[Code of Federal Regulations] [Title 48, Volume 1] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 48CFR11.101] [Page 173] TITLE 48--FEDERAL ACQUISITION REGULATIONS SYSTEM CHAPTER 1--FEDERAL ACQUISITION REGULATION PART 11_DESCRIBING AGENCY NEEDS--Table of Contents Subpart 11.1_Selecting and Developing Requirements Documents Sec. 11.101 Order of precedence for requirements documents. (a) Agencies may select from existing requirements documents, modify or combine existing requirements documents, or create new requirements documents to meet agency needs, consistent with the following order of precedence: (1) Documents mandated for use by law. (2) Performance-oriented documents. (3) Detailed design-oriented documents. (4) Standards, specifications and related publications issued by the Government outside the Defense or Federal series for the non-repetitive acquisition of items. (b) Agencies shall prepare requirements documents to achieve maximum practicable-- (1) Energy efficiency, including using products containing energy- efficient standby power devices and renewable energy technologies; and (2) Use of recovered material, other materials that are environmentally preferable, energy- and water-efficient products, and renewable energy technologies (see subparts 23.2, 23.4, and 23.7). (c) In accordance with OMB Circular A-119, ``Federal Participation in the Development and Use of Voluntary Consensus Standards and in Conformity Assessment Activities,`` agencies must use voluntary consensus standards, when they exist, in lieu of Government-unique standards, except where inconsistent with law or otherwise impractical. The private sector manages and administers voluntary consensus standards. Such standards are not mandated by law (e.g., industry standards such as ISO 9000). [60 FR 48238, Sept. 18, 1995, as amended at 62 FR 44810, Aug. 22, 1997; 64 FR 51834, Sept. 24, 1999; 66 FR 65352, Dec. 18, 2001; 68 FR 43858, July 24, 2003]