Applications · Nuclear
Temporary power for refuel and uprate outages
A refuel outage is measured in days that each cost real money, and the work happens where permanent power was never installed. Porta-Safe units put GFCI-protected 120 V and welding power at the job, built to the plant's specification and documented the way a nuclear QA department expects.

What the environment adds
- Documentation
- Exact specification agreed to before the build; the documentation package issued with the unit is set to each customer's requirements.
- Ruggedness
- Heavy-gauge welded frames and enclosures for units that are craned, forked and moved through containment access every outage.
- GFCI everywhere
- Every receptacle a person plugs a tool or a light into is ground-fault protected.
- Repeatability
- Once a unit is specified for a plant, the next one is the same drawing — fleets stay consistent across outages.
Documents
- Porta-Safe Nuclear UnitsPDF · 4.4 MBTemporary power and power distribution units for refuel and uprate outages, and what the nuclear package includes.
- Porta-Safe TPU'sPDF · 5.3 MBThe one-page overview: what a Porta-Safe unit is, configurations, and the standards designs are built to.
- Porta-Safe Cart Designer WorksheetPDF · 238 KBThe fillable specification form — input power, receptacles, enclosure and options. Fill it in online instead at /cart-designer/.

Built by the OEM
Porta-Safe is a division of JNT Technical Services, Inc., which also supplies the nuclear industry through its Torq N' Seal® tube plug line. The people who quote a unit are the people who build it, so a question about a receptacle standard or a frame dimension gets an answer, not a callback.