Document 59MMDVyEQR7exkVVzDe5OrpV
WXLTTAHY SPSCIFICA90N insulation pips covsaaa, mmir
This specification has been approved by the Dnpartmont of Defense sad is mandatory far use by the Departments of the Amy, the NM^ahd the Air
Fores.
1. SCOPS
2.1 Scops.-! This sraiflaatu* cower* mfwnrt --in'll inittlatk* for lifis m aolEsSSSiig covering on pita*.
L2 Blassi/tgation. > Thermal lacaiatiOB Pipe ca-- Shall he of the following grades, classes and types, as specified IBS*
.
Q?r*de l - Temperatures u* te Wf f. Class b - Cotapaaded.
Grade U - Temperatures cm & 7&Cf F* Class c * Fibrous, C\2s d - Compounded.
Grade IS - Ternp^ratiree |d l,Qf ?f
Class e -r Compounded*
Type l - Light densito.
a$p$ S - Heavy dnii^e Class i - Fibrous,
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VW-05105
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2. APPLICABLE DOCUMENTS
2.2 toUamiagapeciflcato*and date ttf invitation tor bldg, Cora a part of
SPECIFICATIONS
i* of tee Issue Is effect os specifications
federal
PPP-B-585 Boxes>
tffirebouad.
PPP-B-691-Bcpes,
rtoard, Wood-Ciaated.
PPP-B-i -
Wood, Ckated PlfecA,
PPP-&-62I -
Wood, Nailed asd Lock,
PPP-B-6S6 -
s, fcjbgr* . a>jI
tl
ppp-X-70 -
, Premtre-Seositti* Adhesive,
r, WaStPeiiWart, < i
MILITARY MXL-B-:
- Bens,
Overlaid* - Liners, Case.
% P**r
Inspection!* inii*. Sampling for ;
12fi * Marking tor
and TaUeKtor i, sad
Testing by Attrtoces. ttd'Sfevaa*.
(Copks of apecifl by contractors is e< obtained from toe proa
it stendartef, dradayg, and pitoWations n&uiml with specific proaureoai* tumtelahs should b* agency gr as directed by the ytofcracttoj officer.)
sgtetfuaur*. uausa ocaem tin* tor bids aUaU apply:
tfiUa^lrij dacununteaofcn a pari erf tote Ite tewe M afteei cr date of tovUr^
oroctAif Freight ClasatitoaUan Rules.
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(Application tor copies should be addressed to the Ott^klCladSifibaitou Coma ittee, i.fttfkttvenoe fti 33tdfc.., Heir Yotei 1ft,^ f.)
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uiL-i-r/aic 2. APPLICABLE DOCUMENTS
2.1 The following specifications and standards, of the lame In effect cm date of Invitation for bids, form a put of this specification:
' SPECIFICATIONS
FEDERAL
PPP-B-&3E - Boxes, Wood, tHrebouacL
PPP-B-631 - Boxes, Flberboard, Wood-Ctoatod.
PPP-B-601. Boxes, Wood, Cteated-Pttwad.
PPP-B-621 - Boxes, Wood, Mailed aid Loct-Camer.
ppp-B-636 - Boxes, Fiber, . jH. (...
il.
PPP-T-78 - Tape', Pressure-Sensitive Adhesive,
. -Rip ea r, Wtate^ r1 B\A osisttfcL ' .
MXUTAR? MD>B*10377 - Boxes, Wood~Cleted Vggr, Paper Overlaid* MXL-L-IG&47 * Liners, Case, Waterproof
STANDARDS
MILITARY
yiL~STth'lQb - Sampling Procedures and Tables tor ZaspectioQ bjr Attributes****'
bfLL-dTD*l& - tarfciay ter Shipment and dtoeags^
(Cop!** of apogtficaUoiai/'gteodardsrdrawii^fi, and publication* r<*ouir<s<i
iI
by ewdracters in ccmnsetioo lte specific proeoremeot functions should by obtained from tee procure jobey or as directed by tee contracting officer,)
2. a Other pubUeatloos, The fnUo*toj document* form a part of this
spgelfiea^Nir Bouse AzrSkt* tallrniiad, tee (mu* la dMai date of invite
tten tar bids sbali apply;
tioilorm Freight Classification fiutea*.
(Application tor copies should be addressed te tee Qtfolal filtessUflatten Corns tttee, L Partvenae fit 33tdC, Ko* York tfcJfL Y.)
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NOTE; Tbis draft, dated 2S September
prepared by the Bureau of
Ships, bag p&i been approvedUyt is subject ta madififlatlwu DO NOT USE FOB
PROCUREMENT PURPOSES.
A* \
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Grade I - Te CUss b ^CQ
Grade U - Tempe Class/ - FUsr Cl?4C
Grade Hr - *Temp? Class e - Co
Type l- Light das? Type H - Heavy Class i - Fibrous,
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IttUI-E/dlC
AMERICA* SOCIFS* FOR TESTING MATERIALS ' Standard? C-902 - Density at Preformed Pipe-CoveringTfpe Thermal Insulation, Method of Test for. . ^
M^ .
lAppUcaUoofor copies should be addressed to the American Society for Testing Materials, 1916 Base Street, Philadelphia 3, Peoxu)
3. RETIREMENTS
3.1 Qualification.- The thermal insolation pipe covering furnished under this apecincatioc sbaiffcft & product which has been tested and has passed the ouaiiflcaUofc tests specified heretot(eSBQ
3.2 Material.- The pipe covering shall be composed of heat-resisting anibnn&'froT the temperature conditions and the purpose Intended.
3.3 Composition. - The composition of the piae coverto*. shall co;ucr<.-. to that of tiesample^lven qualification approval free d. 2).
2.4 Fong sad dimensions.-
V*s>trm//y
3.4.1 Form and length.- Pipe covering for nominal pips sk*es up to and
ip^iyting 10 inches shall be furnished in sections ? :est loa^, npUt to Isle
lengthwise. Pipe covering for nominal pipe stess kr. *r tl.*L 1C
...
* be furnished in semi-cylindrical sectiooaor as curved se^irents, a to
length. Each section or segment shall betfrue to shape and rouadosss>
X, tolerance of plus or minus 1/h inch ialsngth -ill he oar fitted,
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-ifaswS*ji er'^aTes.l
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Fhysloa l Taqulrsaa n ts i- Pips eovaritig s h a ll conform to tho
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S.g.1 Resistance to vibration.- Tbe pipe covering shall be la satisfactory condition s^on'cinjpleli^cftfieteS?specifiedla4,3.10>'
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8. 6 2 Simulative service test grade UL only.- Grade HI pipe covering shall be in satisfactory condition upon completion oftEe/lest specified i& 4.3,11. *
3.7 Workmanship, - The workmanship shjrfl be first class la every respect
5 4, ftUAtnr ASSURANCE PROVISION 4.1 Sampkng. -
Ir i. 1 Lot-^\For purposes of sampling, a lot shall consist of all hall sec-,
tlo&s or segments qf pipe covering of &s same grade, class', pipe size a&d thickness produced b one plant unde/ essentially the same coadittoqs and offered for delivery at. one time.
4.1.2 Sampling for Visual, dimensional and density egammalifts at the place of manufacture.- lAx^nm sample of half sertfoasor segments shall be Selectfidirom eachTot offer^ifior Government examination in accordance with the appendix to Standard MIL-dsTp-lOb at inspection level L-7, Tfc? acceptable . quality level shall be equal to/2.\peree&t defective.
4.1.3 Sampling for lottecceptadq? inspection at the place (rfmanufactors.
A random sample of half sections or segments shall be Selectsg irctz each
.'inspector lot in accordance with the* appendix to Standard MShfSTD^l^f at" : inspection level L4 for ibe tests specifiers' 4.2,2.
4.2 lasoection and tests. -
4*2.1 Visual and dimensional and density ex^inatloif. - Each of the sau-
pie half sections or segments"selected in accordaaciyit*i. L 2 shall bs tteittltt'
aai dimensionally *;jamiaed and the density determined1.3.3} uj the C-o-eru
meat inspector to verify compliance with this specification. Any half seczivu or
segment in the sample containing one or more visuay'dimensional* to* density
defects shall be rejected, and if tee number of detective half Sections or seg
ments In any sampk exceeds the acceptance rnuabpr for that sample, the lot
represented by the sample shall be rejected. Refected lots may be offered again
for Government inspection provided the contractor has repaired or removed all
nonconforming half sections of a. jjer-U. The'Government inspector steU a.ain
walect a&d examine samples from such resubmitted lots to verify compliance
lth this specification.
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3. 1 Resistance to vibration, - H pipe covering shall he in satisfactory condition upon compleilaa ot ihfiTSFspecified is CTrtfc-f
3. jfs Sigalaagcservfcg-mMe^eMew^meifc.
--gioc covering shall
he i* satisfactory conmUOT upon conapisuon <tf the test specified in qpftrlUi ^ -r *10
S.J Workmanship. - the workmanship shall be first class in every respect.
ftcALmr assurajjce j^ovisk^s
a "?...... -- ............ - ---------------------------------------
j .4.1 tfetess otherwise $e&erf bereia & suUm is rwSfO&Abie for Che pertAnsaaeo of oS iaepee-
* Jtfcft
War to sobtslssiso 'tat Govtr&aottt
aitAKeepCMce. Sscefr as otherwise
. JftpefUM, the svppiier **T otnise ftis oem fiteUfcies or *a* ceerci*i Jjtocf*407T ecgepto&ie to the
Qvmsmt. tofcpeettm records af the e***ifl*fiac* sod teste sfaaii be tepc oospUte moo ftvtU&tte to the
;Coverfcseel u speoiied i& the ecaencl or order.
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4.^ ^ualtfifntftm tests
stall be conducted at a
laboratory a
Slips. These tests shall consist <* the appfkwe
43 Sampling.-
- Qaaitffratfrm tests TV the Bereaa of
specified in 4*fc 4.0 -* *
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43.1 Lot.- Fbr purposes of sampling, a lot shall consist of ali half aee-v
tioos or segments of pipe covering of the same grade, class, pipe size and thickness produced in one plant under essentially the same conditions and offered for delivery at one time.
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43.2 Sampling for visual, dimensional.&& density ecaminatioaghiliOh HL^SMB^^iaodon sample o/ tttlf sectiaos or segments $t3B be
tiered for AmmmM esamiaalloa in accordance with
l^appmdiv** Standard MII^SSD-XOS si inspection level L~3. The acceptable
quality level shall t squall* 2.5 percept defective.
43.3 Sampling for lot acceptance d&*&&**ik*
4
rrffeaJf
or segments shall be selected iroax each
'Inspection lot Is accordance *iih to. a^r^aiiH bi Standard MIL^STD-10f ht" * inspection level L-4 for the tests specified in 4.rfe 2.
4 Inspection
s. fr
4, l Visualand dlmensiopai and density e-sanugatloa. - &ch.of the
ble half sections or segmenfsLsjK:tedLin accordaiic"T.iiS_;Tll 2 shall hi vUikillr
aad dimensionally ir^axnined and the density determined fes* =.f. )
_ to verify compliance vith this specification^ Aoy half section or
segment In ih$ sample containing one or more visual, dimensional, or density
defects shall be reacted, and if toe number of defective half sections or seg
ments hi any sample exceeds the acceptance number for that sample, the lot
represented by the sample shall be rejected. Rejected lob may ho ottered again fat Ooumiimat inspection provided me contractor tea repaired or removed all
aencoaformin, tali sections of*, -^ents. The-a*s*auafid ias^ctor shall a.aln
elect and examine samples from such resubmitted lots to verify compliance
With this specification,
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1. ptoae fefiaed.
_ m li T Hj puilf ilnuj -
Grade, class tad type visas
a* as specified.
Material eot a* speotflifi^ start ay fpwhjm
CH in u^-
V Form as* is required; sc* fumts&ed la segments of ssetioas as specified
\ to properly- feacwse pipe <* a* required diameter. 104) Le&g&setas required, cot eltWa specified tolerance. 105* Thickness aot viUtfa reqvdred toisranfl*. 106' Sections craoked, arofcea or damaged,
maarzadka; 'nmipHnr*." >s ilfl miavl
zoi; pSeilng set u required. ,
Two specimens
io If. 7. If any one of the sample specimens tested is found to be aot in con formance with this specification, the lot which it represents shall be rejected.
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~(<5*t.' *D*eoslty:
Desstty flTeofldc specified mariTWim *i.ae.
.gartfarss:
P*tr*tia& exceeds required maiimuffi r ^S&dulus Pi rupture:
tasted as pveeCL
UcAUas td retire teas than fee specified minimum eifee when tested aa required.
; Cwsoxjsitlott Ul Gewraaeat laboratory)
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Gaftposfiioo aot *& required vben analyzed as specified.
-- SUbiUtr tAtGovarfiiaeailitemory?,
loa^Uity of staple to vitfcetaad vferafian test specified,
r Thermal ooDOBethttp tAt Qoeemaeat laboratory)
Thermal cooductSviiy sagseds required
tested as
7 AVA*brasion test: (At Government iafaoretary)
LOS3 Ifiweicat eeed* speet&ed: asxteum b*a subjected to tte specified test naaHMoas.
**>%patiag loss sad shrinkage: (At epvensaxfixd laboratory)
iAWttrtatacg.toaafewgiaa.c&w^
values vbea tested as required.
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4* jt9 7JX Action to case of failure. * A rejected lot may be resubmitted tor
Inspection only after tee manufacturer, after being informed of tea
reasons for rejection, has so reworked the entire lot as to remove or correct hU nonconforming material.
\ 4+ji 23 Place of tests,- Lot acceptance tests shall be conducted atthe
place of manufacture if facilities are available. Otherwise, they shall be con
ducted at tbe+mmrnmBm laboratory designated in 4.JL 3.
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i/. 3 Comparison inspection.- From each contract or order, or when
deemed necessary by the Government Inspector, but not more than once a year
for any one manufacturer, samples of tee same grade, class and type of half sections or segments shall be forwarded to tee U.S. Naval Engineering
Experiment Station, Annapolis, A&L, unless otherwise specified in the contract
or order. These samples shall be subjected to asy test considered necessary
by tee laboratory to determine that the samples are equal to the samples upon
wkteh qualities*tofc was baaed. ft an \aafitisfactory report to obtained* &e
laboratory shall Immediately notify the Bureau of Ships asd the Government
inspector.
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4, Test procedares.-
4*Cl Conditioning samples.- Tfest specimenstea^odaMte sh&ll
be dried to constant weight ip berating to 220* to 3Cf F. (105* to liCPC.).
. 4. J. 2 Composition. - The composition $ban be determined by chemical
analysis, using accepted laboratory methods.
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4.]k3 Density,-^pine cheering shall be .................. .
.-j
aai tiwedi--determined is accordance witbihe method specified in ASTbi Standard C-302.
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^ 4.^.4 Thermal conductivity. - Tm Ihif liil, Itei iwuiptiTWull li M n inni
\>>r,tlrrna1 ......i P '-`h ffrti
ttimmimni m a jiiprr
fee *..( i*
4*srf* ftt*
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4*5 Hardness.- Hardness shall be determined a the plastometer, a
eommercifiTinstrumeSt consisting mainly ctf two pwllei metal disks aborted
oq uprights, to which are fastened a thin red with a l/&-iaeb dlumrter ball point,
measuring gage graduated in l/LOO millimeter (nm.) divisions, and a kilogram
neighs A specimen of the material to be tested shall he placed under the tnstru-
meat, and the 1/13-iach ballpoint shall be brought down on the surface of tfe*
specimen corresponding to the outside aa received, until the index hand on the
measuring gage makes tvo complete revolutions. The kilogram weight shall
t. *
ten be slowly released from Us supporting disk and allowed to rest on a shoulder d the tell po&t holder, causing the ball point to sink into the specimen. The
idepth that the ball point Is depressed into the specimen shall teen be read on the
graduated measured gage dial to 1AOO dipt mm*
i 4. J.6 Abrasion test.- The structural strength shall ^determined by the abrasion test* to this test, twelve l-iach cube specimens at the material and twenty-four 3/4-inch oak cubes (specific gravity of the wood 0.65} shall be placed In an oak box having Inside dimensions of 7-1/2 by 7-3/4 by 7-3/4 inches* The opeoing of the box shall then be closed and the box rotated about Us own axis at a speed of 60 revolutions, per mUute lor two 10-minute periods. At the end of each 10-minute period, the cutes of the material under test shall be removed from the box and the percentage of loss in weight, due to pulverisa tion and breakage, shall be determined. The box shall be cleaned to remove all pulverised and broken particles prior to each test*
4*|.7 Modulus of rupture*- The tastier determining the modulus of rup
ture of the materials shall consist of supporting specimens of the materials on
10-Inch centers and suspending a load from a saddle centrally located on the
specimens with an increase of load until the specimens are broken. The speci
mens shall be IZ inches in length and'in quadrants ttom the inner and outer
layers of pipe covering. The saddles and canters shall be constructed to con
form to the curvature at the specimens* Ten specimens of each layer shall be
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MIUI-2781C
4, 2,2 lot accepbrngAtesb at the place of tnanirtMTMre.- Two specimens
from each of the
secih^'or segments selected"E accordance with
4,1*3 shall be subjected to the test specified Is 4, deb sad far those pipe cover ings which in table Hpave a modulus of rupture requirement, the test specified
In 4.2.7. If any oWof the sample specimens tested Is found to be not in con
formance with thls/pecificatloa, the lc* which Jt represents shall be rejected.
4.2,2,1
Government reasons for all nonconfo
foa In case of failure, -
:Uoa only after the fection, has so reworked
material.
ijected lot may be resubmitted for er after being informed of the e lot aa to remove or correct
4,2,2.,
:e of tests.- Lot'acwr--------- ^shail be conducted at the
place of
7SclSSes areAvailable.
they shall be con-
ducted
Government laboratorydesigaated in 4.
4JLS Comparison iaspec _-_ From each
r order, or when
deemed necessary"fcy ta^ (Sov ent inspector, but not mtoe than once a year
for any one manufactur sessions or segments sha&be
s of the same grade, claskaafl type of half &d to the U.S, Naval fieeri&g
Experiment Station, Ac
lid., unless otherwise spectfMj^tee contract
ot order. These samples stfll be subjected to say test coasidered"Sbc^s$ary
by the laboratory to dete
it the samples are equal to the sampleg
which qualification was ba^d. an unsatisfactory report is obtained, the
laboratory shall immediately no the Bureau of Ships and the Governjneai
inspector.
4.3 Test procedma
4,3.1 CondUiooi samples, - Tfesv be dried to constant ight hgr beating to '
ictoess for inspection and tests shgjl to230"f. (io^ toilerc.).
4.3.2 Composite. - The composition shall be tetarmiont fcy chemical analysis, using accepted laboratory methods. ^
4.3.3 Pepstty,- Pipe covering shall be eare&tty measured and weighed and the density shall be determined in accordance wiA^the method specified in ASTM Standard^C-302.
4.3.4* *.~>rmat conductive - For this test, the sample shall he a 3-foot sectional cover for a 3-imfa plpeT" Conductivity shall be determined on a pipe* test apparatus at several temperatures op to bOCf, 750* and l,05Cf F. , respec* tiveXy.
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IGL-I-2781C
used for the test. The modulus of rupture shall be the average of the results oa all specimens. The following equation ahail be used in computing the modulus of rupture:
R-0.6JB3 - r3) I
0.25WD
{R2 - t%) J
S 0.8214 CR4 - r4) - 0.2828 0*3.^2
5 Modulus of rupture (pounds per square inch). W Breaking load (pounds). D * Distances between centers of supports (inches). 6 ^ Badlus of outer periphery of pipe-covering specimens
(inches). r Radius of inner periphery of pipe-covering speci
mens (inches).
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4.2.8 TTi jjjjj Tifiii iTir tnbntfr Carnally siaed specimens shall be placed in an eWctxicaUyVated ovep. specimens shall be heated at 60Cf, 750 f and 1,05<? F., respectively, for grades I, E, and IE for 6 hours. After removal from the oven, the specimens shall be examined to determine toss in weight, linear shrinkage, and change in harness.
a total
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4. i. 4ft- Resistance to vibration. - The ability of the pipe covering
to withstand vibration shall be deterizB&ed from sections of the covering which
have been subjected to the trmrtmQm pipe temperature for the respective grade for a period of 100 hours. The sections then shall be applied and secured between two circular 9-1/2 inch diameter metal disks located 36 inctes apart
on a section of nominal 3-Inch pipe. The pipe, with toejMMtoi applied, shall be connected in a horizontal position in a vibration marine. la this position,
the materials shall be subjected to 720 vibrations pe^minote through an arc of 15 minutes with a radius of 30 inches, for a periods at learn; 96 boors.
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UH-I-2781C
4,3.11 Simulative aervicb test, b
only.- Pipe cowwrfag ahall be
applied to a sectiooof nominal 3-iacfc pJpe.
pipe shall be aetatatoed at a
temperature of l.O&TF. for 30 days. Then the pfce covering shall be amfeed.
B the pipe covering la is saHsfartary couliti^Nk shall be applied tad secured
between two circular 9-1/2-inch diameter metal tote located 38 inches apart
bn a section of adl&iqal 3-toeh pip*. The pipe witfltoeghw cdecrtogStolled, Jtadl
be connected la a vibrates maculae. In tbis positic^Jwe pipe covering shall
be subjected to 820 ttfarainns per toteoto ittfoogh* aa*}apr of 15 mtouteg, tor
a period of at least 96 bol
44 QaaXifteatton teats ala Government shall be conducted at aRvenaheotlaboraEry Ships, These tests shall eonsisCgf the applicafafe teats specl
4.3.
6, HIEPARATION FOR D!
5.1 Packing.-
1.1 Level A.- Pipe covering sba&Hje parsed is
as bpe wood
cieatet^Jiberbo&rd, "Hailed wood, wireb^und vrood, co
or solid fiber-
board, wood cleated paper overlaid, at wood bleated
boxes conform-
togtfcSg^ifefcfiiMPPP-B-501, FPF-B-621,
5, PPF-B-636 class 3,
M11>B-10TO or PPP-&-601, reswfetlvefr, *
of the contractor,
Shipping congeners shall have rayliners conform to Specifica-
lion UH^-Uld&47 and shall he closed sod sealed
ordasce with iheaabtadix
thereto. Caseliowsior boa&s/wformtog to
PPP-&-636 may be
omitted providedmU joists antf'eoraers of the
with tape cow*
forming to Specif!
PP&T-76, Box etosufes shall as specified to the
applicable box spec!
ajpeadix thereto. The
weight of wood
boxes shall not
200A*>uads; Cbe:
boxes shall emceed toe weight
limitations of the appl le box speclfl
6.^2 Level B.-
ctoated fiberboard, board, wood cleated
covering, siufll be packed to domestto&pe wood wirebound wood, corrugated or wild fiber*
or wood dfeaied paper overlaid boxes cbpforwtog
to Specifications PPp-B-59lXPPP^621, PPP-B-585, PPP-B-636,Wa 2,
PPP*B-501, or hfiL-B-10377^respectively, at toe option of toe contractor.
Box closures shall be as specified to applicable box specification or appendix
thereto. Ilbe gross weight of wodd boxss shall not exceed 300 pfraato; fiber*
board boxes shall not exceed the wwtaht limitation and shall conform to the
special requirements of toe applicable box specification.
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4. llrfTSimulative servicfe test^w>^*B^^r> Pip cowering shall he a
applied to & section of GonUois-iochplpe. ra pipe shall be maintained at*.
for 30 days. Then the pipe covering atoll be examined,
gtfe pipe covering to in aatisfectoy ccrtftinn, It shall to afetted and sheared
faatwcup too circular 9-l/2-toh diameter metal disks located 36 inches apart
oe ft aectk* of nominal 3-toch pipe. !to pipe with ttoj^cdeerlog'dppi^^
Ibe coracted to a vibration machine. In this position, the pipe corn-lag shall
be subjected to taofcibrtlions per minute tteoagh' an aro lb minutesrter
aperiM of alleast W hours.____ ____ ________________
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8. PREPARATION FOR EVEU7ERY 8.1 Packing, /*
A'
6.1.1 Level A.- Pipe cohering shall be packed in overseas type wood cleeted flberteard, called wood, wirebotwd wood, ww^MMN liber* tooto, wood cleated paper overlaid, or wood cleated plywood boxes eooXormtogSfi?SpfedSltottbBSPI^B-B&l. PPP-B-621, PPP-B-6^. PPP-B-6^ class a;
MfL*B-10377 or PPP-B-fiOl, respectively, at the option ot the contractor. Shipping containeigsbaii have ca&etiaers conforming to Specifica tion MXi-L-lOMT^fiaSrShali be closed and sealed la accordance with theapptodix
toralng to speeificauos PPP-T-76. Boa closun^ahall
applicable box specification or appendix thereto, Tbe
boxes shall not exceed 200 pounds; fiberboard boxes
limitations erf tbe applicable box specification.
a.**/ *r
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Wif
of wood tbe weight
6,1,2 Level B, - Pipe covering- shall be packed in domestic type wood
cteaied flberSoarSToailed wood, wirebooad wood,
wood cleated plywocxLae wood elected paper overlaid
conforming
to Speetfhtottcws FPP*B-Wi, PPP^B-^l, PPP-8-.&65; PITOrfcK* etoto-Z
PPP-B-601, as
10377, (respectively, at the option oftfc contractor,
Boa closures shall be as speciftod to applicable her
or
thereto. Tbe gross wfetgbt of woSSfoxas shall not exceed aoo pounds; Phr-
board boxes shall not exceed the weight ITrn'tntim mmI tiinll naifiniu in t.te epaeihl raguiramfrots erf tbe applicable box specification.
c--
i
5.1,3 Level C. - Pipe covering shall be packed in containers of the type, else and kind commonly used for the purpose in a manner which will Insure acceptance and safe delivery at destination* Shipping coitfalnets shall comply
tth the Uniform Freight Classification Rules or other regulations as tf$U* gfebl* to the mode at transportation.
5,2 Marking.* In addition to any special nariring regalrnrt by the contract,,
order; .orfceremTSdwrtawwadweMwiipwhii^^
be marked la ,
accordance with Standard MH/-STD-120.
/
6. NOTES
W/y^c*vdr
/
6.1 Ordering data. > Procurement documents should specify the following*
(a) Title, number. and date of this specification.
(b) Grade, and K-applicable, class and type required
(see 1.2).
(c) Nominal iron pipe sine (see 3.4.2},
(d) Nominal thickness (see 3.4. S),
(e) Whether the pipe covering shall be packed in accordance
with the requirements for level A, B or C (see 5.1).
Trec.ul
r*jM..WJ
.
0,2 Qualification.- With respect to products requiringqualification, award*
will be fiiada only for such pmdrtty as have, prior ta the time set for opening of
bids, bees tested *gd apprevgd for Iscluaim to Quaifftod Products list QPL*R7tl
whether or not spch products have actually bee* #g listed by that date,
ftfli l The attention ^ suppliers is called to this requirement, art maau*
facturers are urged to arrange to have the products that they propose to offer fcb
ibe Federal Government, tested for qualification in order that they may be
eligible to be asardedAontracts pr
specification.
airNiIflritinii may hrnfrtninful frem the Chief of the Bureau of Ships, Department
of the Navy, Washington 25, 0.C^ . * \ .v -___ 1 r*
*'
^ v -< -r .
'. "tr...-"
6Z
8
uxL^mic
Hot*cg, . Medtor aaypBipose awtprocBwawt
reopocatMIty amp ttay*v
2
y-vt
.*
i
inif-uroic
Notice. * When Government drawings, specifications, or other
*re
needier any"jw*po* other than Is connection with a definitely relau-u Govern*
meat procurement operation, the United States Government thereby incurs o
responsibility nor any obligation whatsoever; and the foot the! the Government
may have formulated, furnished, or insay way supplied the said drawings,
specifications, or other data is not to be regarded by implication or otherwise
as in any aaxmer licensing the bolder or say other pigeon or corporation, or
conveying any rights or permission to manufacture, use, or sell any patented
invention that may la any way be related thereto*
Custodians:
Amy - Corps of Engineers Navy - Bureau of Ships Air Force. Other fadosart;
Army dFT
navy- y.
Preparing activity: Navy Bureau of Ships
U
t
i M1L-I-2781C
b. L 3 Level C. - Pipe covering shall be packed In containers * the type,
slse and kind commonly osed for the purpose In a manner wtyc$4bl Insure
acceptance and safe delivery at destination. Shipping containers shall comply
with toe Uniform freight Classification Rules or other reflations as appU^
cable to the mode* transportation, j
/
>/ Markisq.-^io addition to any special marjcing/requlred by the contract*
<0*4*?; :or herein, interior ami ezterldf^hipplng containers shall be marked In
accordance with Standard MLL-STD-lSfJ.
^
.
8. NOTE? --- \\
/
6.1 Ordering data. A\ procuremen docamq&s should specify the followings
(a) ?Ule, number\and date oj this ypeclficatfoi
(b) Grade, and If applicable, pl&ssy'and typ^required
(see 1.2). \
)/ X
(c) Nominal Iron plpe^iae (see 3.4*2*
(d) Nominal thickness {see
(e) Whether the pipe coveripgfbfcall be packed In accordance
with the requirements for level A, B or C (see 6.1).
.v-^uTr 6%2 Qualification. y*With resp&crto products requiring qualification, award* will be mii^oiOxj<ysuch products astiave, prior to the time set foc^pening of bids, beeaAesled and approved (or iaciahLcn in Qualified Productsj&st QPL-e7il
whether or cot such products have netball? been listed by tharaate,
6. Z l The atteoUoe of suppliers is railed to .toierpgtflrefflfint, aad manu
facturers are urged to arrange to have the products**^ they propose to offer to
toe Federal Government, tested for qpaltfieailo&JsS order that they may be
eligible to be awarded contracts or orders fjHw products covered by this
specification. Information pertaining toaeSlification * products covered by tola
specification may be obtained from
:hief of toe Bureau of Ships, gfcpyi*jua\i
of the Navy, Washington 26, D.C,
4
U
MTUI-2781C
4.3.11 Simulative aervisfe test, grade IS only. - Pipe counting shall be allied to a section of nomaai 3-incfifpipe, Tbe pipe shall bejftaintained at a temperature of 20fiCT F, for 90 days. Then the pipe covering aball be examined. S.tbe pipe covering la Itt satisfactory condition. It shall he applied and secured between two circular 9-1/2-inct diameter metal disfcs located 36 laches apart on a Section of nominal S-incb pipe, Tbe pipe with the pipe cdmiag'epplfed, Shall be connected in a vibration machine. In this position, the pipe covering shall be subjected to ISO vibrftiio&a per minute through'an are of 15 minutes, for a period of at least 96 hours.
f 4,4 Qualification teats at a Government laboratory. - Ottaltflcatimt testa (Wail be conducted at a Government laboratory rtMtignatenby the Bureau of Ships, these teats shall consist of tbe applicable tests specified in 4,3.
6. PREPARATION FOR DELIVERY
6.1 Packing,-
\i fi.Ll Level A.- Pipe eeverio&smi be packed in overseas type wood v cleated fibercoard,>sailed woodj^jrtrefeound wood, corrugated or solid fiber-
vv board, wood cleated paper ovpriaid, or wood cleated plywood boxes conform*
X ing1^hcifiisailmsPPP-&^l, PPP-B*621p PPP-B-58S, PPP-B-636 class 3, MIL-B-10377 or PPP-B^fel, respectively, al the option of the contractor, Slipping containers shall have caselinfers conforming to Specifica-
* , tion MXL-L-10547, aw- shall be closed and sealed in accordance with tbeapphadis '^lhaaele. CaaeUoera for boxes conforming to Specification PPP*&*636 may be omitted provided all joints and comers of the boxes are sealed with tape con forming to Specification PPP-T-76. Box closures shall be as specified in the applicable box specification or appendix thereto. The gross weight of wood boxes shall not exceed 200 pounds; fifajerboard boxes shall not exceed the weight Umtt&tio&s erf tbe applicable box specification.
5,1,2 Level B. - Pipe covering, shall be packed in domestic type wood cleated flberboard,'nailed wood, wirebound wood, corrugated or solid fiberboard, wood cleaied plywood or wood clested paper overlaid boxes conforming to Specifications PPP-B-691, PPP-B-621, PPP-B-685, PPP-B-836, claps 2, FPP**S-flOi, or Un^-B-10377, respectively* at tbe option of tee contractor. Box closures shall be as specified in applicable box specification or appendix thereto* The gross wfcigfct erf wood boxes shall not exceed 290 pounds; fiberboard boxes shall not exceed tee weight limitation and shall conform to tbe ipecihi requirements of the applicable box specification.
10 &6>
^7
MIL-1-2781C
used for the test. Use modulus of rupture shall be the average of the results oq &H specimens. The following equation shall be used In computing the modulus of rupture:
0.*25WD
R-0.6 (R3 - r8) (R2 - r2)
5=---------------
0.3214 (R4 - r4) - 0.2829 - r^2
(R2 i r2)
Where:
"
S Modulus of rupture (pounds peri square inch).
W Breaking load (pounds).
.
D = Distances between centers of supports (tncbes).
R Radius of outer periphery of pipe-covering specimens
(inches).
r s Radius of inner periphery of pipe-covering specie
mens (inches).
4.3.6 Heating loss and shrinkage.-- Carefully sized specimens shall be placed in arTelectrically heated oven. Specimens shall be heated at &0Cf, ?5<F, and 1,05? P., respectively, for grades X, H, and HI for 6 hours. After removal from the oven, the specimens shall be examined to determine loss in weight, linear shrinkage,and change In hardness.
*
4.3.9 Moisture absorption. - Duplicate specimens, each having a total area of 72 square inches, shall be subjected to an atmosphere of 90 percent, relative humidity at 13? F.,dry-bulb temperature, for Giaours. 'The Increase in weight shall be noted and recorded as percentage increase in weight and vol*
ome.
4.3. XO Resistance to vibration. > The ability of the pipe covering materials to withstand vibration shall he determined from Sections of the covering which have been subjected to the maximum pipe temperature for the respective grade for a period of 100 hours. The sections then shall be applied and secured between two circular 9-1/2 inch diameter metal disks located 36 inches apart on a section of nominal 3-inch pipe. The pipe, with the material applied, shall be connected in a horizontal position in a vibration machine. In this position,
Use materials shall be subjected to 720 vibrations per minute through an arc of 15 minutes with a radius of SO inches, for a period of at least 96 hours.
] j
;
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9
Ser 3*22-360
Tbe Philip Carey Muufaetariag rniuaar Flysoute tatting \mxA
Plyaeuth taettag, FeoDaylvanl*
SSJULigge
Atttttin nr. GAtlftBBU
e. rau# nwt
2fae lafM'^tlOA regi-tM ia year letter af 2 -My 1*59, nmtitrtniT
paragraph *.3.3 of
la a* foU;
a. She 9i* diaavtor ottal dtea am iMtali. bay m sad*
with 3-X7/32' dteater bale aad fit loaae os pipe tat snug mitrt end* of pip* cawing.
b. tfta tear layer ctf pip eowiag ia earned eltfa three elrea,
a&i terea serial baate for the outer ia*er. Single layer ia aecured vita terse aetel taaM*.
c. ythrette ia aonaally Ifi a borimtal piaae.
4. 720 Ttettioae/atete aau* full tyete
e. Ceverlasi are applied eith Joint, tarteML.
IMnwgily
O.
Haul
r;:-.. ;. -
I i,./;
^ Ajziz iAjtaig*
s.:i:.v^ .: ,<*' C
~
ttsaxtth ZiZt:i.-z'2z- ->- -
V? direction c; Chif, '*
Bureau ox Ships
Prepared by i7. 2. ghil&ote, Szt. 63c?* Typed }>y B. Sutter, 7/27/59
6*
