NFPA 110 (Standard for Emergency and Standby Power) Section 7.9.2 requires a fuel oil day tank be provided when the main tank is not close enough to the generator to provide sufficient suction head from the prime mover integral fuel oil pump. A day tank is also required if the engine manufacturer's fuel pump static head limits are exceeded when the main tank is at full fuel oil level.
Section 5.5.3 indicates minimum sizing requirements for the main tank, while other documents have maximum sizing allowances for the day tank.
I cannot find minimum sizing requirements for the day tank in NFPA 110 or other codes and standards. Can someone point me in the correct direction?
Submitted anonymously and posted for discussion. Discuss This | Submit Your Question | Subscribe
Subscribe and learn something new each day:
Thank You to Our Top
October '20 Contributors!
Sprinkler Designer or Engineer?
Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more:
Daily discussions are open-ended fire protection, fire alarm, and life safety questions submitted anonymously for the benefit of sharing expertise and learning from other perspectives. Anyone can submit a question here:
2020 PE Prep Guide
PE Prep Series
2020 PE Prep Series
(Click to enlarge)
Visit July-October for daily Fire Protection PE Exam sample questions.
Solutions are posted the day after posting.
Comment with your solutions, questions or clarifications.
Please note that questions posted are unofficial and in accordance with NCEES rules are intended to be similar to actual exam questions, not actual exam questions themselves.