Refrigeration

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Refrigeration

October 5, 2023
mike@standardsmichigan.com
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Stony Brook University’s New Ultra-Low-Temp Walk-in Freezer Farm

Walk-in refrigerators play a crucial role in food preparation areas in education communities; residence halls, hospitals, research laboratories and large football stadium not the least of them: 

  1. Food Storage: They provide space for perishable foods, such as fruits, vegetables, meats, dairy products, and prepared dishes. They help maintain the freshness and quality of ingredients by keeping them at the appropriate temperature.
  2. Temperature Control: They allow precise temperature control, ensuring that food items are kept at the correct temperature to prevent spoilage and bacterial growth. Different shelves or zones within the refrigerator can be set to various temperatures to accommodate various types of food.
  3. Extended Storage: Compared to reach-in refrigerators or freezers, walk-ins offer a larger storage capacity. This is especially beneficial for residential kitchens that need to store bulk quantities of ingredients, prepared dishes, and food supplies.  
  4. Organization: Walk-in refrigerators are designed with shelving, racks, and storage options that enable proper organization of food items. This organization makes it easier for kitchen staff to access ingredients quickly during busy service times.
  5. Prep Space: In addition to storage, some walk-in refrigerators are equipped with prep tables or counters. This feature allows chefs and kitchen staff to work directly within the cold storage area, making it more convenient to prepare ingredients and assemble dishes.
  6. Energy Efficiency: Modern walk-in refrigerators are designed with energy-efficient features, including well-insulated panels and energy-efficient compressors, helping to reduce energy consumption and operating costs.
  7. Compliance with Regulations: Many health and safety regulations require commercial kitchens to store perishable foods at specific temperatures. Walk-in refrigerators are designed to meet these regulatory requirements.

ASHRAE 15 sets the standard of care for safe design, construction, installation and operation of refrigeration systems. It establishes safeguards for life, limb, health, and property and prescribes safety requirements.  This standard does not apply to refrigeration systems using ammonia (R-717) as the refrigerant.  (ASHRAE Standard 34-2022, Designation and Safety Classification of Refrigerants covers that domain.)

As of this posting we find only one markup on proposed changes to ASHRAE 15; that one having more to do with correlation with changes to the one of the ASME Boiler Code (a lower tier priority for us).

Proposed Addendum a to Standard 15-2022, Safety Standard for Refrigeration Systems

Consultation on that markup closes October 22, 2023.

 

Energy Standard for *Sites* and Buildings

Other ASHRAE committees post their consultations at the link below:

Online Standards Actions & Public Review Drafts

We maintain the ASHRAE catalog on the standing agenda of nearly every topic we cover every day.  See our CALENDAR.


Issue: [Various]

Category: Mechanical, Electrical, Energy Conservation, Facility Asset Management, US Department of Energy, #SmartCampus

Colleagues: Mike Anthony, Larry Spielvogel, Richard Robben

Guide to Premises Security

October 4, 2023
mike@standardsmichigan.com
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School of Aristotle | Gustav Spangenberg

Managing capital‐intensive campus infrastructure embedded within a politically sensitive community presents challenges not present in private industry real assets. Differences in everything from department culture to annual facility use patterns mean that facility managers cannot implement the same safety approaches in all buildings.  Approaches must be scaled and tailored to the occupancy type and informed by the interconnectedness and the specifics of a given facility.  Accordingly, the original University of Michigan standards advocacy enterprise (see ABOUT) began following the development of safety concepts in both NFPA 730 and NFPA 731 with the release of the 2008 Edition.   Thereafter, it collaborated with trade associations and subject matter experts from other universities (notably Georgetown University and Evergreen State University) to advocate user-interest concepts in the 2011 revisions.

Since 2008, campus security issues have only become more complex technically; across an expanding minefield of sensitivities.   Since 2008 we have observed the emergence of about one-hundred new consensus products being developed by the same number of new trade associations and producers presenting campus security solutions.

NFPA 730 Guide to Premise Security is a consensus document that describes construction, protection, occupancy features, and practices intended to reduce security vulnerabilities to life and property.  Related document — NFPA 731 Standard for the Installation of Electronic Premises Security Systems covers the application, location, installation, performance, testing, and maintenance of electronic premises security systems and their components.   The first is a performance document; the second a prescriptive document for the construction, operation and maintenance of electrotechnologies that support premise security.

Public consultation on the 2023 revision closed January 5, 2022 however the NITMAM process permits additional comment at the 2023 NFPA Annual meeting in Las Vegas in June 2023.

The 2026 Edition is now open for public input until January 4, 2024.

As always, we encourage direct participation by user-interests supporting the education facility industry.   You may do so by CLICKING HERE.

It is never a bad idea to key in comments on your own but if you would like some insight into our advocacy vectors since 2008 you are welcomed to click in our periodic Risk and Public Safety colloquia during which time we pick through technical, policy and enforcement specifics.   We have been hammering on Chapters 11 and 12, Education and Healthcare Facilities, respectively; for five cycles.   See our CALENDAR for the next online meeting; open to everyone.

 

Issue: [10-3], [11-58], [14-44] and [16-127]

Category: Electrical, Telecommunications, Information & Communications Technology, Public Safety, Risk Management, #SmartCampus

Colleagues: Mike Anthony, Jim Harvey, Richard Robben


More

Department of Homeland Security: K-12 School Security

National Campus Safety and Security Project

NFPA 730 2023 Public Input Report

NFPA 730 730_F2019_PMM_AAA_FD_PIresponses

NFPA 730_F2019_PMM_AAA_SD_PCresponses

ARCHIVE / NFPA 730 Guide to Premises Security

 

Catalog: BUILDERS HARDWARE MANUFACTURER ASSOCIATION

October 4, 2023
mike@standardsmichigan.com

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Builders Hardware Manufacturer Association Standards Catalog


ARCHIVE: April 6, 2019

The Builders Hardware Manufacturers Association (BHMA) is an ANSI accredited standards developing organization for building access and egress technology that education industry real asset managers find referenced deep in the architectural and electrical sections of construction contract specifications (as in “Conform to all applicable standards”).  Architects, electrical, fire protection and information and communications technology professionals usually have to collaborate on the design, construction. operations and maintenance of fenestration technologies.

Gone are the days when a door was just a door (or “opening” or “fenestration”).   Doors are now portals; an easily identifiable control point in the Internet of Things electrotechnical transformation.  There are 100’s of thousands of them on large research university campus; for example.  As we explain in our School Security Standards post the pace of standardization in public safety management and technology has increased; driven by events.  Some of the risk management can be accomplished with integrated technical solutions that are complex and more expensive to design, build, operate and maintain.

A fair estimate of the annualized cost of a door now runs on the order of $1000 to $10,000 per door (with hospital doors at the high end).

Loreto Secondary School | Kilkenny, Ireland

BHMA develops and maintains performance standards for locks, closers, exit devices and other builders hardware.  It has more than 40 ANSI/BHMA  standards. The widely known ANSI/BHMA A156 series of standards describes and establishes features and criteria for an array of builders hardware products including locks, closers, exit devices, butts, hinges, power-operated doors and access control products.   They are listed on the link below:

BHMA Standards Home Page

BHMA has opened one of its standards for public review that is relevant to our contribution to the security and sustainability agenda of the education facility industry; an agenda that necessarily involves a growing constellation of interacting specifics

BHMA A156.4 Standard for Door Controls – Closers.  This Standard contains requirements for door closers surface mounted, concealed in the door, overhead concealed, and concealed in the floor. Also included are pivots for floor closers. Criteria for conformance include cycle, operational, closing force, and finish tests.

Given that BHMA consensus products are largely product standards (much the same way UL Standards are product standards) it is wise to keep an eye on a related installation standards found in the fenestration sections of model building and fire safety codes and in ASTM E2112  Standard Practice for Installation of Exterior Windows, Doors and Skylights.

Comments are due May 6th.  You may obtain an electronic copies of any of the foregoing from MTierney@kellencompany.com and send comments to the same (with copy to psa@ansi.org).

Roxbury Community College | Roxbury Crossing, Massachusetts

The BHMA suite is on the standing agenda of our monthly Construction Specification and Design Guideline teleconference; an informal session that should interest building contractors and design professionals who prepare documents that use the general purpose clause: “Conform to all applicable standards”.   That usually means the latest standard.  See our CALENDAR for the next online meeting; open to everyone.

 

Issue: [19-129]

Category: Architectural, Electrical, Facility Asset Management, Telecommunication, Public Safety, #SmartCampus, Risk Management

Colleagues: Mike Anthony, Jim Harvey. Jim Vibbart

 


LEARN MORE:

BHMA Standards Revision Status Tracking

 

 

Real Time Door Security System With Three Point Authentication

October 4, 2023
mike@standardsmichigan.com
,
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Real Time Door Security System With Three Point Authentication

 

N. S. Vinoth Kumar – Lakshmi Narayanan K – Bharathi V – Naresh R

College of Engineering and Technology, SRM Institute of Science and Technology, Chennai

Vasim Babu M

KKR & KSR Institute of Technology and Sciences, Vinjanampadu, Andhra Pradesh

 

Abstract:  A smart way to solve the common problem of conventional door-locking system is proposed using conventional lock key methodology and it can be cloned and used by anyone. The proposed system is to make a secure door lock security system with two factor authentications. The user has to use Radio Frequency Identification tag. The tag’s data will be saved in a database. When the tag is read by the Radio Frequency Identification reader, the user has to input a pass code. After the pass code is entered, the user will receive a One-time password on his mobile device to unlock the door. The biggest advantage of proposed system is that the introduction of two factor authentication to gain the access to the door, which makes it more secure.

 

Abiit sed non oblitus

October 2, 2023
mike@standardsmichigan.com

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Metering & Billing

October 2, 2023
mike@standardsmichigan.com
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Appliances

October 2, 2023
mike@standardsmichigan.com

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salutariness clean hygiene

Most sanitation technologies are driven by electrical power — motors, pumps. heating and cooling elements, etc.  The trajectory of product innovation, installation and maintenance practices are guided by electrical power capacity and availability.

Article 422 of the National Electrical Code covers safe wiring practices and is on the front end of new revision cycle.  Comments on Public Input for the 2026 Revision will be received until 28 August 2024

2026 National Electrical Code Workspace

Las lavanderas (1883) (Museo Nacional de Cataluña) de Joaquín Vayreda (español, 1853-1903)

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