5.1
5.1 En En las las instalaciones instalaciones internas internas industriales industriales se se podrán podrán utilizar utilizar los los siguientessiguientes tres materiales: acero, cobre y polietileno (PE).
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 11 11 de de 3838
5.4
5.4 Las tuberías y los accesorios retirados de una instalación de gas naturalLas tuberías y los accesorios retirados de una instalación de gas natural seco, o de una instalación que ha transportado gas licuado de petróleo (GLP) pueden ser seco, o de una instalación que ha transportado gas licuado de petróleo (GLP) pueden ser vueltos a emplear para conducir gas natural seco, siempre que:
vueltos a emplear para conducir gas natural seco, siempre que:
5.4.1
5.4.1 Se determine que las tuberías y los accesorios que se van a reutilizarSe determine que las tuberías y los accesorios que se van a reutilizar cumplan con las exigencias de la presente NTP; y
cumplan con las exigencias de la presente NTP; y
5.4.2
5.4.2 Las Las tuberías tuberías y y los los accesorios accesorios que que van van a a ser ser reutilireutilizados zados hayan hayan sidosido limpiados, inspeccionados, probados y cumplan con los requerimientos de la presente limpiados, inspeccionados, probados y cumplan con los requerimientos de la presente NTP.
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ser conforme a la norma DIN 30670 o equivalente. El uso de cintas o pinturas epoxílicas ser conforme a la norma DIN 30670 o equivalente. El uso de cintas o pinturas epoxílicas estarán sujetos a aprobación por la entidad competente.
estarán sujetos a aprobación por la entidad competente.
6.1.2
6.1.2 Las tuberías de acero de superficie serán protegidas contra la corrosión conLas tuberías de acero de superficie serán protegidas contra la corrosión con pintura o galva
pintura o galvanización, o ambanización, o ambas.s.
6.1.3
6.1.3 Las tuberías de cobre enterradas contarán con un revestimiento para suLas tuberías de cobre enterradas contarán con un revestimiento para su adecuada protección anticorrosiva y mecánica.
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8.2
8.2 Tuberías Tuberías de de polietilenopolietileno
8.2.1
8.2.1 Las tuberías de polietileno deberán cumplir con la última edición de lasLas tuberías de polietileno deberán cumplir con la última edición de las normas: ISO 4437, CEN prEN 1555, también es aplicable en las instalaciones internas normas: ISO 4437, CEN prEN 1555, también es aplicable en las instalaciones internas industriales la norma ASTM D 2513.
industriales la norma ASTM D 2513.
8.3
8.3 Tuberías Tuberías de de cobrecobre
8.3.1
8.3.1 Las tuberías de cobre para gas natural deberán cumplir con las normas:Las tuberías de cobre para gas natural deberán cumplir con las normas: ASTM 837, ASTM B88, NTP 342.052 ó equivalente, con referencia principalmente a las ASTM 837, ASTM B88, NTP 342.052 ó equivalente, con referencia principalmente a las
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8.4.3
8.4.3 La La tubería tubería flexible flexible de de cobre cobre deberá deberá cumplir cumplir con con cualquiera cualquiera de de las las siguientessiguientes normas ASTM B 88 para el tipo K
normas ASTM B 88 para el tipo K o L, la ASTM B88M o la ASTM B 280.o L, la ASTM B88M o la ASTM B 280.
9.
9. ESPECIFICAESPECIFICACION CION TÉCNICA TÉCNICA DE DE LOS LOS ACCESORIOS ACCESORIOS Y Y BRIDASBRIDAS