What is double valve required?
- High temperature (200 F or more).
- High pressure (1,000 PSI or greater).
- All sea connected systems (except lines less than 1/2 inch NPS inboard of the backup valves)
- All hull penetrations below the maximum anticipated waterline (except mechanical and electrical penetrations designed for single closure (e.g., shaft or cable penetrations, etc.)
- Fluids with flash point below 200°F.
- Hazardous, toxic vapor (dry cleaning fluid, photo-chemical fluids and phosphate ester hydraulic fluid).
When is single valve authorized?
Liquid or gas systems not requiring two barrier protection per paragraph 6 and Table 1 of TUMS, at least one pressure barrier shall be established between the maintenance area and the system liquid or gas.
Out of Calibration vs. Out of commission?
- An orange label used to identify instruments that are out of calibration and will not accurately indicate parameters.
- A red label used to identify instruments that will not correctly indicate parameters because they are defective, or isolated from the system. This label indicates that the instrument cannot be relied on and must be repaired and recalibrated, or reconnected to the system, before use.
Our Tag out index is:
- SOMS TERMINAL
- ACTIVE LIRS
- ACTIVE TORS
- CLEARED LIRS
- CLEARED TORS
- RECORD OF AUDIT
HOW MANY TAG-OUT LOGS ARE THERE?
- Two tag out logs.
- One for Engineering and one for Combat