Emerson Process Management Rev AA manual SIL Capability, Systematic Integrity, Random Integrity

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Functional Safety Manual

IP101/FSM, Rev AA

January 2012

Horizontal Float Switch

SIL Capability

Systematic Integrity

Table 3.

Failure Rates for Level Switch

4-contact Versions – Types D and P

The Mobrey level switch has met manufacturer design process requirements of Safety Integrity Level 2 (SIL 2). These are intended to achieve sufficient integrity against systematic errors of design by the manufacturer.

A Safety Instrumented Function (SIF) designed with the Mobrey level switch must not be used at a SIL higher than the statement without “prior use” justification by the end-user, or verification of diverse technology in the design.

Random Integrity

The Mobrey level switch is classified as a type A device according to Table 2 of the standard IEC 61508-2. Therefore, based on an Safe Failure Fraction (SFF) of between 0% and 60%, a design can meet SIL 1 with Hardware Fault Tolerance (HFT) = 0 and SIL 2 with HFT = 1 when the level switch is used as a single component in a sensor subsystem.

Safety Parameters

The failure rates given here are valid for the useful lifetime of the product, as described in the section “Useful Lifetime” on page 12.

NOTE:

The FMEDA report is available from the Safety quick link at www.mobrey.com. In the right-hand panel, there are SIL documents including the FMEDA report.

 

Failure Rate (FIT) (1)

Failure Category

Maximum Detection

Minimum Detection

Fail Safe Detected

0

0

Fail Safe Undetected

87

89

Fail Dangerous Detected

0

0

Fail Dangerous Undetected

195

193

Residual

34

34

(1) FIT is the abbreviation for Failure In Time. One FIT is 1x10-9failure per hour.

Table 4. Failure Rates for Level Switch 6-contact Versions – Types D6, P6, H6, and B6

 

Failure Rate (FIT) (1)

Failure Category

Maximum Detection

Minimum Detection

Fail Safe Detected

0

0

Fail Safe Undetected

167

169

Fail Dangerous Detected

0

0

Fail Dangerous Undetected

275

273

Residual

34

34

(1) FIT is the abbreviation for Failure In Time. One FIT is 1x10-9failure per hour.

Table 5.

 

 

 

 

 

 

Failure Rates according to

 

 

 

 

 

 

Device

λSD(1)

λSU

λDD

λDU

SFF %

IEC 61508, 4-contact Versions –

 

 

 

 

 

 

Maximum Detection

0

87

0

195

30.9

Types D and P (FIT)

Minimum Detection

0

89

0

193

31.6

 

(1) FIT is the abbreviation for Failure In Time. One FIT is 1x10-9failure per hour.

Table 6.

 

 

 

 

 

 

Failure Rates according to

 

 

 

 

 

 

Device

λSD(1)

λSU

λDD

λDU

SFF %

IEC 61508, 6-contact Versions –

Types D6, P6, H6, and B6 (FIT)

Maximum Detection

0

167

0

275

37.8

 

Minimum Detection

0

169

0

273

38.3

(1) FIT is the abbreviation for Failure In Time. One FIT is 1x10-9failure per hour.

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Contents Mobrey Magnetic Level Switches Functional Safety ManualPage Contents Introduction Scope and Purpose of the Safety ManualSkill Level Requirement Terms, Abbreviations, And Acronyms Functional Safety Low demandDocuments Purpose of Documents Documentation and StandardsStandards Purpose of Standards Product Description Level Switch PurposeOperation Principle Ordering Information Cross-section of the Level SwitchContact B-B Pushrods Safety Function Environmental Limits Designing a Safety Function Using the Level SwitchApplication Limits Design Verification Systematic Integrity Safety ParametersSIL Capability Random IntegrityInstallation and Commissioning Operation and Maintenance Useful Life SpecificationsUseful Lifetime Proof Test Coverage Proposed PROOF-TEST ProcedureSuggested Proof-test StepLevel Switches Certified to IEC Typical Model Number S 01 DB / F84 Typical Model Number S 250 D a / F84Mobrey Level Solutions

Rev AA, M310/FSM specifications

Emerson Process Management's M310/FSM, Rev AA is a sophisticated control and monitoring system designed for industrial applications. This powerful platform integrates advanced functionality and cutting-edge technology to streamline operations, enhance process efficiency, and improve decision-making capabilities in various sectors, including oil and gas, chemicals, and manufacturing.

One of the main features of the M310/FSM is its modular architecture, which allows for great flexibility and scalability. This design enables users to expand the system as needed, accommodating both small and large operations. The versatility of the M310/FSM makes it suitable for myriad applications, from process automation to more complex control needs.

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Another notable characteristic of the M310/FSM is its user-friendly interface. The graphical user interface (GUI) simplifies navigation, allowing operators to quickly access relevant information and control functionalities. This ease of use reduces training time and helps operators make informed decisions rapidly, thus enhancing response times during critical processes.

In addition to its robust control and monitoring capabilities, the M310/FSM is equipped with advanced diagnostic features. These diagnostics enable proactive maintenance, allowing users to identify potential issues before they escalate into significant problems. By facilitating predictive maintenance strategies, the M310/FSM helps reduce downtime and associated costs.

The M310/FSM also prioritizes cybersecurity, integrating measures to protect sensitive data and prevent unauthorized access. With the growing importance of cybersecurity in industrial environments, Emerson Process Management has made it a critical facet of system design, ensuring that users can operate with confidence.

Furthermore, the M310/FSM supports various data analytics tools, enabling users to analyze historical and real-time data effectively. This capability enables better decision-making through insights that drive process optimization and continuous improvement initiatives.

In conclusion, Emerson Process Management's M310/FSM, Rev AA stands out as a robust solution designed to meet the diverse needs of modern industrial applications. With its modular design, extensive connectivity options, user-friendly interface, and advanced features, the M310/FSM represents a significant advancement in the field of process management and automation technology. This system empowers organizations to enhance operational efficiency, improve safety, and ensure reliable and responsive control of their processes.
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