Lesson 2/Learning Event 5
LEARNING EVENT 5:
DETERMINE THE METHOD OF CONTROL
The two types of control for a survey are centralized control and decentralized control.
characteristics of each are discussed in the following paragraphs.
The primary method of survey control is a centralized operation in which the authority ordering the
survey provides the control party and the radiological data are reported directly to the control party. For
example, if division orders an aerial survey, the NBCE of the TOC designates the method of control and
normally acts as the control party. Data are not screened, consolidated, or evaluated at intermediate
headquarters, but are forwarded directly to the NBCE for processing, evaluation, and dissemination.
Centralized control is used when the area of interest crosses two or more subordinate unit areas.
The alternate method of control is a decentralized operation directed through command channels and
controlled by a subordinate command that furnishes the radiological data to the authority ordering the
The NBCE may request that a subordinate unit be directed to conduct a survey. For example, division
may direct a brigade to perform a survey of some sector or all of the brigade area. The brigade control
party plans and conducts the survey. This control party will plan the survey, brief and direct the survey
parties, receive and check the data for completeness and validity, and transmit the data through proper
channels to the division NBCE. Decentralized control is used when the area of interest lies entirely
within the area of a single subordinate unit.