ML20032D761
| ML20032D761 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 04/30/1981 |
| From: | OMAHA PUBLIC POWER DISTRICT |
| To: | |
| Shared Package | |
| ML20032D747 | List: |
| References | |
| GSEE-0510, GSEE-510, NUDOCS 8111170456 | |
| Download: ML20032D761 (12) | |
Text
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GSEE-0510 Page 1 Revision 1
'Da.e 4-30-81 s
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.b SPECIFICATION #GSEE-0510 CABLE SPLICE DETAILS FOR.
ELECTRICAL PENETRATIONS (MADE FROM GHDR XA-545-E-462)
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Generating Station e ngineering Section
. Omaha Public nower District 9111170456 811007 1623 Harney Street DR ADOCK 05000h Omaha, Nebraska 68102
.I GSEE-0510 Page 7.
Revision i Date 4-3o.gt t.
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ped &TRATION FEED-THROUGH.
S UB A SS E/46 LY (EXISTlHG)
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<-PENETRATION CCNOUCTORS
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GSEE-0510 Page 3 Revision I Date 4.so cal NOTE 1 This drawing is net intended to depict details of penetration feed-through sub-assemblies or cable tray construction but to illustrate the method of splicing a typical cable to its associated penetration conductors.
NOTE 2 Before splicing individual conductors of a given cable, a length of heat-shrinkable Neoprene tubing shall be slipped over the cable far enough back from the splice section to prevent premature shrinking due to accidental heating. Application details for such tubing are described under Note 5.
NOTE 3 Suf ficient slack should be provided to permit 90 degree bends of the penetration conductors where feasible.
NOTE 4 Conductors of each cable are spliced to the appropriate penetration conductors by means of compression type uninsulated butt splices joining each stranded conductor of the cable to the corresponding solid penetration conductor. Where shielded conductors are required, the shields are carried through penetration assemblies as individual solid insulated conductors.
Heat-shrinkable cross-linked polyolefin tubing shall be used to insulate the normally uninsulated drain wires of any cable having two or more separately shielded pairs of conductors. The drain wire of snf cable having only one overall shielding tape shall not have insulation added in the field.
All conductor splices, including splices of uninsulated
- drain wires with their associated insulated penetration conductors, shall be insulated by means of heat-shrinkable cross-linked polyolefin tubing which has been shrunk over the splices and their adjacent conductors.
Splices joining copper conductors shall be AMP Solistrand butt splices. Strap-type splices shall be used except for No. 6 AWG and No. 4 AWG. conductors for which sight-hcle type splices shall be used.' Splices joining Alumel and Chromel conductors shall be AMP Insulation Support Strato-Therm strap-type butt splices.
Heat-shrinkable tubing shall be Amp Special Industries polyolefin thin-wall clear tubing.
Table No. 1 (Sheet 5) indicates the sizes of stranded and solid conductors to be spliced, the outside diameters of the conductors including insulation, the wire sizes and catalog numbers ~ of AMP splices and the expanded sizes and part numbers of Amp Special Industries tubing required fot insulating the s1pices.
Tubing sizes and part numbers are tentative.
In preparing a cable for splicing, the Neoprene jacket shall be stripped from the cable, and the cable fillers and shielding tape if present shall be removed.
Splices in each cable shall be spaced along the length of the splice section so that there is a minimum of two and one half inches between adjacent splices as measured from centerline to centerline.
All drain wire splices of a given shielded cable shall be located nearer to the unstripped cable end of the splice
l GSEE-0510 Page A Revision 1 Date 4-3o-St section than the remaining conductor splices.
In cables having separately shielded pairs, penetration conductors spliced to the drain wires shall be selected to be adjacent to the penetration conductors spliced to the associated pairs of cab' conductors.
Insulation shall be stripped from individual con-ducto rs, at: splices shall be crimped in accordance with recommendations by AMP Special industries.
Copper splices for No. 10 AWG or smaller conductors shall be1 crimped by means of AMP Special Industries Solistrand Certi-Crimp-ratchet hand tools. Larger copper splices shall be crimped by means of AltP Special Industries pnuematic or hydraulic tools designed for use with Soli-strand connectors.
Alumel and Chromel splices shall be crimped by means of AMP Certi-Crimp-ratchet hand tools designed for use with Strato-Therm connectors.
Clear heat-shrinkable tubing used to insulate conductor splices shall be applied according to Amp Special Industries recommended procedure, subject to approval by the Engineer, and using an electric heat gun which is capable of limiting the temperature to 300 F as measures one inch from its nozzle. Care should be taken to make certain that heat from the heat gun does not impinge upon nearby cables which may be damaged as a result of such heat.
The tubing shall be rotated a round each splice, before applying heat, so that the trade mark will not interfere with inspection of the completed insulated splice. Tubing shall be cut in lengths such that at least one half inch of the conductor insulation on each side of the splice shall be overlapped by the tubing after shrinking.
In those cases in which an uninsulated drain wire is spliced with an insulated pen.etration conductor, the tubing which covers the-splice shall overlap at least one half inch of the insulation of the penetration conductor and shall overlap at least one half inch of the uninsulated drain wire.
In certain cases, noted in Table No.
1, the outside diameters of conductors shall first be built up by.
shrinking smaller di: meter tubing over the conductor insulation before covering the crimped splice with the overlapping larger diameter tubing.
In these cases, the smaller diameter tubing shall butt against the crimped splices before shrinking and shall overlap the conductor insulation by at least one half inch after shrinking.
NOTE 5 All of the spliced conductors of a given cab'le shall be bundled together and further protected by a length of type Penntube VII-B heat-shrinkable Neoprene tubing manufactured by Penntube Plastics Co.,
Inc. A length of tubing shall be cut for each cable such that at 1 cast two inches of the tubing wher. shrunk will overlap the unstripped Neoprene jacket on the cable and at least four inches of the tubing, at the opposite end of the splice section will extend beyond the last conductor splice away from the unstripped - cable end of the splice section.
Before applying the Penntube VII-B tubing, build up one tape width of consecutive layers of one-inch-wide GE Irrathene SPT tspe around the penetration conductors at a centerline-to-centerline distance of three inches beyond the last conductor splice away from the unstripped cable end of the splice 'section.
Stretch one tape to approximately three-fourths of its original width except for the last few layers which should be applied with reduced tension and then the end pressed i
down. - The diameter over the tape shall be slightly greater than the maximum fully-shrunk inside diameter of the Penntube VII-B tubing to be applied.
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GSEE-0510 Page 5 Revision 1-Date 4-3o-Bi Seal the interstices between the -insulated penetration conductors and between the conductors and tape, at the side of the tape farthest from the unstripped cable end of the splice section using a small amount of Dow Corning Co. Silastic i
732 RTV adhesive sealant, I
Also, build up one tape width of consecutive layers of one-inch-wide GE Irrathene SPT tape around the unstripped Neoprene cable jacket at the opposite end of the -
splice section. The centerline of the build-up of tape shall be located one and one-half inches from the location where the insulated conductors emerge from the unstripped cable.
The thickness of the tape build-up shall be 1/16 inch all around the unstripped cable.
Only the.Penntube VII-B tubing over the unstripped-cable jacket and tape on one i
end of the splice section and the tubing over the taue at the opposite end of the splice section shall be heat shrunk. The tubing over these ends shall be shrunk to fit. tightly. No heat shall be applied to the remaining portion of the Penntube VII-3 tubing.
The heat-shrinkable Neoprene tubing shall be-applied in accordance with recommen-dations by Penntube Plastics C:o., Inc., subject to approval by the Engineer, and using an electric heat gun which is capable of limiting the temperature to 300 F.
as measured one inch from its nozzle. Table No. 2 (Sheet 8) indicates sizes of Penntube-VII-B based upon actual cable data.
NOTS 6 In the existing splices, individual wires are identified by color code only.. No wire markers are provided at the splice.
Where resplicing is required,'the con-tractor shall be responsible for matching the color code with wire numbers, provided at the other end of the cable.
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GSEE-0510 Page 4 Revision 1 Date A-so-si TABLE NO. 1 - CONDUCTOR SPLICES AMP Splice AMP SPECIAL TUBING STRANDED SOLID Wire Cat.
Size Part No.
Notes AWG 0.D.
AWG 0.D.
Size No.
COPPER CONDUCTORS 4
.322 2-6
.222.232 4 320238 1/2 603347-1 a
6
.274 6
.222.232 6
36886 3/8 603346-1 10
.176 10
.142.152 12-10 33189 1/4 603345-1 12
.152 12
.107.117 12-10 33189 3/16 603344-1 b
1/4 603345-1 14
.133 14
.090.100 16-14 327025 1/8 603343-1 b
3/16 603344-1 16
.108 16
.077.087 22-16 321801 1/8 603343-1 b-3/16 603344-1 18
.096 16
.077.087 22-16 321801 1/8 603343-1 b
3/16 603344-1 2-18
.046 14
.090.100 16-14 327025 1/16 603341-1 c,d 1/8 603343-1 3/16 603344-l' 16
.058 16
.077.087 22-16 321801 1/8 603343-1 e
3/16 603344-1 18
.046 16
.077.087 22-16 321801 1/16 603341-1 d
1/8 603343-1 3/16 603344-1 ALUMEL CONDUCTORS 16
.105 16
.077.087 22-16 1/8 603343-1 b
3/16 603344-1 18
.096 16
.077.087 22-16 1/8 603343-1 b
3/16 603344-1 CIIROMEL CONDUCTORS 16
.105 16
.077.087 22-16 1/8 603343-1 b
3/16 603344-1 18
.096 16
.077.087 22-16 1/8 603343-1 b
3/16 603344-1
- This information will be furnished later.
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GSEE-0510 Page 7 Revision 1 Date t 6l TABLE No.'(Cont'd)
Notes Two No. 6 AWG penetration conductors in parallel spliced with one No. 4 AWG a.
cable conductor.
b.
Shrink smaller tubing over insulated solid conductor only; then shrink larger tubing over composite splice.
c.
Bend No. 18.AWG drain wire into a hairpin turn in order to splice with No.
14 AWG penetration conductor serving as shield.
4.
Drain wire splices: 1/16 inch tubing shall be used to insulate drain wires of any cable having two or more drain wires. The drain wire of any cable having only one drain wire shall not be field insulated.
1/8 inch tubing shall be used to build up the insulation thickness of the insulated drain
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wire.
3/16 inch tubing shall be applied over the composite splice.
e.
Drain wire splices: All applicable cables have only one drain wire.
Shrink smaller tubing over insulated solid conductor only; then shrink
, larger tubing over composite splice.
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.s GSEE-0510 Page S Revision 1 Date'4.-9 -91 TABLE NO.2 - NEOPRENE TUBING SIZES Penntube VII-8 Cable Nominal Item No.
Cable O.D.
Excanded Size W16' 39" 1/2" W17 34" 3/8" V20 50" 5/8" W21 52" 5/8"
-W34 58" 3/4"'
W38 45" 1/2" V40 52" 5/8" W41.
61" 3/4" V42 79" 1"
. V44 1-1/4" W45 47" 5/8" W50 3/8" W57*
1/4" & 1/2"
- V59 5/8" W62 3/4" V63 7 / 8'_'
.W68 5/8" V73 7/8" Shrink smaller tubing over spliced conductors only; then shrink larger tubing over smaller tubing and overlapping unstripped cable.
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Pts. Nos. 3,617,45$ end 3.674,733 ADVANTAGES USES
- 1. Full 50r. reduction in size upon o; sicotion of heat 1
Electric a i.uulation on wires.
in exces s of 160:F.
2.
Mechanical protcClion for pipes and fittings.
- 2. Ccn be shrunk down in het water ihve 140'F) 3.
Scuff resistant jacketing for electrical cables and
- 3. Partici shrinkage occurs as low as 125 F.
harness.
- 4. Ocod electric 1 & mechenic:1 strength,
- a. Gives better supoort to. vires than a bulky. loose
- 5. Good resistence to corrosion ond chemicals.
fitting tubing
- 6. C:ntinuou s te.t.percture rcnge - 67:F to 212 F.
- b. Eliminates the difficult process of expanding
- 7. Does not support a ficme.
extruded tubing. puiting. vires tnrougn and
- 2. Cen be used over shcro edges without the neoorene 3How'ng t.bing to cotiaose.
tubing crccking,
- c. Elimir.ates tne possibility of damage to primary insulated '.* cites incurred *:/ extruding under hig's pressure and heat a jacket directly on to a wire bu ndte.
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.o ELECTRICAL CHEMICAL Dielectric Strength v/ mil - 2C0 min.
Solvent Resistance - Exe:ellent 10 Volume Resistivity ohm - Cm 10 min.
Water Absorotions % 1.0 max.
PHYSICAL Flammabili y - Scif Extingwsning t
Tensile Strength psi - 1800 min.
within 15 seconds.
Ultimate Etongation % - 300 min.
Corrosion Resistaa.ce - good Temaereture Range - 67*F to 212*F Heat Resistance STORAGE INSTRUCTIONS FOR 212'F for 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> - no cracking M AXlMUM 01M ENSION AL followed by tests for STA8ILITY Tensile Strength osi - 18C0 min.
1 mont.. ur cer 100'F Ultimate Elongation % - 250 4 man 3.s ncer 85' f Soecific Gravity - 1.40 12 n cr Ins under 70*F Heat Shock - 300'F for 5 brs. - no cracks Keeo av.ay from direct sunlight Colon Black Hardness - Shore A Durometer 85:5 l
DIMENS!ONS FOR PENNTUBE3ZII B - 2:1 HE AT SHRINKABLE NEOPRENE l
l Minimum Maximum l
Wall Thickness Size i
ExpandedI.D.
Recovered I.D.
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.375"
.188"
.040" :.010" 1/2"
.500"
.250"
.048" :.015" 5!8"
.625"
.313"
.052" :.015" 3/4"
.750"
.375"
.057" :.015" 7/8"
.875"
.438"
.065" :.015" 1"
1.000"
.500"
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.625"
.037" :.020" 11/2" 1.500"
.750"
.095" :.020" 13/4" 1.750"
.875"
.107" e.020" 2"
2.000" 1.000" 110":.020" I
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NEW OIMENSIONS IN ENGINEERED PRODUCTS PENNTUBE PLASTICS CO. Dmsion of Duon industries A Buncy Company h Holley & Madison Ave.. Clifton Heights, Pt. 19018 (215) 622-2300 Errort Divisico / PENNTUBE PLASTICS CO. INC. 5710 Emoire State Building