . It shall contain the following hardware and instru-mentation connections :

5 .4 .2 .? A four inch, Grinnell=.Saunders #21434--16-T, remotely operated vacuumtight valve shall be provided between the pump and the vesselconnections in the four inch vacuum line- to prevent loss of vacuumin the event of power failure while the pump is in operation and themanual shuut-off valve is open . This valve shall be spring loadednormally closed and shall be electrically interlocked so th ::t it will

open only when the pump is runni-o,g. Gaseous nitrogen at 150 psig will

be available within 10 ft . of the boy . Connections to nitrogen service

shall be made by the Builder .

145,000 CGA1; :LCn'~ LI IQ Uif HYD)HOGEN V 55E C -6

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HDMSt00008158

Specification No . 1530-1

9

5,L!,? .2 One four inch, Gri -nel Sa :r~c',~rs #2132-2`,.-T manually operated vacuum

~t valve sha ll be pro ;i.d=od in the vacuum line at, the outlet fromtlg. !

the annular space .

5.11 .2,3 An oil "rap capable of entrapping the full quantity of oil containedin the vacuum pump shall be located in the vacuum line between the

electrica1.Iy operated and -Han ally operated shut-off. valves ,

•

5 .h .? j1 Two, four Inch inte rnal ova cu? t l onr~:.11ter, tubas extend] ng around

the vessel in the annular space shall be provided. The filter tubes

shall be im"ersed in t e insulation and s'-halll prevent the entry ofthe insulation into the evacuation line and vacuum pump .

5 .x, .2 .5 A sintered bronze filter elemant shall be installed between the

manually operated vacuum: valve and the vacuum pump. This filter

shall prevent the passace of any particle larder than 50 microns

in mean diameter and shall have a 10 micron nominal rating .

Minimum filter area shall be 125 square inches .

3 One, four inch Grinnel-Sanders #2L32- =T manually operated vacuumtight valve shall be provided between the roughing pump connection

and the rain vacuum heaier .

5.b .)1 One, 3/8 inch 710 V ~ So'ati .western MU 553 (BC 1!, 8u-1) solenoid

operated valve norrrlal!y open, shall be provided for control cabinet

pressurization . The valve shall be mounted inside the cabinet with

pressure connection outside the cabinet . Pressure source will be by

North American ,

5 .!t . 5

5 .5

5 .5 .1

All vacuum valves shall be mass spectrometer tested in accordance

with Section 9 .1 .2 .

ELECTRICAL EQUIPMENTF1Vr_-

Provide a NEMA XII ontroolcabinet, modified to permit internal

pressurization to pound per square foot (P .S .F.) . Provide a

dead-weight, relief aevice to maintain this pressure ,

5 .5.2 Provide a door-operated switch to close the cabinet purge valve,

when the doors are open, and open the purge valve when the doors are

closed . This switch shall be equipped with an externally mounted

manual. override switch to deactivate purge valve prior to opening

door. (See Paragraph 5 .1! .h for valve) .

5 .5.3 In addition to the cabinet purging requirements, provision shall be

included for pressurizing the cond :it system within the cabinet .

45, 000 GALLON LIQll 1D E DRCCU "" U1 S r,i. C-7

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Specification No . 1530- 1

5 .5 .4 The fo]1or•wing equipment shall also be housed in the cabinet,

(a) One l e5 KVA, 10 11 iC l 2i / {DV Tr< ` ,form r con ecteC to a

ha- circuit, 3 wire circ it. Br ~:,, ake,r tape panelboard . (BreakerRatings 20A, 1 Pole) .

5 .5. 5

5.5 .6

(b) One iacandf scent 100 ,•;att, fixtures with door operated switch .

(c) One De lox recept.acle outlet Hidube11 75_~0,=G with 5211 covere ;•: Para_rplate for Hastings raug .., Re_ rice apl: 5 .2,1 . One

circuit of panel•co and shall servo rnotor controls, one circuitfor instr oocrt,at.ions one circuit for lights, and one sparecircuit .

Provide within the control cabinet a control panel with :position

indicator lights for the remote control valves, Provide facilities

in the control panel for future connections to operate a remnte

control panel in parallel with this onc e

Provide a NEMA VII circuit breaker on the exterior on the control

cabinet . A seal'-off must be installed on the conduit entering the

control cabinet . This breaker shall serve as a main disconnect for

the entire vessel electrical system . Conduit and conductor connec-

tions to this breaker shall be accomplished by the Builder from a

148CV A.C . 60 cycle source at the power panel in the tunnel .

5 .r . All electrical equipment including star'_erss fixtures and aux2liaryequiprient located within the control cabinet shall be Nr.MA Type 1;

lighting fixture shall be Vapor-Tite .

5 .5 .8 All conduit shall be rigid, galvanized, and enameled or lacquered .Eighteen inches of Sealtite type VA flexible conduit shall be usedat motor Junction Box .

5.5 .9 Junctions Boxes and conduit fittings shall be gasketed .

5 .5 .10 All conduits entering control cabinet shall be provided with Myers

.Scruti.te Hubs and conduit seals filled with compound .

5 .5.1.1 Conductors shall THd, No . 12AWG minimum . Color coding shall bered, black, blue for phase wires .

5 .5.12 Laminated plastic nameplates shall- be provi ded for electrical

equipment and instrumentation devices designating functions . Letters

shall be 3/16 inch, black, engraved .

5 .5 . .13 Provide typewritten directory for circuits supplied from panel-board .

1Jr,000 G9T-;: I i_l UII) IYJ,Cb B VES F~` . c

BNA0521926 0HDMSt00008160

,y ✓ ,G~~ ✓f Spec'_ ` ica~l - or N'a . 1530-1f

55,6- --Z L:II) i VB S'-SiEM 85 .6 .1 A Barton Model 211 alarm o died liquid level indicating pneumatic

transmitter with 0 to 110,21ri(-,h water scale and pulsation de to r ere

shall be sup,-lie i for use on liquid hydrogen service and shall be

calibrated - n gallons as 1 Vr~ _ as inc~!--s of water . It shall beprovided with a 3 valve '0-id consisting of 2 block valves and

1 by-p_ ss valve ._

5 .7 All dial gauges shall be supplied with Ashcroft #11 .06S pulsation

dampers ,

6 . WELr )IN G

6.1 All welding and welder qualification procedures shall be performed

in accordance with the a ppli cable paragraphs of the ASME Code,

Sections ;TIII and IX for the material being welded .

6 .1 .1 Nor,,h American at any time may demand requalifica_tion of the welders

by the Builder, such expense to be borne by the Builder .

6 .2 'Melds of carbon steel to stair.less steel shall be made with E-310

electrodes .

6 .3 Root passes of welds on corrosion resistant steel components shall

be made by inert gas shielded arc method with helium or argon the

shielding gas . Subseq .:ent passes may be Trade by manual shielded are

or the inert gas shielded are method . An inert gas back purge shall

be maintained during all welding of stainless steel until the weld

is cool .

6. Gas welding will not be permitted ,

6.5 All welding operators shall have their qualification certificates

available for inspection by "North American at any time .

7. ING

7 .1 The Builder shall perform . all cleaning operations indicated .

7 .2 Protect all sealing surfaces during blast, and chemical cleaning .

7.3 All. cleaning and rinse solutions shall be sprayed ., circulated, or

applied in a manner that all surfaces of the system to be cleaned

shall be completely wetted with the solutions . Rinse water shall

not be re uc cc l .

lt5,00O GALLON LIQUID HtD OG N Vm ,;-[ C -. 9

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Specification No. 1530-1

7 . 4

7 .5

Once water solutions have been introduced into the system, the

surfaces to be cleaned shall not be allowed to becom dr-y betweenthe steps of t%r procedure until the drying step has star„e• .1 ~

All sections of the system to be cleaned that can trop or retainany liquid shall be dra-1_ ed or emptied between the applicat i on ofeach different solution or chemical mixture . During or after thefinal rinse and prior to the drying step, each flange c .,nnect.i.onshall be loosened or opened to assure the removal of all contaid--nation from between flange faces .

7 .6 The Builder shall . seal . all systems following cleanliness inspections

and sn,=oiI_ provide: closures for all openings as specified o:i Drawing

No . 15-30 -Ml .

7 .7 CLHsi1NG SgQL EP N 0E

7 .7 .1 Inner Vessel, inner surface r

a) Blast clean

b) Degrease

c) Flush, if degreased with alkaline cleaner

d) Etche) Flushf) Passivate

g) Flush

h) Dryi) Inspect, using white cloth examination

j) Seal

7 .7.2 Inner Vessel, outer surface :

a) Blast cleanb) Degreasec) Flushd) Visual inspection

7.7 .3 Outer shell, inner surfacer

a) Blast cleanb) Degreasec) Flushd) Visual inspectione) Seal

) 5,000 GALLON LIQI Ii) HIDROSL'N VESSEL C-l0

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HDMSt00008162

Specification No . 11530-1

7 .8 BLAST CL ;AJ' ING

7 .8 .1 Carbon-free and ironfree sand (#Lh0 mesh) or alundum grit (#60 to#320 mesh), neither of wriic•ti has been used before on other metal,shall be used in all blast cleaning operations ,

7,8,2 Blast metal surfaces to re-nove all mill scale, weld flux, foreignmetals or other foreign matter. Remove all dust grit from the metal ,

7,9 CHEMICAL CLEANING MATERIALS

7 .9.1 Trichloroethylene solvent,. MIL-T-•7003, high purity grade ,

7 .9 .2 Mild Alkaline Cleaner : Detergent type cleaner such as Turco No . )090,as manufactured by Turco Products, Inc ., 6135 South Central Avenue,Lcs Angele ., California ,

7 .10 CHEMICAL CL ANNING ?RCCEGS S

7 .10 .1 Degrease ; Flush with a mild alkaline cleaner solution at a minimumtemperature of 11100F or trichloroethylene solvent until all traces

of oil and grease are removed .

7.10 .2 Flush : Rinse with distilled or deionized water until effluent

water pH and influent water pH are equivalent .

7.10.3 Etche Etch for a period of 5 to 30 minutes with a mixture of 3%

technical grade hydrofluoric acid, 10% technical grade nitric acid(by weight) and the remainder deionized or distilled water .

7.10 .4 Passivate ; Flush with a solution of 35% to L5% technical gradenitric acid (by weight) and the remainder deionized or distilled

water for a minimum of 30 minutes but no longer than 45 minutes .

7.10.5 Dry: Purge with dry nitrogen until a dew point of minus 50OF is

reached or until moisture content of disdiarged nitrogen is 30 ppm

by volume . Test dew point with a Consolidated Electrodynamic

Corporation Moisture Monitor, Type 26-301 .

7 .1.0 .6 Inspect- Inspect by visual examination, and wipe the cleanedsurface with a clean rite, lint-free cloth . After wiping, noevidence of oil, stain, rust, scale, solid particles, or any foreignmaterial on the cloth will be accepted .

7 .1.0 .7 Seal : Seal all. openings against contamination by appropriate AN

plugs and AN 6290 0-rings, Flanges and other openings shall besealed with ASA blind flanges and caps as indicated on the drawing .

115,000 GALLON LIQUIT) HYDH)G :N VESSEL C-11

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HDMSt00008163

Specification No , iJ30-1

7 .11 Authority for dctermi_ring adequacy of cleanliness of all work rests

with North Amcric n ,

8 . FA RICATTON ANT) INPIALLATION

8 .1_ GENT' AL

8,1,1. All m?terial and personnel qualificat~i_ons, including fabrication pro-

cedures, will be w tr..essed arl al :,,; oved by personnel designated by

North American .

8,1,2 Workmanship shall be subject to the provisions of Article VI of the

Fixed Price Contrac:t ,

8,1 .3 On all ouuerations where flame cutting, arc cutting, or arc-airgouging are uses:, 1/52 inch of meterial below the scarfing marksshall be re rrc,ved ,

8 .1 .2, Tube flares shall conform with Military Standard TLS 3358U .

8 .1 .5 rrubing s!-_a .ll oe supported within six inches of all bends, and five

feet maximum. centers on straight runs .

8 .2 The Builder may fabricate the vessel in the field, in his Shop, or

both, The Builder is caJ,-ioned that work of other trades will be in

progress during the fabrication and/or installation at job site ,

8,3 The Builder shall perform all unloading operations, and the instal-

lation of the vessel in a manner to insure safe handling .

8 . 4 The guilder shall install , level and adjust the vessel at the job

site, The top and bottom head seams of the vessel shall. be plumb

within 3/8 inch . Grout shall be as specified on the drawings .

8 .24 .1 Anchor bolts shall be tightened using the "turn of nut" (1/2 turn

beyond snug tight) meth .;d as prescribed in the specification listed

in Paragraph 2,1,7 above ,

8,24 .1.1 Before final tightening (after the joint is snug tight), the other

face of each cart shall be match marked with the protruding bolt

point to afford a visual means of noting the actual nut rotations .

Final tightening shall be witnessed and subject to approval of

North Amer ican Field Representative .

8 .11 .1,2 Marks shall be made permanent by scribing a line on the matching

parts .

8 .h,2 The Builder shall furnish all bolts, nuts, shims, and mounting hard-

ware required to install the vessel ,

245,000 CALION LIQUID HIDTZOJhN VEI.,SBL C-12

I IBNA0521926 4

HDMSt00008164

Specification No. 1530-1

1 ' ' inn su at_ ~on w . . h ;c~~i t is th e 8.5 Insual__l rr,icn or topp'~_ ;ng ~ o~f_ of . done in th., field ,shall be done only on Saturday or Sunday .

TESTS

The following tests shall be performed by the Builder using laboratoryprecision type equipment, calibrated to assure accuracy . All testprocedures and results will be witnessed by and subject to the a_provalof North American .

9.1 .1 HYDROSTATIC TEST

9 .1 .1 .1. The inner vessel shall be hydrostatically tested in accordance withSection VIII of the ASP", Code . The same gaskets specified in

Paragraph 11 .2 shall be used during hydrostatic testing .

9 .1 .1 .2 Test pressure equal to 150% of the desi pressure shall be main-

tained with no decrease for 30 minutes . Pressure shall be built up

gradually to maximum test pressure with continual inspection to pre-

vent damage to the system .

9.1 .2 MASS SPECTROMETER LE_K TES T

9.1 .2 .1 Complete helium rrass spectrometer vacuum testing shall be performed .If the vessel is fabricated in the Builder's shop, the testing

shall. be performed there ,

9 .1.2 .2 A "no-leak-!' reading shall be obtained on a Consolidated Electro-

dynamics Corporation Model 120 Mass Spectrometer Helium Leak Detector

set at 10`9 atm-cc/sec sensitivity .

9 .1 .2 .2 .1 Equipment shall be operated in accordance with Manufacturer'soperating instructions .

9 .1 .2 .2 .2 Prior to testing, the Mass Spectrometer shall have been certified

for accuracy at 10'°9 atm••-cc%sec and the certification presentedto North American for approval .

9.1 .2 .3 Bui.l.der shall evacuate the annular space down to 10 microns or

less . The evacuating line to the vacuum pump shall be blanked

Off with a suitable Consolidated Vacuum Corpora ion - VCS or UST

series vacuum gate valve .

9 .1 .2 .4 The Builder shall measure the annular space vacuum during the testwith the vacuum gases specified in Paragraph 5 . Testing shall be

su.sp-ended if the vacu-ma exceeds 30 microns, and shall not be resume d.until the annular space has again been evacuated down to 10 microns .

415,-000 GALLON LIQUU1) HYDILDGEN VESS't,I, C--].3

iimm u imi i iinmim mBNA05219265

I IHDMSt00008165

Specification No . 1530.1

9.1,2,5 The vacs=um line leading to the Mass Spectrometer shall be 5/8" 0. D .copper tubing stub lading fror.i a suitable vacuum valve c .osc•.-coupledto the outer ves_;E:1 . All cotoiecti.ons and this 1. ne shall bey bracedup to the leak detection equ:ii,oc

9 .1 .2 .6 After the aan+_' ar space has been evacuated to 1 .0 mi c7 uns and thevac:uuo pump isol atec3~ both the inner and outer ves_ el, ccoipl et•ewith all lines fl_au c.: ; s and fittings to the point where theseextend thrc- L h the outer ves_.el_, and a11 weld seams shall. bespraye ::i witth a fine jet of helium, and tested for leans with theMass Spectrometer .

9 .1 .2 .7 All leaks shall be repaired by the Builders and the test repeated,,at no additional cost to North Amex°ican .

9 .1 .3 VACUUM RETENTION IV.S T

9 .1 .3 .1 Following the Mass Spectrometer Tests and after vessel. in,talla.tionsthe annular space shall be evacuated to less than 10 microns an dthe pwrip shut off . After 24 hours under these conditi ons, the totalpressure increase in the annular space shall be recorded . Theaverage pressure increase shall. not exceed 1 micron of mercuryper hour . This test shall be conducted while the vessel is atambient pressi,,-e .

9 .1 .4 After installation . the vessel shall. be tested by the Builder todemonstrate adequacy of the suspensions piping and vacuum systemsby the following method-

9 .1 .4 .1 With the annular space evacuated to 1 .0 microns or less, the vesselshall be filled to the 90% full mark with liquid nitrogen andallowed to reach thermal cuilibriutmm . The vessel. shall. then besubject to 100 psig pressurization with gaseous nitrogen for aperiod not less than four hours . The annular space pressure stall.not have increased more than 1 micron in this period of time . Thevacuum pump shall be isolated from the system during this test .

9 .1 .4 .2 Liquid and gaseous nitrogen will be furnished by North American .The piping connections to the nearest avail-) GN2 supply shallbe pr•Ovid+::d by the Builder . Temporary truck Lill corgi, octions forLN2 testing shall be supplied .by the Builder . GN2 supply is

available within 20 feet .

9 .1 .5 HEAT LEAK M T

9 .1 .5 .1 The Builder shall conduct heat leak tests to demonstrate thecapability of the vessel to store LH2 in accordance with Paragraph4 .1 .1 .

45,000 GALLON LIQUID HYDROGEN VESSFL C-14.

I IBNA0521926 6

HDMSt00008166

Sbecification No . 1530-1

9.1,5 .2 Liquid nitrogen will be used as the cryogenic test medium .

9.1. 5 .3 After completion of the tests described i n Paragraphs ',1 .3 .1 and9 .1 .L.1, the Builder shall evacuate the annular space to 10 microns

or less . The builder shall attach an integrating gas flo-vncter to

the vent stack . The vent stack will be provided by others . TheBuilder shall provide all instrun-entation equipmen'~ and cert_f :'Iedcalibration data to determine the liquid nitrogen loss rate for a

2~1 hour period .

9 .1 .5 .}.I Builder shall furnish comelete heat transfer calculations and data

so that the loss rate obtained with LN2 can he extrapolated and the

expected LH2 loss rate obtained .

9.1 .5 .5 An LH2 loss rate in excess of that specified in Paragraph h .1 .1 i snot acceptable and shall be cause for rejection, based on extrapolation .

9.1 .6 Builder shall open and close all vacuum valves during the testspecified in Paragra h 9 .1 .3 .1 to demonstrate that they operate

smoothly and easily. Proper operation of remotely operated valves

shall be demonstrated .

9.1.7 The Builder may not be able to conduct the heat leak test with LH2 fo r

a period of up to 90 days after completion of the vessel iust .a_llatinn . NorthAmerican will notify the Builder 72 hours prior to the time th evacuum retention and heat leak tests are to be conducted .

10, INSPECTION

10 .1 All inner shell, boss and nozzle attachment butt weld seams shallbe 100% radiographically inspected . The radiographing shall beperformed in accordance with the apnlicablo paragraphs of the AS€

Code, Section VIII . Cost of radiographic inspection shall be borne

by the Builder .

10.2 Exposed film density shall be 2 .0 to 2 .5 H and D .

10.2 .1 The interpretation of radiograph c negatives shall be the responsi-

bility of North American .

10 .3 Dye penetrant inspection shall be performed on all stainless steel

and/or aluminum welds not radiographically inspected .

10 .11 The Builder shall notify North American in writing 72 hours inadvance of cleanliness inspections .

10 .5 Inspection procedures and fabrication shall be witnessed by NorthAmerican and approved as required by authorized State or Municipal

Inspectors, ASIA and Insurance Inspectors, and shall be subject to

the approval of Ncrth American for final acceptance .

C-1545,000 GALLON LIQUID WTDROGEN VESSJ L

ME RIBNA0521926 7

HDMSt00008167

Specification No . 1.530=-1

10 .6 Final accepta.,-i(-e of clear_lines~: by North American shall be at job site ,

10 .7 Inspe:ctiorr by visual exaninal :,o,.i arid, if required, wipe clefne'surface with a clean white cloth, After wiping, evidence of oil.,rust., stain, scale, solid particles of foreign material on tt•cloth shall be cause for rejection .

11, PAINTING

11 .1 The outside surface of the outer, vessel, i_ncludtn€ supports andacces:r,r-ies, shall, be cleaned of rust, scale, slag , weld spatter, ;:oil or grease, pencil markings, and any other material which mightstrike through the paint or interfere with bonding of the paint tothe metal . Cleaning shall be by wire brushing or sandblasting .

11 .1 .1 Stainless steel and aluminwo surfaces shall not be painted .

11 .2 All exterior surfaces of the vessel and associated equipment shall b,painted as follows

11 .2 .1. First coat : identical to National Lead Company Formula 57 -1-50Basic Lead Silico Chromate Metal Primer .

11 .2 .2 Intermediate coat, identical to National Lead Company Formula54-L°55 BLSC paint .

11 .2 .3 Finish coat : identical to National Lead Company Formula 58-K<53without BLSC .

11 .2 .4 Color. No . 17875 per Federal Standard No . 595 .

11 .2 .5 Other acceptable brands are standard products of SherVTin-Williams,Pittsburg Paint and Varnish, Dupont, or Sinclair .

11 .3 Paints shall be delivered to the job site in original sealed containerswith labels intact . Directions for mi)dng, applying and storing, asprinted on these labels shall be followed .

i1 .1 Each coat shall be applied to a 1-1/2 to 2 mil thickness .

11 .5 The vessel shall be stenciled "109V" in 3 1 °0" high numbers and"Liquid Hydrogen" in 21°'6'1 high gothic upper case letters . Stencilingshall be. done with black paint after the finish coat of paint, and shallbe located on the horizontal center line of the vessel on a side t obe designated by North American .

11 .6 The Builder shall, protect all equipment and material_ adjacent to thework area, by suitable cL op cloths or other means .

45,000 GALLON LIQUID HYDROGEN D),,0 R C-16

uuiuuu i ii iBNA0521926 8

HDMSt00008168

Specification 1Gc, 1530- 1

r°t: eve11x7 At the. conclusion o" the work : the Builder shall clean an dall paint spots or stains, remove aa1 waste ma? ;er ialss excess po .Hung

material and dirt or detris from the are?., and leave the pre, .e .; ina clean and neat conuit? or,

1159000 GALLON LIQUID t URO~ i DE 4AR C-17

BNA0521926 9HDMSt00008169