202.33 RCB HVAC

Question 1

• 202.33 RCB HVAC*
• • *

Function of RCB HVAC

Normal Conditions

Answer 1

Normal Conditions

Control RCB thermal environment within limits of equipment design and for personnel comfort

Maintain RCB atms pressure w/in design limits

Reduce airborne radioactivity prior to personnel access <10CFR20 limits

Remove heat gennerated in CRDMs

Purge RCB Tendon access gallery

Limit normal Rad releases < 10CFR20 limits

Question 2

• 202.33 RCB HVAC*
• • *

Function of RCB HVAC

Accident Conditions

Answer 2

Cool / Dehumidify RCB to reduce pressure (min LOCA efects)

Backup to H2 Recombiners by diluting (supplemental purge)

Limit Rad releases <10CFR50.67