Active Member
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[China]
Address: 1200 N Fuxing Rd Wutong Dist Tongxiang 314500 Zhejiang P. R China
Contact name:Warren Sun
Pasia Industries Ltd |
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Stainless Steel Sheathed Signal Transmission MI Cable for Nuclear
Reactor is generally used for the signal transmitting from the
nuclear reactor in nuclear power plant. The cable possesses good
performance on ability to withstand high temperature (600°C),
nuclear radiation, and mechanical loads. This specification covers
the general requirements for the design, construction, testing and
delivery of the mineral insulated, SS sheathed copper cables.
| Description | Item 1 | Item 2 | Item 3 | Item 4 | |
| Dia(OD) | 0.5mm+2% | 0.5mm+2% | 0.75mm+1.33% | 0.75mm+1.33% | |
| Sheath | 316L SS | 316L SS | SS 316L | 316L SS | |
| Wire material | Copper | Nichrome | Copper | Nichrome | |
| Wire size (ф) | 0.20mm+2% | 0.20mm+2% | 0.30mm+1.33% | 0.30mm+1.33% | |
| Insulation | MgO >98% | MgO >98% | MgO >98% | MgO >98% | |
| Line Resistance | <0.6 Ω/m | <35 Ω/m | < 0.3 Ω/m | < 16Ω/m | |
| IR at 600℃ | >5MΩ | >5MΩ | >5MΩ | >5MΩ | |
| Requirement | 100mX5Nos. | 100mX5Nos. | 100mX5Nos. | 100mX5Nos. | |
| Total length | 500 m+ 2% | 500 m+ 2% | 500 m+ 2% | 500 m+ 2% | |
——Mineral insulated coaxial cable: composed of conductor, mineral
powder insulation and metal sheath from inside to outside;
——Mineral insulated double shielded cable: it is composed of
conductor, inner insulating layer of mineral powder, inner
shielding layer, outer insulating layer of mineral powder and metal
sheath from inside to outside;
——Mineral insulated triaxial cable: it is composed of conductor,
mineral powder inner insulation layer, inner shielding layer,
mineral powder outer insulation layer, outer shielding layer and
metal sheath from inside to outside.
The components are as follows:
——Conductor: copper, nickel chromium alloy or pure nickel
——Internal / external insulation: high purity magnesia powder
(MgO), alumina powder (Al2O3) or silica powder (SiO2);
——Internal / external shielding: copper, 304L, 321, 316L, Inconel
600 or 825 alloy;
——Sheath: 304L, 321, 316L, Inconel 600 or 825 alloy.
Features
■ Optimised geometries to minimise surface transfer impedance
■ Designed to maintain screening performance of measurement chain
■ Very high insulation resistance to minimise signal losses
■ All cable supplied fully tested
■ Maximum operating temperature of 700 ºC in high neutron flux
fields
■ Dimensions and lengths can be adapted to particular applications
| Parameters | Technical data | |||
| Coaxial | Double shield | Triax | ||
| Conductor | Cores | 1 | ||
| OD,mm | 0.20 - 3.18 | |||
| Insulation thickness | Inner,mm | 0.35 - 6.1 | ||
| Outer,mm | - | 0.40 - 1.0 | ||
| Cable OD,mm | 4.0 - 19.1 | 3.0 - 19.1 | ||
| Sheath thickness,mm | 0.25 - 1.60 | 0.30 - 1.90 | ||
| Characteristic impedance,Ω | 50±5 | |||
Insulation thickness
| Core – inner shielding | ≥ 10000 MΩ | ||
| Inner shielding – outer shielding | - | ≥ 10000 MΩ | ||
| γ radiation dose,Gy/h | ≥ 2 × 106 | |||
| Maximum withstand temperature | ≥ 900℃ / 2min | |||
Structure materials (optional) | Conductor | Copper, nickel chromium or pure nickel | ||
| Inner insulation | High-pure MgO,Al2O3,SiO2 | |||
| Inner shielding | - | Copper,,304L,321,316L | ||
| Outer insulation | - | High-pure MgO,Al2O3,SiO2 | ||
| Outer shielding | - | - | Copper, | |
| Sheath | 304L,321,316L,Inconel 600,Alloy 825 | |||
