G.M. International Safety Inc.

17453 Village Green Drive
Houston,  TX  77040

United States
http://www.gminternational.com
  • Booth: 5344

G.M. International is a world leading manufacturer of Intrinsically Safe Equipment and SIL rated Interfaces such as: SIL 3 EX Barriers / Isolators; SIL 3 Rated Satey Relays with or without Line Monitoring; DI & DO Modules for NE or ND Load with Line Monitoring Detection; SIL 3 Rated Power Supplies; Visit us to get your free copy of latest SIL Book.


 Press Releases

  • In case of an internal failure, functional safety describes the behavior of a safety device. The main target is reaching a safe state.

    Safety Relays are devices that implement safety functions. In the event of a hazard, a safety relay will work to reduce the risk within an acceptable level. When an error occurs, the safety relay will initiate a safe and reliable response. Each safety relay monitors a specific function. By connecting it to other safety relays, it is possible to achieve a total monitoring of a machine or plant. Safety relays are a simple and efficient way to meet existing safety standards, resulting in safe operations for the personnel and the equipment as well as a long service life. Risk reduction should be a priority for any business, in order to protect the employees and reduce the risk of costly accidents or equipment replacement. Generally, if a risk can be reduced, then it should be.

    Some of the functions that safety relays include:

    •           Stopping a movement in a controlled and safe manner

    •           Monitoring the position of movable guards

    •           Interrupting a closing movement during access

    •           Emergency off/stop

    Safety relays are simple to operate and have a clear structure. The use of safety relays has become widespread due to their compact design, high reliability, and most importantly they meet all the required standards. They have become an integral component of any new plant or machine where safety functions are necessary. A standard relay can’t be used in a Safety Instrumented Function (SIF). For this reason, whenever it is necessary to use a relay complying with IEC 61508 and the relevant industry standard (for example 61511), we must refer to a safety relay.

    SIF refers to equipment designed to prevent or mitigate the risks of a specific hazard. It detects the imminence of an incident, decides to take a specific action and acts to bring the process back to a safe state.

    A SIL (Safety Integrity Level) certified relay (Safety Relay) has a known and guaranteed ability to perform a given Safety Function and reach a specific safe state on demand (i.e. open a relief valve or activate a Fire Extinguishing System). The typical cases of application of a SIL certified relays are represented by a controller that can’t meet the power requirement (V or A), or when the multiplication of the contacts is required, or the controller safety function must be inverted.

    SIL (Safety Integrity Level) Certified Relays are used for critical loops where careful consideration should be given to Line and Load Monitoring. In applications, such as F&G systems, line and load monitoring are fundamental, and Smart Relays become a valuable tool. Smart Relays are devices that implement the load and line diagnostics functions to the safety functions of a safety relay.

    The SIL certified relays are not used exclusively in Oil & Gas or Petrochemical industries, they are also a must in many other industries like railways, cars and lift, power distribution and anytime a failure of the relay can cause a serious accident.

    GM International designs, engineers and manufactures a complete range of Intrinsically Safe and SIL Certified relays. Thanks to specific contact arrangement, GM International relay modules maintain higher level of safety while improving process availability (a single fault is not enough for a spurious trip of the load).

    The SIL certified relays are not used exclusively in Oil & Gas or Petrochemical industries, they are also a must in many other industries like railways, cars and lift, power distribution and anytime a failure of the relay can cause a serious accident.

    In conclusion, you should never consider safety and availability mutually exclusive. Choosing the right SIS can ensure that your personnel and your plant are perfectly safe without you having to suffer any economic loss.

    About GM International

    GM International designs, engineers and manufactures a full range of intrinsically safe devices that meet the highest quality requirements, ensuring the strictest production standards. Founded in 1993, its core Management experience remarkably exceeds over 40 years of qualified activity in hazardous locations and industrial electronics. GM International products - used in automation packages and installed in plants all over the world - have been certified from the most credited Notified Bodies in the world.

    For more information, visit the company’s website at www.gminternational.com and follow us on LinkedIn, Facebook and Youtube.

    For more information please contact:

    Anna Maggi

    anna.maggi@gminternational.com

    Tel.: +39 039 2325 038

    Maria Cristina Petrincola

    mariacristina.petrincola@gminternational.com

    Tel.: +39 039 2325 038

  • A specified certification guarantees that certain products, professionals or organizations have specified characteristics and meet specified requirements. GM International designs, engineers and manufactures a complete range of Intrinsically Safe and SIL 3 certified devices that meet the stringest quality requirements, ensuring the highest production standard in intrinsically safe applications.

    Nowadays, certification is a fundamental aspect of every industry, especially those dealing with heavy regulatory corpus and having to face safety issues. Achieving safety is a fundamental process for every operation. In fact, under the current regulations, organizations and their managers and owners are responsible for the safety of employees, citizens and environment and must thoroughly prevent risks. Choosing a specialized partner, rather than facing the issue on their own, is the best way for companies to guarantee that plants, equipment and processes are safe. The point here is being sure that the result of the partnership meets the initial expectations and that the performances of the systems put in place to address the safety issues guarantee risk-free functioning. The only guarantee that such objective is attained is certification.

    The main certification deriving from the definitions and requirements of IEC 61508 is that of the Safety Integrity Level (SIL), guaranteeing that specified levels of risk reduction are achieved by a Safety Instrumented Function (SIF). The use of SIL certified hardware and software is the first step towards achieving safety. Furthermore, safety systems must be certified in relation to operating conditions as temperature, pressure, etc..., and organizations must meet quality standards, as the ISO ones, certifying that their processes and systems guarantee the delivery of defect-free products.

    At GM International, we design intrinsically safe instruments and SIL instruments and SIL certified devices in order to prevent accidents and understand, manage and reduce risks for people and environment. GM International products have been granted IS certificates from the most credited Notified Bodies in the world. Certificates are available for Atex (Europe), IECEx (International), UL/FM (USA and Canada), EAC-EX (Russia CTU and Ukraine), NEPSI (China) PESO (India), TIIS (Japan), INMETRO (Brazil). Then, GM International offers a wide range of products that have been proved to comply with the most severe quality and safety requirements. IEC61508 and IEC61511 standards represent a milestone in the progress of industry in the achievements of highest levels of safety through the entire instrumented system lifecycle. The majority of GM International products are SIL certified as well as the design, manufacturing and admistrative facilities (FSM). In conclusion, to choose a certified partner is the only option available to those willing to face safety issues with the objective of resolving them and achieving a quantified and acceptable level of risk. Certification is the heart of modern industries, and safety strongly depends on it.

    About GM International

    GM International designs, engineers and manufactures a full range of intrinsically safe devices that meet the highest quality requirements, ensuring the strictest production standards. Founded in 1993, its core Management experience remarkably exceeds over 40 years of qualified activity in hazardous locations and industrial electronics. GM International products - used in automation packages and installed in plants all over the world - have been certified from the most credited Notified Bodies in the world.

    For more information, visit the company’s website at www.gminternational.com and follow us on LinkedIn, Facebook and Youtube.

    # # # #

    For more information please contact:

    Anna Maggi

    anna.maggi@gminternational.com

    Tel.: +39 039 2325 038

    Maria Cristina Petrincola

    mariacristina.petrincola@gminternational.com

    Tel.: +39 039 2325 038

  • The Safety Requirement Specification or SRS is a crucial and critical element to achieve Functional Safety.

    All instruments, including intrinsically safe instrumentation, that are used in Safety Instrumented System (SIS) (typically a combination of process sensors, interfaces, logic solver and final elements) are subject to very strict rules and are also regulated by IEC/EN 61508/61511 standards. These standards aim to define and reduce the inherent risk with the implementation of Functional Safety: the aspects of the overall Safety and Security of a system that depend on the proper functioning of the equipment in response to any input.

    The aforementioned standards provide a series of stages, and related documentation; the so-called Safety Lifecycle. Starting from the Hazard and Risk Analysis, considering other Layers of Protection leading to the definition of additional Risk Reduction and requirements for a Safety Instrumented system; from their design and realization to their installation, commissioning and validation; from the operations and maintenance, modification to the final decommissioning of the SIS.

    All those steps are normative requirements for complying with the IEC 61511 standard and need to be supported with the following documentation:

    • The results of the Hazard and Risk Analysis, including the related assumptions;
    • The equipment & instrumentation used for the SIF together with safety integrity and functionality requirements;
    • The modification procedure often referred to as MOC (Management Of Change);
    • The Safety manuals;
    • Design, Installation and commissioning, Test, Verification and Validation Plan (with reference to integrity, functionality, HW and SW requirements);
    • Application Program description, logbook, reference documents and details;
    • Proof testing and inspection procedures including the proof test coverage requirements;
    • Failure records of the field instruments used, including analysis of the Random, Common Cause and Systematic failures;
    • Functional Safety Management procedure describing responsibilities and activities for maintaining Functional Safety of the Safety Instrumented System;
    • Functional Safety Assessments procedure and reports

    There are 3 key documents needed for a successful and correct functioning of the Safety Instrumented System in order to perform and achieve the necessary risk reduction:

    • The Functional Safety Management and Safety plan;
    • The Verification and Validation plan;
    • The Safety Requirements Specification (SRS).

    A detailed description on SIS SRS documentation - with some practical examples - is available in G.M. International SIL manual – Safety Instrumented System, 4th edition - chapter 8. GM International SIL Manual has gained strong popularity with over 50.000 copies delivered.

    Moreover, GM International is a course promoter of the TÜV Rheinland Functional Safety Program for Safety Instrumented Systems (SIS) trainings for engineering companies, end user and system integrators on topics such as Intrinsic Safety (IS) and Safety Instrumented System (SIS).

    Visit our website for available worldwide dates: https://www.gminternational.com/?p=training

    About GM International

    GM International designs, engineers and manufactures a full range of intrinsically safe devices that meet the highest quality requirements, ensuring the strictest production standards. Founded in 1993, its core Management experience remarkably exceeds over 40 years of qualified activity in hazardous locations and industrial electronics. GM International products - used in automation packages and installed in plants all over the world - have been certified from the most credited Notified Bodies in the world.

    For more information, visit the company’s website at www.gminternational.com and follow us on LinkedIn, Facebook and Youtube.

    # # # #

    For more information please contact:

    Anna Maggi

    anna.maggi@gminternational.com

    Tel.: +39 039 2325 038

    Maria Cristina Petrincola

    mariacristina.petrincola@gminternational.com

    Tel.: +39 039 2325 038


 Products

  • Intrinsically Safe Isolator: D5231E
    The Switch/Proximity Detector Repeater type D5231E is a unit with eight independent channels suitable for applications requiring SIL 2 level (according to IEC 61511) in safety related systems for high risk industries....

  • • SIL 2 according to IEC 61511 for Tproof = 3 / 10 yrs (≤10% / >10 % of total SIF), SFF 73.90%, PFDavg (1 year) 2.96 E-04.
    • 8 fully independent channels
    • Input from Zone 0 (Zone 20) / Division 1, Installation in Zone 2/Division 2.
    • NO/NC switch/proximity Detector Input, NO/NC solid-state output relay .
    • Field open and short circuit detection.
    • High Accuracy, μP controlled A/D converter.
    • Three port isolation, Input/Output/Supply.
    • Modbus RTU RS-485 Output.
    • EMC Compatibility to EN61000-6-2, EN61000-6-4, EN61326-1, EN61326-3-1 for safety system.
    • Fully programmable operating parameters.
    • Any input can be assigned to any number of outputs. Logical output functions available.
    • ATEX, IECEx, FM, FMC, INMETRO, EAC-EX, UKR TR n. 898, NEPSI, TÜV Certifications.
    • Type Approval Certificate DNV and KR for maritime applications.
    • High Density, eight channels per unit.
    • Simplified installation using standard DIN-Rail and plug-in terminal blocks, with or without power Bus, or customized Termination Boards.
    • 250 Vrms (Um) max. voltage allowed to the instruments associated with the barrier.
  • SIL 3 Safety Relay: D5294S
    The D5294S is a relay module suitable for the switching of safety related circuits, up to SIL 3 level according to IEC 61508:2010 Ed. 2 for high risk industries. It provides isolation between input and output contacts....

  • • SIL 3 according to IEC 61508:2010 Ed. 2 for Tproof = 13 / 20 yrs (≤10% / >10 % of total SIF) for NE Load, with PFDavg (1 year) 7.55 E-06, SFF 99.29%
    • SIL 3 according to IEC 61508:2010 Ed. 2 for Tproof = 6 / 20 yrs (≤10% / >10 % of total SIF) for F&G/ND Load, with PFDavg (1 year) 1.49 E-05, SFF 97.52%
    • SIL 2 according to IEC 61511 for Tproof = 1 / 5 yrs (≤10% / >10 % of total SIF) for diagnostic with fault relay NO contact, with PFDavg (1 year) 5.86 E-04, SFF 70.54%
    • SIL 2 according to IEC 61511 for Tproof = 2 / 10 yrs (≤10% / >10 % of total SIF) for diagnostic with RS485 Modbus out, with PFDavg(1 year) 3.85 E-04, SFF 73.82%
    • Systematic capability SIL 3.
    • Installation in Zone 2 / Division 2.
    • Compatible with DCS/PLC pulse testing.
    • Internal relay coil short circuit detection.
    • Line and Load short/open circuit detection.
    • The fault in the field is directly mirrored to the PLC DO.
    • Solenoid resistance measurement even in presence of serial connected diodes (patented resistance measuring technique).
    • RMS voltage (before and after load energization) and load current measurement.
    • Automatic acquisition of voltage, current and load resistance values.
    • Earth leakage detection on both ac phases in de-energized load condition.
    • 5 A high availability SIL 3 contacts for NE or F&G/ND load.
    • 6 A inrush current at 24 Vdc / 250 Vac.
    • Input/Output/Supply isolation.
    • EMC Compatibility to EN61000-6-2, EN61000-6-4, EN61326-1, EN61326-3-1 for safety system.
    • ATEX, IECEx, UL & C-UL, FM & FM-C, INMETRO, EAC-EX, UKR TR n. 898, NEPSI, TÜV Certifications.
    • TÜV Functional Safety Certification.
    • Type Approval Certificate DNV and KR for maritime applications.
    • Simplified installation using standard DIN-Rail and plug-in terminal blocks, with or without Power Bus, or customized Termination Boards.
  • Power Supply: PSS1250
    The Power Supply System type PSS1250 is an anodized aluminum 19” Rack unit (4U high) suitable to accept up to 6 plug-in Power Supply Modules type PSM1250 and 1 Overview module for diagnostic functions. Each module provides 24Vdc, 50 A output....

  • • SIL 3 for NE Load according IEC 61508:2010, with single PSM1250 module or more PSM1250 modules in redundant configuration (see SM0219 for more information).
    • SIL 1 for ND Load according to IEC 1508:2010, with single PSM1250 module (see ISM0219 for more information).
    • SIL 2 for ND Load according IEC 61508:2010, with more PSM1250 modules in redundant configuration (see ISM0219 for more information).
    • Systematic capability SIL 3.
    • 2 universal AC Input Lines, 100 to 264 Vac (48 to 62 Hz).
    • Power factor correction.
    • Installation in Zone 2 / Div.2 hazardous locations with hot swappable modules.
    • EMC Compatibility to EN61000-6-2, EN61000-6-4.
    • ATEX, IECEx Certifications.
    • TÜV Certifications.
    • TÜV Functional Safety Certification.
    • Type Approval Certificate DNV for marine applications (pending).
    • Highly regulated output of 24 Vdc, 50 A, for PSM1250 module.
    • Under and over voltage alarm monitoring.
    • 3 over voltage redundant protections.
    • Redundant parallel connections with load sharing.
    • Reduces Power dissipation (in parallel/redundant configuration) by replacing a Schottky diode with Mosfet Active Ideal Diode.
    • 89% efficiency @230 Vac input and 24 Vdc output with full load.
    • Fan speed control depending on ambient temperature and output power.
    • High load fuse breaking capability without interrupting operations.
    • 19” or 9” or 7” Rack unit, 4 U high,anodized aluminium, durable metal enclosure.
    • Tropicalization for electronic components.
    • Modbus RTU RS-485 diagnostic output (only for 19” or 9” rack units).