Trapped-key interlocking utilizes locks and keys for sequential control of equipment and machinery to ensure safe operation. Trapped-key interlocks are widely used to ensure safe access to potentially live or dangerous plant or equipment in an industrial setting. A safe sequence of operations is enabled through transfer of keys that are either trapped or released in a predetermined order.
Trapped Key Interlocking System Products and Features
Trapped Key Interlocks (Skorpion Range) - Die-Cast and Stainless-Steel- Mirror polished die-cast metal or 316 grade stainless steel
- Robust with high mechanical integrity
- Comprehensive range
- Thousands of mechanical key codes
- Stainless steel is suitable for IP69K requirements
- Stainless steel is suitable for SIP/CIP cleaning
Mini Valve Interlocks - Die-Cast and Stainless Steel- Option when key free of passing or non-passing (open or closed valve).
- Five thread sizes (BSP) to cover most popular options.
- Compact design for ease of mounting.
- Stainless Steel is suitable for CIP and SIP cleaning processes and can be high pressure hosed with detergents at high temperatures.
What to Consider when Designing a Trapped Key System:
Stage 1 Isolation: The first stage of any trapped key system is to isolate the power or control circuit. This should STOP any hazardous processes.
Stage 2 Key Exchange: The second stage is exchange. The isolator key can be used to open 1 access lock at a time or, if there are multiple access locks, a key exchange can be used.
Stage 3 Access Control: Access locks prevent entry to the hazardous areas. Only when the correct coded key is presented, will entry be permitted.
Stage 4 Personnel Key: The personnel key is predominately used in full body access situations, allowing the user to operate safely inside the hazardous area.
IDEM Safety Product Overview CatalogTalk to one of our automation experts today at
(855) 737-4716, or fill out our
online form to learn more.
