The Operations and Maintenance Partnership
I would like to extend a large thank you to Larry for the kind words and to the whole TAPPI team for enhancing reliability and maintenance content for TAPPI members. IDCON is looking forward to helping the partnership grow and succeed. For you who don’t know IDCON, here is a very short introduction.
IDCON is a reliability and maintenance management consulting firm focused on helping mills and corporations establish improved equipment reliability. We work hands-on with mill people from corporate managers to craftspeople. One week, we’ll work with a corporate team to establish best practices on reliability; the next we’ll work with a planner to plan, or a craftsperson to do equipment inspection. We are a family-owned company established by Christer Idhammar (my father) in 1972. Many of you know Christer through his many articles, conferences, and mill visits. He is still active in the firm, but I have been leading the company since 2009.
To kick off the leadership series, I would like to touch on the partnership between operations and maintenance in our mills. I think the partnership is crucial to achieve reliable production.
In my experience, it is common to find the relationship to be adversarial, instead of a close partnership. Operations often see themselves as a “customer” of maintenance, and maintenance therefore becomes a service provider. This relationship is not always established in the organizational structure—yet it is embedded in the culture. In a customer/service provider relationship, it would be obvious that operations would be responsible for the cost. However, it is common to see maintenance responsible for the cost even though operations is the “client” asking for service. A non-paying client can create tension and animosity between the departments and build walls rather than create a partnership.
A customer/service provider relationship also fosters emotionally-based priorities for maintenance work. When a customer wants something, the service supplier typically says “yes, sir.” Work orders are therefore not always critically evaluated as to what is the most important work to execute for the mill as a whole. Operations tends to focus on short-term production goals while maintenance looks at the long-term equipment reliability for electrical, instrumentation, and mechanical equipment.
While operations are experts in the manufacturing process, it is unusual to see an operations manager with extensive operations and maintenance skills. A customer/service provider relationship will therefore create unreliable equipment since the “customer” doesn’t know what the equipment truly needs. It is not uncommon to see lubricators being pulled off to do scaffolding work for a shutdown (now we are missing lube points), or for planners to substitute as supervisors (now we have no planning for the area.)
So, how can a mill start improving the relationships between operations and maintenance?
First, I think it is important to understand each other’s role and expertise. Operations staffers are the experts in the process and should be responsible for process reliability. Maintenance staffers are experts in equipment and should be responsible for equipment reliability. We haven’t touched on engineering in this article yet, but engineers are experts in design and project management and should be responsible for design reliability. There is a lot of overlap and interaction between the departments, but each department’s key responsibility must be defined.
Second, the mill and corporation need to agree on joint goals. Most paper companies would agree that the goal is to improve reliability (measured by OEE) and reduce total cost/ton. The common tug-of-war is the time frame for the goals. Production often tries to improve shift and daily production numbers, while maintenance often focuses on long-term equipment reliability, but can sometimes be slow to reduce the total backlog of work in the mill.
If the partnership were to be put into practice, the long-term thinking could, for example, mean that:
• Operations would allow maintenance the time to align a pump to 2/1000 of an inch instead of starting up the paper machine early during a shutdown.
• We would prioritize work according to established criteria and remove unnecessary work orders from the backlog.
• We would train our people in trade skills and maintenance management work processes. Operators would be trained in the operation of equipment from a reliability perspective.
• We would not defer repairs more than absolutely necessary.
• Operations and maintenance would have a weekly priority meeting to jointly prioritize work orders.
• Operations and maintenance would solve problems jointly using a root cause process.
As a starting point for improving reliability and building a partnership between your departments, I suggest the following:
• Define and communicate the partnership relationship between departments.
• Clarify the “product” of maintenance. It is reliability, not “wrench time.”
• Define roles for each department.
• Set long-term joint goals and act according to the goals.
• Reward departments according to the long-term goals.
R&M Tips: Better Grouting Practices
As our infrastructure ages, some say that grout failures are inevitable. However, poor base installation practices often reduce the life of our equipment. Here are some examples.
FAILURE TO REMOVE LAITANCE
The strength in concrete comes from the aggregate. When a concrete base is poured, the top 1 or 2 inches contains no aggregate and should be removed before grouting to allow the grout to bond to the aggregate.
POOR BASE LEVELING TECHNIQUES
Grout needs to be placed into compression to be effective. A common practice is to use hard shims placed close to the sole plate anchor bolts to level the base prior to grouting (Fig. 1). Upon torqueing the anchor bolts, the shims are placed in compression and not the grout. This leads to premature failure of the grout.
A better technique is to use independent leveling screws to level the sole plate. The grout is then poured as usual (Fig. 2). Once the grout has cured, the leveling bolts are removed and the anchor bolts torqued to the correct specification. This places the grout into compression.
Contributed by Reliability Solutions: www.reliabilitysolutions.net
R&M Tips: Lubrication
Inspecting sight glasses is oil analysis in its simplest form. When done correctly, machine inspections can often uncover potential issues before they become catastrophic. Aside from checking for oil level, also be concerned with oil color, clarity, signs of foam or water, and staining on the glass itself. Getting more from lube inspections is achievable by digging just slightly deeper than the surface level.
CONTROLLING OIL CONTAMINATION IN PAPER MACHINES
Oil filters should be employed on every paper machine circulating system. Without the ability to remove contaminants, the oil and machine surfaces will degrade rapidly. Choose filters with a focus on smaller particles, such as 10 microns or less, as these smaller particles often cause the greatest damage. Also, keep in mind that the oil must be able to pass through the filter at all expected operating temperatures. In addition, as oil flows through the filter, the additives must remain in the oil and not be stripped by the filter.
Contributed by Noria Corp. www.noria.com