HomeMy WebLinkAboutHyannis Marine Service - Installation Plan002V0 Jim
PRE-ENGINEERED INSTALLATION INSTRU ..TIONS
PROVEN PROTECTION UNDERGROUND STEEL STORAGE TANKS WITH sti-Pi CORROSION CONTROL SYSTEM
—' 1. The excavation shall be free from any hard or sharp material sides of tank by hand shoveling and tamping to ensure that
that may cause damage to the tank coating. (Care shall be the tank Is fully and evenly supported around bottom quadrant.
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taken during installation that foreign matter is not Introduced 11. The plugs ngs shall be removed. Apply
S�� T � i G lG F LLo2 S LAFS of gs at unused ope into the excavation or backfill.) open
Ings
non-hardening pipe sealant to internal bushing
3 30� F51 GOl•�G1Z E'r1= . I 2. The bottom of the excavation shall be covered with clean threads Permanent metal plugs shall be installed at all unused
3' 577- ✓L RE 11�J F ; v p 4 3 B AVS e I o. C . sand or gravel to a depth of one foot suitably graded and openings
leveled.
_ . K- .-'rA►.J K.. 1�M A I r.JD£Q oF S L.AS -PBS 11.1. The di -electric bushings in :»-P; tanks shot not be removed
ve,#T o Q 11J S"r A LL GOIJ G I Z+ ��I FvRC,F_p �( l0 sill RE , 3. The excavation shall extend a distance of at least one foot from the unused openings The plugs In tank openings which
3000 GAL -'j�A d V— . I F- Lpp(z 5 L A F3 around the perimeter of the tank providing sufficient clearance are to be used should not be over -tightened as this may
PLACE. 'rA_0 K VST / j ALL STEEL TO 13E G2APE (00 ,AxSr1`•I for anodes cause the bushing to unscrew with the plug Care shalt be
I E. hJ L J ALL e_ e -AT P 4. An as test of the tank above round is recommended. Pressure taken not to crossthread or damage the
P P g norlrnetallic bush -
lip 1 �_ 5C) I L SEn1EATFI 5LAB TO g1= � fiAGTED should not exceed 5 i s when replacing I
P T � • I �.�.-.------ � pounds per square inch (PSIG) while a � P n9 P ugs or installing required tank piping.
D ET1 jZA I tJ E L�ATI ON Tc> AA -,5F40 _ _ soap solution is applied to weld seams Note: Dual wall tank 11.2. Prior to backfilling, all openings shall be visually inspected to
1 I.1 1i4 E FIELD.air testing will differ. Consult Tank fabricator for air test assure that the sti-P; dielectric nylon bushings remain in
— — — — — — — — — — — — — — — — — — — — — — recommendations. place. Where flanged openings have been used, the dielec-
b. Before placing the tank in the excavation, all dirt clods and tric isolation shall be confirmed with a continuity tester. No
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similar foreign matter shall ,be cleaned from the tanks, and current shall pass through the factory Installed dielectric
areas of coating damage shall be repaired with a touch up flanges Dielectric isolation is required to assure tank integrity
coating provided. 12. Where air or hydrostatic testing is required after Installation, It
is recommended that the pressure applied shall not be in ex -
5.1. When so shipped, remove protective plastic covering from cess of 5 pounds per square inch (PSIG) as measured at the
weld -on zinc anodes to assure proper anode operation. top of the tank.
Verify anode integrity prior to backfill. 13. Prior to completion of the backfill, the Protection Prover 2m
3 �AIZS .0 IZL�. O -G, OLJE I, JA`,( 6. Equipment to lift the tank shall be of adequate size to lift and monitoring terminal located near the top of the tank must be
lower the tank without dragging and dropping to ensure no
damage to the. tank or the coating. positioned as follows:
7. Tanks shall be carefully lifted and lowered by use of cables
13.1 Select a terminal location on a pi near grade that will be
- or chains of adequate length (not less than 45° included through a grade manhole upon completion of
- V ;
,
� ._ angle) attached to the lifting lugs provided. A spreader bar installation.
c
_ a accessible
13.2 loosen the black nylon i lashing b releasing the locking
L ' _ '_-': ' • ' '.• ". . ' .. should be used where necessary.Under no circumstances use Y pipe ng Y k�c
tate Uncoil enough
SGRLE = _..I O - chains or slings around the tank shell. g lead wire from the tank mounting lug to
ZI 17.1 stl-P; tanks may be equipped with either zinc or magnes- reach the terminal location with an additional 4 feet of slack.
ium anodes Zinc anodes are effective in all soil resistivities 13.3 Secure the PP21 terminal to the pipe by tightening the black
Get l G 5 5 � � I L Magnesium anodes are designed for soil resistivities 2000 nylon pipe lashing. The lead wire terminotior , shall remain
_- ohm -cm or greater. sealed.
7.2. After an stl-P; tank has been placed in the excavation, if 13.4 Route wire to avoid strain or breakage during backfill. Do not
AGG E SS TO "fArJ� GO�/E2 TO 1 It.15TALLt� anode is connected by a lead wire, attachment to the tank cover PP2® terminal with backfill material.
TA r,1 i[ PL1J5I-i hJ I S LAS SEE SPAS -7 shall be checked to assure this connection has not been 14. As an alternative, this tank may be equipped with -a Protection
damaged. Where damaged. the connection must be rees- > Prover 1® monitoring system, which includes a monitoring test
Top stwAFS TO ToP TA14V- _-I 11.
tablished in strict accordance with stl-P, specifications station mounted at the end of the tank. Prior to backfilling, ex-
8. Where anchoring by means of a concrete slab is required, the tend the monitoring system to 4" below grade level without-
�\ \�? \" �" ;�; \ �; tank must not be placed directly on the pad. A layer of fine pulling It * •
� � \, � /� � f/��, �.,/ ��%/f,. �f• ng ' out of the mounting bracket. The PPI* test station
-0 LJ iJ DA-(" IOtJ WALL \; ; / �j,,�; ��j /j" // , / \ / ��% \ or pea gravel, sand or Na 8 crushed stone (Na 8 coarse shall be protected by a grade manhole of 7-I/i" minimum
r; I-1 E I G� i -J �( IJ Ksio I, I1.1 y 3000 GAL -ra►J iL\\,`\"\\j % aggregate ASTM -448) at least 6 inches deep must be spread diameter.
\,������� evenly over the dimensions of the
from the d. Pad to separate the tank
15. Contact between the steel tank and the following equipment
,. �� �. , \ . ��.." �.,; ; ,, `. \� ��• �', can nullify the cathodic protection design: external or internal
eVtA:PAC(Ep 301 L -rO The tank shall not be placed on any other hard or sharp piping, pumps, valves, electrical gaging or monitors equip -
material ng eq P-
3/8 PEAST09f- IJOPrz-2 -FAtIK �."v .. ,,,. < �
material that can cause deformation of the tank or damage rnent and r
900/. p,A5N0 �, grounding systems A simple continuity test between
1 to the coating. the PP20 lead wire and each connected system will verify
SEE (1,J sTA LLAT I Ota 8.1 If installation area is in a tidal area, the tank "bedding" the electrical isolation. Continuity should not be present.
p material should be fine grovel or pea gravel, rather than sand. 16. The backfill shall be deposited carefully around tank and to
(�STF-ue�T)Q�S {Z I�J�� _. ... --- O C ^in! •+nrn shn,�!rd to exsrci-.-d ,..�....n t....4 tlin.. hold do da h s a a f *^ dGinn - 10
!! -r.......�. .�-.......�- ."....,v.- .v....,, �.w.v.n,b - sf.•n _. _...G vNitt G. �t IeiaSt CilE3 ,GvtCYV6F-t�ik ry CYGId n abo
C straps to ensure that the straps are separated from the tanks coating especially where tamping Is required. (See NFPA 30
X 5 L G T 149 1 by separating pad made of an inert Insulatingdielectric and state or local codes for depth of cover
material. The separating pad should be at least 2 inches wider 17. All tanks must be monitored to assure proper cat lhodic pro -
than hold down straps' width and must be carefully placed taction of the tank. Monitoring shah be occomplistled by taking
anywhere on the tank where hold down straps would come structure to soil voltage readings within 1 year after Installa-
- Into direct contact with the tank shell tion, and then in 5 year Intervals for the life of the installation
l0. Horr&Veneous backfill corsisting of clean sand, gravel, or other Follow applicable local, state, and federal regulations for ad -
non -corrosive Inert materials shall be placed along bottom ditional tank monitoring requirements
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EERING 749 Main Street Suite B ♦ Box 266
+CIA
� TES OF Osterville, Massachusetts 02655
✓� ( rn (617) 420 2223
$pSTERVILLE
0 Consulting and design engineers Civil and structural
— TOLERANCES REVISIONS LJtIDE12620lJdP .5TE-F-L STORAGE TAov-
IEXCEPr AS NOTED! NO. DATE BY W STA LL AT I C �J PLA O
DECIMAL SIIZIS' P.J. D• �A 1�� {L RiCEIZ N`(At�lnli5 MA�I�IE
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- a FRACTIONAL DRAWN BY �. J . SCALE O TE r7 MATERIAL
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ANGULAR 4 CHK•D DATE a 7 DRAWING NO.
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