ITMC Safety Compliance & Technical Documentation 5 — Questions and Answers
Question 1: A maintenance technician is replacing a chemical pump seal. The chemical handled is a known carcinogen. Beyond standard PPE, which additional precaution is most important before starting work?
- Increasing ventilation to the maximum setting in the maintenance shop
- Reviewing the SDS, verifying proper respiratory protection, and ensuring the system is fully purged and isolated (Correct answer)
- Wearing double gloves regardless of the chemical compatibility of glove material
- Completing the task as quickly as possible to minimize exposure duration
Correct answer: Reviewing the SDS, verifying proper respiratory protection, and ensuring the system is fully purged and isolated
Reviewing the SDS, selecting chemically compatible RPE, and verifying system purge and isolation are essential before working with carcinogenic chemicals.
Question 2: What is the primary purpose of equipment nameplate data in maintenance documentation?
- To provide marketing information about the equipment manufacturer
- To supply essential specifications such as rated voltage, current, speed, and capacity needed for safe operation and parts procurement (Correct answer)
- To satisfy regulatory requirements for equipment registration with government agencies
- To record the installation date and warranty expiration for accounting purposes
Correct answer: To supply essential specifications such as rated voltage, current, speed, and capacity needed for safe operation and parts procurement
Nameplate data provides critical operational specifications that ensure the equipment is operated within design limits and replacement parts are correctly specified.
Question 3: Under 29 CFR 1910.147, a tagout device alone (without a lockout device) may only be used when:
- The equipment can be locked out with minimal effort
- The energy isolating device is not capable of being locked out (Correct answer)
- The maintenance task is expected to take less than 30 minutes
- A supervisor authorizes a reduced safety protocol
Correct answer: The energy isolating device is not capable of being locked out
Tagout alone is permitted only when the energy isolating device physically cannot accept a lockout device, and additional protective measures must compensate.
Question 4: In preventive maintenance scheduling, the term 'Mean Time Between Failures' (MTBF) is used to:
- Calculate the average repair time needed when equipment fails
- Estimate the average operational time between failures to help set PM intervals (Correct answer)
- Measure the time from failure detection to completing a repair
- Determine the maximum allowable downtime per shift for production planning
Correct answer: Estimate the average operational time between failures to help set PM intervals
MTBF is the average time a system operates between failures and is a key metric for determining appropriate preventive maintenance intervals.
Question 5: A technician finds that a safety relief valve on a pressure vessel has been manually wired open. The correct immediate action is to:
- Remove the wire and test the valve to confirm it still functions properly
- Immediately shut down the pressure system and report the unsafe condition to supervision (Correct answer)
- Document the finding in the maintenance log and schedule a valve inspection at the next opportunity
- Assume the wire was installed by a qualified engineer and continue scheduled maintenance
Correct answer: Immediately shut down the pressure system and report the unsafe condition to supervision
A blocked relief valve eliminates overpressure protection and creates an immediately dangerous condition; the system must be shut down at once.
Question 6: Which element is required on every OSHA-compliant GHS chemical label?
- Molecular weight and boiling point of the chemical
- Product identifier, signal word, hazard statements, pictograms, precautionary statements, and supplier information (Correct answer)
- Date of manufacture and expected shelf life
- Route of exposure limits and IDLH values
Correct answer: Product identifier, signal word, hazard statements, pictograms, precautionary statements, and supplier information
OSHA's HazCom 2012 requires all six GHS label elements: product identifier, signal word, hazard statements, pictograms, precautionary statements, and supplier contact.
Question 7: When a maintenance procedure requires working at height using a scaffold, which document defines the inspection, load ratings, and safe use requirements for scaffolding in general industry?
- OSHA 29 CFR 1910.28 — Walking-Working Surfaces
- OSHA 29 CFR 1910.29 — Fall Protection Systems
- OSHA 29 CFR 1926.451 — Scaffolds (Construction)
- OSHA 29 CFR 1910.28 and ANSI/SSFI SC100 for general industry scaffold use (Correct answer)
Correct answer: OSHA 29 CFR 1910.28 and ANSI/SSFI SC100 for general industry scaffold use
General industry scaffold safety is governed by OSHA 1910.28 (duty to have fall protection) combined with ANSI/SSFI SC100 scaffold safety requirements.
ITMC Safety Compliance & Technical Documentation 5
A maintenance technician is replacing a chemical pump seal.
The chemical handled is a known carcinogen.
Beyond standard PPE, which additional precaution is most important before starting work?