G/TBT/N/MEX/460  
9 December  2019 
(19-8445) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  Spanish  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6.  
 
1. Notifying Member : MEXICO  
If applicable, name of local government involved (Articles 3.2 and 7.2) : Not 
applicable  
2. Agency responsible : Secretaría de Economía  (Ministry of the Economy)  
Name and address (including telephone and fax numbers, email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if differen t from above:  
Comité Consultivo Nacional de Normalización de la Secretaría de Economía , CCONNSE 
(National Advisory Committee on Standardization of the Ministry of the Economy), located 
at calle Pachuca número 189, piso 7, colonia Condesa, demarcación terri torial 
Cuauhtémoc, C.P. 06140, Ciudad de México ; Tel.: 52 29 9100, Ext. 13243 and 13238 ; 
Email: victor.torresv@economia.gob.mx  and cielo.beltran@economia.gob.mx  
3. Notified under Article 2.9.2 [X], 2.10.1 [ ], 5.6.2 [ ], 5.7.1 [ ], other:  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading . ICS numbers may be provided in addition, where applicable) : Pressure -
relief valves  
5. Title, number of pages and language(s) of the notified document : PROYECTO de 
Norma Oficial Mexicana PROY -NOM-093-SCFI-2018, Válvulas de relevo de presión 
(seguridad, segurid ad-alivio y alivio) operadas por resorte y piloto ; fabricadas de acero y 
bronce (cancelará a la NOM -093-SCFI-1994)  (Draft Mexican Official Standard PROY -NOM-
093-SCFI-2018, Spring - and pilot -operated pressure -relief valves (safety, safety -relief 
and relief) made of steel and brass (cancelling Mexican Official Standard NOM -093-SCFI-
1994) (111 pages, in Spanish)  
6. Description of content : Pressure -relief valves must comply with strict safety 
requirements in order to be considered highly reliable . To do so, they must comply with 
the relevant selection, design, material and manufacturing technical guidelines.  
The emphasis on safety in  this product ensures  its reliable operation in the system it 
protects, which results in continued productivity and the pro tection of facilities, human 
lives and the environment.  
These valves are the last safety device used in an emergency situation to prevent a 
disaster caused by excessive pressure.  
The notified draft Mexican Official Standard applies to the various steel and /or bronze 
pressure -relief valves manufactured and/or marketed in the Mexico, whether domestic or 
imported.  
It establishes the minimum safety requirements, test methods and conformity 
assessments for pressure -relief valves.  G/TBT/N/MEX/460  
- 2 - 
  7. Objective and rationale, including the nature of urgent problems where 
applicable : The notified draft Mexican Official Standard establishes the minimum safety 
requirements, test methods and conformity assessments for pressure -relief valves ; 
Prevention of deceptive pract ices and consumer protection ; Protection of the 
environment ; Reducing trade barriers and facilitating trade  
8. Relevant documents:  
• Mexican Official Standard NOM -008-SCFI-2002, Sistema general de unidades de 
medida , published in the Official Journal on 2 7 November 2 002; 
• Mexican Official Standard NOM -106-SCFI-2017, Características de Diseño y 
Condiciones de Uso de la Contraseña Oficial , published in the Official Journal on 
8 September 2 017; 
• Mexican Standard NMX -B-001-CANACERO -2009, Industria siderúrgica -Métodos 
de análisis químico para determinar la composición de aceros y hierros -Métodos 
de prueba  (cancelling Mexican Standard NMX -B-001-1988), published in the 
Official Journal on 1 9 February 2 010; 
• Mexican Standard NMX -B-136-1996-SCFI, Industria siderúrgica -Piezas vaciadas 
de aceros ferríticos y martensíticos para partes que trabajan a presión y bajas 
temperaturas -Especificaciones , published in the Official Journal on 3 March 1 997; 
• Mexican Standard NMX -B-172-CANACERO -2018, Industria Siderúrgica -Métodos 
de prueba mecánicos para productos de acero y hierro  (cancelling Mexican 
Standard NMX -B-172-CANACERO -2013), published in the Official Journal on 1 
November 2 018; 
• Mexican Standard NMX -B-140-1990, Piezas coladas de aceros austeníticos para 
servicio en altas tem peraturas , published in the Official Journal on 2 8 August 
1990; 
• Mexican Standard NMX -B-141-1990, Piezas coladas de acero aleado para partes 
que trabajan a presión y altas temperaturas , published in the Official Journal on 
28 August 1 990; 
• Mexican Standard N MX-B-356-1996-SCFI,  Industria siderúrgica -Piezas vaciadas 
de acero al carbono adecuadas para soldarse por fusión, para servicio en altas 
temperaturas -Especificaciones , published in the Official Journal on 4 March 1 997. 
9. Proposed date of adoption : To be determined  
Proposed date of entry into force : To be determined 180 calendar days after the date 
of publication in the Official Journal  
10. Final date for comments : 1 February 2 020 
11. Texts available from : National enquiry point [X] or address, teleph one and fax 
numbers and email and website addresses, if available, of other body:  
Secretaría de Economía  
Dirección General de Normas  (Directorate -General of Standards)  
Tel.: (+52) 55 5729 9100, Ext. 43244  
Fax: (+52) 55 5520 9715  
Website: http://www.economia.gob.mx/comunidad -negocios/normalizacion/catalogo -
mexicano -de-normas  
Email:  cesar.orozco@economia.gob.mx  
tania.fosado@economia.gob.mx  
jose.ramosr@economia.gob.mx  
http://www.dof.gob.mx/nota_detalle.php?codigo=5580548&fecha=02/12/2019  
https://members.wto.org/crnatt achments/2019/TBT/MEX/19_6979_00_s.pdf