How Long is Impairment for Fire Pump Transfer?

11/18/2021

What are time delay intervals associated with a fire pump's energy source transfer?

Is a 2-minute wait time long enough before notating an impairment when the pump doesn't start operating at peak again after shutting down the main power on an annual pump test?

Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe

2 Comments

Joshua Freedman

11/18/2021 12:08:23 pm

NFPA 25 only says it needs to work but doesn't say how long. You have to look at the electrical code which governs that apparatus, NFPA 70. Transfer from the normal power source to the emergency source must complete within 60 seconds and meet the requirements of Article 701 of the National Electrical Code (NFPA 70). Excerpt from NFPA 70 (2017) below:

III. Sources of Power
701.12 General Requirements. Current supply shall be
such that, in the event of failure of the normal supply to, or
within, the building or group of buildings concerned, legally
required standby power will be available within the
time required for the application but not to exceed 60 seconds.

Mark Harris

11/18/2021 04:23:04 pm

Great answer Joshua. Appreciate the detail.

Leave a Reply.

Home
Our Cause

The Blog
The Forum

PE Exam Prep
The Toolkit
MeyerFire University

Pricing
Login
Support
Contact Us

MeyerFire.com is a startup community built to help fire protection professionals shine.
Our goal is to improve fire protection practices worldwide. We promote the industry by creating helpful tools and resources, and by bringing together industry professionals to share their expertise.

MeyerFire, LLC is an International Code Council Preferred Education Provider.
All text, images, and media Copyright © 2023 MeyerFire, LLC

We respect your privacy and personal data. See our Privacy Policy and Terms of Service. The views, opinions, and information found on this site represent solely the author and do not represent the opinions of any other party, nor does the presented material assume responsibility for its use. Fire protection and life safety systems constitute a critical component for public health and safety and you should consult with a licensed professional for proper design and code adherence.

Discussions are solely for the purpose of peer review and the exchange of ideas. All comments are reviewed. Comments which do not contribute, are not relevant, are spam, or are disrespectful in nature may be removed. Information presented and opinions expressed should not be relied upon as a replacement for consulting services. Some (not all) outbound links on this website, such as Amazon links, are affiliate-based where we receive a small commission for orders placed elsewhere.

How Long is Impairment for Fire Pump Transfer?

Leave a Reply.

ALL-ACCESS

SUBSCRIBE

COMMUNITY

YOUR POST

PE EXAM

FILTERS

ARCHIVES

PE PREP SERIES