To ensure that the protection lasts for the lifetime of the equipment, system maintenance and testing should be performed regularly.

CENTERFORSECURITYPOLICY: Old threat with a new face

And to ensure that protection lasts over the lifetime of the equipment, maintenance and testing should be performed on a system regularly.

CENTERFORSECURITYPOLICY: Center For Security Policy

You will be responsible for the development and maintenance of methodical testing strategies and accompanying test documentation.

FORBES: Apple Hiring Digital Camera Expert For iPad Group

An emergency backup generator is only allowed to operate for 200 hours every year and only in the event of an emergency power failure or for routine testing and maintenance.

FORBES: Backup Generators Are the Bad and Ugly of Decentralized Energy

Since the April 20 explosions and fire, BP is carefully evaluating the subsea blow-out preventers used in all our drilling operations world-wide, including the testing and maintenance procedures of our drilling contractors using the devices.

WSJ: Tony Hayward: What BP Is Doing About the Gulf Gusher

The rest of it - the five watchtowers, concrete perimeter wall, 57 concrete 'kiosks' (which stored the nuclear warheads) and other testing and maintenance buildings - have deteriorated and the 'scheduled monument' has now been put on the at-risk register by English Heritage.

BBC: The battle to save England's heritage

Regulations that the government alleges Wilson violated would require approval for the design, development, production, manufacture, assembly, operation, repair, testing, maintenance or modification of firearms including blueprints, drawings and plans, or just about every aspect required to print a gun using a 3-D printer.

CNN: SHARE THIS

Among these have been many with the greatest experience in the design, manufacture, testing, analysis and maintenance of the Nation's deterrent stockpile.

CENTERFORSECURITYPOLICY: A credible nuclear deterrent

For most of the nuclear era, successive U.S. administrations of both political parties regarded periodic nuclear testing as essential to the maintenance of a safe, reliable and effective nuclear deterrent.

CENTERFORSECURITYPOLICY: Are we serious about deterrence?

Globally, the nonprofit group ASTM International (formerly the American Society for Testing and Materials) sets voluntary safety standards for the industry regarding design, manufacturing, maintenance and operations.

BBC: The human limits of roller coasters