The maintenance contract should also include provisions for emergency repairs and emergency repairs as well as planned maintenance work. At some point, each system will need to be operated on urgently; However, not all repairs are emergencies. The maintenance contract should define what an emergency repair is (no system can work) and what a non-emergency repair is (part of the system does not work, but its operation is not immediately critical). As a result of the gradual increase in the number of new cable systems, such a system of cable maintenance contracts has become insufficient due to the limited availability of cables for maintenance service. In the absence of a clear rule among these maintained cables, it was necessary for cable owners to cooperate around the world to reach a comprehensive agreement on the use of wiring between the maintenance authorities (MMA) and the vessel`s operator. The added benefit of sharing the costs of a cable vessel is the added benefit of sharing the costs of a cable vessel. When the original coaxial cable systems were introduced more than 40 years ago, each cable owner entrusted a cable operator with the individual maintenance of their own cable. The Yokohama area was one of the most important cable maintenance areas in the Asia-Pacific region. In 1997, it was reformed and developed with two ships on standby over the years, with the creation of the “Agreement on the Maintenance of Cable Systems of the Pacific Ocean in the Yokohama Area” and completed in 2001 by the Yokohama Zone ROV Agreement. The maintenance technician should be required to respond to emergency repairs within a reasonable time (usually four hours after the emergency is dered) and to return the system to service within a certain number of hours after arrival (usually within eight hours). It is important that either the system owner or maintenance service agency have critical spare parts for this purpose. For example, we recommend that you have programmed and ready to use a back-up workstation, simply by swapping it with a bad workstation. Much of the submarine systems are in addition to private or unionized maintenance contracts for the sea, where they have access to strategically located repair vessels in the area, for a quarterly fee called parking fees.
Because cable defects are rare, these vessels are shared by many cable systems, and the likelihood of more simultaneous errors than available vessels is relatively low. AJC has two separate agreements for the provision of marine maintenance services. As part of these agreements, the AJC has access to cable ships, expertise and associated depots in which spare cables, consumables and submarines are stored. Operating costs paid by the cable owner who requests repair to the cable carrier. Table 17.1 shows a comparison between the two types of maintenance contracts. The result was the creation of a cable maintenance area. For example, the Yokohama area (YZ) has been developed for cables in North Asia and the Pacific Northwest. Next to the YZ, we have the North America zone, the SEAIOCMA zone and the Fiji area in the Asia-Pacific region.
The PIOCMA agreement includes the NAZ, Yokohama and SEAIOCMA agreements. It provides mutual support after natural disasters and provides consortium members with risk management solutions. The last time PIOCMA was called was during the Taiwan earthquake in 2006, which significantly slowed down internet traffic. More recently, PIOCMA was on alert after the 2011 Japanese tsunami, but was not put on alert. Thomas Soerensen, Nigel Weaver and Ove Smidt  wrote a comparison between private contracts and area maintenance contracts from the perspective of a systems provider that also provides private maintenance services. Since the inauguration of the world`s first Trans-Pacific Submarine Cable (TPC-1) in 1964, Kokusai Cable Ship Co., Ltd. (KCS) has maintained almost all international submarine cables in the Asia-Pacific region.