Reactiivty Management

Question 1

What two procedures are referenced by Operations for reactivity management guidance?

Answer 1

1. AD-OP-ALL-1000 Conduct of Operations

2. AD-OP-ALL-0203 Reactivity Management

Question 2

What is the definition of Reactivity Management?

Answer 2

The systematic and philosophical direction given to controlling conditions that affect reactivity.

Question 3

What is included in Reactivity Management?

Answer 3

All activities that ensure core reactivity and stored nuclear fuel(where the potential for criticality can occur) are monitored and controlled consistent with fuel design and operating limits

Question 4

What has INPO identified Reactivity Management as a key factor for?

Answer 4

INPO has identified Reactivity Management as a key factor in ensuring maintenance of barriers to fission product release

Question 5

What are the Auxiliary Operator’s responsibilities associated with Reactivity Management?

Answer 5

The AO notifies the Control Room operators prior to manipulating equipment in the plant which could affect reactivity, unit reliability, or Control Room alarms/indications

Question 6

When are Reactivity Management related peer checks performed?

Answer 6

All reactivity management related manipulations are peer-checked

Question 7

What are the elements of successful communications?

Answer 7

1. Clear, concise, and on an appropriate level
2. Important instructions should be written
3. Ensure proper understanding
4. Use the following items:
   A. STAR
   B. 3-way usage
   C. Phonetics
   D. Pre-job briefs
   E. Name first
   F. Limit distractions

Question 8

What Auxiliary Operator activities can affect reactivity?

Answer 8

1. Demineralizer operations - KF, NV
   - Boron change
2. Spent Fuel Pool operations - FW, KF
   - Temperature/boron change
3. Filling & venting primary systems - NV, NC, NI, ND
   - Boron change
4. Feedwater operations - BB, CF, CA
   - Temperature change
5. Steam valve manipulations - SA, SB, SM, SV, MSRs
   - Temperature change

Question 9

What is the basis of SOER 96-1, Control Room Supervision, Operational Decision Making, and Teamwork?

Answer 9

1. The Shift Manager should always remain in a supervisory role, supervising the plant, the Control Room crew, and the control board operators
2. Teamwork is an integral part of the crew’s success
3. Excessive distractions to the Control Room crew must be carefully managed and controlled
4. We need to continually relearn the need for conservative decision making in the Control Room. We need to remain conservative in the face of the economic and competitive pressures that are a reality in the industry.
5. Systematically plan the rotation of control room shift crews