What Is 5S and How Is It Implemented? Steps, Audit Form and Scoring

5S consists of sort, set in order, shine, standardise and sustain. Implementation plan, red tagging, a sample 5S audit form, scoring and audit frequency.

Translated from the Turkish original · Türkçe aslı

5S is a lean manufacturing method that brings order to the workplace in five steps and makes that order last: Sort (Seiri), Set in order (Seiton), Shine (Seiso), Standardise (Seiketsu) and Sustain (Shitsuke). Implementation starts with red tagging in a pilot area, is embedded through visual management, and is sustained by regular measurement with a scored audit form made up of observable items.

Below we explain what each step means on the shop floor, the order of implementation, how the audit form is prepared and scored, and why 5S slips in most plants after a few months. Continuous auditing with cameras is covered separately in our automating the 5S audit article.

What are the five steps of 5S?

5S comes from the initials of five Japanese words and is rendered with several different equivalents in English. The order of the steps matters; each builds on the one before.

Seiri, Sort (Sift): for every object in the area the question "is this object needed here, this often?" is asked, and what is unnecessary is removed from the area. The goal is to reduce the area to only the objects the work requires; what gets thrown away is a consequence of this.

Seiton, Set in order (Straighten): every remaining object gets a defined, labelled place. Frequently used items are placed closest to the point of use; whether a tool is in its place can be seen at a glance. The cost of poor placement is paid in walking and searching losses at the workstation; we describe one way of measuring this loss in our station-based PPA analytics article.

Seiso, Shine: the area and equipment are cleaned, but cleaning is also an inspection. The operator wiping down the machine also sees the oil leak, the loose connection and the crack. Until the source of the dirt, such as a leaking seal or a guard that scatters swarf, is found and eliminated, cleaning remains a never-ending job.

Seiketsu, Standardise: the condition reached in the first three steps is turned into a written and visual standard. The area's photo standard, who cleans what and how often, and the maximum quantity of each material allowed are written down.

Shitsuke, Sustain (Self-discipline): whether the standard is applied is monitored through regular audits, deviations are closed and 5S becomes part of daily work. The tools of this step are the audit form and management going to the floor regularly.

How is 5S implemented? A step-by-step implementation plan

The implementation order that works on the shop floor is as follows:

1. Pilot area and team: instead of starting with the whole factory, an area where everyone will see the result is chosen. A small team is formed of the people working in that area, a maintenance representative and a facilitator.
2. Baseline: the area is photographed from fixed points and the first audit form is completed. This first score is the only honest way to show progress.
3. Sorting day: the team goes through every object in the area and attaches a red tag to those that are unnecessary or have no defined place.
4. Setting in order: places are defined for the remaining objects, floor lines are marked, and shadow boards and labels are prepared.
5. Cleaning and source hunting: the area is cleaned, abnormalities found during cleaning are added to the maintenance list, and a permanent measure is planned for the source of the dirt.
6. Standard: the area's photo standard, cleaning schedule and responsibility list are posted at the entrance to the area.
7. Audit cycle: the audit form, its frequency and corrective action tracking are launched.
8. Rollout: the forms and standards that settled in the pilot are carried over to neighbouring areas; each new area starts with its own baseline photo and first score.

How is red tagging applied?

The red tag is the decision tool of the sort step. The tag states what the object is, where it was found, its category (material, work in progress, tool, equipment, document), why it was tagged (unnecessary, excess, no defined place, faulty), who tagged it and on what date, and the proposed action. The tagged object is moved to a defined red tag area outside the work area.

In the red tag area each object waits for a period announced in advance; items claimed by their owner during this period are returned, and a decision is made for the rest: transfer to another area, return to stores, sale or scrap. For fixed assets or high-value equipment, the decision is made together with accounting and maintenance. Each tag is entered into a list; the list is both evidence of the sort and feedback to purchasing and stock planning. If the same material turns up in excess at every sort, the root of the problem is often the order quantity.

How is visual management used in 5S?

The purpose of visual management is for a deviation from the standard to be seen without needing an explanation. Floor lines separate the walkway, the pallet area, the buffer stock location and the restricted zone. Shadow boards show each tool's place by its outline; an empty shadow signals a missing tool. Shelf and bin labels, minimum and maximum stock markers and checkpoint markings on machines do the same job.

A colour code should have only one meaning across the plant. If yellow means walkway in one hall and buffer stock in another, visual management becomes unreadable; the colour and marking dictionary is written as a one-page standard and applied identically in all areas. For marking safety-critical areas such as emergency exit routes, fire equipment and the space in front of electrical panels, the relevant occupational safety legislation and the plant's emergency plan take precedence.

How is a 5S audit form prepared?

A good audit form ensures that two different auditors give the same score for the same area. The way to achieve this is to write items that can be observed: instead of "is the area clean?", "is there any build-up of oil, swarf or liquid on the floor?" The form consists of four or five items for each S and is adapted to the type of area; an office, a warehouse and a machining area are not audited with the same form.

Sample items for a production area could be as follows:

How is a 5S audit scored?

A common and easy-to-understand method is to score each item from 0 to 4: 0 the standard is not applied at all, 1 major and widespread deviation, 2 several clear deviations, 3 a single minor deviation, 4 no deviation. What each score means should be written on the form; otherwise the "is it a 3 or a 4" debate gets in the way of the audit.

With five items for each of the five S's and a 0–4 scale, the maximum score is 5 × 5 × 4 = 100; the score can be read directly as a percentage. For example, if an area scores 16 in Sort, 14 in Set in order, 15 in Shine, 10 in Standardise and 8 in Sustain, the total is 63. This breakdown shows that the area has largely done the first three steps but remains weak on standardising and sustaining: order has been established but has not yet become permanent. When the scores of the five S's are shown on a radar chart, the weak step is visible at a glance.

Two rules make scoring fair. The first is critical items: safety findings such as a blocked emergency exit route or blocked access to a fire hose cabinet are not averaged away in the score; as soon as one is found, a corrective action is opened regardless of the area's score. The second is that every finding has a photo, an owner and a closing date. As well as the score itself, how quickly findings are closed and whether the same finding recurs should also be tracked.

How often and by whom should a 5S audit be carried out?

There is no single frequency rule; the structure that works well on the floor is layered. The area team carries out a short self-check of a few minutes at the start of the shift. The area owner or department engineer carries out the weekly form audit. The monthly audit is done crosswise by auditors from another department; an outside eye catches the deviations the team has grown used to and no longer sees. Management going to the floor regularly is also part of this structure.

For consistency between auditors, it is useful to score the same area together at regular intervals and discuss the differences. Knowing the audit time in advance, on the other hand, distorts the measurement: whenever the auditor arrives, the area is always tidy. This is the structural limit of manual auditing.

Why does 5S fail to last?

The most common failure of 5S comes not at the start but in the third or fourth month. A few causes are seen again and again. 5S is launched as a campaign and ends when the campaign ends. Audit findings are recorded, but the corrective action has no owner or date. A layout error is mistaken for a discipline problem: if pallets are constantly left on the walkway, the buffer stock area is in the wrong place or too small. Cleaning becomes exhausting because it does not get to the source of the dirt. Because the score is only measured on audit day, it does not reflect reality and the team does not trust it.

The countermeasures that work are simple but require continuity: an owner and closing date for every finding, a root-cause view that questions the layout for findings that recur at the same spot, weekly sharing of the score with the area team, and targets set differently according to the nature of the area. Putting the maintenance workshop and the office corridor on the same target weakens teams' belief in the score.

What is 6S? The safety step

6S is a common variant in which Safety is added to the five steps as the sixth. Plants that audit safety as a separate step score pedestrian–forklift separation, access to emergency exits and fire equipment, stacking height, chemical labelling and machine guards under a separate heading. Others argue that safety should already be part of every S; a well-organised and clean area is safer. Whichever is chosen, safety findings should be treated as critical items. We have gathered what cameras can check on the occupational safety side in our AI for occupational safety article.

How is continuous 5S auditing done with cameras?

A manual audit is a snapshot of a single moment; fixed cameras, by contrast, can watch the area all day. Rules that can be defined visually are audited continuously: the walkway being blocked by material, leaks and spills on the floor, tools and equipment left unattended, and pallets piled outside the defined area. CX Teknoloji's 5S solution audits these four rule classes on existing cameras and produces an automatic daily 5S score and a photo-backed findings list per area; on the sample dashboard on the solution page, the plant-wide weekly score rises from 58 to 81 in 8 weeks, i.e. +23 points. Items the camera cannot see, such as order inside cabinets and whether labels are up to date, remain part of the manual audit; the results of the two methods are combined in the same form.

The score belongs to the area and is not linked to an individual; face recognition is not used, and finding photos are deleted after a defined period. We explain how employees should be informed about the purpose of the cameras in our workplace camera recording and KVKK (Türkiye's Personal Data Protection Law) article. When 5S findings are read together with downtime data, the share of the tool being searched for at the station and of material blocking the way in OEE losses also becomes visible. To see which areas your existing cameras are suitable for, we can plan together a pilot that starts with a single area.

Frequently asked questions

What are the steps of 5S?

5S consists of five steps. Sort (Seiri) removes what is unnecessary from the area; Set in order (Seiton) gives every remaining object a defined place; Shine (Seiso) cleans the area and equipment while also finding abnormalities; Standardise (Seiketsu) turns the condition reached into a written and visual standard; Sustain (Shitsuke) makes the standard permanent through regular audits and habit. The steps are applied in order.

How is a 5S audit carried out?

It is carried out with an area-specific form made up of four or five observable items for each S. The auditor walks the area, scores each item on a scale with written definitions (for example 0–4), photographs each finding and records its owner and closing date. Critical safety-related findings are not averaged away in the score; a corrective action is opened immediately. The next audit also checks whether the previous findings have been closed.

How often should a 5S audit be carried out?

There is no fixed rule; a layered structure works well. The area team does a short self-check at the start of the shift, the area owner a weekly form audit, and auditors from another department a monthly cross-audit. When the audit time is known in advance, the area is prepared for that day; unannounced audits and continuous measurement therefore show the real situation better.

What is a red tag?

A red tag is a decision tool used in the sort step to mark objects that are unnecessary, in excess or have no defined place. The tag states the object, its category, the reason for tagging, the person who tagged it, the date and the proposed action. The tagged object waits in the red tag area for a period announced in advance; if no owner claims it, a decision is made to transfer, return, sell or scrap it.

What is the difference between 5S and 6S?

6S is a variant in which a Safety step is added to the five steps of 5S. Pedestrian–forklift separation, access to emergency exits and fire equipment, stacking height, chemical labelling and machine guards are audited under a separate heading. Some plants prefer to assess safety within each S. Whichever model is chosen, safety findings should be treated as critical items.

Can a 5S audit be done with cameras?

Yes, for rules that can be defined visually. Fixed cameras can continuously check for blocked walkways, leaks on the floor, unattended tools and equipment, and pallets piled outside the designated area, and produce a daily score per area. Items the camera cannot see, such as order inside cabinets and whether labels are up to date, remain part of the manual audit. The score belongs to the area; face recognition is not used.