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Communications infrastructure
ASD ISMISM-0194

ASD ISM 0194 Sealing conduit joints in shared facilities

What it says

In shared facilities, a visible smear of conduit glue is used to seal all plastic conduit joints and TOP SECRET conduits connected by threaded lock nuts.

Quoted as published. Everything else on this page is written by Control Stack.

What it means

In plain English

Use visible glue to seal plastic and TOP SECRET conduit joints in shared spaces.

When you're sharing facilities with others, it's important to visibly seal any plastic and TOP SECRET electrical conduits. This is like making sure all doors are locked-if these seals aren't visible and secure, it could create gaps where unauthorised people could interfere with sensitive equipment. You don't want anyone tampering with your cables, which can lead to data breaches or system failures.

Why it matters

If conduit joints in shared facilities aren't visibly glued/sealed, they can be opened and tampered with, enabling unauthorised cable access, data compromise or outages.

How to implement

  1. Facilities managers should ensure that all plastic conduit joints are visibly sealed.

    Use a specially designed glue that leaves a visible mark to show the joint is secure. This physical mark is like a visual lock that indicates the joint hasn't been tampered with.

  2. IT staff should be responsible for ensuring all TOP SECRET conduits connected by threaded lock nuts are properly glued.

    Apply a standout glue that leaves a noticeable smear once set, helping quickly identify whether the joint is tampered with.

  3. Maintenance personnel should regularly inspect these visible seals as part of their routine checks.

    During inspections, they should visually confirm that the glue seals are intact and haven't been disturbed.

  4. Office managers can instruct their teams to report any seals that look suspicious or appear altered.

    Educate staff with basic visual indicators of an intact seal versus one that might have been tampered with.

  5. Procurement teams should ensure they stock and supply the correct type of glue to be used in sealing these conduit joints.

    Coordinate with suppliers to get a glue that meets security specifications and leaves a visible mark when dry.

Keep it running

In shared facilities, apply a visible smear of conduit glue to seal every plastic conduit joint and TOP SECRET conduits with threaded lock nuts; inspect routinely and reseal if disturbed.

Evidence and audit

  1. Check 1 of 4What an auditor asks for

    Ask for

    The maintenance checklist that includes conduit inspection: Review this document to see if checking the seals is a standard practice.

    Look at

    Regular entries showing checks of visible joints.

    Good evidence

    Is a checklist with signatures or initials confirming checks are done consistently.

  2. Check 2 of 4What an auditor asks for

    Look at

    Clear, uninterrupted glue traces around each joint.

    Good evidence

    Consistent, untampered seals on all critical conduits.

  3. Check 3 of 4What an auditor asks for

    Ask for

    Them to explain how they ensure conduit joints are properly glued and regularly inspected.

    Good evidence

    Is someone who can describe the gluing process, indicate who checks the seals, and how often checks happen.

  4. Check 4 of 4What an auditor asks for

    Look at

    Purchase orders specifying the right type and amounts, ensuring continuity of supply.

    Good evidence

    Sign is an inspection routine that includes precise steps for verifying that all conduit seals remain intact and visible.

Mappings

Closest match in ISO/IEC 27001: A.7.5, Protecting against physical and environmental threats, which this control partially meets.

ISO 27001

ISO/IEC 27001: 1 mapping

  • A.7.5Protecting against physical and environmental threatsPartially meets

Mappings show how controls relate across frameworks. They do not imply full equivalence or certification.