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An overview of the electronic work permit system in use at the ISAC facility ISAC Electronic Work Permit System Rob Shanks, TRIUMF, Vancouver CANADA, roberts@t 1
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An overview of the electronic work permit system in use at the ISAC facility
ISAC Electronic Work Permit System
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
History
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
98 – 2001:Paper permit system in use based on previously existing system
2001: Switched to electronic permit system designed by co-op student Wendy
Wiggins
01 – present: Electronic permit system in use at ISAC facility to schedule and catalogue
all work done on commissioned systems
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Motivation
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Database structure allows for very rapid searches of the archived permits with queries that can be fully customized
Motivation
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Database structure allows for very rapid searches of the archived permits with queries that can be fullycustomized
Web-based interface facilitates remote access to the permit system
Remote access improves ease of use and conveniencefor users and reduces traffic in the control room
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Database containing all permit and user information
Interactive, web-based interface
Support Applications
Designed with scheduled maintenance periods in mind
Structure of the ISAC WPS
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Database
UserInterface
SupportApplications
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Structure of the ISAC WPS
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Interface:
Interacts with the database based on input from user
Used for viewing, writing and editing of permits
Provides several admin functions not directly associated with permits
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Structure of the ISAC WPS
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Input from the user must be simple
Calculations should beautomated whereverpossible
Default selections can save time but can also be dangerous
Familiar look and feel can make the transition to any new system easier
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Structure of the ISAC WPS
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Electronic form was based on existing paper system
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Permits receive a unique id as soon as they are submitted as Pending
Id includes the current date and a number that is incremented for each permit
Increment begins at 1 each day
Pending permits are distinguished from other permits by a negative number
This simple system allows a fair amount of information to be conveyed at a glance
Permit Numbering
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Status indicates progress of job– Pending– Active– Completed– Closed
Certain statuses require approvals first Area Supervisor Safety Operations
Permit Status &Permissions
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
●Log in required for actions affecting database
●Strong constraints on input to database
●Different user types with specific privileges
Security: Managing DB Integrity
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Rigorous testing of computer code prior to release
Maintain a schedule for software upgrades and bug fixes
Security: Managing DB Integrity
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
The cron utility is an easy way to run tasks with scheduled frequencyBackups of database contentUpdates of user email and password listsWeekly notices to users and administrators
An ideal system would be one where WPS and other such electronic applications are able to communicate between each other. This would help eliminate duplication of information by users.
ex. A permit being filled out in response to a fault report.
Support Applications
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Change of programming language– Database: MySQL --> PostgreSQL– User Interface: PHP --> Perl
Improve Area/System differentiation
More extensive use of user qualifications
Integration of WPS with other electronic utilities such as log book, fault reports, etc.
Site-wide adoption of electronic system
What Does the Future Hold?
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
Based on paper permit system already in use on site
Consists of Database, user interface and support utilities
Security achieved through access control and user privilege levels
Constantly developing
Summary
Rob Shanks, TRIUMF, Vancouver CANADA, [email protected]
