ISA TR96.07.02-2021
Framework for defining service conditions and identifying associated risks and risk mitigation measures ISA-TR96.07.02-2021

Standard No.

ISA TR96.07.02-2021

Release Date

2021

Published By

Instrument Society of America (ISA)

Latest

ISA TR96.07.02-2021

Scope

This technical report presents a framework for describing the service conditions of actuators and their accessories (such as solenoid valves, limit and proximity switches, positioners, etc.). The document identifies common hazards (such as thermal stress, extreme pressures, chemical exposure, mechanical shock and vibration, etc.) and service conditions; identifies common methods for reducing the risk of each hazard (such as material selection, coating selection, etc.); and identifies common industry technical standards that may certify equipment as resistant to the hazard. This framework can be applied to: 　•Actuator design specifications • Mounting hardware required to secure the actuator to the valve • Accessories to monitor and adjust the actuator position Not included in this framework are recommendations for nuclear applications, which have detailed specifications requiring that each actuator design be certified for one or more environmental extremes (such as acceleration and vibration from seismic events, radiation exposure, immersion, and extreme temperatures). This technical report does not replace or override the user specifications for each application. The user should specify details for each application environment (including intrusion hazards, hazardous area classifications, certification requirements and other local conditions such as ambient temperature range, humidity, seismic requirements, etc.) and actuator performance (such as design type, safety factors, travel speed, failure location, override options, etc.), as well as any documentation requirements (such as material certifications, sizing calculations, etc.).

ISA TR96.07.02-2021 Referenced Document

• ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apparatus
• ASTM B571 Standard Practice for Qualitative Adhesion Testing of Metallic Coatings
• ASTM B845 Standard Guide for Mixed Flowing Gas (MFG) Tests for Electrical Contacts
• ASTM D1654 Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments
• ASTM D714 Standard Test Method for Evaluating Degree of Blistering of Paints
• ASTM G85 Standard Practice for Modified Salt Spray (Fog) Testing
• IEC 61508 Functional safety of electrical/electronic/programmable electronic safety-related systems – ALL PARTS together with a Commented version (see Functional Saf
• IEC 61511 Functional safety - Safety instrumented systems for the process industry sector - ALL PARTS
• ISO 10423 Petroleum and natural gas industries — Drilling and production equipment — Wellhead and tree equipment
• ISO 12490 Petroleum and natural gas industries - Mechanical integrity and sizing of actuators and mounting kits for pipeline valves
• ISO 12944 Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 9: Protective paint systems and laboratory performance test methods for offshore and related structures
• ISO 9227 Corrosion tests in artificial atmospheres — Salt spray tests — Amendment 1: Footnote of Warning

ISA TR96.07.02-2021 history

• 2021 ISA TR96.07.02-2021 Framework for defining service conditions and identifying associated risks and risk mitigation measures ISA-TR96.07.02-2021

Standard and Specification