Reliability Analysis for Power to Fire Pumps

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Reliability Analysis for Power to Fire Pumps

July 17, 2025
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Reliability Analysis for Power to Fire Pump Using Fault Tree and RBD

Robert Schuerger | HP Critical Facilities (Project Lead, Corresponding Author) 

Robert Arno | ITT Excelis Information Systems

Neal Dowling | MTechnology

Michael  A. Anthony | University of Michigan

 

Abstract:  One of the most common questions in the early stages of designing a new facility is whether the normal utility supply to a fire pump is reliable enough to “tap ahead of the main” or whether the fire pump supply is so unreliable that it must have an emergency power source, typically an on-site generator. Apart from the obligation to meet life safety objectives, it is not uncommon that capital on the order of 100000to1 million is at stake for a fire pump backup source. Until now, that decision has only been answered with intuition – using a combination of utility outage history and anecdotes about what has worked before. There are processes for making the decision about whether a facility needs a second source of power using quantitative analysis. Fault tree analysis and reliability block diagram are two quantitative methods used in reliability engineering for assessing risk. This paper will use a simple one line for the power to a fire pump to show how each of these techniques can be used to calculate the reliability of electric power to a fire pump. This paper will also discuss the strengths and weakness of the two methods. The hope is that these methods will begin tracking in the National Fire Protection Association documents that deal with fire pump power sources and can be used as another tool to inform design engineers and authorities having jurisdiction about public safety and property protection. These methods will enlighten decisions about the relative cost of risk control with quantitative information about the incremental cost of additional 9’s of operational availability.

 

 

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British High Schoolers Try American Fried Chicken, Biscuits & Sausage Gravy

July 16, 2025
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Biscuits and sausage gravy is firmly rooted in Southern American cuisine, which has a rich history influenced by African, Native American, European, and other culinary traditions. The combination of biscuits and sausage gravy reflects the availability of ingredients in the South, where biscuits (similar to a type of British scone) and pork products were common.

The concept of biscuits, similar to what Americans call biscuits, has British origins. Early settlers brought this baking technique with them to the American colonies. However, the American biscuit evolved over time to become lighter and fluffier compared to the denser British biscuit.

Kitchens 300

Mushroom Coffee

July 16, 2025
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University of Miami Net position: 2023 $7.774B  | MapFacilities & Operations

Standards Florida

Mushroom coffee (Michigan State University), a blend of coffee and medicinal mushroom extracts like lion’s mane and chaga, has gained traction on college campuses due to its perceived health benefits and social media buzz. Students, often seeking alternatives to high-caffeine drinks, are drawn to its lower caffeine content—about 40-60 mg per cup compared to 95 mg in regular coffee—reducing jitters while maintaining focus.

Claims of enhanced cognition, immunity, and stress relief resonate with health-conscious Gen Z, fueled by ancient medicinal traditions and trendy marketing. Campus coffee shops and online retailers make it accessible, though its higher cost (often $20-$40 for 30 servings) is a drawback for budget-conscious students.

Despite limited scientific backing for health claims, the earthy taste and functional appeal align with the wellness culture, making mushroom coffee a niche but growing staple among students balancing academics and self-care

Are Mushrooms Magical?


 

archive

print (“Hello World!”)

July 16, 2025
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Data Points (2023 Estimates for 193 countable nations):

Global Gross Domestic Product (GGDP) ~ $106.17T

Anglosphere (United States, United Kingdom, Canada, Australia, New Zealand) ~ $31T (or ~32% of GGDP)

United States GDP $27T (or about 1/3rd of GGDP)

 

“Livres des Merveilles du Monde” 1300 | Marco Polo | Bodleian Libraries, University of Oxford

Today we break down consultations on titles relevant to the technology and management of the real assets of education communities in the United States specifically; but with sensitivity to the global education markets where thousands of like-minded organizations also provide credentialing, instruction, research, a home for local fine arts and sport.

We steer away from broad policy issues and steer toward technical specifics of public consultations presented by national member bodies of the International Electrotechnical Commission, the International Organization for Standardization, the International Telecommunications Union and the American National Standards Institute.  If there is a likelihood that the titles published by these workgroups will be incorporated by reference into public safety or sustainability legislation; or integrated into the cost structure of education communities in any other way, we will listen carefully and contribute meaningfully where we can.

Vienna Convention on Diplomatic Relations | 1961 

 
“Even apart from the instability due to speculation, there is the instability due to the characteristic of human nature that a large proportion of our positive activities depend on spontaneous optimism rather than on a mathematical expectation, whether moral or hedonistic or economic. Most, probably, of our decisions to do something positive, the full consequences of which will be drawn out over many days to come, can only be taken as the result of animal spirits — a spontaneous urge to action rather than inaction, and not as the outcome of a weighted average of quantitative benefits multiplied by quantitative probabilities. Enterprise only pretends to itself to be mainly actuated by the statements in its own prospectus, however candid and sincere that prospectus may be. Only a little more than an expedition to the South Pole is it based on an exact calculation of benefits to come. Thus if the animal spirits are dimmed and the spontaneous optimism falters, leaving us to depend on nothing but a mathematical expectation, enterprise will fade and die; — though fears of loss may have a basis no more reasonable than hopes of profit had before.”

“The General Theory of Employment, Interest, and Money” 

— John Maynard Keynes, 1936

International Standard Classification of Education

American National Standards Institute

World Standards Week 2023

Setting the standard: Grange members can be voice of rural users in standardization system

ISO/IEC/ITU coordination – Listing of New Work Items (New: Passwords Required)

New ANSI Education Initiative Supports the Next Generation of Standardization Leaders

International Code Council

2024/2025/2026 ICC CODE DEVELOPMENT SCHEDULE (3/17/2023)

International Zoning Code

International Electrotechnical Commission

International Electrotechnical Commission | CDV Consultations

IEC Open Consultations: 20 December

USNC/IEC  Current Winter 2023

IEC 87th General Meeting | Cairo, 22 – 26 October

Results from IEC General Assembly 2022 | San Francisco

Going All-Electric

Extended Versions  Certain standards are required to be read in tandem with another standard, which is known as a reference (or parent) document. The extended version (EXV) of an IEC Standard facilitates the user to be able to consult both IEC standards simultaneously in a single, easy-to-use document.

Elettrotecnico Lingua Franca

International Telecommunications Union

The case for standardizing homomorphic encryption

Outcomes of the ITU Plenipotentiary Conference

World Radiocommunication Conference

International Standardization Organization

How ISO codes connect the world

New partnership for ISO and ICC

Must-have skills for the green economy

Building Environment Design

A partial list of projects with which we have been engaged as an active participant; starting with the original University of Michigan enterprise in the late 1990’s and related collaborations with IEEE and others: (In BOLD font we identify committees with open consultations requiring a response from US stakeholders before next month’s Hello World! colloquium)

IEC/TC 8, et al System aspects of electrical energy supply

IEC/TC 22 Power electronic systems and equipment

IEC/TC 34 Lighting

IEC/TC 62 Electrical equipment in medical practice

IEC/TC 64 Electrical installations and protection against electric shock

IEC/TC 82 Solar photovoltaic energy systems

IEC/SYC Electrotechnical Aspects of Smart Cities

SyC Smart Energy


Standards Michigan Workspace for IEC/ITU Consultations


ISO/IEC JTC 1 Information Technology, et. al

ISO/TC 205 Building environmental design

ISO/TC 215 Health Informatics

ISO/TC 229 Nanotechnologies

ISO/TC 232 Education and Learning Services

ISO/TC 251 Asset Management

ISO/TC 260 Human Resource Management

ISO/TC 267 Facility Management

ISO/TC 268 Sustainable cities and communities

ISO/TC 274 Light and Lighting

ISO/TC 276 Biotechnology

ISO/TC 301 Energy management and energy savings

ISO/TC 304 Healthcare organization management

ISO/TC 336 Laboratory Design

We collaborate with the appropriate ANSI US TAG; or others elsewhere in academia.   We have begun tracking ITU titles with special attention to ITU Radio Communication Sector.

main( ) {
        printf("hello, world\n");
}

We have collaborations with Rijksuniversiteit Groningen, Sapienza – Università di Roma, Universität Zürich, Universität Potsdam, Université de Toulouse. Universidade Federal de Itajubá, University of Windsor, the University of Alberta, to name a few — most of whom collaborate with us on electrotechnology issues.  Standards Michigan and its 50-state affiliates are (obviously) domiciled in the United States.  However, and for most issues, we defer to the International Standards expertise at the American National Standards Institute

ANSI INTERACTIVE MAP: INTERNATIONAL TRADE & DEVELOPMENT

Use the login credentials at the upper right of our home page.

 

 

These three regions make up 50% of world GDP

 

More

Data Point: Global Construction Market is Expected to Reach $11 trillion by 2031

General Public Participation in ANSI ISO Activities

March 2021 edition of the TMB Communiqué.

ISO/IEC Directives, Part 1

ISO/IEC Directives, Part 1, Consolidated ISO Supplement

International Electrotechnical Commission Annual Report 2019

ISO Update  2021-02-09

ANSI Education & Training Overview

ANSI Guide for US Delegates

ITU Digital Technical Standards


* A “Hello, World!” program generally is a computer program that outputs or displays the message “Hello, World!”. Such a program is very simple in most programming languages (such as Python and Javascript) and is often used to illustrate the basic syntax of a programming language. It is often the first program written by people learning to code. It can also be used as a sanity test to make sure that a computer language is correctly installed, and that the operator understands how to use it.

 

Hegemon Essex & Hauts-de-Seine Counties

July 16, 2025
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Square D was founded in 1902 in Detroit, Michigan, by Bryson Dexter Horton and James B. McCarthy as McBride Manufacturing Company, focusing on electrical fuses. By 1908, it became Detroit Fuse and Manufacturing, adopting the iconic “Square D” logo—a “D” in a square—reflecting its Detroit roots.

Renamed Square D in 1917, the company pioneered safety switches and circuit breakers, growing significantly with 18,500 employees and $1.65 billion in sales by 1991. That year, after a competitive 10-week bidding process, French multinational Groupe Schneider S.A. acquired Square D for $2.23 billion, raising its offer from $1.96 billion to $88 per share.

The acquisition, approved by Square D’s board and the U.S. Justice Department, made Schneider Electric the world’s largest electrical distribution equipment manufacturer, integrating Square D’s innovative products into its global energy management portfolio.

Lorem ipsum

Iced Americano

July 16, 2025
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University of Michigan Net Position 2024: $22.335 billion

Michigan Central | Michigan West | Michigan Upper Peninsula | Michigan East

Bert Askwith worked his way through college shuttling students to and from Detroit Metropolitan Airport until his graduation in 1931; when two semester tuition cost $300.  With no student debt he founded and grew Campus Coach Lines that still provides the same services at many other US campuses.  He donated part of his fortune to establish a cafe in the Undergraduate Library; which now serves an expanding and bewildering catalog of caffeine-based drinks found in educational settlements worldwide.


When new foreign national students arrive at U.S. colleges and universities, they often enter environments where a left-leaning worldview is prominent and pervasive. Many campuses today emphasize themes of social justice, equity, and systemic critique that align with a preference for larger, more interventionist government. Faculty and administrative messaging can reinforce these ideas, portraying government as the primary instrument for addressing inequality, redistributing resources, and regulating social behavior.

For many international students, this can be both eye-opening and disorienting. They may come from countries with different political traditions, including skepticism of state power due to experiences with corruption or authoritarianism. Yet, in the university setting, they encounter curricula and campus cultures that valorize activist government solutions while often criticizing markets, traditional institutions, or individual responsibility. Programs in the humanities and social sciences in particular tend to frame policy questions through a progressive lens that sees expansive government action as not just beneficial but morally necessary.

This immersion—some might call it a “marination”—shapes perspectives over time. Students adopt the language of social justice, climate policy, and identity politics, often without exposure to robust counterarguments. While this experience can broaden horizons and foster empathy for marginalized groups, it also risks narrowing intellectual diversity and suppressing debate about the limits and costs of government power. For international students, it can mean graduating with a worldview significantly more aligned with the American academic left than with the diverse political traditions of their home countries.

Kitchenettes

Strawberry Daiquiri Cocktail

July 15, 2025
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Founded in 1999, the European Bartender School (EBS) is the world’s leading bartending school, operating over 25 schools across five continents. Its mission is to provide top-quality, globally recognized bartending and barista courses designed by industry experts.

EBS aims to train aspiring bartenders with practical and theoretical skills, offering a comprehensive International Bartender Course that equips students for global career opportunities. With over 80,000 graduates, EBS fosters a vibrant community, connecting students to jobs via EBS MatchStaff. The school emphasizes a fun, social learning experience, blending professional education with personal growth and travel

Chilled Banana Pudding Overnight Oats

July 15, 2025
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Banana Pudding Overnight Oats is a delicious and nutritious breakfast dish made by combining rolled oats, mashed bananas, milk, and other flavorings, and allowing them to sit and “soak” in the refrigerator overnight. This results in a creamy, flavorful, and satisfying bowl of oats that are ready to eat in the morning without any cooking required. It’s convenient make-ahead breakfast option that can be customized to suit individual tastes and dietary preferences.  Here’s a simple recipe for Banana Pudding Overnight Oats:

Ingredients:

1 ripe banana, mashed
1/2 cup rolled oats
1/2 cup milk (any type of milk, such as dairy milk, almond milk, or coconut milk)
1 tablespoon chia seeds (optional)
1 teaspoon vanilla extract
1/2 teaspoon ground cinnamon
1/4 teaspoon salt
1 tablespoon sweetener of choice (such as honey, maple syrup, or agave nectar)
Additional banana slices, crushed cookies, or whipped cream for garnish (optional)

Instructions:

In a medium-sized bowl, mash the ripe banana with a fork until smooth.  Add the rolled oats, milk, chia seeds (if using), vanilla extract, cinnamon, salt, and sweetener to the bowl with the mashed banana. Stir well to combine. Cover the bowl with plastic wrap or a lid and refrigerate overnight, or for at least 4-6 hours, to allow the oats to absorb the liquid and soften.

In the morning, give the oats a good stir and adjust the sweetness or consistency to taste by adding more sweetener or milk if desired.  Serve the Banana Pudding Overnight Oats in bowls or jars, and garnish with additional banana slices, crushed cookies, or whipped cream if desired.

Enjoy your delicious and creamy Banana Pudding Overnight Oats for a nutritious and convenient breakfast!

More:

Spoon University 

Texas A&M University: Banana Nut Overnight Oats

Harvard University: Oats the Nutrition Source

Colorado University: Overnight Oats

US Food & Drug Administration: Gluten-Free Labeling of Foods

Nourriture d’automne

Campus Electric Transit

July 15, 2025
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University of Michigan | Washtenaw County

Widespread use of electric vehicles (EVs) on large university campuses offers significant possibilities but also presents challenges. Possibilities include reduced carbon emissions, aligning with sustainability goals, as EVs produce zero tailpipe emissions compared to gasoline-powered vehicles. Campuses could deploy electric shuttles, maintenance vehicles, or shared EV fleets, decreasing reliance on fossil fuels. EVs could integrate with campus microgrids, leveraging renewable energy sources like solar panels. They also promote quieter environments, reducing noise pollution in academic settings. Universities could foster innovation by integrating EV infrastructure into research, such as smart grid technology or battery development.

Pros include environmental benefits, lower operating costs (electricity is cheaper than fuel), and enhanced campus branding as eco-friendly. EVs require less maintenance, saving long-term costs. Students and staff benefit from cleaner air and modern transportation options.

Cons include high upfront costs for EVs and charging infrastructure, straining budgets. Limited range and charging times may disrupt campus operations, especially for time-sensitive tasks. Charging station availability could lead to congestion or inequitable access. Battery production raises ethical concerns about resource extraction. Retrofitting existing fleets and managing grid demand pose logistical hurdles.

Balancing these factors requires strategic planning, but EVs could transform campus mobility sustainably.

We have followed standards setting action in this domain since 1993.   During todays colloquium at 15:00 UTC we will answer questions about our involvement, guided by our Safer-Simpler-Lower Cost – Longer Lasting advocacy in all relevant standards.  Use the login credentials at the upper right of our home page. 

National Electrical Manufacturers Association

NECA Releases Revised Standard for Installing and Maintaining Electric Vehicle Supply Equipment (EVSE)

Gallery: Campus Transportation and Parking

EV Charging Stations Integration into Public Lighting Infrastructure

Electric Vehicle Charging

Campus Micromobility

Fast & Ultra-Fast Charging for Battery Electric Vehicles

Gallery: Electric Vehicle Fire Risk

(C)onnected & (A)utomated (V)ehicle Code

Drivers and Barriers to Implementation of Connected, Automated, Shared, and Electric Vehicles

Electric Vehicle Charging

Et al.

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