The document provides an overview of key changes between the 8th and 9th editions of UL 864, including more stringent requirements for ground fault supervision, device installation, wiring practices, alarm and trouble signal processing times, voice alarm systems, releasing devices, transmission technologies, software compliance, power supply capacity, and notification appliance circuits. Significant changes include a reduction in allowable signal processing times from 90 to 10 seconds, additional supervision for networked and voice alarm systems, and more flexible but stringent component reliability requirements. Compatibility between devices and panels is also a new critical focus area.
O documento fornece informações sobre uma linha de produtos de reposição para baterias automotivas fabricados pela Conimel, incluindo especificações técnicas e códigos de produtos para vários tipos de terminais de bateria, cordoalhas, cabos e acessórios. A empresa produz peças de reposição para atender às exigências das montadoras de veículos seguindo padrões de qualidade.
In 1943 when Bonney Forge pioneered
the “Shape of Reinforcement” for branch connections, who would have thought it would fast become a
recog- nized industry standard. Today, Bon- ney Forge Branch Connections offer complete run pipe
reinforcement while avoiding cracks, fillet welds, and sharp re-entrant corner reinforcement taper-
ing at the sides, thus preventing abrupt changes in thickness where the fitting
joins the header pipe.
This document discusses visual inspection of welds and welding terminology. It covers topics like weld joint types (butt, fillet, lap), weld features to examine (size, profile, blending), welding processes (MMA, TIG, MIG), common defects (cracks, lack of fusion), and factors that can cause defects (gap size, current, technique). Guidelines are provided for visual inspection procedures and checklists for pre-weld, during welding, and post-weld activities. Diagrams illustrate key points.
Surgical Drapes, Surgical Gowns, Surgical Table Cover, Surgical Shoe Covers, Surgical Head Caps and Surgical Face Masks Manufacturing Business. Production of Hospital and Surgical Disposables Products
Medical disposables are the products used in the medical field for various purposes to maintain the hygiene and safety standards set by the regulatory bodies. Medical disposables are manufactured with medical grade materials and are packed in sterilized conditions. They are meant for one-time use; this helps in the prevention of spreading various infectious diseases.
These medical disposables include catheters, syringes, gowns, blood glucose strips, and others. Medical disposable products directly come in contact with the blood or other materials which can be hazardous for a healthy individual.
See more
https://bit.ly/2GtwYVs
https://bit.ly/2Z8q8MA
Contact us:
Niir Project Consultancy Services
An ISO 9001:2015 Company
106-E, Kamla Nagar, Opp. Spark Mall,
New Delhi-110007, India.
Email: npcs.ei@gmail.com , info@entrepreneurindia.co
Tel: +91-11-23843955, 23845654, 23845886, 8800733955
Mobile: +91-9811043595
Website: www.entrepreneurindia.co , www.niir.org
Tags
#Disposable_Surgical_Medical_Products, #Disposable_Medical_Products, Surgical & Medical Disposables, Medical Disposable Products, Medical Disposable, Medical Disposables Manufacture, Manufacture of Medical Disposables, Medical Disposables Industry, #Production_of_Medical_Disposables, #Production_of_Surgical_Disposables, Disposable Medical Products and Surgical Drapes, Manufacturing of Medical Disposable Products, #Surgical_Drapes, Surgical Gowns, Surgical Table Cover, Shoe Covers, Surgical Head Caps, Surgical Face Masks, #Production_of_Surgical_Disposables_Gowns_and_Drapes, Medical Surgical Drapes Production, Surgical Drape Manufacture, Surgical Gowns and Surgical Drapes Manufacture, Surgical Drapes and Gowns, Manufacturing Process of Surgical Gown, #Surgical_Drapes_and_Gowns_Manufacture, Surgical Drape Manufacturing, Surgical Disposable Manufacturing Unit, Surgical Gowns Manufacture, Disposable Surgical Gown Manufacture, Surgical Gown Production, Manufacture of Disposable Surgeons Gown, Production of Surgical Disposables Gowns, #Surgical_Caps, Disposable Surgeon Cap Surgical Head Cap, Disposable Surgical Caps, Hospital and Surgical Caps, Surgeon Head Cap Manufacture, Disposables Head Cap, Surgical Shoe Covers, Disposable Shoes Cover, Shoe Cover, Disposable Protective Clothing, Disposable Shoes Cover Manufacture, Surgical Head Caps, Surgical Disposable Face Mask, Medical Face, Surgical Mask, Medical Disposable Face Masks, How to Make Surgical Mask, Surgeons Face Mask, Surgical and Procedural Masks, Surgical Face Mask Manufacture, Disposable Surgical Product Manufacture, #Detailed_Project_Report_on_Disposable_Surgical_Medical_Products, Project Report on Surgical Gown Production
The document is a product catalogue from A.N. Wallis & Co. Ltd that provides information on their earthing and lightning protection products. It introduces the company and describes the wide range of products available, which are used in construction projects around the world. The catalogue is designed to be easy to use, with indexing of products and part numbers to help customers find the products they require.
This document provides information on welding symbols according to BS 499 part 2 and BS EN 22553 (ISO 2553) standards. It explains the components and rules for welding symbols, including the arrow line, reference line, symbol, dimensions and supplementary information. Various weld types and processes are defined through symbols, such as fillet welds, butt welds, plug welds and numerical codes for welding processes. Dimensioning rules, representations of weld profiles, and examples of interpreting welding symbols from drawings are also covered.
The document discusses residual stresses and distortion that occur during welding. It explains that residual stresses develop due to local expansion and contraction during welding, and are locked in as elastic strain. Distortion results from the movement caused by these welding stresses. The document outlines various factors that influence residual stress and distortion, such as heat input, restraint, and weld metal volume. It also discusses different types of distortion and several techniques for controlling distortion, such as joint design, offsetting, balanced welding, and clamping.
This document discusses various welding processes. It separates welding into two categories: fusion welding processes that melt the base metals like arc welding, and solid state welding processes that join metals without melting, like friction welding. The document focuses on describing several common arc welding processes including: shielded metal arc welding, gas metal arc welding, flux-cored arc welding, gas tungsten arc welding, plasma arc welding, and submerged arc welding. It also covers resistance spot welding, a type of resistance welding used to join sheet metals.
O documento fornece informações sobre uma linha de produtos de reposição para baterias automotivas fabricados pela Conimel, incluindo especificações técnicas e códigos de produtos para vários tipos de terminais de bateria, cordoalhas, cabos e acessórios. A empresa produz peças de reposição para atender às exigências das montadoras de veículos seguindo padrões de qualidade.
In 1943 when Bonney Forge pioneered
the “Shape of Reinforcement” for branch connections, who would have thought it would fast become a
recog- nized industry standard. Today, Bon- ney Forge Branch Connections offer complete run pipe
reinforcement while avoiding cracks, fillet welds, and sharp re-entrant corner reinforcement taper-
ing at the sides, thus preventing abrupt changes in thickness where the fitting
joins the header pipe.
This document discusses visual inspection of welds and welding terminology. It covers topics like weld joint types (butt, fillet, lap), weld features to examine (size, profile, blending), welding processes (MMA, TIG, MIG), common defects (cracks, lack of fusion), and factors that can cause defects (gap size, current, technique). Guidelines are provided for visual inspection procedures and checklists for pre-weld, during welding, and post-weld activities. Diagrams illustrate key points.
Surgical Drapes, Surgical Gowns, Surgical Table Cover, Surgical Shoe Covers, Surgical Head Caps and Surgical Face Masks Manufacturing Business. Production of Hospital and Surgical Disposables Products
Medical disposables are the products used in the medical field for various purposes to maintain the hygiene and safety standards set by the regulatory bodies. Medical disposables are manufactured with medical grade materials and are packed in sterilized conditions. They are meant for one-time use; this helps in the prevention of spreading various infectious diseases.
These medical disposables include catheters, syringes, gowns, blood glucose strips, and others. Medical disposable products directly come in contact with the blood or other materials which can be hazardous for a healthy individual.
See more
https://bit.ly/2GtwYVs
https://bit.ly/2Z8q8MA
Contact us:
Niir Project Consultancy Services
An ISO 9001:2015 Company
106-E, Kamla Nagar, Opp. Spark Mall,
New Delhi-110007, India.
Email: npcs.ei@gmail.com , info@entrepreneurindia.co
Tel: +91-11-23843955, 23845654, 23845886, 8800733955
Mobile: +91-9811043595
Website: www.entrepreneurindia.co , www.niir.org
Tags
#Disposable_Surgical_Medical_Products, #Disposable_Medical_Products, Surgical & Medical Disposables, Medical Disposable Products, Medical Disposable, Medical Disposables Manufacture, Manufacture of Medical Disposables, Medical Disposables Industry, #Production_of_Medical_Disposables, #Production_of_Surgical_Disposables, Disposable Medical Products and Surgical Drapes, Manufacturing of Medical Disposable Products, #Surgical_Drapes, Surgical Gowns, Surgical Table Cover, Shoe Covers, Surgical Head Caps, Surgical Face Masks, #Production_of_Surgical_Disposables_Gowns_and_Drapes, Medical Surgical Drapes Production, Surgical Drape Manufacture, Surgical Gowns and Surgical Drapes Manufacture, Surgical Drapes and Gowns, Manufacturing Process of Surgical Gown, #Surgical_Drapes_and_Gowns_Manufacture, Surgical Drape Manufacturing, Surgical Disposable Manufacturing Unit, Surgical Gowns Manufacture, Disposable Surgical Gown Manufacture, Surgical Gown Production, Manufacture of Disposable Surgeons Gown, Production of Surgical Disposables Gowns, #Surgical_Caps, Disposable Surgeon Cap Surgical Head Cap, Disposable Surgical Caps, Hospital and Surgical Caps, Surgeon Head Cap Manufacture, Disposables Head Cap, Surgical Shoe Covers, Disposable Shoes Cover, Shoe Cover, Disposable Protective Clothing, Disposable Shoes Cover Manufacture, Surgical Head Caps, Surgical Disposable Face Mask, Medical Face, Surgical Mask, Medical Disposable Face Masks, How to Make Surgical Mask, Surgeons Face Mask, Surgical and Procedural Masks, Surgical Face Mask Manufacture, Disposable Surgical Product Manufacture, #Detailed_Project_Report_on_Disposable_Surgical_Medical_Products, Project Report on Surgical Gown Production
The document is a product catalogue from A.N. Wallis & Co. Ltd that provides information on their earthing and lightning protection products. It introduces the company and describes the wide range of products available, which are used in construction projects around the world. The catalogue is designed to be easy to use, with indexing of products and part numbers to help customers find the products they require.
This document provides information on welding symbols according to BS 499 part 2 and BS EN 22553 (ISO 2553) standards. It explains the components and rules for welding symbols, including the arrow line, reference line, symbol, dimensions and supplementary information. Various weld types and processes are defined through symbols, such as fillet welds, butt welds, plug welds and numerical codes for welding processes. Dimensioning rules, representations of weld profiles, and examples of interpreting welding symbols from drawings are also covered.
The document discusses residual stresses and distortion that occur during welding. It explains that residual stresses develop due to local expansion and contraction during welding, and are locked in as elastic strain. Distortion results from the movement caused by these welding stresses. The document outlines various factors that influence residual stress and distortion, such as heat input, restraint, and weld metal volume. It also discusses different types of distortion and several techniques for controlling distortion, such as joint design, offsetting, balanced welding, and clamping.
This document discusses various welding processes. It separates welding into two categories: fusion welding processes that melt the base metals like arc welding, and solid state welding processes that join metals without melting, like friction welding. The document focuses on describing several common arc welding processes including: shielded metal arc welding, gas metal arc welding, flux-cored arc welding, gas tungsten arc welding, plasma arc welding, and submerged arc welding. It also covers resistance spot welding, a type of resistance welding used to join sheet metals.
Robust and Reliable Thin-Film OLED EncapsulationBeneq
This document summarizes Beneq's atomic layer deposition (ALD) equipment portfolio and capabilities for thin film encapsulation and OLED applications. Key points include:
- Beneq is a leading supplier of ALD equipment with over 30 years of experience in applications such as thin film electroluminescence displays and moisture barriers.
- Their product line includes batch reactors for R&D and production as well as cluster tools optimized for wafer-scale manufacturing.
- ALD enables ultra-thin, pinhole-free, and flexible moisture barriers due to its precise thickness control and conformality at low temperatures.
- Beneq has numerous customer references for applications such as medical scintillator encaps
Welding is a process that joins metals through heating and melting. There are several types of welding processes including brazing, oxyfuel gas welding, arc welding, MIG welding, TIG welding, resistance welding, and electronic beam welding. Each process varies in how heat is generated and applied. Common welding joints include butt, corner, tee, lap, and edge joints. Weld symbols are used to indicate welding specifications and requirements on technical drawings.
General discussion on classification, uses of stainless steels, various causes for different problems, failures and rejects related to Stainless Steels, analysis, remedies / cures for such defects.
- Lamellar tearing is commonly observed discontinuity in fusion welding that occurs near the heat-affected zone in flange plates of T-butt joints. It is caused by factors like dilution and heat input during welding.
- Dilution is affected by the melted parent metal, melted filler metal, and weld width to depth ratio. Too low or too high heat input can both be detrimental.
- Solidification cracks can form due to the bead factor, which is the ratio of weld width to depth. A ratio greater than 1 or less than 1 can both result in cracks.
Twi cswip welding inspection notes and questionsThang Do Minh
The document discusses the duties of a welding inspector, including visual inspection of welds to identify defects and ensure they meet acceptance criteria. It describes tools that can aid inspection like magnification lenses. It outlines a code of practice for an inspection department, including checking documents, materials, equipment and welder qualifications before welding, monitoring the welding process and variables during welding, and inspecting the final weld for defects, dimensions and heat treatment after welding. Repairs should follow an authorized procedure and be re-inspected upon completion.
This document provides an overview of API 510 exam preparation materials covering service restrictions, joint efficiencies, and radiography requirements in ASME Section VIII. Some key points:
- Welded joints in vessels containing lethal substances must be fully radiographed and the vessel postweld heat treated if carbon/low alloy steel. Category A joints must be Type 1 (double welded) while Categories B-C can be Type 1 or 2.
- Joint categories define joint locations (e.g. longitudinal, circumferential). Type defines joint construction (e.g. double welded, single welded).
- Radiographs must show a minimum penetrameter image and identify unacceptable imperfections over certain size thresholds
This document discusses various weld defects including geometric defects like misalignment and metallurgical defects like cracks, porosity, and embrittlement reactions. It explains the causes and remedies for different types of defects such as angular distortion, longitudinal distortion, incomplete fusion, cracks, and porosity. The document also covers residual stresses during welding, gas dissolution and solid solution hardening, hydrogen effects including hydrogen embrittlement and cracking, and common weld testing methods like tension tests, bend tests, hardness tests, and non-destructive tests including visual inspection, liquid penetrant, magnetic particle, x-ray and ultrasonic testing.
Piping & piping materials redefinedShrenik Baid
Piping systems are used to transport fluids from one location to another. They include pipes, fittings, flanges, valves, insulation and other components. Selection of piping materials depends on factors like resistance to corrosion, strength, pressure and temperature. Common pipe materials include carbon steel, stainless steel, plastic and concrete. Flanges with gaskets and bolts are used to join pipes. Valves like gate valves, globe valves and check valves control and direct fluid flow. Insulation helps maintain temperature and protects piping. Proper selection and design of piping systems is important for safety and efficiency of industrial operations.
A review of effect of welding and post weld heat treatment on microstructure ...eSAT Journals
Abstract
Today getting high thermal efficiency in thermal and nuclear power plant is a big challenge. Many new material are developed. SA 335 grade 91 steel is modified high chrome-moly martenstitic steel. This material is having excellent toughness and high temperature creep strength. During welding, this material is having tremendous change in its microstructure and hence mechanical property. Many research works were done in this area. This paper discusses weld ability of P91 material. Effect of different welding process, type of filler wire, its chemical composition and type of flux is discussed in this paper. PWHT is necessary after welding of P91 steel. PWHT temperature and its duration affects phase transformation and mechanical properties of weld metal, HAZ and parent metal. Major focus is given on hardness, creep resistance and notch toughness.
Keywords - P91, Welding, Microstructure, Toughness, Creep, Hardness, PWHT
The document provides specifications for various pipe fittings and flanges including malleable fittings, black and galvanized steel fittings, unions, and stainless steel fittings. It includes information on materials, dimensions, threading, finishes, pressure ratings and stock ranges for items like elbows, tees, caps and flanges. Standard carbon steel flanges are covered along with temperature and pressure ratings for carbon and alloy steel flanges per Australian standards.
Surgical lighting in operation theatreAmol Gaikwad
This document discusses surgical lighting in operating theatres. It covers topics like the importance of lighting for surgeons' vision, factors to consider when selecting lighting like adjustability, brightness and control. It describes technical specifications of lighting like lux levels, color rendition, color temperature, and depth of illumination. Norms and requirements for surgical lights set by IEC are outlined, including the need for homogeneous light, minimum lux levels and color rendering. Different configurations for surgical lights like ceiling-mounted, wall-mounted and floor standing are briefly explained. Lamp technologies including incandescent, gas discharge and LED lights are also summarized.
This document provides guidelines for welding duplex and superduplex stainless steels. It discusses joint preparation, preheat and interpass temperature requirements. For root welding, it recommends using TIG with a superduplex filler to ensure corrosion resistance. For filling runs, it describes suitable welding processes like TIG, MMA, MIG, FCAW and SAW. Post weld heat treatment and dissimilar welding combinations are also covered.
Electrofusion installation requires proper training and certification. The document provides guidelines for preparing polyethylene pipe for electrofusion joining, including removing a minimum of 0.007-0.010 inches of outer pipe material using an approved scraping tool. Pipe must be re-rounded if ovality exceeds 5% to ensure proper contact between the pipe and fitting for fusion. The document details power requirements, acceptable markers, cleaning methods, and joining procedures for various electrofusion fitting types. Operators are responsible for only installing fittings in suitable applications and qualifying joints through destructive testing.
Alarm Grid Home Security http://www.alarmgrid.com/ has provided this pdf with the permission and courtesy of Honeywell.
Alarm Grid is a home security product and alarm monitoring company that loves its customers. We have a strong appreciation of the DIY community, and want to make sure that we not only provide the best products and services out there but we also want to make sure that resources like these Honeywell product pdfs are easily accessible so that or curious customers can find what they need when they need it.
Honeywell Vista 15P Honeywell Vista-20P User GuideAlarm Grid
Alarm Grid Home Security http://www.alarmgrid.com/ has provided this pdf with the permission and courtesy of Honeywell.
Alarm Grid is a home security product and alarm monitoring company that loves its customers. We have a strong appreciation of the DIY community, and want to make sure that we not only provide the best products and services out there but we also want to make sure that resources like these Honeywell product pdfs are easily accessible so that or curious customers can find what they need when they need it.
The presentation discusses firefighting techniques. It explains the fire triangle and methods of extinguishing fire by cooling, smothering, or starving the fire of fuel. The success of firefighting depends on well-maintained equipment, training, and using the correct extinguisher for each class of fire. It provides details on different types of fire extinguishers, including CO2, AFFF foam, and DCP dry chemical powder extinguishers. Emergency procedures and contact numbers are also listed. Proper prevention, equipment knowledge, and evacuation drills are emphasized for fire safety.
UPS (Uninterrupted Power Supply) - Power Protection SolutioniTQAN Maju Resources
The document discusses various power problems including power failures, sags, surges, under voltages, over voltages, electrical line noise, switching transients, and harmonic distortion. It describes their causes and effects. It then discusses different ways of solving power problems including generators, automatic voltage regulators (AVRs), and uninterruptible power supplies (UPSs). It focuses on UPS technologies and sizing UPS systems based on equipment loads. The document promotes Powerware UPS systems, describing their advantages such as advanced battery management that doubles battery life.
The Panduit no battery, maintenance-free UPS lowers the risk of downtime, provides lower TCO and features easy integration and remote device management.
UPS is a leading global package delivery and logistics company. It provides delivery services worldwide through its core business of package delivery as well as specialized transportation and logistics services. Some of UPS's unique selling points include excellent customer service, good marketing and advertising. The company engages in various marketing strategies like sponsoring NASCAR teams, advertising on race trucks, and maintaining websites for its different business sectors. Financially, UPS reported $36.6 billion in revenue and daily delivery volumes of over 14 million packages in 2004. The conclusion states that UPS has excellent products and leadership in efficiency, customer service, and global deliveries.
This document summarizes different types of uninterruptible power supplies (UPS). It describes UPS as a standby electrical power source that provides instantaneous backup power in the event of an outage or fluctuation to protect sensitive electronic devices. It discusses three main types of UPS - offline, line interactive, and online - and goes into detail about the components, operation, and benefits of an online UPS system, including the rectifier, battery charger, DC system, inverter, output, and static bypass.
- Fires can start from a combination of oxygen, heat, and fuel. They spread rapidly through chemical reactions.
- Over 2.8 million fires occur in the UK each year, but only 1 in 5 are reported. Fires cause hundreds of deaths annually.
- New legislation was introduced after deadly fires at Woolworths in 1979 and Bradford City Football Club in 1985 to improve fire safety standards.
- Proper fire safety procedures include knowing fire classifications, what to do upon discovery of a fire or hearing an alarm, evacuation routes, and extinguisher use. Training staff and having emergency plans are important.
A 1-day staff Fire Awareness workshop. Presentation is an abstract from an instructor-led session, so certain elements are not fully active; video clips were also contained in the original. A full working version can be obtained from HJA: info@hollandjones.com.
Robust and Reliable Thin-Film OLED EncapsulationBeneq
This document summarizes Beneq's atomic layer deposition (ALD) equipment portfolio and capabilities for thin film encapsulation and OLED applications. Key points include:
- Beneq is a leading supplier of ALD equipment with over 30 years of experience in applications such as thin film electroluminescence displays and moisture barriers.
- Their product line includes batch reactors for R&D and production as well as cluster tools optimized for wafer-scale manufacturing.
- ALD enables ultra-thin, pinhole-free, and flexible moisture barriers due to its precise thickness control and conformality at low temperatures.
- Beneq has numerous customer references for applications such as medical scintillator encaps
Welding is a process that joins metals through heating and melting. There are several types of welding processes including brazing, oxyfuel gas welding, arc welding, MIG welding, TIG welding, resistance welding, and electronic beam welding. Each process varies in how heat is generated and applied. Common welding joints include butt, corner, tee, lap, and edge joints. Weld symbols are used to indicate welding specifications and requirements on technical drawings.
General discussion on classification, uses of stainless steels, various causes for different problems, failures and rejects related to Stainless Steels, analysis, remedies / cures for such defects.
- Lamellar tearing is commonly observed discontinuity in fusion welding that occurs near the heat-affected zone in flange plates of T-butt joints. It is caused by factors like dilution and heat input during welding.
- Dilution is affected by the melted parent metal, melted filler metal, and weld width to depth ratio. Too low or too high heat input can both be detrimental.
- Solidification cracks can form due to the bead factor, which is the ratio of weld width to depth. A ratio greater than 1 or less than 1 can both result in cracks.
Twi cswip welding inspection notes and questionsThang Do Minh
The document discusses the duties of a welding inspector, including visual inspection of welds to identify defects and ensure they meet acceptance criteria. It describes tools that can aid inspection like magnification lenses. It outlines a code of practice for an inspection department, including checking documents, materials, equipment and welder qualifications before welding, monitoring the welding process and variables during welding, and inspecting the final weld for defects, dimensions and heat treatment after welding. Repairs should follow an authorized procedure and be re-inspected upon completion.
This document provides an overview of API 510 exam preparation materials covering service restrictions, joint efficiencies, and radiography requirements in ASME Section VIII. Some key points:
- Welded joints in vessels containing lethal substances must be fully radiographed and the vessel postweld heat treated if carbon/low alloy steel. Category A joints must be Type 1 (double welded) while Categories B-C can be Type 1 or 2.
- Joint categories define joint locations (e.g. longitudinal, circumferential). Type defines joint construction (e.g. double welded, single welded).
- Radiographs must show a minimum penetrameter image and identify unacceptable imperfections over certain size thresholds
This document discusses various weld defects including geometric defects like misalignment and metallurgical defects like cracks, porosity, and embrittlement reactions. It explains the causes and remedies for different types of defects such as angular distortion, longitudinal distortion, incomplete fusion, cracks, and porosity. The document also covers residual stresses during welding, gas dissolution and solid solution hardening, hydrogen effects including hydrogen embrittlement and cracking, and common weld testing methods like tension tests, bend tests, hardness tests, and non-destructive tests including visual inspection, liquid penetrant, magnetic particle, x-ray and ultrasonic testing.
Piping & piping materials redefinedShrenik Baid
Piping systems are used to transport fluids from one location to another. They include pipes, fittings, flanges, valves, insulation and other components. Selection of piping materials depends on factors like resistance to corrosion, strength, pressure and temperature. Common pipe materials include carbon steel, stainless steel, plastic and concrete. Flanges with gaskets and bolts are used to join pipes. Valves like gate valves, globe valves and check valves control and direct fluid flow. Insulation helps maintain temperature and protects piping. Proper selection and design of piping systems is important for safety and efficiency of industrial operations.
A review of effect of welding and post weld heat treatment on microstructure ...eSAT Journals
Abstract
Today getting high thermal efficiency in thermal and nuclear power plant is a big challenge. Many new material are developed. SA 335 grade 91 steel is modified high chrome-moly martenstitic steel. This material is having excellent toughness and high temperature creep strength. During welding, this material is having tremendous change in its microstructure and hence mechanical property. Many research works were done in this area. This paper discusses weld ability of P91 material. Effect of different welding process, type of filler wire, its chemical composition and type of flux is discussed in this paper. PWHT is necessary after welding of P91 steel. PWHT temperature and its duration affects phase transformation and mechanical properties of weld metal, HAZ and parent metal. Major focus is given on hardness, creep resistance and notch toughness.
Keywords - P91, Welding, Microstructure, Toughness, Creep, Hardness, PWHT
The document provides specifications for various pipe fittings and flanges including malleable fittings, black and galvanized steel fittings, unions, and stainless steel fittings. It includes information on materials, dimensions, threading, finishes, pressure ratings and stock ranges for items like elbows, tees, caps and flanges. Standard carbon steel flanges are covered along with temperature and pressure ratings for carbon and alloy steel flanges per Australian standards.
Surgical lighting in operation theatreAmol Gaikwad
This document discusses surgical lighting in operating theatres. It covers topics like the importance of lighting for surgeons' vision, factors to consider when selecting lighting like adjustability, brightness and control. It describes technical specifications of lighting like lux levels, color rendition, color temperature, and depth of illumination. Norms and requirements for surgical lights set by IEC are outlined, including the need for homogeneous light, minimum lux levels and color rendering. Different configurations for surgical lights like ceiling-mounted, wall-mounted and floor standing are briefly explained. Lamp technologies including incandescent, gas discharge and LED lights are also summarized.
This document provides guidelines for welding duplex and superduplex stainless steels. It discusses joint preparation, preheat and interpass temperature requirements. For root welding, it recommends using TIG with a superduplex filler to ensure corrosion resistance. For filling runs, it describes suitable welding processes like TIG, MMA, MIG, FCAW and SAW. Post weld heat treatment and dissimilar welding combinations are also covered.
Electrofusion installation requires proper training and certification. The document provides guidelines for preparing polyethylene pipe for electrofusion joining, including removing a minimum of 0.007-0.010 inches of outer pipe material using an approved scraping tool. Pipe must be re-rounded if ovality exceeds 5% to ensure proper contact between the pipe and fitting for fusion. The document details power requirements, acceptable markers, cleaning methods, and joining procedures for various electrofusion fitting types. Operators are responsible for only installing fittings in suitable applications and qualifying joints through destructive testing.
Alarm Grid Home Security http://www.alarmgrid.com/ has provided this pdf with the permission and courtesy of Honeywell.
Alarm Grid is a home security product and alarm monitoring company that loves its customers. We have a strong appreciation of the DIY community, and want to make sure that we not only provide the best products and services out there but we also want to make sure that resources like these Honeywell product pdfs are easily accessible so that or curious customers can find what they need when they need it.
Honeywell Vista 15P Honeywell Vista-20P User GuideAlarm Grid
Alarm Grid Home Security http://www.alarmgrid.com/ has provided this pdf with the permission and courtesy of Honeywell.
Alarm Grid is a home security product and alarm monitoring company that loves its customers. We have a strong appreciation of the DIY community, and want to make sure that we not only provide the best products and services out there but we also want to make sure that resources like these Honeywell product pdfs are easily accessible so that or curious customers can find what they need when they need it.
The presentation discusses firefighting techniques. It explains the fire triangle and methods of extinguishing fire by cooling, smothering, or starving the fire of fuel. The success of firefighting depends on well-maintained equipment, training, and using the correct extinguisher for each class of fire. It provides details on different types of fire extinguishers, including CO2, AFFF foam, and DCP dry chemical powder extinguishers. Emergency procedures and contact numbers are also listed. Proper prevention, equipment knowledge, and evacuation drills are emphasized for fire safety.
UPS (Uninterrupted Power Supply) - Power Protection SolutioniTQAN Maju Resources
The document discusses various power problems including power failures, sags, surges, under voltages, over voltages, electrical line noise, switching transients, and harmonic distortion. It describes their causes and effects. It then discusses different ways of solving power problems including generators, automatic voltage regulators (AVRs), and uninterruptible power supplies (UPSs). It focuses on UPS technologies and sizing UPS systems based on equipment loads. The document promotes Powerware UPS systems, describing their advantages such as advanced battery management that doubles battery life.
The Panduit no battery, maintenance-free UPS lowers the risk of downtime, provides lower TCO and features easy integration and remote device management.
UPS is a leading global package delivery and logistics company. It provides delivery services worldwide through its core business of package delivery as well as specialized transportation and logistics services. Some of UPS's unique selling points include excellent customer service, good marketing and advertising. The company engages in various marketing strategies like sponsoring NASCAR teams, advertising on race trucks, and maintaining websites for its different business sectors. Financially, UPS reported $36.6 billion in revenue and daily delivery volumes of over 14 million packages in 2004. The conclusion states that UPS has excellent products and leadership in efficiency, customer service, and global deliveries.
This document summarizes different types of uninterruptible power supplies (UPS). It describes UPS as a standby electrical power source that provides instantaneous backup power in the event of an outage or fluctuation to protect sensitive electronic devices. It discusses three main types of UPS - offline, line interactive, and online - and goes into detail about the components, operation, and benefits of an online UPS system, including the rectifier, battery charger, DC system, inverter, output, and static bypass.
- Fires can start from a combination of oxygen, heat, and fuel. They spread rapidly through chemical reactions.
- Over 2.8 million fires occur in the UK each year, but only 1 in 5 are reported. Fires cause hundreds of deaths annually.
- New legislation was introduced after deadly fires at Woolworths in 1979 and Bradford City Football Club in 1985 to improve fire safety standards.
- Proper fire safety procedures include knowing fire classifications, what to do upon discovery of a fire or hearing an alarm, evacuation routes, and extinguisher use. Training staff and having emergency plans are important.
A 1-day staff Fire Awareness workshop. Presentation is an abstract from an instructor-led session, so certain elements are not fully active; video clips were also contained in the original. A full working version can be obtained from HJA: info@hollandjones.com.
Fire fighting, types of fires, types of fire extinguishers, building management systems, sprinkler systems, heat and smoke sensors.
http://www.greenarchworld.com/
The document discusses key aspects of an effective fire prevention program, including life safety, property protection, and continuity of operations as primary goals. It describes the fire triangle of fuel, heat, and oxygen and strategies to control or isolate these elements. The document provides guidelines for good housekeeping, safe storage of flammables and combustibles, and identifies electrical hazards. It emphasizes the importance of compartmentalization through proper maintenance of fire barriers such as walls, doors, and dampers.
This document provides information on fire alarm panels, detectors, and accessories for conventional and 2-wire fire alarm systems. It describes the components, including panels with various zone and circuit capacities, smoke and heat detectors, sounders, call points, and accessories. Diagrams show typical wiring for conventional and 2-wire system configurations.
The document describes the Fire-Lite InnovairFlex D355PL(A) and DNRW intelligent non-relay photoelectric duct smoke detectors. The detectors feature a pivoting housing that fits both square and rectangular ducts and can mount to round or rectangular ducts. The DNRW model has a NEMA-4 rating making it watertight and UV resistant for extreme environments. The detectors operate in airflows from 100-4000 feet per minute, temperatures from -4°F to 158°F, and humidity from 0-95%. Accessories include remote test stations and accessories for visible and audible annunciation.
The 5881ENHC RF Receiver is designed to work with 345 MHz transmitters for commercial fire and burglary systems. It features a spatial diversity system to eliminate signal "nulls" and features front and back tamper protection for installations. The receiver connects to control panels via the keypad bus and is compatible with Honeywell 5800 series wireless devices and control panels.
This document provides an overview of basic fire alarm system training. It defines a fire alarm system as a system that monitors fire alarm or supervisory devices and initiates an appropriate response. It describes the basic components of a fire alarm system including the control panel, communications methods, initiating devices like smoke detectors, and notification appliances like horns and strobes. It also discusses relevant codes and standards like NFPA 72 and requirements for fire alarm systems in buildings based on use and occupancy.
The document describes the MMF-300-10 ten-input monitor module, which interfaces between a control panel and normally open contact devices. It has ten addressable inputs that can be used for devices like pull stations, contacts, or flow switches. Each input has a status indicator and the module mounts in different cabinet options. It operates in either Class A or Class B and has features like removable terminal blocks and the ability to disable unused addresses.
The document discusses considerations for designing wireless networks in warehouse environments. It describes the unique challenges of warehouses, including tall ceilings, shelving that can block signals, temperature extremes, and changing layouts and inventory levels. It provides guidance on planning deployments, including surveying the space, matching access point power to client capabilities, using low-gain downtilted antennas for vertical coverage, and designing for coverage reliability despite changing conditions. Troubleshooting tips include checking for changes in AP power levels, antenna aiming, stock levels, or the wireless environment.
This document provides information on the XAL-53 hazardous location pull station. It can be used in areas with flammable gases, vapors, dusts or fibers. The pull station has a copper-free aluminum enclosure with conduit openings. It provides normally open and closed contacts and is activated by lifting the cover and pulling the ring. The pull station is suitable for Class I, II and III hazardous locations and requires occasional maintenance like lubrication and keeping surfaces clean. It is UL, ULC and CSA listed.
The InnovairFlex D4120 duct smoke detector features a flexible housing that fits both square and rectangular ducts. It operates in air velocities from 100 to 4,000 feet per minute and temperatures from -4°F to 158°F with 0-95% humidity. The plug-in sensor head offers improved false alarm immunity and maintenance. Up to 50 detectors can be interconnected to isolate the fire source location.
The InnovairFlex D2 2-wire photoelectric duct smoke detector has a pivoting housing that fits both square and rectangular ducts. It senses airflow from 100-4,000 feet per minute and has improved resistance to false alarms. The detector's modular design simplifies installation and maintenance in harsh duct environments. Accessories include remote test stations and annunciators for flexible system integration.
The All New DigiFact IP Network Speaker Microphone Series Paul Kersh
The DigiFact Series are ONVIF compliant two-way IP Speaker Microphones that harness the value of networked audio monitoring technologies which analyze and bi-directionally stream audio. These wide dynamic range audio devices deliver a broad frequency response capable of picking up low-and-high frequency sounds. DigiFact® speaker microphones are available in a variety of speaker sizes, applicable to a wide-range of deployment scenarios.
Polycom sound station ip3000 data sheetbest4systems
The Polycom SoundStation IP 3000 is a VoIP conference phone that provides acoustic clarity and 360-degree room coverage. It supports various VoIP protocols and can be used with IP-PBXs or softswitches. Key features include full duplex speakerphone capability, support for G.711 and G.729a codecs, and software upgradability over Ethernet.
E2S is a leading manufacturer of warning signals with 25 years of experience. They produce a wide range of audible and visual hazard warning products for use in hazardous environments. Their product range includes intrinsically safe, flameproof, and non-sparking signals designed for gas and dust environments, as well as wide area warning systems for disaster situations. E2S aims to deliver dependable warning signals combining the latest technology with robust design and quality manufacturing.
Aditgroup present the different fire alarm detector for the security purpose. Here user gets the Duel Heat detector, Manual call point, Smoke Alarm, Optical smoke detector etc.
VinTALK's redundant Class IV IP-PBX call platform is located at a state-of-the-art colocation facility in San Diego, California which houses VinTALK's switching equipment and network interconnections to deliver high quality voice services. The network infrastructure includes connections to customer T-1 lines, voice switches to process calls between VinTALK customers and other networks, and interconnections to the public telephone and internet networks. Key infrastructure at the data center provides redundancy of power, air conditioning, call platform servers, internet providers, switches, and equipment to ensure 99.999% uptime.
Central stations that receive monitoring signals from multiple alarm companies can spread costs across companies, keeping monitoring costs lower than if serving a single company. Upon receiving an alarm, the central station dispatches authorities according to written instructions for that account. Fire alarm signals take priority and must be processed within 90 seconds of receipt. Central stations can obtain certifications for monitoring fire and burglar alarm systems up to high security grades. Backup systems and power are required to ensure no loss of signal.
Similar to Ul864 9th Edition Web Presentation (16)
1. UL Code 864 9th Edition
An Overview of the Foremost Code
Updates
2. 9th Edition of UL 864, ANSI/UL 864
•Note that UL 864 is
an ANSI standard.
•ANSI is national
Latest Norm.
incarnation of •ANY NRTL can
a standard certify.
first •FM and UL are
published in equivalent
1948
HONEYWELL - CONFIDENTIAL File Number
3. UL 864 9th Edition
• When published in October 2003 the 9th edition
had an effective date of October 31, 2005
• Three subsequent extensions by UL has moved the
effective date to June 30, 2007
• UL no longer accepts products for certification to
the 8th edition
HONEYWELL - CONFIDENTIAL File Number
4. Ground Fault Supervision
June 30, 2007 December 31, 2007
• Ground faults are no longer just a short to ground
• Manufacturer specifies the amount of leakage to ground and UL
tests to verify the trip point
• Wiring installation workmanship is very important!
HONEYWELL - CONFIDENTIAL File Number
5. Products installed in Air-handling Spaces
June 30, 2007
• This is an issue particularly for speakers and associated wiring
HONEYWELL - CONFIDENTIAL File Number
6. Devices Installed in an Outlet Box
June 30, 2007
• You can not just lay a device in an outlet box!
HONEYWELL - CONFIDENTIAL File Number
7. Wiring the Fire Alarm
June 30, 2007
• It is vital that the installer follow minimum wire gage size specified
in the installation wiring diagram
HONEYWELL - CONFIDENTIAL File Number
8. Alarm Signal Processing Time
• This is a major change from 90 seconds that has been the requirement
for fire for more than 30 years
HONEYWELL - CONFIDENTIAL File Number
9. Trouble Signal Processing Time
• Trouble signal process time remains essentially unchanged
• Provision is now made to delay transmission of a battery trouble to
avoid overloading the central station when an area loses power
HONEYWELL - CONFIDENTIAL File Number
10. Alarm and Trouble Signals Annunciation
• Voice systems must have a command center and this location
must indicate all alarm and trouble signals for the system.
0 HONEYWELL - CONFIDENTIAL File Number
11. Visual Signal Annunciation at the Control
Can be a hold-up alarm!
1 HONEYWELL - CONFIDENTIAL File Number
12. Alarm Signaling
• This is the “Temporal Three”
• Synchronization introduces new complexities in the 9th edition
- Compatibility is a critical issue
- Current calculations and wire size are critical
- Power supply loading
• Note the exception – The whole alarm system does not need to be
synchronized!
2 HONEYWELL - CONFIDENTIAL File Number
13. Supervisory Signals
• Supervisory Signals must be distinctly different than trouble
signals. This calls for a separate device to be used unless the
sounder can make different sounds.
• Note supervisory signals generally do not latch
3 HONEYWELL - CONFIDENTIAL File Number
14. Voice Alarm Command Center
• Controls Active LED on all ONYX panels
4 HONEYWELL - CONFIDENTIAL File Number
15. Emergency Voice/Alarm Function Sequence
• This is consistent with NFPA 72
• Some major communities (i.e. Chicago) follow a different
sequence
• It is vital to be familiar with the local “High Rise Code”
5 HONEYWELL - CONFIDENTIAL File Number
16. Fire Warden Telephone Circuit
• The Telephone circuit must be supervised for opens, shorts
and grounds.
• In today’s environment, communications for the fire service
personnel is a vital function.
6 HONEYWELL - CONFIDENTIAL File Number
17. Operation Time Requirements
• Operating time requirements are greatly changed from the 8th
Edition of UL’s 864 Code.
• Operating time for alarm and supervisory annunciation
reduced to 10 seconds from 90.
• Trouble signals remain at 200 seconds.
7 HONEYWELL - CONFIDENTIAL File Number
18. Releasing Device Service
• False tripping of a releasing device circuit, besides being an
expensive mishap, can be very dangerous.
• This requirement specifically addresses a situation when the
alarm panel is being serviced.
8 HONEYWELL - CONFIDENTIAL File Number
19. Networked Releasing Device Panels
• Concern for false dumps carries over to networked systems.
• If multiple systems can trigger a dump in the same system, the
status of any panel on the system must be annunciated at the
other panels connected to the system.
9 HONEYWELL - CONFIDENTIAL File Number
20. Pre-Discharge Notification
• Releasing device control panels must provide a predischarge
warning to alert the building occupants.
0 HONEYWELL - CONFIDENTIAL File Number
21. Temporal Three
• Note the panel must have the capability of Temporal Three
• Some municipalities do not permit the Temporal Three;
therefore, the requirement is one must have the capacity.
1 HONEYWELL - CONFIDENTIAL File Number
23. Abort Switches
• Abort Switches must be manually-operated.
• Abort Switches must be self-restoring.
• Abort Switches must NOT be used with pre-action or deluge
water systems.
3 HONEYWELL - CONFIDENTIAL File Number
24. Abort Switch Circuit Supervision
• The abort switch circuit must meet the supervision and style
requirements applicable to initiating circuits.
4 HONEYWELL - CONFIDENTIAL File Number
25. Abort Switch Operation
• Operation of the abort switch during a fire alarm requires a
distinctive visual and audible trouble signal.
• The visual indicator must be dedicated to the abort function.
• The audible may be the control panel common trouble sounder
or a dedicated audible
5 HONEYWELL - CONFIDENTIAL File Number
26. Manual Release Switch
• Manual release switch must override all delays except manual
release delay period
• Release must occur within 30 seconds
• The manual abort switch is not required to override the manual
release switch. This can be a programming function.
• Operator’s manual must specify if manual override is provided.
6 HONEYWELL - CONFIDENTIAL File Number
28. Protected Premise Controls Timing # 2
• Report time can be 1 minute to 4 hours based on FCC regulations.
• Battery trouble signal shall be transmitted within 4 hours.
• Battery trouble signal shall be transmitted for 7 days.
• Immediate local annunciation.
• Transmission of signal within 60 to 180 minute delay.
• Immediate local annunciation.
• Transmission over working path within 4 minutes.
8 HONEYWELL - CONFIDENTIAL File Number
29. Protected Premise Signal Annunciation
• If the signals sent to a remote supervisory station do not
include zone information for a multi-zone panel, zone
information must be indicated at the panel.
• If indication is not lamp per zone, it must include:
- Signal prioritization
- Indication by type
- Indication by zone
9 HONEYWELL - CONFIDENTIAL File Number
30. Digital Radio Alarm Transmitters
• “Mechanically protected” means conduit
• If the transmitting antenna of transmitter/antenna combination
are remote, conduit is required
0 HONEYWELL - CONFIDENTIAL File Number
31. DACT Dual Line Requirement
• Requirement includes:
- Indication of fault subscriber location
- Can not inhibit other subscriber
- Faults include single open, ground, wire-to-wire short & noise
- Signal restoration of service
- Fault condition and restorations must be annunciated at the
supervising station within 200 seconds
1 HONEYWELL - CONFIDENTIAL File Number
32. New Transmission Technologies
• NFPA 72, including the 2007 edition, is basically a prescriptive
standard
• Each technology is treated differently
- There is no correlation between technologies
- Technologies are not rated as to their strength
• NFPA technical committee recognized this limitation and
created the Other Technologies Transmission section
• This is where Internet based requirements originated
2 HONEYWELL - CONFIDENTIAL File Number
33. Time to transmit an alarm signal
• The “10 seconds” applies to all signal processing at the
protected premise.
• Trouble annunciation or signal retransmission remains at 200.
3 HONEYWELL - CONFIDENTIAL File Number
34. Multi Zone Systems
Note: Burglar
A holdup Alarm
alarm can
have same
priority as
fire
4 HONEYWELL - CONFIDENTIAL File Number
35. Component Reliability
• In 8th edition, 50% derating was required.
• In 9th edition, 864 adopts a process first introduced in UL217.
• This change permits more design flexibility.
5 HONEYWELL - CONFIDENTIAL File Number
36. Software
• Software has become a major concern.
• It is critical that the A&E and installer be familiar with the
programming function.
• It is particularly critical that each of the programming options be
understood with regard to standard compliance.
6 HONEYWELL - CONFIDENTIAL File Number
37. Software compliance with the standard
• Software has made possible the concept of a universal panel.
• All features and options may not be compliant with UL 864 or
NFPA 72.
• It is vital that the A&E review the options selected to assure
compliance.
7 HONEYWELL - CONFIDENTIAL File Number
38. Executive Software tracking
• Knowing the Rev. level of the software is very important
particularly when a problem occurs.
8 HONEYWELL - CONFIDENTIAL File Number
39. User Access and Programming
• Mapping of output circuits is permitted.
• Mapping input circuits to supervising station is not permitted.
• The executive program does automatic mapping of critical
functions.
9 HONEYWELL - CONFIDENTIAL File Number
40. Combination Systems
• Anything non-fire connected to a fire alarm system can not
cause any degradation of supervision or alarm functions.
• Testing is conducted by placing opens, shorts, grounds on
these circuits to verify NOTHING has been compromised.
0 HONEYWELL - CONFIDENTIAL File Number
41. Interconnected Fire Alarm Control Units
• This is a concern for A&E and Installer - how and where you
install is very important.
• Unless you can see the displays on all of the alarm panels at
the same time, ALL panels must concurrently display:
- Alarm
- Supervisory
- Trouble
- Reset
- Alarm Silence
- Trouble Silence
1 HONEYWELL - CONFIDENTIAL File Number
42. Power Supply Capacity
• The power supply shall be capable of operating the system
under full load with supply voltage at 85% of rated with battery
disconnected.
• The system must be capable of fully charging the battery when
the supply voltage is reduced to 85% (or transfer voltage) of
rated voltage.
2 HONEYWELL - CONFIDENTIAL File Number
43. Notification Appliance Circuits
• Compatibility of Notification Appliances with specific panels
is now critical
• Voltage calculations are very important-one can’t add just
one more device
• Synchronization is a critical factor as the steady-state load
can be very much less then the peak load
• Great care must be taken in selecting notification appliances
for use with a particular panel.
• The panel installation instructions and wiring diagrams are
your primary guide.
3 HONEYWELL - CONFIDENTIAL File Number
44. Rating Designations
• All NAC circuits must be identified by one of these designations
• All NAC circuits must operate within the specified voltage range
• Note the special application category
4 HONEYWELL - CONFIDENTIAL File Number
47. Regulated NAC Surge Current Loading
• Loading for first surge is 10X steady state rating of circuit
• Loading for repetitive surges is 5X steady state rating
7 HONEYWELL - CONFIDENTIAL File Number
48. Special Application Surge Current Loading
• Only devices specified in the panel installation documentation
are permitted!
8 HONEYWELL - CONFIDENTIAL File Number
Editor's Notes
The first edition of UL 864 was published in 1948. The first 8 editions were developed through the IAC Industry Advisory Committee process. The 9 th edition was published through the STP Standards Technical Panel process. UL 864 9 th edition is an ANSI standard. This means it is a “National Norm” Third party certification to this standard is a strong test of due diligence. Any NTRL OSHA designated “National Recognized Test Laboratory” can certify to UL 864. FM and UL are most recognized in fire alarm
The 9 th edition was published in October 2003 with a two year effective date of October 31, 2005 The effective date is a UL term specifically relating to their condition of certification. Other NRTLs may choose a different effective date that could be immediate or some future date. It is a matter of internal process UL extended their effective date three times and now designates June 30, 2007 as the date. UL no longer accepts new submittals to the 8 th edition. But will process revisions for some component substitutions. As of June 30, 2007 Notifier will no longer ship 8 th edition products Notifier will continue to support the existing installed base of 8 th edition products.
Ground fault supervision is no longer limited to a short to ground. Leakage current to ground is now monitored. Wiring neatness is more important then ever
This is part of the requirement in NFPA 72 that “the equipment shall be listed for the application”
The 90 seconds was established about 1970 when the Digetor 1000 the first multiplex system was listed by UL That system used a motorized arm to sweep a set of contacts. Today’s electronics can easily handle this tine to process requirement
The change to the priority sequence is very significant. For the first time there is recognition that fire is not the only event that can be life threatening.
Compatibility of Notification appliances horns and strobes is now more complicated You need to be concerned about synchronization protocol You need to be concerned weather the NAC circuit is or is not regulated. If not regulated only the devices specified in the control unit documentation is compatible. Current calculations is critical!
Requirement is Sound the alarm Alert tone and voice message Manual capability to activate zones with alarm signal. In Chicago the requirement is: Flash the strobes Fire department personnel will manually activate an alarm signal
This requirement appears several times in the 9 th edition of UL 864
Deactivated releasing zones must be indicated by individual visual indicators When zones are deactivated during normal condition, an audible trouble signal is required Oferation of the deactivation switch shall not result in restoration of the HVAC system
Once again 10 seconds is the majic number for alarm signal annunciation Note that the 10 is applicable to the start of off-premise signal transmission
This timing sequence is intended to prevent overwhelming the remote receiving center.