The nuclear-radiation proof insulation materials include aluminum silicate products, glass wool sewn felt and environment-friendly non-alkali glass wool insulation products (PS-5).
The nuclear-radiation proof insulation materials have, besides the common characteristics of normal aluminum silicate products, good performances of nuclear-radiation proof and anti-chemical-erosion. They can be manufactured into board, felt, pipe and rope products when different densities are chosen and different techniques are employed. These products, which have no erosion effects on stainless steel, can be used as heat insulation on regular and nuclear pipes and equipment.
The glass wool sewn felt, which is a high quality glass fiber product, is made by sewing up non-alkali glass fiber fabrics, using non-alkali glass threads, with medium-alkali glass wool as the middle layer. It has no irritating effects on the skin when being used. It has the main characteristics of heat insulation, sound insulation, anti-erosion, non-toxicity, stable quality and radiation proof (it can resist accumulative total amount radiation of 2*107rad; It will not break, rupture, be fragile and lose its flexibility. ). At present, it is widely used in nuclear power stations and other constructions.
Environment-friendly nuclear-radiation proof non-alkali glass wool insulation products (PS-5) are made of high quality non-alkali glass wool using adhesive with special manufacturing techniques. It has the main characteristics of heat insulation, sound insulation, anti-erosion, non-toxicity, stable quality, anti-radiation (it will not break, rupture, be fragile and lose its flexibility. ). At present, it is widely used in nuclear power stations and other constructions. In Oct. 2004, this product passed the approval of Zhejiang Provincial Administration of Science and Technology.
|
No. |
Item |
Specifications |
|
Aluminum silicate |
Glass Wool Sewn Felt |
Environment-friendly Non-alkali Glass Wool Product |
|
1 |
Density (kg/m 3 ) |
Board: 120-170
Pipe: 170
Rope: 500 |
40-80 |
Pipe Casing: 60-80
Felt: 35-40 |
|
2 |
Fiber Dia.(μm) |
5-7 |
≤ 6 |
2-4 |
|
3 |
Shot Content (%) |
≤ 15 |
≤ 0.3 |
≤ 0.2 |
|
4 |
Heating Permanent Line Diversification |
≤ 4 (95 0 º C, 24h) |
/ |
/ |
|
5 |
Moisture Content (%) |
≤ 1.0 |
≤ 1.0 |
≤ 0.5 |
|
6 |
Organic Content (%) |
≤ 2.5 |
≤ 1.5 |
≤ 4 |
|
7 |
Temperature for Shrinkage under Hot Load (º C) |
≥ 1000 |
≥ 1400 |
≥ 600 |
|
8 |
Hygroscopicity (%) |
≤ 5 |
≤ 5 |
≤ 5 |
|
9 |
Non-combustibility |
Non-combustibility A Class |
Non-combustibility A Class |
Non-combustibility A Class |
|
10 |
Thermal Conductivity (W/m.k) |
0.038 ( 120kg / m 3 ,70 º C) |
≤ 0.043 ( 70 º C);
≤ 0.08 ( 100 º C);
≤ 0.15 ( 400 º C) |
≤ 0.040 ( 50 º C);
≤ 0.046 ( 100 º C);
≤ 0.053 ( 70 º C);
≤ 0.060 ( 200 º C);
≤ 0.065 ( 250 º C) |
|
11 |
CI - Content (%) |
≤ 0.0025 |
/ |
/ |
|
12 |
CI - ,F - , Na + , SiO 3 2- |
/ |
Comply with the requirement of GB/T17393-1998
Standard specification of thermal insulation materials for use over austenitic stainless steel |
Comply with the requirement of GB/T17393-1998 Standard specification of thermal insulation materials for use over austenitic stainless steel |
|
13 |
Anti-nuclear-radiation |
/ |
accumulative total amount 2*10 7 rad |
When the total nuclear radiation time is 90.5 h, the total absorption is 264 KGy; when the the total nuclear radiation time is 218 h, the total absorption is 636 KGy; |
|
14 |
Alkali, Oxide Content (%) |
/ |
/ |
≤ 0.5 |
|
15 |
Moisture Resistivity (%) |
≥ 98 |
/ |
≥ 98 |
Deqing County Pusen Fireproof Material Co. Ltd. (PSFRMC) was established in 1976.It was rsformed to be a joint-stock company in 1998.PSFRMC at present has200 employees .PSFRMC has an annual production capacity of more than 8000 tons now. In 1999 PSFRMC got the IS09000 approval certificate for its quality system .The main products of PSFRMC are BAIYUN series of thermal insulation , heat insulation and fire-resistingmaterials , including aluminum silicate wool ,irradiation proof glass fiber, rock wool and mineral wool for ships . The products made from the above-mentioned are plates , pipes, carpets, felts, casing pieces, ropes and valve casings, flange casings ,etc.
The products of PSFRMC have been inspected and tested by National Fire Bureau,the Far East Fire Testing Center ,Shanghai Architecture Institute, Nanjing Glass Fiber Research and Design Institute, Navy Medicine Institute, China Aeroplane Manufacture Research Institute, Shanghai Communication University and Zhejiang University for several times andthe results show that the qualities of these products have reached and surpassed the requirements of the National Standards . The products have got the industrial productslicenses of China Navy ,CCS, China Nuclear Power, China Power, the Construction Industry,the Metallurgy Industry and the Chemical Industry . The products have been approved by the leading classification societies in the world and have got the certificates of CCS, DNV, ABS, LR, GL, BV, EC and NK.PSFRMC played an important role in the drafting and establishing of the national standards for this industry.
In 1999 thePS-2 mineral wool developed by PSFRMC got the national patent of (99116741.4) .In the same year , this product was approved by the Armament Department of China Navy and it got the Third Prize for Progress in Science and Technologyawarded by China Navy. In2000, the light A30 fire bulkhead was approved for Progress inScience and Technology awarded by China Navy . In 2002 the light A30 fire bulkhead wasapproved by the Armament Department of China Navy and it got the Third Prize for Progress in science and Technology awarded by China Navy. In2002 the environment-friendly PS-5 Radiation proof non-alkali glass wool insulation material for nuclear-powered submarines& nuclear power stations was developed .This product passed the approval ,which was organized by Zhejiang Scienae & Technology Department , of the committee consisting of experts from Macromolecule Institute of Zhejiang University, Materials Science and Engineering Department of Zhejiang University, Nanjing class FiberResearch and Design Institute ,Shanghai Nuclear Engineering Research and Design Institute, Biology Department of Zhejiang Science and Technology College, the Second Phase of Qinshan Nuclear Power Station (the Fifth Installing Company of China Nuclear Industry), Zhejiang Technical Physics Application Institute and Wuhan 719 Institute of CSIC.
PSFRC has been working together with enterprises belonging to Zhejinang University for the nation-class LNG ship project. Ultra low temperature polyurethane and ultra lowtemperature glass wool products have been developed, which have been approved by GTT and ABS.
