Guidelines pull from existing standards in other industries to help drilling contractors assess alarm functionality, prioritization, management of change
By Alex Endress, Editorial Coordinator
The IADC Drilling Control Systems (DCS) Subcommittee under the Advanced Rig Technology (ART) Committee is developing a set of alarm management guidelines for the drilling industry. “We are suggesting that drilling contractors, land and offshore, have an alarm philosophy in place that is appropriate for the drilling control systems and inventory on their rigs,” said Christopher Goetz, Partner at Kingston Systems. Mr Goetz is on a working group of subcommittee members leading the development of the guidelines.
Crews can become susceptible to alarm blindness, a situation that can result from too many alarms or alarms that aren’t correctly actioned, according to Mr Goetz. “The user can be inundated with alarms to the point that they’re not paying attention to the root cause of the issue,” he said. “There are instances where one event could trigger five or six alarms. While each one of those alarms has a purpose and is required, unfortunately, they all appear on the driller’s console when there’s only one issue that is a root cause.”
To address such challenges, the guidelines will assist contractors with developing an alarm management philosophy and a rationalization process to assess system functionality, alarm prioritization, and management of change procedure for alarms. First, the alarm management philosophy would help to establish the company’s standards for how the alarm system should perform. It would explain the purpose for each alarm on the rig and prioritize the importance of the alarms. This philosophy should also detail employees’ roles and responsibilities, including the driller, assistant driller, maintenance supervisor, toolpusher, wellsite leader and management.
Because the philosophy must support the drilling contractor’s current equipment and engineering processes and procedures, the guidelines are being written to be applicable to different generations of rigs. “The guidelines translate well to both conventional drill floors, as well as fully automated rigs,” DCS Subcommittee Chairman Trent Martin said.
The IADC guidelines also will take users through a review process called alarm rationalization, where a rig’s current alarms are evaluated against the philosophy. “Essentially, you would go through each alarm one by one, asking if the alarm is required, if it is prioritized correctly, routed to the correct user and how and when the alarm needs to be seen,” Mr Goetz said.
Any alarms that are found to be unnecessary could be consolidated or rerouted. For example, alarms that deal with a specific crew member’s responsibility could be directly routed to them, instead of going through the driller first. “When it comes to interacting with alarms, what is the role of the maintenance personnel? What is the role of the offshore installation manager? Some of these alarms should perhaps be going to a different console, and some of these alarms can be lower priority so they do not all appear on the driller’s console,” Mr Goetz said.
If any modifications to the rig’s alarms are decided on, the next step would be to complete a management of change process. During this process, any modifications made to simplify the alarm system are measured against the importance of the alarm to maintain a stable drilling operation. “Now we’ve identified a high-priority alarm that is being triggered along with another alarm that’s an even higher priority due to the exact same issue,” Mr Goetz said, referring to a situation that might warrant a management of change process. “The first alarm we’ve identified could be downgraded to a medium priority, but we probably don’t want to decide to delete it because it’s an important component to trouble shooting. Perhaps it just doesn’t need to be a high alarm in this case.”
The DCS Subcommittee identified alarm management as a critical area for improvement in a poll taken at the 2015 IADC Advanced Rig Technology Conference. “Alarm management is a challenge that affects many industries that use automation and instrumentation. As a drilling community, one of the challenges we see is the diversity of the rigs and their respective systems,” Mr Martin said.
To develop the IADC guidelines, the subcommittee considered a myriad alarm management standards that already exist. These include the Norwegian Petroleum Directorate (NPD) YA-711, the Engineering Equipment & Materials User Association (EEMUA) 191, and the combined standard from the American National Standards Institute (ANSI) and International Society of Automation (ISA), or ANSI/ISA 18.2. IADC also looked to other industries, including refining, nuclear, automotive and aviation, to analyze their approaches to alarm management.
Further, the guidelines will help drilling contractors better communicate with vendors regarding the performance standards they seek for alarms, Mr Martin pointed out. “One of the main things we wanted to do was develop additional awareness around alarm management in the industry,” he said.
Mr Goetz said he would like to work with the subcommittee to outline design practices for the alarms themselves. “It could be a development project for the IADC and drilling contractors to work with vendors to refine new alarm technologies like the incorporation of portable touch pads as alternate use interfaces,” he said. “I’d like to see not only how we improve existing systems but how we plan for alarm management on the rig of the future.” DC