NOR
NORMA
MA TÉC
TÉCNICA
NICA
NTP
NTP 111
111.01
.0100
PERUANA
2003
PERUANA
2003
Comisión de Reglamentos Técnicos y Comerciales - INDECOPI Comisión de Reglamentos Técnicos y Comerciales - INDECOPI Calle
Calle de de La La Prosa Prosa 138, 138, San San Borja Borja (Lima (Lima 41) 41) Apartado Apartado 145 145 Lima, Lima, PerúPerú
GAS NATURAL SECO. Sistema de tuberías para
GAS NATURAL SECO. Sistema de tuberías para
instalaciones internas industriales
instalaciones internas industriales
NATUR
NATURAL DAL DRY GARY GAS. PipiS. Piping sng systeystem fom for indur industrial strial instainstallatillationsons
2003-11-27 2003-11-27
1ª Edición
1ª Edición
R.0114-2003/INDECOPI-CRT.Públicada
R.0114-2003/INDECOPI-CRT.Públicada el el 2003-12-17 2003-12-17 Precio Precio basado basado en en 38 38 páginaspáginas I.C.S.:
I.C.S.: 75.180.01 75.180.01 ESTA ESTA NORMA NORMA ES ES RECOMENDABLERECOMENDABLE Descriptores: Gas natural seco, tuberías, i
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Cancel Anytime. ÍNDICE ÍNDICE página página ÍNDICE i ÍNDICE i PREFACIO i PREFACIO i 1. 1. ALCANCE ALCANCE 11 2.
2. REFERENCIAS NORMATIVAS REFERENCIAS NORMATIVAS 11 3.
3. CAMPO CAMPO DE DE APLICACIÓN APLICACIÓN 66 4.
4. DEFINICIONES DEFINICIONES 66 5.
5. SELECCIÓN SELECCIÓN DEL DEL MATERIAL MATERIAL DEL DEL SISTEMA SISTEMA DE DE TUBERÍAS TUBERÍAS 1010 6.
6. SELECCIÓN SELECCIÓN DEL DEL MATERIAL MATERIAL DE DE LAS LAS TUBERÍAS TUBERÍAS EN EN FUNCIÓN FUNCIÓN DE DE SUSU
UBICACIÓN. 11
UBICACIÓN. 11
7.
7. SELECCIÓN SELECCIÓN DEL DEL MATERIAL MATERIAL DE DE LAS LAS TUBERÍAS TUBERÍAS EN EN FUNCIÓN FUNCIÓN DELDEL
DIÁMETRO 12
DIÁMETRO 12
8.
8. ESPECIFICACIONES TÉCNICAS ESPECIFICACIONES TÉCNICAS DE DE LAS LAS TUBERÍAS TUBERÍAS 1212 9. ESPEC
9. ESPECIFICACIONES IFICACIONES TÉCNICAS TÉCNICAS DE DE LOS LOS ACCESORIOS ACCESORIOS 1414 Y BRIDAS
Y BRIDAS 10.
10. ESPECIFICACIONES ESPECIFICACIONES TÉCNICAS TÉCNICAS DE DE LAS LAS VÁLVULAS VÁLVULAS 1515 11.
11. ESPECIFICACIÓN ESPECIFICACIÓN TÉCNICA TÉCNICA PARA PARA EL EL SISTEMA SISTEMA DE DE 1515 SEGURIDAD DEL EQUIPO DE CONSUMO
SEGURIDAD DEL EQUIPO DE CONSUMO 12.
12. EQUIPOS EQUIPOS DE DE REGULACIÓN REGULACIÓN Y Y MEDICIÓN MEDICIÓN 1616 13.
13. USO USO DE DE VÁLVULAS VÁLVULAS 1717 14.
14. DISEÑO DISEÑO Y Y DIMENSIONAMIENTO DIMENSIONAMIENTO DEL DEL SISTEMA SISTEMA DE DE TUBERÍAS TUBERÍAS 1818 15.
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17.
17. CONSTRUCCIÓN CONSTRUCCIÓN DE DE TUBERÍAS TUBERÍAS SUBTERRANEAS SUBTERRANEAS 2626 18.
18. CONSTRUCCIÓN CONSTRUCCIÓN DE DE TUBERÍAS TUBERÍAS DE DE SUPERFICIE SUPERFICIE 2828 19.
19. SOPORTES, SOPORTES, ANCLAJES ANCLAJES Y Y GANCHOS GANCHOS 2929 20.
20. PRUEBA PRUEBA DE DE HERMETICIDAD HERMETICIDAD 3030 21.
21. PLANO PLANO CONFORME CONFORME A A OBRA OBRA 3131 22. RE
22. RECOMENDACIONES COMENDACIONES GENERALES GENERALES PARA PARA EL EL DISEÑO, DISEÑO, LA LA 3131 EJECUCIÓN Y LA PUESTA EN MARCHA
EJECUCIÓN Y LA PUESTA EN MARCHA 23.
23. NORMA NORMA TÉCNICA TÉCNICA DE DE APOYO APOYO 3232 24
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PREFACIO PREFACIO
A.
A. RESEÑA RESEÑA HISTÓRICAHISTÓRICA
A.1
A.1 La La presente presente Norma Norma Técnica Técnica Peruana Peruana fue fue elaborada elaborada por por el el Comité Comité TécnicoTécnico de Normalización de Gas Natural Seco, mediante el sistema 2 u Ordinario, durante los de Normalización de Gas Natural Seco, mediante el sistema 2 u Ordinario, durante los meses de octubre 2002 a junio del 2003, utilizó como antecedente a los que se indican en meses de octubre 2002 a junio del 2003, utilizó como antecedente a los que se indican en el capítulo
el capítulo correspondiente.correspondiente.
A.2
A.2 El El Comité Comité Técnico Técnico de de Normalización Normalización de de Gas Gas Natural Natural Seco, Seco, presentó presentó a a lala Comisión de Reglamentos Técnicos y Comerciales -CRT-, con f
Comisión de Reglamentos Técnicos y Comerciales -CRT-, con fecha 2003-07-18, el PNTPecha 2003-07-18, el PNTP 111.010:2003, para su revisión y aprobación; siendo sometido a la etapa de Discusión 111.010:2003, para su revisión y aprobación; siendo sometido a la etapa de Discusión Pública el 2003-08-20. No habiéndose presentado ninguna observación, fue oficializado Pública el 2003-08-20. No habiéndose presentado ninguna observación, fue oficializado como Norma Técnica Peruana
como Norma Técnica Peruana NTP 111.010:2003 GAS NATURAL SECO. Sistema deNTP 111.010:2003 GAS NATURAL SECO. Sistema de tuberías para instalaciones internas industriales
tuberías para instalaciones internas industriales. 1ª Edición, el 17 de diciembre del. 1ª Edición, el 17 de diciembre del 2003.
2003.
A.3
A.3 Esta Esta Norma Norma Técnica Técnica Peruana Peruana ha ha sido sido estructurada estructurada de de acuerdo acuerdo a a las las GuíasGuías Peruanas GP 001:1995 y GP 002:1995.
Peruanas GP 001:1995 y GP 002:1995.
B.
B. INSTITUCIONES INSTITUCIONES QUE QUE PARTICIPARON PARTICIPARON EN EN LA LA ELABORACIÓNELABORACIÓN DE LA NORMA TECNICA PERUANA
DE LA NORMA TECNICA PERUANA
Secretaría
Secretaría Instituto de Petróleo y GasInstituto de Petróleo y Gas Presidente
Presidente Wilfredo Wilfredo Salinas Salinas Ruiz-ConejoRuiz-Conejo Vicepresidente
Vicepresidente Aldo Aldo EspinozaEspinoza Secretario
Secretario César Luján César Luján RuizRuiz
ENTIDAD REPRESENTANTE
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EMPRESA
EMPRESA ELECTRIELECTRICA CA DE DE PIURA PIURA – – EEPSA EEPSA Alberto Alberto Trujillo Trujillo PeredaPereda PETRO-TECH
PETRO-TECH PERUANA PERUANA S.A. S.A. Félix Félix RuizRuiz PLUSPETROL
PLUSPETROL PERU PERU CORPORATION CORPORATION S.A. S.A. Aldo Aldo EspinozaEspinoza Antonio Tella Antonio Tella CERÁMICA
CERÁMICA LIMA LIMA – – CELIMA CELIMA Rolando Alguiar Rolando Alguiar Q.Q. (Corporación Cerámica)
(Corporación Cerámica) DOE
DOE RUN RUN PERU PERU SRL SRL – – Huver Huver Huanqui Huanqui GuerraGuerra LA OROYA DIVISIÓN
LA OROYA DIVISIÓN MINISTERIO
MINISTERIO DE DE ENERGIA ENERGIA Y Y MINAS- MINAS- DGH DGH Luis Luis Zavaleta Zavaleta VargasVargas (Dirección
(Dirección General General de de Hidrocarburos) Hidrocarburos) Pablo Pablo MaldonadoMaldonado OSINERG
OSINERG Juan Ortiz Juan Ortiz G.G. PETROPERU
PETROPERU S.A. S.A. OPERACIONES OPERACIONES TALARA TALARA Daniel Daniel Díaz Díaz del del AguilaAguila SUDAMERICANA
SUDAMERICANA DE DE FIBRAS FIBRAS S.A. S.A. Ricardo Ricardo TolentinoTolentino Luis Vargas F. Luis Vargas F. CERTIPETRO
CERTIPETRO – – Amador Amador Paulino Paulino R.R. FACULTAD
FACULTAD DE DE INGENIERIA INGENIERIA DE DE PETROLEO PETROLEO Beatriz Beatriz Adaniya Adaniya H.H. UNIVERSIDAD NACIONAL DE INGENIERIA
UNIVERSIDAD NACIONAL DE INGENIERIA INSTROMET
INSTROMET PERU PERU S.A.C. S.A.C. Julio Julio Rodríguez Rodríguez VadaVada SGS
SGS DEL DEL PERU PERU S.A.C. S.A.C. Fernando Fernando CorreaCorrea UNIGAS-FIM
UNIGAS-FIM UNIVERSIDAD
UNIVERSIDAD NACIONAL NACIONAL DE DE INGENIERIA INGENIERIA Santiago Santiago Paredes Paredes JaramilJaramillolo MEGATOTAL
MEGATOTAL INGENIEINGENIERIA RIA SAC. SAC. Harold Harold RobillardRobillard Jorge Besio Jorge Besio QUÍMICA
QUÍMICA SUIZA SUIZA S.A. S.A. Juan Juan Díaz Díaz CamargoCamargo Milan Pejnovic Kapa Milan Pejnovic Kapa PROCOBRE
PROCOBRE PERU PERU S.A. S.A. Harry Harry EstradaEstrada
Orlando Ardito Chávez Orlando Ardito Chávez GAS
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 1 1 de de 3838
GAS NATURAL SECO. Sistema de tuberías para
GAS NATURAL SECO. Sistema de tuberías para
instalaciones internas industriales
instalaciones internas industriales
1. OBJETO
1. OBJETO
Esta Norma Técnica Peruana establece los requisitos que debe cumplir del sistema de Esta Norma Técnica Peruana establece los requisitos que debe cumplir del sistema de tuberías para el suministro de gas natural seco en las instalaciones internas industriales en tuberías para el suministro de gas natural seco en las instalaciones internas industriales en referencia a la especificación de los materiales, el diseño y dimensionamiento, la referencia a la especificación de los materiales, el diseño y dimensionamiento, la construcción y las exigencias mínimas de seguridad para
construcción y las exigencias mínimas de seguridad para una operación confiable.una operación confiable.
Esta Norma Técnica Peruana incluye consideraciones generales y referencias normativas Esta Norma Técnica Peruana incluye consideraciones generales y referencias normativas internacionales para los equipos de regulación de presión y medición, así como los internacionales para los equipos de regulación de presión y medición, así como los requerimientos de seguridad para los sistemas de combustión de los equipos de consumo. requerimientos de seguridad para los sistemas de combustión de los equipos de consumo.
En referencia a los equipos de
En referencia a los equipos de consumo, estos deberán ser certificados.consumo, estos deberán ser certificados.
En todas aquellas aplicaciones que están fuera del alcance de esta NTP como son el En todas aquellas aplicaciones que están fuera del alcance de esta NTP como son el sistema de tuberías para el transporte y la distribución de gas natural seco, el gas natural sistema de tuberías para el transporte y la distribución de gas natural seco, el gas natural comprimido para uso vehicular y plantas de generación eléctrica, entre otros, deberán comprimido para uso vehicular y plantas de generación eléctrica, entre otros, deberán utilizar las
utilizar las normas técnicas nacionales o internacionales adecuadas.normas técnicas nacionales o internacionales adecuadas.
2.
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 2 2 de de 3838
2.1
2.1 Normas Normas Técnicas Técnicas PeruanasPeruanas
2.1.1
2.1.1 NTP NTP 342.522:200342.522:2002 2 Cobre Cobre y y aleaciones aleaciones de de cobre. cobre. Desde Desde Parte Parte 11 hasta parte 20
hasta parte 20
2.1.2
2.1.2 NTP NTP 342.052:20342.052:2000 00 Cobre Cobre y y aleaciones aleaciones de de cobre. cobre. Tubos Tubos redondosredondos de cobre sin costura, para gas y agua
de cobre sin costura, para gas y agua
2.2
2.2 Normas Normas Técnicas Técnicas InternacionaInternacionalesles
2.2.1
2.2.1 ISO ISO 7-1:1994 7-1:1994 Pipe Pipe threads threads where where pressure pressure – – tight tight joints joints areare made on the threads. Part 1: dimensions, made on the threads. Part 1: dimensions, tolerances and
tolerances and designationdesignation
2.2.2
2.2.2 ISO ISO 22811:2000 22811:2000 Pipe Pipe threads threads where where pressure pressure – – tight tight joints joints areare not made on the threads. Part 1: dimensions, not made on the threads. Part 1: dimensions, tolerances and
tolerances and designationdesignation
2.2.3
2.2.3 ISO ISO 14313:1999 14313:1999 Petroleum Petroleum and and natural natural gas gas industries industries – – pipelinepipeline transportation system – pipe line valve
transportation system – pipe line valve
2.2.4
2.2.4 ISO ISO 4437:1997 4437:1997 Buried Buried PE PE pipes pipes for for the the supply supply of of gaseousgaseous fuels – metric series
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 3 3 de de 3838
2.3.2
2.3.2 CEN CEN EN EN 12186:2000 12186:2000 Gas Gas Supply Supply Systems Systems – – Gas Gas PressurePressure Regulating Stations for Transmission and Regulating Stations for Transmission and Distribution – Functional Requirements
Distribution – Functional Requirements
2.3.3
2.3.3 CEN CEN EN EN 1776:1998 1776:1998 Gas Gas Supply Supply Systems Systems – – Natural Natural Gas Gas MeasurinMeasuringg Stations – Functional
Stations – Functional RequirementsRequirements 2.3.4
2.3.4 CEN CEN EN EN 1359:1998 1359:1998 Gas Gas Meters Meters – – Diaphragm Diaphragm gas gas metersmeters
2.3.5
2.3.5 CEN CEN EN EN 12480:2002 12480:2002 Gas Gas meters meters – – rotary rotary displacement displacement gas gas metersmeters
2.3.6
2.3.6 CEN CEN EN EN 334:1999 334:1999 Gas Gas Pressure Pressure Regulators Regulators for for inlet inlet pressures pressures upup to 100 bar
to 100 bar
2.4
2.4 Normas Normas Técnicas Técnicas de de AsociaciónAsociación
2.4.1
2.4.1 ASTM ASTM A539:1999 A539:1999 Standard Standard specification specification for for electric electric resistance- resistance-welded coiled steel tubing for gas and fuel oil welded coiled steel tubing for gas and fuel oil lines
lines
2.4.2
2.4.2 ASTM ASTM A254:1997 A254:1997 Standard Standard specification specification for for cooper cooper brazed brazed steelsteel tubing
tubing
2.4.3
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 4 4 de de 3838
2.4.6
2.4.6 ASTM ASTM B B 88:1996 88:1996 Specification Specification for for Seamless Seamless Copper Copper Water Water TubeTube
2.4.7
2.4.7 ASTM ASTM B B 280:2002 280:2002 Specification Specification for for seamless seamless cooper cooper tube tube for for airair conditioning and refrigeration field services conditioning and refrigeration field services
2.4.8
2.4.8 ASTM ASTM A A 193M:2003 193M:2003 Alloy-steel Alloy-steel and and stainless stainless steel steel bolting bolting materialsmaterials for high-temperature service
for high-temperature service
2.4.9
2.4.9 ASTM ASTM A A 194M:2003 194M:2003 Carbon Carbon and and alloy alloy steel steel nuts nuts for for bolts bolts for for high- high- pressure and
pressure and high temperahigh temperature serviceture service
2.4.10
2.4.10 ASTM ASTM D D 2513:2003 2513:2003 Thermoplastic Thermoplastic gas gas pressure pressure pipe, pipe, tubing tubing andand fittings
fittings
2.4.11
2.4.11 ASTM ASTM D D 2774:2001 2774:2001 Standard Standard practice practice for for underground underground installationinstallation of thermoplastic pressure piping
of thermoplastic pressure piping
2.4.12
2.4.12 ANSI/AGA ANSI/AGA LC1:2001 LC1:2001 Interior Interior Fuel Fuel Gas Gas Piping Piping System System UsingUsing Corrugated Stainles steel Tubing
Corrugated Stainles steel Tubing
2.4.13
2.4.13 ANSI ANSI B16.18: B16.18: Cast copper Cast copper alloy alloy solder solder joint joint pressure pressure fittingsfittings
2.4.14
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 5 5 de de 3838
2.4.18
2.4.18 ANSI ANSI B16.18:2000 B16.18:2000 Cast Cast cooper cooper alloy alloy soldier soldier joint joint pressure pressure fittingsfittings
2.4.19
2.4.19 ASME ASME B B 16.4:1998 16.4:1998 Cast Cast iron iron threaded threaded fittingfitting
2.4.20
2.4.20 ANSI-MSSSP58 ANSI-MSSSP58 Pipe Pipe hangers hangers and and supports-materials, supports-materials, designdesign and manufacturer
and manufacturer
2.4.21
2.4.21 ANSI ANSI B B 109:2000 109:2000 Diaphragm-tyDiaphragm-type pe Gas Gas Displacement Displacement Meters.Meters. Partes 1 y 2
Partes 1 y 2
2.4.22
2.4.22 ANSI ANSI 109.3:2000 109.3:2000 Rotary-type Rotary-type Gas Gas DisplacemeDisplacement nt MetersMeters
2.4.23
2.4.23 ANSI ANSI B B 109.4:1998 109.4:1998 Self-operated Self-operated diaphragm-tydiaphragm-type pe natural natural gasgas service regulators
service regulators 2.4.24
2.4.24 API API 5L:2002 5L:2002 Line Line PipePipe
2.4.25
2.4.25 API API 6D:2002 6D:2002 Pipeline valvesPipeline valves
2.5
2.5 Normas Normas Técnicas Técnicas NacionalesNacionales
2.5.1
2.5.1 CEN CEN UNE-EN UNE-EN 746-1:1997 746-1:1997 Equipos Equipos de de tratamiento tratamiento térmico térmico industrial:industrial: Parte 1: Requisitos comunes de seguridad para Parte 1: Requisitos comunes de seguridad para
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 6 6 de de 3838
2.5.4
2.5.4 CEN CEN UNE-EN UNE-EN 12007-2:2000 12007-2:2000 PolyethyPolyethylene lene pipe pipe InstallationsInstallations
2.5.5
2.5.5 DIN DIN 30670:1991 30670:1991 Polyethylene Polyethylene coatings coatings for for steel steel pipes pipes andand fitting
fitting
2.5.6
2.5.6 MSS MSS SP-25 SP-25 Standard Standard marking marking system system for for valves, valves, fittings,fittings, flanges and unions
flanges and unions
3.
3. CAMPO CAMPO DE DE APLICACIÓNAPLICACIÓN
Esta Norma Técnica Peruana se aplica únicamente a las instalaciones industriales donde el Esta Norma Técnica Peruana se aplica únicamente a las instalaciones industriales donde el gas natural seco deberá ser usado como combustible y tiene como alcance el sistema de gas natural seco deberá ser usado como combustible y tiene como alcance el sistema de tuberías con presiones
tuberías con presiones hasta hasta 400 kPa incluido 400 kPa incluido (4 bar incluido), que van (4 bar incluido), que van desde la salida dedesde la salida de la Estación de Regulación de Presión y Medición Primaria (ERPMP) hasta los puntos de la Estación de Regulación de Presión y Medición Primaria (ERPMP) hasta los puntos de conexión de los equipos de consumo.
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 7 7 de de 3838
4.4
4.4 aprobado:aprobado: Aceptable por la Aceptable por la entidad competente.entidad competente.
4.5
4.5 entidad entidad competentecompetente:: Es el ente gubernamental responsable de verificar laEs el ente gubernamental responsable de verificar la correcta aplicación de cualquier parte de esta NTP o el funcionario o la agencia designada correcta aplicación de cualquier parte de esta NTP o el funcionario o la agencia designada por esta entidad
por esta entidad para ejercitar tal funpara ejercitar tal función.ción.
4.6
4.6 certificado:certificado: Se aplica este término para cualquier accesorio, componente,Se aplica este término para cualquier accesorio, componente, equipo de consumo, o para la instrucción de instalación del fabricante, el cual es equipo de consumo, o para la instrucción de instalación del fabricante, el cual es investigado e identificado por una organización designada para comprobar que cumple con investigado e identificado por una organización designada para comprobar que cumple con los estándares reconocidos o con los requisitos aceptados para la prueba.
los estándares reconocidos o con los requisitos aceptados para la prueba.
La certificación implica pruebas y es realizada por una organización reconocida encargada La certificación implica pruebas y es realizada por una organización reconocida encargada de dicha prueba. Esta es realizada de acuerdo con estándares reconocidos, o con los de dicha prueba. Esta es realizada de acuerdo con estándares reconocidos, o con los requisitos de construcción y desempeño. La certificación es reconocida generalmente por requisitos de construcción y desempeño. La certificación es reconocida generalmente por un sello de certificación o
un sello de certificación o una etiqueta.una etiqueta.
4.7
4.7 combustión:combustión: Proceso químico de oxidación rápida entre un combustible yProceso químico de oxidación rápida entre un combustible y un comburente que produce la generación de energía térmica y luminosa, acompañada por un comburente que produce la generación de energía térmica y luminosa, acompañada por
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 8 8 de de 3838
4.12
4.12 estación de regulación de presión y medición primaria (ERPMP):estación de regulación de presión y medición primaria (ERPMP):
Conjunto de elementos instalados con el propósito de reducir y regular automáticamente la Conjunto de elementos instalados con el propósito de reducir y regular automáticamente la presión
presión del del fluido fluido aguas aguas abajo abajo del del punto punto de de entrega entrega y y medir medir los los volúmenes volúmenes de de gasgas consumidos. Asimismo, asegura que la presión no sobrepase de un límite prefijado ante consumidos. Asimismo, asegura que la presión no sobrepase de un límite prefijado ante fallas eventuales.
fallas eventuales.
4.13
4.13 estación de regulación de presión secundaria (subestación):estación de regulación de presión secundaria (subestación): Conjunto deConjunto de elementos instalados con el propósito de reducir y regular automáticamente la presión del elementos instalados con el propósito de reducir y regular automáticamente la presión del fluido aguas a abajo de la Estación de Regulación de Presión y Medición Primaria. Su fluido aguas a abajo de la Estación de Regulación de Presión y Medición Primaria. Su utilización se requiere cuando la presión de trabajo del equipo de consumo difiere de la utilización se requiere cuando la presión de trabajo del equipo de consumo difiere de la presión de la ERP
presión de la ERPMP regulada y MP regulada y asignada.asignada.
4.14
4.14 empresa instaladora de gas:empresa instaladora de gas: Persona natural o jurídica debidamentePersona natural o jurídica debidamente calificada y registrada ante la entidad competente para poder ejecutar, reparar o modificar calificada y registrada ante la entidad competente para poder ejecutar, reparar o modificar instalaciones internas de gas natural seco, y cuyo representante es una persona instalaciones internas de gas natural seco, y cuyo representante es una persona experimentada o entrenada, o ambos en tal trabajo y ha cumplido con los requisitos de la experimentada o entrenada, o ambos en tal trabajo y ha cumplido con los requisitos de la entidad competente.
entidad competente.
4.15
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 9 9 de de 3838
4.21
4.21 ramal (tubería lateral):ramal (tubería lateral): Es la parte de un sistema de tuberías que conduceEs la parte de un sistema de tuberías que conduce gas natural seco desde la tubería principal de la instalación interna a un equipo de gas natural seco desde la tubería principal de la instalación interna a un equipo de consumo.
consumo.
4.22
4.22 regulador de presiónregulador de presión: Dispositivo que reduce la presión del fluido que: Dispositivo que reduce la presión del fluido que recibe y la mantiene constante, independientemente de los caudales que permite pasar y de recibe y la mantiene constante, independientemente de los caudales que permite pasar y de la variación de la presión aguas arriba del mismo, dentro de los rangos admisibles. La la variación de la presión aguas arriba del mismo, dentro de los rangos admisibles. La regulación puede efectuarse en una o varias etapas.
regulación puede efectuarse en una o varias etapas.
4.23
4.23 revestimientorevestimiento: Sistema de protección de superficies metálicas contra la: Sistema de protección de superficies metálicas contra la corrosión mediante el sellado de la
corrosión mediante el sellado de la superficie.superficie.
4.24
4.24 SDR:SDR: Relación entre el diámetro nominal externo de una tubería de Relación entre el diámetro nominal externo de una tubería de polietileno y s
polietileno y su espesor nou espesor nominal de paredminal de pared
4.25
4.25 separador/filtroseparador/filtro: Conjunto de elementos prefabricados que responden a un: Conjunto de elementos prefabricados que responden a un proyecto particular y que se destinan a
proyecto particular y que se destinan a retener partículas sólidas y/o líquidas contenidas enretener partículas sólidas y/o líquidas contenidas en el gas natural seco.
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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 10 10 de de 3838
4.30
4.30 válvula de servicio:válvula de servicio: Es una válvula de cierre general del suministro del gasEs una válvula de cierre general del suministro del gas natural seco, instalada fuera del predio del usuario final, y ubicada en la línea de servicio natural seco, instalada fuera del predio del usuario final, y ubicada en la línea de servicio de la Distribuidora. La válvula de servicio constituye el punto de entrega del gas del de la Distribuidora. La válvula de servicio constituye el punto de entrega del gas del Distribuidor al usuario industrial.
Distribuidor al usuario industrial.
4.31
4.31 válvula de seguridad de cierre rápido:válvula de seguridad de cierre rápido: Una válvula que cortaUna válvula que corta automáticamente el suministro de gas natural seco en el
automáticamente el suministro de gas natural seco en el sistema de tuberías.sistema de tuberías.
4.32
4.32 válvula unidireccional (back check):válvula unidireccional (back check): Una válvula que está normalmente Una válvula que está normalmente cerrada y permite el flujo en
cerrada y permite el flujo en sólo una dirección.sólo una dirección.
5.
5. SELECCIÓN SELECCIÓN DEL DEL MATERIAL MATERIAL DEL DEL SISTEMA SISTEMA DE DE TUBERÍASTUBERÍAS
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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NORMA
NORMA TÉCNTÉCNICA ICA NTP 1NTP 111.011.01010 PERUANA
PERUANA 12 12 de de 3838
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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PERUANA 14 14 de de 3838
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 9.1
9.1 Accesorios Accesorios y y bridas bridas para para tuberías tuberías de de aceroacero
9.1.1
9.1.1 Todos los accesorios roscados deberán tener rosca cónica conforme a lasTodos los accesorios roscados deberán tener rosca cónica conforme a las normas ISO 7.1, ISO 228.1, ANSI /
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PERUANA 15 15 de de 3838
9.4
9.4 Los accesorios en su totalidad deberán ser aprobados para su uso con gasLos accesorios en su totalidad deberán ser aprobados para su uso con gas natural seco.
natural seco.
10.
10. ESPECIFICAESPECIFICACIÓN CIÓN TÉCNICA TÉCNICA DE DE LAS LAS VÁLVULASVÁLVULAS 10.1
10.1 Válvula Válvula de de cierre cierre manualmanual
10.1.1
10.1.1 Las válvulas deberán ser aprobadas para su uso con gas. La tecnología y losLas válvulas deberán ser aprobadas para su uso con gas. La tecnología y los materiales de las válvulas deberán estar de acuerdo a la presión y condiciones de trabajo. materiales de las válvulas deberán estar de acuerdo a la presión y condiciones de trabajo.
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12.
12. EQUIPOS EQUIPOS DE DE REGULACIÓN REGULACIÓN Y Y MEDICIÓNMEDICIÓN
12.1
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12.4.4
12.4.4 Los Los medidores medidores no no deberán deberán ser ser ubicados ubicados donde donde puedan puedan estar estar expuestos expuestos aa daños físicos. Los medidores serán protegidos adecuadamente contra la intemperie, las daños físicos. Los medidores serán protegidos adecuadamente contra la intemperie, las salpicaduras, la humedad, las altas temperaturas, fuentes de ignición, tráfico vehicular etc. salpicaduras, la humedad, las altas temperaturas, fuentes de ignición, tráfico vehicular etc.
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13.3
13.3 Para las instalaciones internas industriales, se precisan las siguientesPara las instalaciones internas industriales, se precisan las siguientes válvulas adicionales:
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