No Metal Objects Sign

No Metal Objects Sign

A no metal objects sign is an ISO 7010 prohibition pictogram posted at the entrance to areas where loose metal tools, watches, keys or other ferromagnetic items must not be carried in, because a strong magnetic field could turn them into a projectile hazard or damage sensitive equipment. Displayed as a red circle with a diagonal bar over a black key or object symbol on a white background, this no metal objects sign gives crew and contractors a clear warning before they enter a zone where carrying loose metal items is unsafe.

Where a vessel or port facility operates equipment that produces a strong magnetic field, such as degaussing installations, large electric motors, generators, or certain testing and inspection rigs, unsecured ferromagnetic tools and objects can be pulled toward the field with considerable force, creating a genuine impact hazard for anyone standing nearby. A no metal objects sign addresses this specific risk by warning people to remove or secure loose metal items, such as spanners, screwdrivers, clipboards with metal clasps or wristwatches, before proceeding. This is a distinct concern from the risk to a person’s own implanted medical device, and this sign is the appropriate warning wherever the hazard is about loose tools and equipment rather than the health of the individual entering.

Protecting equipment as well as people

Beyond the immediate impact hazard, a no metal objects sign also protects sensitive shipboard instrumentation, navigation equipment and electronic systems that can be damaged or thrown out of calibration by nearby ferromagnetic materials. Fitting the sign at workshop entrances, near test benches and around high-field equipment helps crews maintain good housekeeping discipline and reduces the chance of an expensive equipment fault caused by a stray tool left too close to a magnetic source.

Good practice alongside a no metal objects sign includes providing a small tray or locker just outside the restricted area, so crew have somewhere obvious to leave keys, tools and other metal items before entering rather than having to backtrack once the sign has been noticed. This small addition to the workflow tends to improve compliance far more than the sign alone, since it removes the excuse of having nowhere convenient to store the item that should not be carried through.

Manufactured for demanding marine conditions

Safety Sign Hub produces this no metal objects sign in a fire-retardant, photoluminescent material built to withstand salt spray, humidity and the daily wear of a working vessel or terminal. The photoluminescent coating charges under normal lighting and glows in the dark, so the sign remains readable during a blackout or loss of main power. The pictogram follows the graphical conventions set out in the ISO 7010 standard, ensuring this no metal objects sign is understood consistently by multinational crews and visiting contractors. Order this sign using SKU PS0019 through your usual ship chandler or marine supplier for fast, accurate delivery.

As with any prohibition sign aimed at a specific technical hazard, a no metal objects sign works best when its placement matches where people actually stop and check their pockets or tool bags, rather than being fitted only on the compartment door itself. Positioning the sign a short distance before the entrance, near a designated storage point for tools and personal items, gives crew and contractors a natural opportunity to comply before reaching the higher-risk zone rather than discovering the restriction only once they are already at the threshold. Reviewing this arrangement periodically, alongside the equipment it protects, helps confirm that the sign and the storage point it references remain in the right place as the workshop or plant space is rearranged over time.

Browse our full range of prohibition signs for more IMO-compliant maritime safety signage.