15 C.F.R. § 286.4
The program is operated on a cost reimbursable basis. It is open for voluntary participation by any U.S.-based body that conducts activities related to conformity assessment falling within the program's scope. A common procedural approach is followed in responding to a request to participate. (See § 286.7 Evaluation process.) All evaluation activities rely on the use of generic program requirements based on standards and guides for the operation and acceptance of activities related to conformity assessment. Specific criteria for use in each evaluation are derived from the program requirements, as appropriate, for the mandated foreign technical requirements specified in the request to participate. A request involving a foreign technical requirement not previously addressed by NVCASE will result in an announcement of NIST's intent to develop evaluation criteria specific to the relevant requirements. NIST will contact all cognizant and interested federal agencies to coordinate appropriate actions and procedures.
15 C.F.R. §286.4