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Angel Parrales

@angelparrales

Instrumentation, Safety Systems, Engineering

90 followers 11 following 50 posts Reputation 25.93

Angel Parrales
@angelparrales May 16, 2018, 2:40 PM UTC

FIRE ALARM SYSTEMS 6-MAINTENANCE

BACKGROUND For reliable functioning of Fire Alarm System a periodic test program is crucial. It is clear that testing cannot prevent failures but rather help on identifying failures so reducing downt…

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Angel Parrales
@angelparrales Apr 16, 2018, 3:40 PM UTC

FIRE ALARM SYSTEMS 5-STANDARDS DEFINITIONS

DEFINITIONS Approved: means acceptable to the authority having jurisdiction Authority Having Jurisdiction: is the organization, office or individual responsible for approving. Labeled: equipment or m…

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Angel Parrales
@angelparrales Apr 9, 2018, 11:23 PM UTC

FIRE ALARM SYSTEMS 4-DOCUMENTATION

IMPORTANCE These documents are the construction contract, which governs the rights, duties and liabilities of the contractor who performs the work, the organization for whom the work is executed and…

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Angel Parrales
@angelparrales Apr 5, 2018, 1:15 AM UTC

ULTRASONIC GAS DETECTORS

Instant detection of gas leaks can be achieved using ultrasonic detection. Ultrasonic detection technology has been around for decades and used in machinery and equipment inspection tasks. Applicabil…

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Angel Parrales
@angelparrales Apr 2, 2018, 12:29 PM UTC

FIRE ALARM SYSTEMS 3A-PERFORMANCE BASED DESIGN

This method proposes an approach to design a system such as can detect a growing fire before it reaches certain heat release level, is not applicable to smoldering fires. It is based on modify the li…

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Angel Parrales
@angelparrales Mar 31, 2018, 12:28 PM UTC

SHODO Kanji Balance

Character THREE (三) is a basic example of brush stroke balance. Relationship between lines length, width, orientation and spacing is what brings beauty to any work, regardless of kanji complexity. &g…

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Angel Parrales
@angelparrales Mar 29, 2018, 4:24 PM UTC

INFRARED COMBUSTIBLE GAS DETECTOR

The Infrared (IR) method of measuring gas concentration is based on the absorption of IR radiation at certain wavelengths as the radiation passes through a volume of the gas. There is an excellent wh…

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Angel Parrales
@angelparrales Mar 28, 2018, 9:32 PM UTC

Digital Certificates and Credentials - ALTERNATIVE USE OF BLOCKCHAIN

This post is NOT about money. Our fellows at University of Nicosia (Cyprus) and its Blockchain Initiative innovated the issuance of certificates for their student by using (of course) the blockchain…

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Angel Parrales
@angelparrales Mar 27, 2018, 6:12 PM UTC

Fire and Gas System performance is not as SIS?

Fire and Gas Systems (FGS) are mitigation methods, this mere fact has brought an never-ending controversy about applicability of safety systems codes and standards to FGS, given that SIS operates as…

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Angel Parrales
@angelparrales Mar 26, 2018, 1:18 PM UTC

FIRE ALARM SYSTEMS 3-DESIGN

Engineering design is a well structured method to plan and perform every activity to get an proper and effective fire alarm system. This is paramount when it comes to protect life, assets and environ…

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