Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Tagging Philosophy for Junction Box, Cable, and Cable Drum
Share
Notification Show More
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Instrumentation Design > Tagging Philosophy for Junction Box, Cable, and Cable Drum

Tagging Philosophy for Junction Box, Cable, and Cable Drum

In this article, we are going to discuss the tagging philosophy for junction boxes, cables, and cable drums.

Last updated: October 17, 2023 3:42 pm
Editorial Staff
Instrumentation Design
No Comments
Share
4 Min Read
SHARE

Tagging of the junction box, cables, and cable drums is very important during front-end engineering design for the preparation of the JB schedule, cable schedule, cable drum schedule, etc.

Contents
Junction Box TaggingUnit NumberJunction Box CodeJunction Box ScheduleCable TaggingField Instrument to Junction BoxJunction Box to Control RoomCable ScheduleInstrument Cable Drum TaggingCable CodeCable Drum Schedule

In this article, we are going to discuss the tagging philosophy for junction boxes, cables, and cable drums.

Junction Box Tagging

Junction Box Numbering

The given above is the basic structure of junction Box tagging philosophy

It includes,

  • Unit Number
  • Junction Box Code
  • Sequence Number

Unit Number

Refer to the below article for details regarding the unit number

Instrument Numbering Philosophy

Junction Box Code

Each junction box is associated with an instrumented facility comprising of a series of letters depicting that junction box details based on the type of signals.

Below table indicates some of the junction box types

LETTERTYPE OF SIGNAL
JBAAlarm (BPCS)
JBEAnalogue (BPCS)
JBSControl – Solenoid Outputs (BPCS)
JBFFFieldbus Foundation (BPCS)
JBAXAlarm (SIS)
JBEXAnalogue (SIS)
JBSXControl – Solenoid Outputs (SIS)
JBAFAlarm (F&G)
JBEFAnalogue (F&G)
JBPFPower (F&G)

Also Read: Instrumentation Project Documents

Junction Box Schedule

Junction Box Schedule

Reference drawings required for the preparation of the JB Schedule are

  • Specifications for instrument junction boxes
  • Specifications for cable glands
  • Instrument cable schedule
  • Junction box tagging philosophy

Cable Tagging

The below discussed the different ways where we used the cable tagging.

Field Instrument to Junction Box

Individual cables running between field instruments and junction boxes are normally identified by the instrument tag number itself.

Example:

Field Instrument Unit Number

Junction Box to Control Room

The below image shows the basic structure of cable tagging for cables from the junction box to the control room.

Basic Structure of Cable Tagging for Cables

It includes,

  • Unit Number
  • Junction Box Code
  • Sequence Number of Cable
  • Cable Suffix

Cable Schedule

Signal Cable Schedule

Reference drawings required for the preparation of the cable schedule are

  • Instrumentation Index
  • Cable Tagging Philosophy
  • Cable and Junction Box Specification
  • Instrumentation Design Basis 

Instrument Cable Drum Tagging

Instrument Cable Drum Tagging

Given above is the basic structure of the Instrument cable drum numbering system.

It includes,

  • Zone
  • Cable Drum Number
  • Sub-Contractor Name
  • Cable Code
  • Sequence Number

Cable Code

Cable code indicates all details regarding that cable type. There is always a description associated with each cable code.

Given below is an example of cable type and description

Cable Code

Zone details and subcontractor details are entered as per the project execution details.

Cable Drum Schedule

Cable Drum Schedule

Reference drawings required for the preparation of cable drum schedule are,

  • Specification for Instrument Cables
  • Cable Drum Tagging Philosophy
  • Instrumentation Design Basis
  • Instrument Cable Schedule
  • Instrument Index
  • Fire & Gas Index

Author: Greeshmesh TP

If you liked this article, then please subscribe to our YouTube Channel for Instrumentation, Electrical, PLC, and SCADA video tutorials.

You can also follow us on Facebook and Twitter to receive daily updates.

Read Next:

  • SIL Verification
  • How to Choose UPS?
  • Instrument Junction Box
  • Instruments Tapping Points
  • Instrumentation Design Engineer
Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Float-type Level Switch to Control a pump
Air Cylinder Consumption Calculation for Control Valves
How do You Select a Pressure sensor?
How to Select a Pressure Gauge
How to Calculate Heat Load in Electrical/Electronic Panel Enclosure
What are Impulse Lines? – Impulse Line Problems & Solutions
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
Leave a Comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
208kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

Instrumentation and Control (I&C) Design
Instruments Tapping Points – Common versus Individual
Interface Level Measurement Selection Guide
Instrumentation and Control Project Packages – Detail Engineering
Design Considerations of Orifice Plate
How to Avoid Process Downtime ?
How to Select a Directional Valves
Load Cell Design

Keep Learning

heated instrument enclosures

What is Instrument Heated Enclosure or Protection Box?

Instrument Numbering Philosophy

Instrument Numbering Philosophy

LCS Configuration equipped with LOTO Facility

Motor Control Signal Interface

Transmitter Performance and Calibration Frequency

How to Calculate Transmitter Performance and Calibration Frequency?

Important Factors Consider during Piping Design

Important Factors Consider during Piping Design

Testing of Pneumatic Systems

Testing of Pneumatic Systems

Control Valve Packing

Control Valve Packing

Cable Tray Routing

Cable Routing

Learn More

Cut-outs between Platforms or Grating for Field Instruments

Cut-outs between Platforms or Grating for Field Instruments

Siemens Tia Portal PLC Training Course

Siemens Tia Portal PLC Training Course

Leaking Plug Valves pose Safety Hazards and Lead to Plant Shutdown

Leaking Plug Valves Pose Safety Hazards and Lead to Plant Shutdown

Parallel Operation of Alternators

What is a Fieldbus?

How to Connect HART Communicator with DP Transmitter

15 HART Communicator Questions

Potentiometer Animation

Potentiometer Working Principle Animation

Proportional only Control Theory

Proportional-only Control Theory

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?