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ASTM F2023-13
Standard Test Method for Evaluating the Oxidative Resistance of Crosslinked Polyethylene (PEX) Tubing and Systems to Hot Chlorinated Water
Automaticky přeložený název:
Standardní zkušební metoda pro hodnocení oxidační Odolnost síťovaného polyetylenu (PEX) potrubí a systémy pro Hot chlorované vody
NORMA vydána dne 1.11.2013
Informace o normě:
Označení normy: ASTM F2023-13
Poznámka: NEPLATNÁ
Datum vydání normy: 1.11.2013
Kód zboží: NS-52486
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Anotace textu normy ASTM F2023-13 :
Keywords:
ICS Number Code 23.040.20 (Plastics pipes)
Doplňující informace
| Significance and Use | ||||||||||||||||||
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5.1 Environment or oxidative time-to-fail data derived from this test method, analyzed in accordance with Section 1.1 This test method describes the general requirements for evaluating the long-term, chlorinated water, oxidative resistance of cross-linked polyethylene (PEX) tubing produced in accordance with Specification F876 or PEX tubing/fitting systems in accordance with Specification F877 used in hot-and-cold water distribution systems by exposure to hot, chlorinated water. This test method outlines the requirements of a pressurized flow-through test system, typical test pressures, test-fluid characteristics, failure type, and data analysis. 1.2 Guidelines and requirements for
test temperatures, test hoop stresses, and other test criteria have
been established by prior testing of PEX tubing produced by the
three most common commercial methods of cross-linking: silane,
peroxide, and electron-beam (see Note 2). Other related system
components that typically appear in a PEX hot-and-cold water
distribution system can be evaluated with the PEX tubing. When
testing PEX tubing and fittings as a system, it is recommended that
the anticipated end-use fitting type(s) and material(s) be included
in the test circuit since it is known that some fitting types and
materials can impact failure times. Specimens used shall be
representative of the piping product(s) and material(s) under
investigation.
1.3 This test method is applicable
to PEX tubing and systems used for transport of potable water
containing free-chlorine for disinfecting purposes. The oxidizing
potential of the test-fluid specified in this test method exceeds
that typically found in potable water systems across the United
States.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 The following precautionary caveat pertains only to the test method portion, Section 12, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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