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Stack Metallurgical Services LLC: OSHA inspections and violations

Portland, Oregon · Metal Heat Treating · NAICS 332811

13inspections
64citation items
$12,186current penalties
Jul 17, 2025last inspection

OSHA has inspected Stack Metallurgical Services LLC 13 times in Oregon since 1998.

The latest one began on Jul 17, 2025 after a complaint, in Portland.

Those inspections ended with 64 citation items: 45 serious, 2 repeat and 17 other-than-serious.

Penalties were first proposed at $12,446 and now stand at $12,186, 2% lower after settlements or reviews.

Hazardous waste operations and emergency response comes up most often in these citations: 7 items under 1910.120.

How that compares: the median penalty per cited inspection for manufacturing employers since 2015 is $3,600, and Stack Metallurgical Services LLC averages $1,572 (3 cited inspections).

Stack Metallurgical Services LLC also files yearly injury logs with OSHA, summarized below.

Stack Metallurgical Services LLC: OSHA citation items per year, 1998 to 2025
Citation items per year, by inspection date.

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Inspection history

Inspection 348501479 OPENED JUL 17, 2025Closed

Complaint · Partial · Health · 75 employees at the site · Closed Aug 22, 2026

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1a
29 CFR OAR 437-002-0156(8)-1
 Serious$1,412$1,412Oct 3, 2025Final
Citation 1, item 1b
29 CFR OAR 437-002-0156(9)-2
 Serious$0$0Oct 3, 2025Final
Citation 1, item 1c
29 CFR OAR 437-002-0156(7)
 Serious$0$0Oct 3, 2025Final
Citation 1, item 2a
29 CFR OAR 437-002-0146(11)(A)
 Serious$2,824$2,824Oct 3, 2025Final
Citation 1, item 2b
29 CFR OAR 437-002-0146(10)(D)(I)
 Serious$0$0Oct 3, 2025Final
Citation 1, item 2c
29 CFR OAR 437-002-0146(10)(I)
 Serious$0$0Oct 3, 2025Final
Citation 1, item 2d
29 CFR 1910.147(c)(4)(i) · Lockout/tagout
 Serious$0$0Oct 3, 2025Final
Citation 1, item 2e
29 CFR 1910.147(c)(7)(i)(a) · Lockout/tagout
 Serious$0$0Oct 3, 2025Final
Citation 1, item 2f
29 CFR OAR 437-002-0146(11)(C)(A)(I)
 Serious$0$0Oct 3, 2025Final
Citation 1, item 2g
29 CFR 1910.147(c)(7)(i)(c) · Lockout/tagout
 Serious$0$0Oct 3, 2025Final
Citation 2, item 3
29 CFR 1910.134(k)(6) · Respiratory protection
 Other-than-serious$0$0Oct 3, 2025Final

Inspection 342981339 OPENED FEB 28, 2018Closed

Complaint · Partial · Safety · 25 employees at the site · Closed Aug 14, 2018

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1
29 CFR OAR 437-002-0221(13)(A)-1
 Serious$180$180Mar 26, 2018Final

Inspection 340723097 OPENED MAY 18, 2015Closed

Referral · Partial · Health · 25 employees at the site · Closed Sep 30, 2015

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1
29 CFR OAR 437-002-0042(4)-2
 Serious$200$200Jun 24, 2015Final
Citation 1, item 2
29 CFR 1910.111(c)(6)(i) · Storage and handling of anhydrous ammonia
 Serious$100$100Jun 24, 2015Final

Inspection 317345502 OPENED FEB 24, 2014Closed

Planned · Complete · Health · 55 employees at the site · Closed Sep 2, 2014

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1
29 CFR 1910.23(a)(8)(ii) · Guarding floor and wall openings and holes
 Serious$180$180Apr 29, 2014Closed
Citation 2, item 2
29 CFR 1910.305(b)(2)(i) · Electrical wiring methods
 Other-than-serious$0$0Apr 29, 2014Closed

Inspection 317345528 OPENED FEB 24, 2014Closed

Planned · Complete · Safety · 55 employees at the site · Closed Oct 7, 2014

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1
29 CFR 1910.242(b) · Hand and power tools
 Serious$150$150Jun 4, 2014Closed
Citation 1, item 2 Serious$180$180Jun 4, 2014Closed
Citation 1, item 3 Serious$180$180Jun 4, 2014Closed
Citation 1, item 4
29 CFR 1910.178(a)(4) · Forklifts and other powered industrial trucks
 Serious$180$180Jun 4, 2014Closed
Citation 2, item 5
29 CFR 7020074
 Other-than-serious$0$0Jun 4, 2014Closed
Citation 2, item 6 Other-than-serious$0$0Jun 4, 2014Closed
Citation 2, item 7
29 CFR 1910.179(m)(1) · Overhead and gantry cranes
 Other-than-serious$0$0Jun 4, 2014Closed
Citation 2, item 8 Other-than-serious$0$0Jun 4, 2014Closed
Citation 2, item 9
29 CFR 1910.179(j)(2) · Overhead and gantry cranes
 Other-than-serious$0$0Jun 4, 2014Closed
Citation 2, item 10 Other-than-serious$0$0Jun 4, 2014Closed

Inspection 314437146 OPENED JUL 19, 2010Closed

Referral · Partial · Health · 48 employees at the site · Closed Jul 19, 2010

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

No citations from this inspection.

Inspection 314435587 OPENED JUN 25, 2010Closed

Planned · Complete · Safety · 48 employees at the site · Closed Nov 23, 2010

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1
29 CFR 7020128
 Serious$900$900Jul 27, 2010Closed
Citation 1, item 2a
29 CFR 1910.304(g)(5) · Grounding and circuit protection
 Serious$300$300Jul 27, 2010Closed
Citation 1, item 2b
29 CFR 1910.305(g)(2)(ii) · Electrical wiring methods
 Serious$0$0Jul 27, 2010Closed
Citation 1, item 3 Serious$180$180Jul 27, 2010Closed
Citation 1, item 4 Serious$180$180Jul 27, 2010Closed
Citation 1, item 5
29 CFR 1910.212(a)(1) · Machine guarding
 Serious$270$270Jul 27, 2010Closed
Citation 2, item 6 Other-than-serious$0$0Jul 27, 2010Closed
Citation 2, item 7
29 CFR 1910.305(g)(1)(iva) · Electrical wiring methods
 Other-than-serious$0$0Jul 27, 2010Closed

Inspection 312842347 OPENED MAR 13, 2009Closed

Complaint · Partial · Health · 48 employees at the site · Closed Jul 27, 2009

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1
29 CFR 1910.94(a)(7) · Ventilation
 Serious$180$180Apr 20, 2009Closed
5 older inspections

Inspection 309608743 OPENED MAY 23, 2006Closed

Planned · Complete · Safety · 55 employees at the site · Closed Oct 27, 2006

5938 N Basin Ave, Portland, OR 97217 · Metal Heat Treating · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1 Serious$105$105Jul 13, 2006Closed
Citation 1, item 2
29 CFR 1910.212(a)(1) · Machine guarding
 Serious$210$210Jul 13, 2006Closed
Citation 1, item 3
29 CFR 1910.242(b) · Hand and power tools
 Serious$105$105Jul 13, 2006Closed
Citation 1, item 4
29 CFR 1910.215(b)(9) · Grinders and abrasive wheels
 Serious$105$105Jul 13, 2006Closed
Citation 2, item 5 Other-than-serious$0$0Jul 13, 2006Closed
Citation 2, item 6 Other-than-serious$0$0Jul 13, 2006Closed
Citation 2, item 7 Other-than-serious$0$0Jul 13, 2006Closed

Inspection 303603468 OPENED NOV 28, 2000Closed

Referral · Partial · Health · 50 employees at the site · Closed May 18, 2001

5938 N Basin Ave, Portland, OR 97217 · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1a
29 CFR 1910.165(b)(2) · Employee alarm systems
 Serious$195$195Jan 12, 2001Closed
Citation 1, item 1b
29 CFR 1910.165(d)(2) · Employee alarm systems
 Serious$0$0Jan 12, 2001Closed
Citation 1, item 2a
29 CFR 1910.120(q)(8)(i) · Hazardous waste operations and emergency response
 Serious$195$195Jan 12, 2001Closed
Citation 1, item 2b
29 CFR 1910.120(e)(1)(i) · Hazardous waste operations and emergency response
 Serious$0$0Jan 12, 2001Closed
Citation 1, item 3a
29 CFR 1910.134(h)(3)(i) · Respiratory protection
 Serious$195$195Jan 12, 2001Closed
Citation 1, item 3b
29 CFR 1910.120(l)(3)(iv) · Hazardous waste operations and emergency response
 Serious$0$0Jan 12, 2001Closed
Citation 1, item 3c
29 CFR 1910.120(l)(3)(v) · Hazardous waste operations and emergency response
 Serious$0$0Jan 12, 2001Closed
Citation 2, item 4
29 CFR 1910.134(f)(2) · Respiratory protection
 Other-than-serious$0$0Jan 12, 2001Closed
Citation 2, item 5
29 CFR 1910.111(b)(10)(ii) · Storage and handling of anhydrous ammonia
 Other-than-serious$0$0Jan 12, 2001Closed

Inspection 303603088 OPENED NOV 15, 2000Closed

Planned · Complete · Safety · 59 employees at the site · Closed Jun 12, 2001

5938 N Basin Ave, Portland, OR 97217 · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1
29 CFR 1910.303(g)(1)(i) · Electrical equipment, general requirements
 Serious$105$105Feb 5, 2001Closed
Citation 1, item 2
29 CFR 1910.147(c)(1) · Lockout/tagout
 Serious$175$175Feb 5, 2001Closed
Citation 2, item 3
29 CFR 1910.1200(h)(1) · Hazard communication
 Repeat$600$600Feb 5, 2001Closed
Citation 2, item 4
29 CFR 1910.120(q)(1) · Hazardous waste operations and emergency response
 Repeat$600$600Feb 5, 2001Closed
Citation 3, item 5 Other-than-serious$500$500Feb 5, 2001Closed

Inspection 302140892 OPENED MAY 18, 1998Closed

Complaint · Partial · Health · 50 employees at the site · Closed Jan 18, 2002

5938 N Basin Ave, Portland, OR 97217 · OSHA's record · Phone and website on Google Maps

Citation and ruleTypeProposedCurrentIssuedStatus
Citation 1, item 1
29 CFR 1910.120(q)(1) · Hazardous waste operations and emergency response
 Serious$275$275Jul 10, 1998Final
Citation 1, item 2
29 CFR 1910.120(q)(6)(iiia) · Hazardous waste operations and emergency response
 Serious$165$165Jul 10, 1998Final
Citation 1, item 3
29 CFR 1910.242(b) · Hand and power tools
 Serious$165$100Jul 10, 1998Final
Citation 1, item 4 Serious$165$100Jul 10, 1998Final
Citation 1, item 5
29 CFR 1910.1200(h) · Hazard communication
 Serious$165$165Jul 10, 1998Closed
Citation 1, item 6
29 CFR 1910.101(b) · Compressed gases (general requirements)
 Serious$660$530Jul 10, 1998Final
Citation 1, item 7
29 CFR 1910.1200(e)(1) · Hazard communication
 Serious$165$165Jul 10, 1998Closed
Citation 2, item 8
29 CFR 1910.132(d)(2) · Personal protective equipment, general requirements
 Other-than-serious$0$0Jul 10, 1998Closed

Injury and illness logs

From the Form 300A summaries employers file with OSHA each year. Rate = recordable cases per 100 full-time workers.

In 2025, the Portland site logged 4 recordable injuries or illnesses among about 79 workers: 6.6 per 100 full-time workers, against a median of 3.2 for its industry. Those cases cost 73 days away from work.

Site and yearWorkersCasesDays-away casesRateIndustry median
Stack Metallurgical Services LLC
Portland · 2025
79 436.63.2
SMS
Portland · 2023
78 435.23.2
Stack Metallurgical Services, Inc.
Portland · 2016
51 102.03.2

The rules behind these citations

Current text from the Code of Federal Regulations. Some citations were issued under older wording.

29 CFR 1910.101 · Compressed gases (general requirements)

29 CFR 1910.101(b)

(b) Compressed gases. The in-plant handling, storage, and utilization of all compressed gases in cylinders, portable tanks, rail tankcars, or motor vehicle cargo tanks shall be in accordance with Compressed Gas Association Pamphlet P-1-1965, which is incorporated by reference as specified in § 1910.6.

29 CFR 1910.111 · Storage and handling of anhydrous ammonia

29 CFR 1910.111(b)(10)(ii)

(ii) Stationary storage installations must have at least two suitable gas masks in readily-accessible locations. Full-face masks with ammonia canisters that have been approved by NIOSH under 42 CFR part 84 are suitable for emergency action involving most anhydrous ammonia leaks, particularly leaks that occur outdoors. For respiratory protection in concentrated ammonia atmospheres, a self-contained breathing apparatus is required.

29 CFR 1910.111(c)(6)(i)

(6) Protection of appurtenances. (i) Valves, regulating, gaging, and other appurtenances shall be protected against tampering and physical damage. Such appurtenances shall also be protected during transit of containers.

29 CFR 1910.120 · Hazardous waste operations and emergency response

29 CFR 1910.1200 · Hazard communication

29 CFR 1910.132 · Personal protective equipment, general requirements

29 CFR 1910.134 · Respiratory protection

29 CFR 1910.147 · Lockout/tagout

29 CFR 1910.165 · Employee alarm systems

29 CFR 1910.178 · Forklifts and other powered industrial trucks

29 CFR 1910.179 · Overhead and gantry cranes

29 CFR 1910.184 · Slings

29 CFR 1910.212 · Machine guarding

29 CFR 1910.215 · Grinders and abrasive wheels

29 CFR 1910.23 · Guarding floor and wall openings and holes

29 CFR 1910.242 · Hand and power tools

29 CFR 1910.303 · Electrical equipment, general requirements

29 CFR 1910.304 · Grounding and circuit protection

29 CFR 1910.305 · Electrical wiring methods

29 CFR 1910.94 · Ventilation

29 CFR 7010.7600

29 CFR 7010.7650

29 CFR 7020.220

29 CFR 7020.2280

29 CFR 7020.2900

29 CFR 7020.3780

29 CFR 7022.1020

Other metal heat treating employers in Oregon

Source: U.S. Department of Labor, OSHA enforcement data. A citation is OSHA's allegation; employers can contest it, and the status column shows where each item stands. Something wrong on this page? Tell us.