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Approvals and Standards 3Rd Party Control and Standards Double Containment Piping System General Information Connection System L

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Approvals and Standards 3Rd Party Control and Standards Double Containment Piping System General Information Connection System L Index Material Properties General properties page 103 - 107 Material Properties Specific properties page 108 - 110 Applications page 111 Pressure curves and component operating pressures page 112 - 123 Creep modulus curves page 124 - 128 Permissible buckling pressures page 129 - 132 Behaviour at abrasive fluids page 133 Chemical resistancy page 134 - 136 Installation Guidelines Transport, Handling, Storage page 137 Installation Guidelines General installation guidelines page 138 Machining page 139 Calculation Guidelines System of units page 140 SDR, Component operating pressure page 141 Operating pressure for water dangerous media page 142 Wall thickness, External pressure, necessary stiffening for page 143 - 145 pipes with buckling strain Pipe cross section, Determination of the hydraulic pressure page 146 - 149 Calculation Guidelines loss Flow Nomogramm page 150 Dog bone load page 151 Support distances, Support distance at fixed piping page 152 - 158 systems, Change in length, Minimum straight length Buried piping systems page 159 - 160 Connection Methods General standard, Application limits page 161 - 162 Connection Methods Heating element butt welding, pressure test page 163 - 173 Non-contact butt welding (IR-welding) page 174 Heating element socket welding page 175 - 178 Electrofusion welding page 179 - 184 Hot gas welding page 185 - 188 Extrusion welding page 189 - 191 Detachable joints page 192 Double Containment Piping System General Information page 193 - 194 Connection System page 195 - 197 Double Containment Piping Leakage Detection System page 198 Installation page 199 - 201 Approvals and Standards 3rd party control and standards page 202 - 203 German page 1 - 102 Approvals and Standards Material Properties General properties of PE Advantages of PE (Polyehylene) Material Properties z UV-resistance (black PE) Material Properties As a result of continuous development of PE z Flexibility molding materials, the efficiency of PE pipes and z Low specific weight of app. 0,95g/cm3 fittings have been improved considerably. This fact z Favourable transportation (e. g. coils) has been taken into account by the introduction of z Very good chemical resistance new international standards (ISO 9080, EN1555, z Weathering resistance EN12201), which lead to higher permissible z Radiation resistance operating pressures. z Good weldability z Very good abrasion resistance Polyethylene (PE) for pressure pipe applications is z No deposits and no overgrowth possible no longer classified by its density (for example PE- Due to less frictional resistance less pressure LD, PE-MD, PE-HD) as it is now divided into MRS- z Losses in comparison with e. g. metals strength classes. z Freeze resistance z Resistant to rodents Installation Guidelines In comparison to other thermoplastics PE shows z Resistant to all kinds of microbic corrosion an excellent diffusion resistance and has therefore been applied for the safe transport of gases for Polyethylene type PE 100 many years. The new classification is based on the minimum These materials can also be described as required strength (MRS), which has to be applied polyethylene types of the third generation (PE-3) for designing long-term loaded PE pipes operating resp. also as MRS 10 materials. at a temperature of +20°C for at least 50 years. This is a further development of the PE materials Thus the first-generation pipes are named PE32, which shows by a modified polymerisation process PE40 and PE63 and the second-generation pipes an amended mol mass distribution. Therefore PE PE80, the third-generation are named PE100.The 100 types have a higher density and by this figures stand for the MRS values in bar. Expressed improved mechanical properties comes a raised in megapascal the design stresses for PE80 and stiffness and hardness. Also the creep pressure Calculation Guidelines PE100 pipes will consequently be 8,0 and 10,0 and the resistance against rapid crack propagation MPa. are also increased. Consequently, this material is suitable for the production of pressure pipes with larger diameters. Other essential advantages of this material are the In comparison to usual pressure pipes out of PE UV-stability (if its black coloured), and the flexibility with less wall thicknesses the corresponding of the molding material ("flexible piping system"). pressure rating will be achieved. Physiological non-toxic Modified polyethylene PE 80-el (Polyethylene, electro-conductable) With respect to its composition polyethylene complies with the relevant food stuff regulations Due to the electro-conductibility, PE 80-el is often (according to ÖNORM B 5014, Part 1, BGA, KTW used for the transport of easy combustible media Connection Methods guidelines). or for the conveying of dust as for these piping PE pipes and fittings are verified and registered systems, a connection to earth can be performed. regarding potable water suitability according DVGW guideline W270. Behaviour at radiation strain HH Pipes out of polyethylene may be applied across CC the range of high energy radiation. Pipes out of PE are well established for drainage of radioactive HHn sewage water from laboratories and as cooling water piping systems for the nuclear energy industry. The usual radioactive sewage waters contain beta and gamma rays. PE piping systems do not become Chemical structure of polyethylene Double Containment Piping radioactive, even after many years of use. Also in environment of higher radio activity, pipes out of PE are not damaged if they are not exposed during their complete operation time to a larger, regularly spread radiation dose of < 10 4 Gray. 103 APP-Rovals and Standards Material Properties General properties of PP Advantages of Polypropylene 3 Material Properties low specific weight of 0,91g/cm Material Properties According to DIN 8078, three, different types of z 3 polypropylene are recognised: (PVC 1,40g/cm ) Type 1: PP-H z high creep resistance (homopolymere) z excellent chemical resistance Type 2: PP-B z TiO2 pigmentation (block-copolymere) z high resistance to ageing by thermal stabilizing Type 3: PP-R good weldability (random-polymere) z excellent abrasion resistance z smooth inside surface of the pipes, therefore By copolymerisating with ethylene special z no deposits and no growth over possible due properties are achieved as in PP types 2 and 3, which to less frictional resistance result in an improved processability (e.g. lower z less pressure losses in comparison with e. g. danger of shrinkage cavitation at the injection metals molding process) and higher impact strength of the z non-conductive, therefore the structure is not Installation Guidelines products in comparison to PP-H. affected by tracking currents z very good processable thermoplastic PP-R and copper (e. g. by deep drawing) z PP is a bad conductor of heat - therefore in In direct contact with copper and PP-R deteriorates, most cases, no thermal insulation is required especially at higher temperatures, the physical for hot water piping systems properties of PP-R. Due to the accelerated thermal oxidation, heat ageing is faster. General properties of Polypropylene (Standard types) Physiological non-toxicity Behaviour at radiation strain With respect to its composition, polypropylene complies with the relevant food stuff regulations At an absorbed dose of < 10 4 Gray polypropylene Calculation Guidelines (according OENORM B 5014 Part 1, FDA, BGA, KTW piping systems can be applied without essential guidelines). resistance decrease. At a higher energy rays than 10 4 Gray it may AGRU pipes, sheets and round bars are made of come to a temporary resistance increase due to nucleoid PP-H (Beta (β)-PP) since the middle of the cross-linking of the molecular struc-ture. But at seventies. durable radiation strain, it comes to a rupture of Fittings are also produced out of PP-R (poly- the molecular chains and therefore by the damage propylene-random-copolymere) since the end of of the material to a serious resistance decrease. the seventies. Both types have been stabilized against high temperatures and are the best suited materials for the production of pressure piping systems. Behaviour at UV-radiation Connection Methods In comparison to other thermoplastics such as PE- Grey polypropylene pipe lines are not UV-stable HD and PVC, PP shows a thermal stability up to so they must be adequately protected. As effective 100°C (short-time up to 120°C for pressureless protection against direct solar radiation, a protection systems). layer (AGRU-Coating) or an insulation is possible. It is furthermore possible to compensate the arising PP shows good impact strength in comparison to damage of the surface by a corresponding wall PVC. The impact strength depends on temperature, thickness addition as the damage only occurs on increases with rising temperatures decreases with the surface (according to the DVS standard 2210- falling temperatures. 1). The wall thickness addition may not be less than 2 mm, a maximum expected operating period of 10 years has to be taken into account. HH As polypropylene is not equipped with light-stable CC colour pigments normally, it may come to a change of colour (fading) by long-time weathering. Double Containment Piping HCH As an alternative a high-temperature-resistant, black 3 n PP material can be used. The black PP material is stabilized against UV radiation for 10 years.The application conditions should be clarified with the Chemical structure of PP technical engineering department. 104 APP-Rovals and Standards Material Properties General properties of PP Differences to standard types of PP Material Properties General properties of modified PP PP-R, black: Material Properties On account of the most specific requirements (Polypropylene-random-copolymere, black arising in the construction of piping systems for coloured) the chemical indu-stry and in apparatus engineering The essential advantage of this black coloured flame retardant and electro-conductive special material type is the UV resistance for an operating types have been developed. period of 10 yaers, which is not available with grey For example static charging due to the flow of fluids PP.
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