constraints (e.g., width, length, height, component and system rating, and weight) that must be considered during system development. Customs requirements, air shipping requirements, rail shipping requirements, container considerations, special movement precautions, mobility, and transportation asset impact of the shipping mode or the contract shipper must be carefully assessed. PHS&T planning must consider: System constraints (such as design specifications, item configuration, and safety precautions for hazardous material) Special security requirements Geographic and environmental restrictions Special handling equipment and procedures Impact on spare or repair parts storage requirements Emerging PHS&T technologies, methods, or procedures and resource-intensive PHS&T procedures Environmental impacts and constraints Facilities The Facilities logistics element is composed of a variety of planning activities, all of which are directed toward ensuring that all required permanent or semi-permanent operating and support facilities (for instance, training, field and depot maintenance, storage, operational, and testing) are available concurrently with system fielding. Planning must be comprehensive and include the need for new construction as well as modifications to existing facilities. It also includes studies to define and establish impacts on life cycle cost, funding requirements, facility locations and improvements, space requirements, environmental impacts, duration or frequency of use, safety and health standards requirements, and security restrictions. Also included are any utility requirements, for both fixed and mobile facilities, with emphasis on limiting requirements of scarce or unique resources. Design interface Design interface is the relationship of logistics-related design parameters of the system to its projected or actual support resource requirements. These design parameters are expressed in operational terms rather than as inherent values and specifically relate to system requirements and support costs of the system. Programs such as "design for testability" and "design for discard" must be considered during system design. The basic requirements that need to be considered as part of design interface include: Reliability Maintainability Standardization Interoperability Safety Security Usability Environmental and HAZMAT Privacy, particularly for computer systems Legal See also Reliability, availability and serviceability (computer hardware) References The references below cover many relevant standards and handbooks related to Integrated logistics support. Standards Army Regulation 700-127 Integrated Logistics Support, 27 September 2007 British Defence Standard 00-600 Integrated Logistics Support for MOD Projects Federal Standard 1037C in support of MIL-STD-188 IEEE 1332, IEEE Standard Reliability Program for the Development and Production of Electronic Systems and Equipment, Institute of Electrical and Electronics Engineers. MIL-STD-785, Reliability Program for Systems and Equipment Development and Production, U.S. Department