A06 Specifications.pdf

HIF-C-02D

09-07-10

USGS SPECIFICATIONS - WRD - S-0024 (R)

April, 1980, Revised 4/5/95

Supersedes Specifications dated September 1976

Ellsworth-Type Reverse Lay

Electro-Mechanical, Single Conductor Cable

Ellsworth type reverse - lay cable is used for supporting sounding weights and current measuring equipment in the process of measuring the volume of water flowing in rivers.

REQUIREMENTS

: Construction and mechanical specifications for the several sizes shall be as follows:

I. HIF Stock Number 2316001: 0.084-inch (2.13mm) cable diameter

CONSTRUCTION

Nominal values Cumulative cable Diameter

Conductor: 7-wire, 0.008” (0.20mm) bright copper, #24 AWG (0.024” / 0.61mm) Insulation Armor: Inner Layer 18 wires, 0.008” (0.20mm) RHL (0.060” / 1.52mm)

: 0.010” propylene copolymer (0.044” / 1.12mm)

Outer Layer 18 wires, 0.012” (0.31mm) LHL (0.084” / 2.13mm)*

(All armor galvanized high strength steel, preformed and prestressed.)

MECHANICAL

Breaking strength: Not less than 500 lbs. (226.8 Kg) Cable outside diameter: 0.084” + 0.004” (2.13mm + 0.10mm)

II. HIF Stock Number 2316002: 0.100 inch (2.54mm) cable diameter

Conductor: 7-wire, 0.008” (0.20mm) bright copper, #24 AWG (0.025” / 0.64mm) Insulation Armor: Inner Layer 12 wires, 0.014” (0.36mm) RHL (0.074” / 1.88mm)

: 0.012” (0.31mm) propylene copolymer (0.046” / 1.17mm)

Outer Layer 18 wires, 0.014” (0.36mm) LHL (0.100” / 2.54mm)*

Breaking strength not less than 900 lbs. (408.3 Kg) Cable outside diameter 0.100” + 0.004” (2.54mm + 0.10mm)

III. HIF Stock Number 2316003: 0.125 inch (3.18mm) cable diameter

Cumulative cable Diameter

Conductor: 7-wire, 0.008” (0.20mm) bright copper, #24 AWG (0.024” / 0.61mm) Insulation Armor: Inner Layer 12 wires, .0175 (0.445mm) RHL (0.091” / 2.31mm)

: 0.018” (0.46mm) propylene copolymer (0.056” / 1.42mm)

Outer Layer 18 wires, .0175 (0.445mm) LHL (0.125” / 3.18mm)*

Breaking strength: Not less than 1500 lbs. (680.4 Kg) Cable outside diameter: .125” + .004 (3.18mm + 0.20mm)

*The difference, between the numerical sum and actual size, is due to the compression of the conductor insulation, after winding the armor layers around it.

WORKMANSHIP

: Workmanship shall be of a quality consistent with existing industry production standards and practices. Any material, which has been treated in a manner to conceal defects therein, shall not be offered to the Government for acceptance.

CONTRACTOR CERTIFICATIONS

: The contractor shall submit certification to the Contracting Officer and Contracting Officer’s representative prior to shipment that all reels contain continuous unspliced lengths of cable and that he has complied with all other requirements of the specification.

PACKAGING: The cable shall be furnished on reels with a flange diameter that will not exceed 48 inches (1.2m). Reels shall be returned for credit as applicable. (See contract schedule). Only one continuous unspliced length of cable shall be placed on each reel. No reel shall contain less than 5,000 feet (1524m). * The exact length will be specified in the purchase order. At least a six (6) inch (152.4mm) portion of both ends of the cable on each reel shall extend outside the reel. Each reel shall be marked in accordance with marking requirements paragraph.

MARKING: Each reel shall have an identification plate or label, (see fig. 1), of a size and shape determined by the contractor and affixed to the flange with the following data:

Name Plate/Label data

Contractor Name: _________________________________________________

Contract Number: _________________________________________________

Type Cable: _________________________________________________

Cable Size: _________________________________________________

Cable Construction: __________________________________________________

Cable Length: __________________________________________________

Cable Breaking Strength: _____________________________________________

Reel No. __________________________ Lot No. ______________________

Figure 1

Final Inspection and Test

: The Government shall inspect each reel, (see fig. 2), prior to acceptance, to assure that the specification has been adhered to.

Test will be conducted as per (a) and (b) cited below.

Any Item Not as Specified Shall be Cause for Rejection Check One Item Description Yes No

1. Cable size (outside diameter) as specified ----------------------

2. Cable construction as specified -------------------------------------

3. Cable reel flange size as specified ---------------------------------

4. Cable inner end lead as specified ----------------------------------

5. Cable outer end lead as specified ----------------------------------

6. Name plate and label affixed to reel as specified --------------

7. Name plate/label data as specified ---------------------------------

Figure 2

(a) Attached an ohmeter to center conductor and outer cable to check for continuity.

There should be none.

(b) Attached an ohmeter to center conductor on the inner lead and center conductor on the outer lead, check for short circuit.

PREPARATION FOR DELIVERY

: All items purchased hereunder shall be marked and packaged in accordance with this specification and commercial practices adequate to insure acceptance by common carrier and safe arrival at destination.

CABLE REELS

: Return all 36-inch (0.914m)diameter and larger flanged steel reels for applicable credit. Prior to procurement the contracting officer shall include this requirement in their Purchase Order or Contract Schedule.